CN102236301B

CN102236301B - Photosensitive component box, developer box and processing box

Info

Publication number: CN102236301B
Application number: CN201110124832.0A
Authority: CN
Inventors: 石井亮; 岸勲朗; 清水贵司
Original assignee: Brother Industries Ltd
Current assignee: Brother Industries Ltd
Priority date: 2004-08-06
Filing date: 2005-08-04
Publication date: 2014-09-03
Anticipated expiration: 2025-08-04
Also published as: ATE537486T1; HK1083894A1; CN102236301A; ATE527582T1; MY144840A

Abstract

The invention provides a developer box comprising a frame, a developer accommodating portion, a developer supply portion, a developer electrode and input gears. The frame includes a first side wall and a second side wall, which basically extend along the length direction. The developer accommodating portion for accommodating the developer extends from the first side wall to the second side wall along a width direction which is basically vertical to the length direction. The developer supply portion for providing the developer to the photosensitive component extends from the first side wall to the second side wall along a width direction and accommodates a developer transmission component. The developer transmission component comprises a developer transmission component shaft and a developer transmission component body being supported on the developer transmission component shaft. The developer transmission component shaft extends along a width direction and is supported by the first and the second side walls in a rotatable manner. The developer electrode applies electric bias to the developer transmission component, and at least a part of the developer electrode is connected to the first side wall and the developer transmission component. The input gears provides a driving force for rotating the developer transmission component.

Description

Electrifier frame, photoreceptor cartridge, developer box and handle box

The application is the divisional application of following application:

The applying date of original application: on 08 04th, 2005

The application number of original application: 200510091106.8

The denomination of invention of original application: Electrifier frame, photoreceptor cartridge, developer box and handle box

Quoting alternately of related application

The application requires the right of priority to following Japanese patent application, declares in Japanese patent application No.2004-231201 and the No.2004-231202 on August 6th, 2004; Declare in Japanese patent application No.2004-305551 and the No.2004-305552 on October 20th, 2004; Declare in Japanese patent application No.2004-377284, No.2004-377285 and the No.2004-375936 on Dec 27th, 2004.

Technical field

The present invention relates to a kind of can be attached/handle box of dismounting, can be attached/the bulging box of dismounting, can be attached/developer box of dismounting, and a kind of can use can attached/dismounting handle box, can attached/dismounting bulging box and/or can be attached/imaging device of the developer box dismantled.

Background technology

Electrostatic image forming apparatus generally comprises optical system, and photosensitive device (for example photosensitive drums) is arranged near the charging device of photosensitive device, developing apparatus (for example developer roll), transfer device (for example transfer roll) and cleaning device.Usually, electrostatic image forming apparatus is by form electrostatic latent image on photosensitive device, by providing developer to form developer image to the electrostatic latent image being formed on photosensitive device, and then developed image is transferred on recording medium and document image.More specifically, for example, in order to form image on recording medium, at photosensitive drum surface by laser beam irradiation so that before forming electrostatic latent image corresponding to the image that will form in photosensitive drums, charging device charges at photosensitive drum surface equably.Then electrostatic latent image is used the developer that provided by developer roll to develop to make and in photosensitive drums, is formed developer image.Then by transfer roll by developer image to recording medium.After visual image is transferred, the cleaned device of developer that most of (preferably whole) stay on photoreceptor removes.

In these diversified imaging devices, many image-forming components, being all arranged on such as photosensitive device, charging device, developer roll, transfer roll and/or cleaning device can be attached with imaging device/handle box of dismounting on.The example of this handle box is in U.S. Patent No. 6,041, open in 203 and No.6,546,217.Such handle box can make to change or safeguard that to be included in the work of one or more element in handle box more convenient.

Handle box generally comprises a housing, wherein holds the various elements of handle box, is provided with multiple electrodes and driven wheel on housing.One of electrode is for as grounding connection, and other electrode is fed to electric energy for the power supply the main body that is arranged on imaging device to each element of handle box.Gear on driven wheel and imaging device and/or member interact to drive each element of handle box.

Use such imaging device promising inner space or passage of configuring on image forming apparatus and from imaging device separating treatment box that handle box is attached to conventionally that can attached/separable handle box.Conventionally, in the time that such handle box is attached to imaging device, handle box be arranged on imaging device cavity inside so that each element of handle box can effectively be connected with other elements of imaging device.Can attached/separable handle box be attached to while removing in imaging device or from imaging device when such, the expose portion of handle box may with along and install and the expose portion friction that removes the inner space of handle box or the imaging device of channel location around being configured to.For example, although (generally include the guiding mechanism of certain form in such imaging device, groove) with boot process box turnover imaging device, but at least until before handle box engages with guiding mechanism, between the expose portion of handle box and the expose portion of imaging device or may come in contact.And even if be provided with gathering sill, some gathering sills restricted is not sufficient to prevent the above-mentioned contact that occurs do not wished.Therefore, conventionally, the part that at least first enters imaging device during attached handle box (, the part finally shifting out during separating treatment box of handle box) of handle box is often easier to, with imaging device, friction or undesirable contact occur, and may be damaged.

Although some part of handle box is formed the protective for some element of handle box, the some parts of handle box and/or element or when being exposed to wittingly convenient handle box and being arranged in imaging device these parts and/or element can with the element contact of imaging device and together with work.The interactional expose portion of above-mentioned and other elements may be because damage usually occurring in the friction between this expose portion and imaging device with respect to imaging device installation and during removing handle box.For example, more specifically, damage because of above-mentioned friction if be arranged on electrode on handle box outside surface, handle box and/or imaging device just can not normal work.

For example, in some cases, a kind of blind shaped lid can be set, in the time of the handle box setting position in imaging device inside in place, this lid is opened rear ability exposed electrode, to reduce the damage that preferably prevents expose portion.But above-mentioned blind shaped mechanism is set may be unsatisfactory, at least because do like this size that may increase cost and/or handle box and/or imaging device.

Particularly more and more less imaging device demand is constantly increased.Thisly constantly to increase demand in order meeting, less handle box must to be provided.First the size that, reduces handle box and/or imaging device will become a direct task (for example reducing the size X% of each element).But numerous factors and/or demand aggravated this and seem simple task, skilled person in the art can understand, and in fact different mentalities of designing and requirement can make technique very complicated.Further, the overall dimension of well-known handle box in recent years and/or imaging device is significantly reduced, and due to some practicality objects, has the restriction of " minimum dimension " for certain element of handle box and/or imaging device.Like this, zone of action (being the amount of available freedom/exceptional space) is just significantly reduced.Therefore, skilled personnel can understand in the art, and the imaging device that design and implementation is less and less part reason box still will provide practical imaging device and handle box to need rich experience, idea and innovation simultaneously.

Summary of the invention

In various example embodiment, be provided with and comprise framework, developer containing part, developer provides portion, the developer box of developer electrode and input gear.This framework comprises the first side wall and the second sidewall, and the first side wall and the second sidewall extend substantially along its length.Developer containing part for receiving photographic developer extends to the second sidewall along the Width that is basically perpendicular to length direction from the first side wall.For providing the developer of developer to provide portion's broad ways to extend to the second sidewall and receiving photographic developer transmission member from the first side wall to Electrifier frame, photoreceptor.Developer transmission member comprises developer transmission member axle and is supported on the developer transmission member body on developer transmission member axle.Developer transmission member axle broad ways is extended and is rotatably supported by the first side wall and the second sidewall.Developer electrode applies electrical bias to developer transmission member, and at least a portion of developer electrode is connected to developer transmission member at the first side wall.Input gear provides driving force for the rotation of developer transmission member, and input gear is rotatably supported at the first side wall.

In each example embodiment arrange can with the attached developer box with separating of Electrifier frame, photoreceptor cartridge, comprise multiple electrodes in the first side of Electrifier frame, photoreceptor cartridge.This developer box comprises framework, developer containing part, and developer provides portion and input gear.This framework is included in the first side wall in developer box the first side and the second sidewall in developer box the second side, and the first side wall and the second sidewall extend substantially along its length.Developer containing part for receiving photographic developer extends to the second sidewall along the Width that is basically perpendicular to length direction from the first side wall.For providing the developer of developer to provide portion's broad ways to extend to the second sidewall and receiving photographic developer transmission member from the first side wall to Electrifier frame, photoreceptor cartridge.This developer transmission member broad ways is extended and is rotatably supported by the first side wall and the second sidewall between the first side wall and the second sidewall.Input gear provides driving force for the rotation of developer transmission member, and input gear is rotatably supported by the first side wall.In the time that developer box is attached to Electrifier frame, photoreceptor cartridge with formation processing box, the first side of developer box and the first side of Electrifier frame, photoreceptor cartridge are positioned on the same side of handle box, and therefore the electrode of Electrifier frame, photoreceptor cartridge and input gear are arranged on the same side.

In each example embodiment, arrange can with at least one the attached Electrifier frame, photoreceptor cartridge with separating in developer box and imaging device.Electrifier frame, photoreceptor cartridge comprises framework, Electrifier frame, photoreceptor accommodation section, developer box receptacle, multiple electrical equipments and multiple electrode.This framework comprises the first side wall and the second sidewall, and the first side wall and the second sidewall extend substantially along its length.This Electrifier frame, photoreceptor accommodation section extends to the second sidewall along the Width that is basically perpendicular to length direction from the first side wall.Developer box receptacle broad ways extends to the second sidewall from the first side wall.Multiple electrical equipments are by frame supported.Multiple electrodes are that multiple electrical equipments apply bias voltage, and multiple electrode is supported by the first side wall.The first side wall comprises the first sub-surface, the second sub-surface and the 3rd sub-surface, and each sub-surface supports at least one electrode in multiple electrodes.The first sub-surface than the second sub-surface and the 3rd sub-surface along its length further from developer box receptacle.The first sub-surface more approaches the second sidewall than the second sub-surface and the 3rd sub-surface broad ways.

In each example embodiment arrange can with the attached handle box with separating of imaging device.Handle box comprises the first framework, the second framework, and Electrifier frame, photoreceptor accommodation section, developer containing part, developer provides portion, input gear, multiple electrical equipments and multiple electrode.The first framework comprises the first side wall and the second sidewall.The second framework comprises the 3rd sidewall and the 4th sidewall.Electrifier frame, photoreceptor accommodation section extends to the second sidewall from the first side wall.Developer containing part extends to the 4th sidewall from the 3rd sidewall.Developer provides portion to extend to the 4th sidewall from the 3rd sidewall.Input gear provides driving force to developer containing part and the developer portion of providing, and input gear is rotatably supported by the 3rd sidewall.Multiple electrical equipments are by the first frame supported.Multiple electrodes are that multiple electrical equipments apply bias voltage, and the plurality of electrode is arranged on the first side wall.The first framework can with the second framework attached with separate.In the time that the first framework is attached to the second framework, the first side wall and the 3rd sidewall are arranged in the first side of handle box, and the second sidewall and the 4th sidewall are arranged in the second side of handle box.

To implementing the detailed description of embodiment of system and method for various aspects of the present invention, can obtain these and other optional features of various aspects of the present invention and possible advantage by below.

Brief description of the drawings

Elaborate example embodiment of the present invention with reference to following accompanying drawing, wherein

Fig. 1 is the sectional view that comprises the exemplary imaging device of an exemplary processes box and protecgulum closure;

Fig. 2 is the sectional view of the imaging device of protecgulum under opening as shown in Figure 1;

Fig. 3 is the sectional view of handle box as shown in Figure 1;

Fig. 4 is the sectional view of exemplary developer box;

Fig. 5 is the left skeleton view of the sinciput of developer box shown in Fig. 4;

Fig. 6 is the vertical view of developer box shown in Fig. 4;

Fig. 7 is the left skeleton view in rear top of developer box shown in Fig. 4;

Fig. 8 is the left side view shown in Fig. 4 with the developer box of a gear cap;

Fig. 9 is the left side view that there is no the developer box of gear cap shown in Fig. 4;

Figure 10 is the right view of developer box shown in Fig. 4;

Figure 11 is the sectional view of exemplary bulging box;

Figure 12 is the left skeleton view of sinciput of the box of drum shown in Figure 10;

Figure 13 is the left skeleton view of the sinciput of handle box shown in Fig. 3;

Figure 14 is the left skeleton view in rear top of handle box shown in Fig. 3;

Figure 15 is the end front left skeleton view of handle box shown in Fig. 3;

Figure 16 is the planimetric map of handle box shown in Fig. 3;

Figure 17 is the left view of handle box shown in Fig. 3;

Figure 18 is the right view of handle box shown in Fig. 3;

Figure 19 is the front view of handle box shown in Fig. 3;

Figure 20 is the lateral side view that exemplary developer roll and developer provide roller;

Figure 21 (a) 21 (b) 21 (c) and 21 (d) show that the developer box in Fig. 4 is attached to the continuity partial left side view in the bulging box in Figure 11;

Figure 22 is the sectional view of the bulging box that shows of Figure 11;

Figure 23 (a) 23 (b) 23 (c) are the partial views of the bulging box in Figure 11, focus on display the left end portion of transfer roll; Figure 23 (a) is sectional view, and 23 (b) are skeleton views, and 23 (c) are also skeleton views;

Figure 24 is the vertical view of the imaging device inside that comprises the handle box in Fig. 3 that shows of Fig. 1;

Figure 25 is the side view of the exemplary left frame inside surface of the imaging device that shows of Fig. 1;

Figure 26 is the side view of the exemplary correct frame inside surface of the imaging device that shows of Fig. 1;

Figure 27 (a) and (b) illustrated respectively propelling and the retracted mode of exemplary connecting elements;

Figure 28 (a) and (b) be the schematic cross-section that includes the exemplary imaging device of exemplary connecting elements;

Figure 29 (a) and (b) be Figure 28 (a) and (b) shown in the side view of connecting elements;

Figure 30 is the sectional view of developer box shown in Fig. 4;

Figure 31 is the sectional view that comprises the exemplary processes box of exemplary developer box and drum box;

Figure 32 is the left skeleton view of the sinciput of developer box shown in Figure 31;

Figure 33 is the right skeleton view in the front end of developer box shown in Figure 31;

Figure 34 is the left skeleton view in rear top of developer box shown in Figure 31;

Figure 35 is the left skeleton view of sinciput of the box of drum shown in Figure 31;

Figure 36 is the right skeleton view in the front end of the box of drum shown in Figure 31;

Figure 37 is the left skeleton view in the rear end of the box of drum shown in Figure 31;

Figure 38 is the left view of the box of drum shown in Figure 31;

Figure 39 is the right view of the box of drum shown in Figure 31;

Figure 40 is the left skeleton view of the sinciput of handle box shown in Figure 31;

Figure 41 is the left skeleton view in the front end of handle box shown in Figure 31;

Figure 42 is the vertical view of the box of drum shown in Figure 31, includes reference dimension mark;

Figure 43 is the rear view of the box of drum shown in Figure 31, includes reference dimension mark;

Figure 44 is the front view of the box of drum shown in Figure 31, includes reference dimension mark;

Figure 45 is the left view of the box of drum shown in Figure 31, includes reference dimension mark;

Figure 46 is the upward view of the box of drum shown in Figure 31, includes reference dimension mark;

Figure 47 is the sectional view of the box of drum shown in Figure 42 along A-A line, includes reference dimension mark;

Figure 48 is the planimetric map of developer box shown in Figure 31, includes reference dimension mark;

Figure 49 is the rear view of developer box shown in Figure 31, includes reference dimension mark;

Figure 50 is the left view of developer box shown in Figure 31, includes reference dimension mark;

Figure 51 is the upward view of developer box shown in Figure 31, includes reference dimension mark;

Figure 52 is the sectional view of developer box shown in Figure 48 along B-B line, includes reference dimension mark;

Figure 53 is the left view of handle box shown in Figure 31;

Embodiment

Multiple specific structures have been illustrated in the description running through below, provide thorough understanding to one or more aspect of the present invention.Various aspects of the present invention can realize in the situation that not utilizing all these ad hoc structures simultaneously.In other example, well-known element is not described in detail, emphasizes various aspects of the present invention so can concentrate.

In order to form an image, the imaging device of for example laser printer and duplicating machine in photosensitive drums by laser beam irradiation so that before forming electrostatic latent image corresponding to the image that will form in photosensitive drums, the surface charging for example, with charging device (corona charging device) for example, to photosensitive device (photosensitive drums).Then developer (for example toner) the development sub-image for example, providing by developer conveying device (developer roll).For example, by transfer device (transfer roll) developer image forming is for example arrived, on recording medium (paper).The developer image being finally transferred is through heating and/or the pressure treatment of fixing device.

In below to the narration of the example embodiment aspect one or more of the present invention, for the ease of discussing, the side that laser printer 1 arranges protecgulum 7 is called as " front " or " front side ", and is substantially called as " afterwards " or " rear side " facing to the side that protecgulum 7 is set.For each independent sector of laser printer 1 and/or handle box 20, the side of each independent sector all based on laser printer 1/in the setting/attachment location of part similarly identify.About different in laser printer 1 can attached/separable parts, along being moved so that the direction that it is attached to laser printer 1 is separably regarded as installation direction by attached/separable object.Also have, when being placed in laser, object throws machine 1 into when inner, if a side is at left while seeing this object from the front of laser printer, this side is considered to " left side ", when being placed in laser, object throws machine 1 into when inner, if a side is right-hand while seeing this object from the front of laser printer, this side is considered to " right side ".

Further, as shown in Figure 1, when object is placed in laser printer 1 when inner, if side is in top side or top while seeing this object from the front of laser printer, this side is considered to " top side or upside ".As shown in Figure 1, when object is placed in laser printer 1 when inner, if side is in bottom side or bottom while seeing this object from the front of laser printer, this side is considered to " bottom side or downside ".For example, the first catoptron 24 is positioned at top or the top of laser printer 1, and platen member 15 is positioned at bottom or the bottom of laser printer 1.

In the following description, the width of object or Width refer to the direction of substantially extending from left side to right side or from right side to left side or axis, object length or length direction refer to the direction or the axis that substantially extend from the front side to rear side or from rear side to front side.Therefore in the following description, for example, the width of an object may be greater than length, and the width of another object may be less than the length of object.Further, in the following description, the height of object or thickness direction refer to basic from bottom side to top side or contrary direction or axis.Equally, in following description, although a device may be called as roller, be not limited to again roller, for example this device can be the form of a travelling belt.

Further, although each feature may be stated as " front " " afterwards " " left side " " right side " such feature, this is never in order to limit the such arrangement of these features.Skilled person in this area can understand the position of each feature and arrange the position/arrangement that may be different from the feature of narrating herein.In being described below equally, something is called as " basic Z ", has in fact comprised " accurate Z " and " about Z " two meanings.About specific distance and size, unless there is special explanation, " Y millimeter " comprises " accurate Y millimeter " and " approximately Y millimeter ".

Fig. 1 and 2 has shown as the laser printer 1 of exemplary imaging device sectional view along its length.Laser printer 1 comprises main casing 2, for being fed to the feedthrough part 4 as the paper 3 of recording medium, and for the imaging moiety 5 of imaging on be fed to paper.

Main casing 2 has attached/dismounting chamber 6 and a protecgulum 7.Attached/dismounting chamber 6 holds can be attached/handle box 20 of dismounting.Handle box 20 can be packed into and be shifted out attached/dismounting chamber 6 by the approach of protecgulum 7, thus make handle box 20 can be attached with main casing 2/dismounting.

For example protecgulum 7 is supported so that protecgulum 7 can rotate rotationally by the axle (not shown) on main casing 2, thereby allows to enter attached/dismounting chamber 6 or cover attached/dismounting chamber 6.In exemplary laser printer 1, axle is arranged on the bottom of protecgulum 7.Certainly protecgulum 7 can/dismounting attached by any reasonable manner to put into/to shift out or attached/demounting process cartridge 20.

Protecgulum 7 can comprise that a lug boss 351 for example, to reduce the possibility that preferably prevents from installing incorrect replacing box (handle box).When protecgulum 7 close/lug boss 351 is towards laser printer 1 internal protrusion when attached, and lug boss extend in the receptacle 352 (Fig. 5) of handle box 20 in the time that handle box 20 is attached on laser printer 1.In the time that protecgulum 7 is opened/unloaded, bossing 351 does not occupy receptacle 352.

In some environment, for example office may adopt different types of imaging device, just may obtain being permitted eurypalynous replacement box.Like this, user may be installed to a replacement box on the printer of another one type.

By a lug boss 351 that extend into the receptacle 352 of handle box 20 in the time that protecgulum 7 is closed is set, if but a close handle box that there is no receptacle 352 of size/shape has been installed, in the time that user attempts to close protecgulum 7, lug boss 351 can correctly be closed by obstruction protecgulum.User will know incorrect handle box has been installed before attempting print image.

Comprising in the embodiment of such receptacle 352 and lug boss 351, because incorrect handle box is not received the corresponding receptacle 352 of lug boss 351, if install/be provided with incorrect handle box, protecgulum 7 cannot be closed like this.Although show in certain embodiments two receptacles 352 and two lug bosses 351, in some embodiment, receptacle 352 and lug boss 351 can be set, and can arrange in some embodiment more than two receptacles 352 and lug boss 351.

Further, in certain embodiments, lug boss 351 can be arranged on handle box 20 and receptacle 352 can be arranged on main casing 2.On each main casing 2 He on handle box 20, can comprise receptacle 352 and lug boss 351 in certain embodiments.

Feed part 4 comprises that paper provides dish 9, and paper provides roller 10, separating pad 11, and pick-up roller 12, folder is pinched roller 13 and a pair of registration rollers 14 (for example going up registration rollers and lower registration rollers)

Paper provide dish 9 can be attached with respect to the bottom of main casing 2/dismounting.Paper provides the leading section that roller 10 and separating pad 11 can be arranged on laser printer 1 to provide than paper the position that dish 9 is high.What separating pad 11 produced by Compress Spring defeats by paper provides roller 10.Pick-up roller 12 is arranged to provide the rear portion, lower end of roller 10 near paper, and the front portion, lower end of roller 10 pinched roller 13 and be arranged to provide near paper by folder

Pick-up roller 12 and folder have been pinched roller 13 and have been arranged to substantially provide roller 10 symmetries around paper.Upper and lower registration rollers 14 is arranged on pick-up roller 12 tops.More specifically, lower registration rollers 14 is arranged to provide near paper the upper rear of roller 10, and upper registration rollers 14 is arranged on lower registration rollers 14 tops.

Paper provides dish 9 to comprise that can be supported the platen member 15 that a stacker placed on it is opened.Platen member 15 can be the form of plate.One end of platen member 15 can be provided dish 9 bottom to support by paper and the other end of platen member 15 can move up and down according to the paper height of accumulation disposed thereon if desired.

The function of platen member 15 is to open 3 so that top layer paper and the pick-up roller pressure contact of paper 3 to upper pressure paper, thereby the top layer paper of paper 3 can pick up and be provided roller 10 and separating pad 11 to transport towards paper by picked roller 12.

In embodiment as illustrated in fig. 1 and 2, be provided with one for promoting and support the lever 17 of front end of platen member 15.As illustrated in fig. 1 and 2, the cross section of lever 17 can substantially become L-type and be arranged on paper provides the leading section of dish 9.In the time that the paper 3 of maximum height is arranged on platen member 15, the first arm of lever 17 is basic substantially vertical with the first arm with platen member 15 the second arm parallel and lever 17.In the time that platen member 15 keeps substantially lying low (front-end and back-end of platen member 15 are apart from the laser printer 1 basic sustained height in bottom surface), the maximum height of paper 3 is substantially equal to the minimum point of pick-up roller 12 to the distance between the peak of platen member 15.

The upper end of lever 17 second arms is arranged on paper provides the lever shaft 18 of dish 9 front ends rotatably to support.In the time that paper provides dish 9 to be located in main casing 2, on lever shaft 18, apply one and clockwise rotate driving force, therefore in the time being deposited in the height of the paper 3 on platen member 15 or pick-up roller 12 and being applied to pressure on paper 3 and reducing, lever 17 rotates in a clockwise direction around the axis of lever shaft 18, thus the leading section of platen member 15 and the paper 3 that is arranged on platen member 15 is raised.

On the other hand, when paper being provided dish 9 lower or do not apply while clockwise rotating driving force at lever shaft 18 from main casing 2 dismounting, the front end of platen member 15 just can upwards not promoted by lever 17.Like this, the front end of platen member 15 moves down so that platen member 15 lies low (being that the front-end and back-end of platen member 15 and the bottom surface of laser printer 1 keep basic sustained height).When providing dish 9 just can be provided to coil in 9 at paper by user when main casing 2 is pulled down, paper fill out paper.

On the other hand, when paper provides dish 9 attached or be arranged on main casing 2 when interior, on lever shaft 18, apply and clockwise rotate driving force so that the front end of platen member 15 is lifted by lever 17 and the paper 3 of top presses pick-up roller 12.The rotation of pick-up roller 12 is sent the paper of top 3 into paper and is provided between roller 10 and separating pad 11.Providing the rotation of roller 10 to make paper 3 be sandwiched in paper by paper provides between roller and separating pad 11, and paper 3 is sent to folder and pinches roller 13 thus.

Provide the rotation paper 3 that roller 10 and folder are pinched roller 13 to be pinched at paper and provide roller 10 and folder to pinch between roller 13 by folder by paper, be then sent between upper and lower registration rollers 14.Upper and lower registration rollers 14 helps paper 3 further to deliver to the transfer position of imaging moiety 5.

Transfer position is between the photo-sensitive cell of for example photosensitive drums 92 and the transferring member of for example transfer roll 94.In transfer position, by the help of transfer roll 94 by developer image entrained photosensitive drums 92 to paper 3.

Imaging section 5 can comprise scanner 19, handle box 20 and photographic fixing portion 21.

Scanner 19 is arranged on the top of main casing 2, comprises lasing light emitter (not shown), rotatable polygonal mirror 22, f θ lens 23, the first catoptrons 24, lens 25, the second catoptrons 26.Lasing light emitter is according to corresponding to by the view data Emission Lasers bundle of the image being formed, and the laser beam then launched is by the be offset/deflection of rotatable polygonal mirror.

As shown in the dotted line of Fig. 1, bending before through f θ lens 23 by the first catoptron 24 in the light path (dotted line of Fig. 1) of this light beam through the laser beam of overshoot.From the laser beam of the first catoptron 24 by the second catoptron 26 again before bending through lens 25, when handle box 20 be arranged on main casing 2 when interior laser beam irradiation to the surface of photosensitive drums 92.

As shown in Figure 2, handle box 20 is can be with respect to main casing 2 attached or remove.In certain embodiments, the some parts of handle box 20 can be installed to main casing 2 or independently from removal wherein.As shown in Figure 3, handle box 20 can comprise can be attached/the bulging box 27 of dismounting, can be attached/developer box 28 dismantled.In different embodiment, handle box can be used as that a single element is attached to main casing 2 or for example, from removal (developer box 28 is attached to bulging box 27) wherein, and/or the various piece of handle box 20 (is for example roused box 27, developer box 28) can be separately attached on main casing 2 or for example, from wherein removing (developer box 28 can be attached to bulging box 27 after drum box 27 is attached to main casing 2 again, or developer box 28 can just be removed from drum box 27 before drum box 27 is moved out of main casing 2) as subelement that can attached/dismounting.As shown in Figure 8, the installation direction of developer box is that developer box 28 can be along this direction with respect to attached/direction of moving of dismounting chamber 6 so that separably attached developer box 28 to main casing 2.

In certain embodiments, no matter be that drum box 27 is attached in main casing 2 or separates with main casing 2, developer box 28 can the attached or dismounting with drum box 27.

In certain embodiments, developer box 28 only could the attached or dismounting with drum box 27 in the time that at least a portion of drum box 27 is moved out of main casing 2.

In certain embodiments, developer box 28 only could the attached or dismounting with drum box 27 while being moved out of main casing 2 completely at drum box 27, therefore, in such an embodiment, handle box 20 always as a single element with main casing 2 is attached and dismantle.

Fig. 4 is the sectional view along its length of embodiment of developer box 28.As shown in Figure 4, developer box 28 comprises the developer box housing 29 as the first housing, and developer provides roller 31, as developing roller 32, stirrer 46 and the thickness adjustment means 33 of the bearing carrier of developer.

Developer box housing 29 can be made up of the resin material of for example polystyrene, and has the shape with the overall box of open side 8.As shown in Fig. 4 and 7, developer box housing 29 has an open side 8, thereby makes some component exposure that arrange towards developer box 28 rear sides of developer box 28.Open side 8 allows a part 32A of developer roll 32 to appear and makes it in the time that developer box 28 is attached on bulging box 27, can approach photosensitive drums 92.

Developer box housing 29 comprises developer containing part 30, and developer provides portion 36, as the upper extension 37 of the first extension.The interior receiving photographic developer of developer containing part 30, for example toner.

The overall shape of developer box housing 29 is limited by upper frame 34 and underframe 35.As shown in Fig. 4-10, underframe 34 comprises left side wall 38 as an independent element, right side wall 39, lower wall 40, upper wall 41, upper front side wall 42, upper wall extension 50, left side wall extension 52, right side wall extension 53.Between left side wall 38 and right side wall 39, be provided with developer containing part 30, developer provides portion 36 and upper extension 37.

Upper wall extension 50, left side wall extension 52 and right side wall extension 53 limit upper extension 37.Left side wall extension 52 and right side wall extension 53 extend forward from left side wall 38 and right side wall 39 respectively.Lower wall 40 and upper wall 41 are substantially perpendicular to left side wall 38 and right side wall 39 extends.Lower wall 40 and upper wall 41 extend between left side wall 38 and right side wall 39.Lower wall 40 comprises rear portion 43 and anterior 44.As shown in Figures 4 and 5, be the wall of a leading edge from upper wall extension 50 to downward-extension as the upper front side wall 42 of the first wall portion.

In an exemplary embodiment, upper wall 41 defines along the upper wall opening 49 at developer box 28 tops.In the time that upper frame 35 is attached on underframe 34, upper wall opening 49 is covered by upper frame 35.In the time looking from the top of developer box, upper wall opening 49 has rectangular shape substantially, and in the time that upper frame 35 is not attached to underframe 34, and upper wall opening 49 manifests developer containing part 30 and developer provides at least a portion of portion 36.

As shown in Figure 7, lower wall 40 is clipped between left side wall 38 and right side wall 39.As shown in Figure 4, extend continuously from the front portion 44 of lower wall 40 at rear portion 43.Rear portion 43 provides the part of the lower boundary of portion 36 generally corresponding to the restriction developer of lower wall 40, and anterior 44 generally corresponding to the part on the border, lower front side of the restriction developer containing part 30 of lower wall 40.

More specifically, rear portion 32 defines developer provides the lower boundary of portion 36, and substantially between left side wall 38 and right side wall 39 and perpendicular to this two side, extends.In the embodiment of the developer box 28 shown in Fig. 4, in cross section alongst, the inside surface at the rear portion 43 of lower wall 40 has undaform shape.

From the left side of developer box 28 or when right side sees, the inside surface at rear portion 43 comprises the rake corresponding to the lower wall part of developer roll 32 belows, and the inner fovea part of the lower wall part of roller 31 belows is provided corresponding to developer, and substantially upwardly extending part.Substantially upwardly extending part has formed developer provides the lower separation 55 between portion 36 and developer containing part 30.

Anterior 44 comprise leading portion 44A and back segment 44B.Leading portion 44A is transitioned into back segment 44B at anterior 44 bottommost 44C.Anterior 44 also comprise an inside surface 44D as the outer boundary of developer containing part 30.The other one side relative with inside surface 44D is outside surface 44T.The back segment 44B of inside surface 44D is downward-sloping from lower separation 55.As shown in Figure 4, lower separation 55 is arranged on the point of crossing of rear portion 43 and anterior 44, and has reverse V-shaped cross section, and lower separation 55 provides the lower front portion of portion 36 and the lower rear portion of developer containing part 30 to separate in developer.

As shown in Figure 4, at least the inside surface 44D of the front portion 44 of the lower wall 40 of stirrer 46 belows be substantially inner concave shape and also be bent upwards towards upper wall 41 along the front side of stirrer 46.In an exemplary embodiment, the uppermost edge of leading portion 44A is connected in the front side of upper wall opening 49 external phase with upper wall 41.

According in some embodiment of the developer box aspect one or more of the present invention, the inside surface of wall or framework and outside surface can take on a different character (cross section or texture that the cross section of for example inside surface or texture can be different from outside surface).In certain embodiments, as shown in Figure 4, rib or supporting member can be set on the outside surface of lower wall 40.

As Fig. 3, shown in 9 and 10, the left and right sides of developer containing part 30 is by left side wall 38 and right side wall 39 corresponding part 38A separately, and 39A limits.And, ensuing to the description of example embodiment in, the bottom 30A of developer containing part 30 can be corresponding to the part of turning axle 59 belows that is arranged in the stirrer 46 that is contained in developer containing part 30 in developer containing part 30, and the top 30B of developer containing part 30 is corresponding to the part of turning axle 59 tops that is arranged in the stirrer 46 that is contained in developer containing part 30 in developer containing part 30.

On handle box 28, an align member 84 at least can be set so that in the time that handle box 28 is attached on bulging box 27 align member 84 can help to be correctly relevant to bulging box 27 localization process boxes 28.In an exemplary embodiment, be provided with two align members 84 at the bottommost 44C of the front portion 44 of lower wall 40, align member 84 work that combines with the teat 118 (Figure 11) of drum box 27.

In an exemplary embodiment, on anterior 44 outer bottom, two align members 84 are set.Align member 84 is tabular, separates one another along Width at recessed anterior 44 base portion of lower wall.Align member 84 provides even curface, and in the time that developer box 28 is attached on bulging box 27, this surface is positioned substantially on the top of outshot 118 of bulging box 27.As mentioned above, in an exemplary embodiment, outshot 118 is the protuberate of convex substantially.

Fig. 5 is the skeleton view that left side is seen from developer box 28 as shown in Figure 4, and Fig. 6 is the vertical view of developer box 28 as shown in Figure 4.As illustrated in Figures 5 and 6, the upper wall 41 of underframe 34 is substantially smooth.The upper wall 41 of underframe 34 extends between left side wall 38 and right side wall 39.The upper wall 41 of underframe 34 can also stretch out from each left side wall 38 and right side wall 39.Upper wall 41 couples together top and/or the upper surface of left side wall 38 and right side wall 39.

Upper wall 41 correspond essentially to upper wall 41 be positioned at developer roll 32 and developer provides the rear portion of a part for roller 31 tops to comprise a supporting member 57.As shown in Figure 3, the supporting member 57 of upper wall 41 is basic outstanding downwards.In an embodiment, support member 57 can be a plane institution movement, substantially between left side wall 38 and right side wall 39, on certain orientation, extending, and basic outstanding downwards towards developer roll 32.

As discussed above, upper wall 41 defines and exposes for example developer containing part 30 and developer the upper wall opening 49 of a part for portion 36 is provided.As mentioned above, in an exemplary embodiment, front portion 44 coboundarys of lower wall 40 are connected in the front side of upper wall opening 49 with upper wall 41.Upper wall 41 can extend forward and be connected continuously with upper wall extension 50 from anterior 44 coboundary.

Upper wall extension 50 can from the leading edge of upper wall 41 upwards front side wall 42 extend forward.In an embodiment, upper wall 41 can be mutually continuous with upper wall extension 50.As shown in Figure 5, upper wall extension 50 extends between left side wall extension 52 and right side wall extension 53.Upper wall extension 50 can also stretch out from each left side wall extension 52 and right side wall extension 53.The top surface of upper wall extension 50 can be substantially smooth, and the leading edge of upper wall extension 50 can be connected with upper front side wall 42.

Upper front side wall 42 can have the shape of basic plane and substantially vertically extend downwards from the coboundary of upper wall extension 50.As shown in Figure 5, the part of upper front side wall 42 between left side wall extension 52 and right side wall extension 53 extends downwardly into the half of developer box housing 29 thickness, extends to respectively a part for the upper front side wall 42 outside left side wall extension 52 and right side wall extension 53 to less amount of downward-extension.

For example, protruding member 51 can be from the lower limb of upper front side wall 42 to downward-extension.In an embodiment, protruding member 51 correspond essentially to left side wall extension 52 and right side wall extension 53 leading edge part from the lower limb of front side wall 42 to downward-extension.In an embodiment, protruding member 51 is members of the rectangular plate shape that is substantially thin, progressive forming, and with upper front side wall 42 at grade.As shown in Figure 5, ignore notch 80, upper front side wall 42 and protruding member 51 form one inverted U-shaped, there is substantially smooth outside surface.

As shown in Figure 5, the base portion of inverted U is formed by upper front side wall 42, and the basic core of upper front side wall 42 can curve inwardly to form notch 80, below will discuss.

As mentioned above, in the embodiment shown in Fig. 6, left side wall 38 and right side wall 39 are substantially parallel to each other, and are connected with lower wall 40 by upper wall 41.Upper wall 41 and lower wall 40 are substantially perpendicular to left side wall 38 and right side wall 39 extends.

The back edge of left side wall 38 and right side wall 39 can extend to the back edge at lower wall 40 rear portions 43 and the back edge of upper wall 41 and can limit the open side 8 of developer box housing 29.The leading edge of left side wall 38 and right side wall 39 can extend to front side wall 42 and/or protruding member 51.

The front side of the front portion 44 of lower wall 40 is bent upwards along the front side of the excircle path of stirrer 46 substantially, can divide and be connected with the middle front part of left side wall 38 and right side wall 39, to limit the corresponding part 38A of left side wall 38 and right side wall 39,39A.

The inside surface of facing the front portion 44 of the lower wall 40 of stirrer 46 defines the front portion of developer containing part 30.In the face of rousing box 27 and comprising that the outside surface of the front portion 44 of the lower wall 40 of align member 84 defines the rear boundary of extension 37.

Upper wall extension 50, left side wall extension 52 and right side wall extension 53 (i.e. the first oppose side wall extension) extend continuously and onwards from the outside surface of the front portion 44 of lower wall 40.More specifically, upper wall extension 50, left side wall extension 52 and right side wall extension 53 vertically extend from the front portion 44 of lower wall 40 substantially.

In certain embodiments, upper extension 37 can from the left side of developer box housing 29 or extend on right side and it is bending or continuous to extend at length direction outside the front portion 44 of lower wall 40 to extend ground with certain angle.In certain embodiments, 37 of upper extensions protrude into forward outside lower wall 40 to such an extent as to any part of upper extension 37 does not project upwards outside upper wall 41.

Although provided herein to the description of wall and part in, wall and partly can be described as continuously and be connected/extend, in certain embodiments, for example wall can be made up of some attached wall parts or sections.

As shown in Figures 4 and 5, the upper frame 35 of developer box can have the global shape of substantially flat, can upwards protrude a little to form a part for projection a little corresponding to a part for the upper frame 35 of developer containing part 30.As above, described in discussing, upper frame 35 is attached together and the upper wall opening 49 of underframe 34 is sealed with underframe 34.

As shown in Figure 4, upper frame 35 can comprise the rib 54 of multiple inside surfaces along upper frame 35.Rib 54 can extend and be substantially parallel to each other along Width between left side wall 38 and right side wall 39.Between adjacent rib 54, there is predetermined space.

As mentioned above, lower separation 55 projects upwards from lower wall 40, provides the bottom of portion 36 and developer containing part 30 to separate in developer.Lower separation 55 can be separated 56 alignings in fundamental sum, and upper separation 56 is outstanding downwards from the inside surface of the upper frame 35 towards developer roll 32.

As shown in Figure 4, between upper separation 56 and lower separation 55, there is an intersegmental gap.This gap is corresponding to providing by the developer being stored in developer-accommodating part 30 developer passage 58 that portion 36 is provided to developer.Upper separation 56 and lower separation 55 also define developer the front side of portion 36 and the rear side of developer containing part 30 are provided.

Comprise that with the developer box housing 29 of feature as above one is positioned at lower separation 55 and upper separation 56 inner space below.Being positioned at lower separation 55 and upper separation 56 inner space below defines developer portion 36 is provided.Lower separation 55 and upper separation 56 inner space above define developer containing part 30.

In different embodiment, be stored in developer in developer containing part 30 and can be a kind of nonmagnetic one-component toner that can positive charge.Toner can be a kind of polymerized toner, by the known polymerization such as suspension polymerization, polymerisable monomer copolymerization is obtained.Polymerisable monomer can be such as styrene monomer (as, styrene) styrene-based monomers, or such as acrylic acid, alkyl (C1-C4) acrylate, or the acrylic monomer of alkyl (C1-C4) methacrylate.Polymerization process forms the good spherical toner particle of mobility substantially, to obtain high-quality image.

Paraffin and/or can mix mutually with toner such as the colorant of carbon black.For the mobility that improves toner also can be added silica.In different embodiment, the mean grain size of toner greatly about 6um between 10um.

As shown in Fig. 9 and 10, in certain embodiments, developer containing part 30 can respectively be furnished with a toner detecting window 85 on each left side wall 38 of underframe 34 and right side wall 39.Toner detecting window 85 can be arranged on left side wall 38 and right side wall 39 the lower position of facing so that toner detecting window 85 toward each other.

In the time that the developer level in developer containing part 30 reduces or is finished (, the developer amount of providing is insufficient, be not enough to stop that the light that irradiates a toner detecting window 85 is through developer containing part 30 and another toner detecting window 85), from developer low/light of empty sensor 371 (Figure 25) is through two toner detecting windows 85, then inspire developer low/spacing wave.Developer is low/and empty sensor 371 can be arranged in main casing 2.

The stirrer 46 that stirs developer (as toner) is contained in 30 li of developer containing part, and by developer passage 58, developer is offered to developer portion 36 is provided.As shown in Figure 3, the turning axle 59 of stirrer 46 is positioned at developer containing part 30 center substantially.The turning axle 59 of stirrer 46 is rotatably supported by left side wall 38 and right side wall 39.

Stirrer 46 comprises the agitating member 60 that for example extend on the border from rotation axis 59 to the developer containing part 30 being limited by the inside surface 44D of the front portion 44 of lower wall 40.Rotation axis 59 left ends that supported by left side wall 38 are through a part of 38A of left side wall 38, as shown in Figure 9.

In different embodiment, film (without diagram) can be arranged on the end of agitating member 60, like this in the time that agitating member 60 rotates, film is slided along the inside surface 44D of developer containing part 30, help to mix the developer (as toner) being stored in developer containing part 30 simultaneously.

As shown in figure 10, on right side wall 39, can be provided with a developer opening 47 is provided.Developer provides opening 47 in the time that developer containing part 30 is sky, and developer provides opening 47 can make developer containing part 30 be developed agent (for example toner) and fills up.It can be that to be positioned at a part of 39A of right side wall 39 upper and corresponding to the circular open in a part for developer containing part 30 that developer provides opening 47.Can be provided with one provides providing of opening 47 to cover member 48 for sealing developer.

As shown in Figure 10, provide and cover member 48 and can there is one and be a bit larger tham developer the part of opening 47 is provided, provide like this and cover this part of member 48 and the outside surface of right side wall 39 is overlapping to prevent that developer from providing opening 47 and leaking from developer.In certain embodiments, developer can be set opening 47 is provided.

As shown in Figure 4, be that the developer of developer box 28 provides portion 36 adjacent to developer containing part 30.Provide in portion 36 at developer, developer provides roller 31 to be arranged on developer and the front upper part of portion 36 is provided and is basically perpendicular to 38,39 extensions of left and right sidewall.Developer provides roller 31 to comprise to be provided roll shaft 62 and covers the sponge roll body 63 that roll shaft 62 outer circumference surfaces are provided.

Provide roll shaft 62 can use metal manufacture, sponge roll body 63 can be manufactured with conductive foams.As shown in Figure 9, in an embodiment, provide the left end of roll shaft 62 outstanding from left side wall 38, supported by left side wall 38 rotationally.

Developer roll 32 is also arranged on developer and provides in portion 36.As shown in Figure 4, developer roll 32 is arranged on developer provides the developer of portion's 36 rear lowers to provide after roller 31.Developer roll 32 and developer provide roller 31 pressure contact each other.As shown in Figure 3, the developer that a side of developer roll 32 is projected into developer box housing 29 a little provides outside the rear end 87 of portion 36, and exposes by the open side 8 of developer box housing 29.The rear end 87 of developer box housing 29 defines opening 16.

Developer roll 32 comprises a development roll shaft 64 and a roll body 65, extends along the direction perpendicular to left side wall 38 and right side wall 39.Roll body 65 at least covers a part for development roll shaft 64 excircles.Development roll shaft 64 can be used metal manufacture, and roll body 65 can be used the elastomeric material manufacture of conduction.Conductive rubber material can be conductive polyurethane or the silicon rubber that for example contains carbon particulate, and surface covers with fluorochemical urethane rubber or fluorine silicon rubber.

As shown in Figure 6, the two ends, left and right of development roll shaft 64 are outstanding from left side wall 38 and right side wall 39 respectively.As shown in figure 20, providing the right-hand member of roll shaft 62 and development roll shaft 64 right-hand members to be supported member 82 is rotatably supporting.Right side wall 39 inside be made and be arranged on to supporting member 82 can by dielectric resin material.Provide roll shaft 62 left ends and development roll shaft 64 left ends that an annular component 83 can be installed.In certain embodiments, annular component 83 is arranged on the two ends, left and right of development roll shaft 64.

Annular component 83 is conductor components, can be made up of electroconductive resin material, and making to develop provides roller 31 and developer roll 32 to maintain identical electromotive force.Providing on roll shaft 62 left ends of roller 31 is provided for development roll shaft 64 left ends and developer that annular component 83 is connected to developer roll 32 slidably.

The function that covers the annular component 83 of the part of the development roll shaft 64 of developer roll 32 is developer roll electrode 76.In the time that developer box 28 is removably disposed in or is attached in main casing 2, developer roll electrode 76 contacts with the developer roll contact element 175 of laser printer 1.

As shown in Figure 4, thickness adjustment part 33 is arranged on developer provides in portion 36.Thickness adjustment part 33 comprises an elastic component of being made up of elasticity/flexibility sheet metal 66, and a pressing element 67 that is positioned at elastic component 66 lower ends.Elastic component 66 can be the form of tabular component.Pressing element 67 can be semicircle or convex, can make with electrically insulating silicone rubber material.

Thickness adjustment part 33 is positioned at the place near developer roll 32.The upper end of elastic component 66 is supported by the support member 57 of upper wall 41 and/or upper wall 41, so that the pressing element 67 of elastic component 66 lower ends is pressed to the external peripheral surface of roll body 65 by the elastic force of elastic component 66.

As shown in Figure 9, in the embodiment of developer box 28, gear mechanism 45 can be arranged on left side wall 38.Fig. 9 is the left side view of the developer box 28 shown in Fig. 4, does not comprise gear cap 77.The function of gear mechanism 45, as driving force input media, is given developer roll 32, and developer provides roller 31 and stirrer 46 that Mechanical Driven power is provided.

Gear mechanism 45 comprises input gear 68, stirrer-driven gear 69, and neutral gear 70, developer roll driven wheel 71, provides roller driven wheel 72.In different embodiment, gear (for example stirrer-driven gear 69, neutral gear 70, developer roll driven wheel 71, roller driven wheel 72 is provided) can be the form with the outer peripheral discoideus member of sawtooth, and there is an opening at the center of plectane member.

This gear is around the axle rotation along Width also extends through gear centre opening substantially.The plane being limited by the rotation of discoideus member is parallel to or is arranged essentially parallel to left side wall 38 in the time of gear drive.In ensuing description, if gear (as, developer roll driven wheel 71, roller driven wheel 72 is provided, stirrer-driven gear 69, neutral gear 70) the plane parallel that limits of rotation in left side wall 38, this gear will be called as and be parallel to left side wall 38.Jagged outward flange is meshed with the jagged outward flange of another gear.

The function of input gear 68 is as driving force transmission member, and the upper rear portion that is arranged on left side wall 38 is basically parallel to left side wall 38.Neutral gear 70 is arranged essentially parallel to left side wall 38.Neutral gear 70 is arranged on the front left part of input gear 68 substantially.Neutral gear 70 is meshed with input gear 68.

Stirrer-driven gear 69 is arranged on the left end of turning axle 59 of stirrer 46.Stirrer-driven gear 69 is arranged to be arranged essentially parallel to left side wall 38.In the middle of stirrer-driven gear 69 is arranged at, driven wheel 70 is front right-hand.Stirrer-driven gear 69 is meshed in neutral gear 70.

Developer roll driven wheel 71 is arranged on the left end of development roll shaft 64.Developer roll driven wheel 71 is basically parallel to left side wall 38.Developer roll driven wheel 71 is at the rear left of input gear 68.Developer roll driven wheel 71 is meshed with input gear 68.

Provide roller driven wheel 72 to be arranged on the left end that roll shaft 62 is provided.Provide roller driven wheel 72 to be arranged essentially parallel to left side wall 38.Provide roller driven wheel 72 to be substantially arranged at input gear 68 belows.Provide roller driven wheel 72 to be meshed with input gear 68.

Stirrer-driven gear 69, developer roll driven wheel 71 and provide roller driven wheel 71 respectively with turning axle 59, development roll shaft 64 and provide roll shaft 62 one rotations.That is to say stirrer-driven gear 69, developer roll driven wheel 71 and provide the roller driven wheel 71 can not be with respect to turning axle 59, development roll shaft 64 and provide roll shaft 62 to rotate.

As shown in Figure 9, a connecting hole 74 is set in the basic core of input gear 68.Connecting elements 73 (Figure 26) connects by connecting hole, and driving force is inputted by this connecting elements.The connected mode of connecting elements 73 can with input gear 68 integral-rotations.The connected mode of connecting elements 73 can not be rotated with respect to input gear 68 it.

As shown in Fig. 5 and 8, the gear cap 77 that gear mechanism 45 can be installed on left side wall 38 covers.Gear cap 77 can comprise that at least one is basically parallel to the wall that left side wall 38 extends.Gear cap 77 can comprise multiple from above-mentioned at least one the wall wall portion that sidewall 38 extends left.The wall of at least one can comprise one or more openings.Described opening allows to approach each gear (for example input gear 68, developer roll driven wheel 71, provides roller driven wheel 71, stirrer-driven gear 69, neutral gear 70) and/or toner detection window 85 and toner and surveys opening 101.As shown in Figure 8, gear cap 77 can comprise an opening 75 that can touch by it input gear 68.Gear cap 77 can comprise that exposes the opening 75 of input gear 68 to allow input gear 68 to rotate rotatably.

Gear cap 77 also covers neutral gear 70, stirrer-driven gear 69, developer roll driven wheel 71 and the whole or a part of of roller driven wheel 72 are provided.The left end of development roll shaft 64 is outwards projected into outside the outside surface of gear cap 77.Development roll shaft 64 is outstanding by left side wall 38, and the interval through left side wall 38 and gear cap 77 is extended and is outwards projected into outside the outside surface of gear cap 77 on Width (, being substantially perpendicular to left side wall 38).

Can be provided with a lid extension 86 at the upper forepart of gear cap 77.Lid extension 86 is outwardly from gear cap 77 on Width, and is basically parallel in the longitudinal direction left side wall 38 and extends.Lid extension 86 is partly overlapping with the top of left side wall extension 52 and extend slightly above upper wall 41.

As shown in Figure 13, in the time that developer box 28 and drum box 27 are attached, lid extension 86 is arranged at the left side of the left side wall 96 of bulging box housing 91, next can discuss.Lid extension 86 reduces the possibility bending of the left side wall 96 of drum box housing 91.

Although the embodiment of developer box 28 comprises gear cap 77, can omit in certain embodiments gear cap and/or lid extension.In certain embodiments gear cap 77 and/or lid extension 86 can with developer box housing 29 whole installations.

As shown in Figures 5 and 6, in an embodiment, in upper extension 37, be provided with grip part 78 and developer box and protrude 79.Grip part 78 comprises the handle 81 in the notch 80 of conduct first cut-out that is arranged on extension 37.Notch 80 (the first slot-open-section) forms along the front top rake of upper extension 37, and extends along the leading edge of upper wall extension 50 and upper front side wall 42 and the basic core of top edge respectively.

In an embodiment, the formation that upper wall extension 50 does not resemble upper wall extension 50 adjacent to the part of notch 80 see from above substantially other parts of " U " font part extend forward far away.The part corresponding to notch 80 of upper front side wall 42 is being followed inwardly (backward) bending of leading edge of upper wall extension 50, and this upper wall extension 50 forms the part of " U " font substantially along the basic front central part of upper wall extension 50.

As mentioned above, in certain embodiments, developer box 28 can comprise the receptacle 352 at the front upper angle that is arranged in extension 37.As shown in Figure 5, receptacle 352 can be opening or the cut-out in upper front side wall 42 and upper wall extension 50.Lug boss 351 is outstanding from the protecgulum 7 of laser printer 1, and helps to reduce install in main casing 2/attached possibility of incorrect developer box.More specifically, the setting position of receptacle 352 makes it in the time that protecgulum 7 is shut, can receive corresponding lug boss 351, and in embodiment as shown in Figure 5, this receptacle 352 is corresponding to the left front upper end of developer box 28.As shown in Figure 2, in the time that developer box 28 is installed/is attached in Subjective and Objective 2 separably, developer box 28 along the installation direction of developer box be moved and the installation direction of developer box can with for example when developer box 28 entered along assigned direction laser printer 1 attached/width of developer box extends when dismounting chamber 6 direction is identical.As shown in Figure 2 and Figure 8, in specific embodiment, when when moving developer box 28 along the installation direction of developer box developer box 28 is attached on laser printer 1 separably, developer roller electrode 76 can be arranged on the downstream of input gear 68.That is to say, in certain embodiments, input gear 68 can be arranged on respect to the installation direction of developer box 28 upstream of developer roller 76.

Figure 11 is the sectional view alongst of embodiment of bulging box 27 as shown in Figure 1, wherein rousing box 27 and be can be attached/dismantle processed box 20 and/or main casing 2 adopts.Figure 12 is the sinciput left side perspective view of the bulging box 27 shown in Figure 11.

As shown in Figure 11 and 12, drum box 27 comprises bulging box housing 91, as the photosensitive drums 92 of Electrifier frame, photoreceptor, charger 93 (as, grid-control formula corona charging device), transfer roll 94 and cleaning brush 95.Charger 93 is grid-control formula corona charging devices, as the charging device for charging to photosensitive drums 92 external peripheral surfaces.Transfer roll 94 is the transfer devices for being transferred in the image developing in photosensitive drums 92.Cleaning brush 95 is the external peripheral surfaces for clean photosensitive drums 92, removes developer image and is retained in developer on the photosensitive drums 92 external peripheral surfaces cleaning device of (as, toner) after to paper 3.

Drum box housing 91 can be made with resin material.For example, polystyrene can be in order to form bulging box housing 91.Drum box housing 91 can comprise left side wall 96, right side wall 97, diapire 98, lower front side wall 99 and upper rear wall 100 (as the second wall part).

As shown in Figure 12, the left side wall 96 and the right side wall 97 that rouse box housing 91 are arranged to substantially parallel to each other.Between left side wall 96 and right side wall 97, there is certain space.More specifically, left side wall 96 is faced with the inside surface of right side wall 97 mutually with the inside surface that right side wall 97 is configured to left side wall 96.Photosensitive drums 92 is arranged between left side wall 96 and right side wall 97.Photosensitive drums 92 is substantially perpendicular to left side wall 96 and right side wall 97 around the turning axle of its rotation.

Drum box housing 91 comprises bulging accommodation section 102, and developer box holds the portion of putting 103 and lower extension 104.

Left side wall 96 and right side wall 97 comprise rear side wall portion 105L separately, 105R, front side wall portion 106L, 106R, and the 107L of wall extension portion, 107R.In an embodiment, the various piece of left side wall 96 (is rear side wall portion 105L, front side wall portion 106L and the 107L of wall extension portion) feature be different from the various piece (, rear side wall portion 105R, front side wall portion 106R and the 107R of wall extension portion) of right side wall 97.The feature of the various piece in the embodiment relevant with one or more aspects of the present invention is described in the back.

The rear side wall portion 105L of left side wall 96 and right side wall 97,105R can respectively comprise the first wall 108L, 108R, the second wall 109L, 109R, the 3rd wall 110L, 110R.The rear side wall portion 105L of left side wall 96 can further comprise wall 111, the five wall 112, the six walls 113 and the 7th walls 114.

As shown in Figure 14-17, the first wall 108L of rear side wall portion 105L extends back from the front side wall portion 106L of left side wall 96.The second wall 109L can be arranged essentially parallel to the first wall 108L, and the while is lower right-hand the first wall 108L's.

The 3rd wall 110L is substantially perpendicular to the first wall 108L and the second wall 109L, to connect the bottom boundaries of the first wall 108L and the top boundary of the second wall 109L.Wall 111 is arranged essentially parallel to the first wall 108L, is arranged between the first wall 108L and the second wall 109L and top.

The 5th wall 112 connects the bottom boundaries of wall 111 and the coboundary of the first wall 108L.The 6th wall 113 is arranged at the first wall 108L, the second wall 109L and wall 111 rear right-hand.The 7th wall 114 is by the second wall 109L, and wall 111 and the 6th wall link together.

In an exemplary embodiment, the first wall 108L of the rear side wall portion 105L of left side wall 96, the second wall 109L, the 3rd wall 110L, in wall 111, the five wall 112, the six walls 113 and the 7th wall 114, the first wall 108L is positioned at outermost (as, Far Left).The first wall 108L for example extends along the plane identical with front side wall portion 106L, from the side time, substantially around the core of the rear side wall portion 105L of left side wall 96.The rear section, top of the first wall 108L can be Curved, corresponds essentially to the shape of photosensitive drums 92 parts.

As shown in FIG. 17 and 18, the second wall 109L, 109R can be del, leg-of-mutton the second wall 109L, at least a portion on 109R " base " is connected to the 3rd wall 110L separately, on 110R, such the second wall 109L, 109R is from the 3rd wall 110L separately, and 110R is to downward-extension.The second wall 109L, the basal surface of 109R can respectively have a relatively circular or pointed part.As shown in Figure 17, each the second wall 109L, the thickness of 109R can be at the second wall 109L, and 109R middle part is substantially the thickest.The second wall 109L, the thickness of 109R can be towards the second wall 109L, and the front and rear of 109R reduces (, forming a del) gradually.Transfer roll 94 is contained in each second wall 109L, between 109R.The second wall 109L, 109R separately the thickest part is located substantially on ground-electrode 127 and transfer printing electrode 137 belows.

As mentioned above, each the 3rd wall 110L, 110R the second wall 109L separately, the top of 109R and separately the first wall 108L, the bottom of 108R links together.Each second wall 109L, 109R relatively point or relatively round feather edge corresponding to each rear side wall portion 105L, the bottommost of 195R.

The concavity feather edge of wall 111 is totally corresponding to the shape of photosensitive drums 92 appropriate sections.Wall 111 can be positioned at the first wall 108L upper right side, the upper left side of the second wall 109L.The top of wall 111 is corresponding to the top of rear side wall portion 105L.The top edge of wall 111 tilts with respect to horizontal direction, and the rearmost end of the top edge of such wall 111 is lower foremost than the top edge of wall 111.

The 5th wall 112 is connected the top of the first wall 108L with the bottom of wall 111.The 5th wall 112 is substantially perpendicular to the first wall 108L and wall 111.The 6th wall 113 assumes diamond in shape substantially, extends, and comprise the inside part of rear side wall portion 105L in a plane that is basically parallel to the first wall 108L.

The 7th wall 114 connects a part and the wall 111 of the 6th wall 113, also connects the 6th wall 113 another part and the second wall 109L.In an embodiment, the 7th wall 114 is connected a side of the 6th wall 113 of basic diamond shaped with the rear portion of wall 111, also the opposite side of the 6th wall 113 of basic diamond shaped is connected with the rear portion of the second wall 109L.In an embodiment, the 7th wall 114 is basically perpendicular to the first wall 108L.

As shown in Figure 17, a part for photosensitive drum driving gear 191 extends outwardly into outside the first wall 108L rear portion.In an embodiment, photosensitive drum gear opening 196 is arranged between the 3rd wall 110L and the 5th wall 112.Photosensitive drum gear opening 196 exposes a part for photosensitive drum driving gear 191.

Figure 18 is the right side view of the handle box 20 shown in Fig. 3.Figure 19 is the front view of the handle box 20 shown in Fig. 3.Figure 22 is the cross-sectional view of the bulging box 27 shown in Figure 11 along Width.

As Figure 18, shown in 19 and 22, the rear side wall portion 105R of right side wall 97 can integrally with the first wall 108R, and the second wall 109R and the 3rd wall 110R are set together.In an embodiment, as Figure 17, shown in 18 and 19, the first wall 108R shape of the rear side wall portion 105R of right side wall 97 is different from the shape of the first wall 108L of the rear side wall portion 105L of left side wall 96.

And the shape of the second wall 109R of the rear side wall portion 105R of right side wall 97 corresponds essentially to the global shape of the second wall 109L of rear side wall portion 105L of left side wall 96 and the 6th wall 113 bottoms of the rear side wall portion 105L of left side wall 96.The 3rd wall 110R of the rear side wall portion 105R of right side wall 97 links together the second wall 109R top of the rear side wall portion 105R of the bottom of the first wall 108R of the rear side wall portion 105R of right side wall 97 and right side wall 97.

Figure 11 and 12 has shown the front side wall portion 106L of left side wall 96 and right side wall 97,106R can comprise an axle guide portion 115, and this axle guide portion 115 is for being attached to developer box 28 in bulging box 27 or guiding respectively left end and the right-hand member of development roll shaft 64 while dismantling from drum box 27.Can be provided with a developer roll axle receptacle 116 in the rear end of axle guide portion 115, in the time that developer box 28 is attached on bulging box 27, this developer roll axle receptacle 116 can be used as stopping or control member of development roll shaft 64 ends for being guided along axle guide portion 115.

Axle guide portion 115 defines the front side wall portion 106L of bulging box housing 91 each left side walls 96 and right side wall 97, the coboundary of 106R.Axle guide portion 115 comprises three parts that arrange from front to back: horizontal part 115A, the first rake 115B and the second rake 115C.In an embodiment, the first rake 115B more tilts than the second rake 115C with respect to horizontal direction.

Developer roll axle receptacle 116 can be formed as the notch of the basic side direction U-shaped being formed to upper process and with the equitant concave wall 117 in rear portion of the axle guide portion 115 of each left and right sidewall 96,97 a little by the top from rear side wall portion 105R and 105L.

As shown in Figure 12, in an embodiment, the left side wall 96 of drum box housing 91 and the 107L of wall extension portion of right side wall 97,107R can with left side wall 96 separately and the front side wall portion 106L of right side wall 97,106R forms and continuously on same level.

As shown in Figure 11 and 15, can arrange bulging box housing 91 diapire 98 so that its be substantially clipped between the bottom of each left and right sidewall 96 and 97.Diapire 98 can comprise rear bottom wall part 193, front bottom wall part 194 and end wall extension portion 195.

Rear bottom wall part 193 can for example link together the bottom of the second wall 109R of the bottom of the second wall 109L of left side wall 96 and right side wall 97.In an exemplary embodiment, rear bottom wall part 193 is substantially V-shaped.

Rear bottom wall part 193, front bottom wall part 194 and end wall extension portion 195 can one link together.End wall extension portion 195 can be clipped between the 107L of wall extension portion of left side wall 96 and the 107R of wall extension portion of right side wall 97 substantially.Front bottom wall part 194 can be clipped in the front side wall portion 106L of left side wall 96 and right side wall 97 substantially, between 106R.

Drum box housing 91 can comprise front side wall 99 from the leading edge of end wall extension portion 195 is substantially vertically upwardly extending.Lower front side wall 99 and end wall extension portion 195 can be formed as a notch 119.Notch 119 can be formed at the basic centre of lower front side wall 99 on Width.

In certain embodiments, lower front side wall 99 can have the notch 119 being formed on wherein, and end wall extension portion 195 can cross whole width of lower extension 104 substantially and length is extended so that look and can not see notch 119 from the bottom of drum box 27.

In other embodiment, can there be the form of multilayer in end wall extension portion 195, comprises the ground floor 195A being integrally formed with front bottom wall part 194, and can second layer 195B with separate attached with ground floor 195A.In this case, the ground floor 195A of end wall extension portion 195 can have the notch 119 being formed in ground floor 195A, and the alongst notch 119 front ends extensions from upper registration rollers 14 front sides to ground floor 195A of second layer 195B, and at least a portion of crossing width and the ground floor 195A of notch 119 along Width.Second layer 195B can with ground floor 195A attached with separate.

As shown in figure 12, the left and right sides of lower front side wall 99 can form with left and right sidewall 96 and 97 respectively continuously.As shown in figure 13, in the time that developer box 28 is attached on bulging box 27.Lower front side wall 99 is aimed on above-below direction with upper front side wall 42.In an embodiment, the front surface of lower front side wall 99 has dull and stereotyped shape.

As shown in Figure 13, in the time that developer box 28 and drum box 27 are attached, notch 119 can be arranged in the lower front side wall 99 of bulging box housing 91 position corresponding to the part of the notch 80 in the upper front side wall 42 of developer box housing 29.In an exemplary embodiment, as shown in Figure 12, notch 119 shapes are substantially rectangular.In the time that developer box 28 and drum box 27 are attached, the opening that has been combined to form a basic rectangle of the notch 119 in the notch 80 in upper front side wall 42 and lower front side wall 99.

As shown in figure 12, can form receptacle 120 at the left and right of lower front side wall 99 end.The receptacle 120 of lower front side wall 99 is received each raised member 51 of front side wall 42 projections from developer box housing 29, as described below.In an embodiment, each receptacle 120 by lower front side wall 99 forward projection concave part limit.

As shown in Figure 12 and 13, in the time that developer box 28 and drum box 27 are attached, protruding member 51 can be received by corresponding receptacle 120.

Turn to now the rear portion of bulging box 27, as shown in figure 11, thereby drum box 27 can comprise along Width and extends the upper rear wall 100 that can be connected with rear side wall portion 105L separately, the 105R of left and right sidewall 96,97.It is dull and stereotyped shape that upper rear wall 100 has basic, and with respect to horizontal direction tilt so that the front end of upper rear wall 100 higher than rear end.

Upper rear wall 100 can comprise the laser entrance window 121 of a basic rectangular shape extending on drum box 27 Widths in its front portion.The charger supporting member 122 that supports charger 93 can be set on upper rear wall 100, and support the brush supporting member 123 of cleaning brush 95.

As shown in FIG. 11 and 12, each rear side wall portion 105L, the 105R that rouse box housing 91, left and right sidewall 96,97 are connected by the rear bottom wall part 193 of upper rear wall 100 and diapire 98.Rear bottom wall part 193 can be arranged in rear wall 100 opposite faces in above-below direction fundamental sum and rouse accommodation section 102 to limit at least a portion.

Drum accommodation section 102 can be arranged at the rear end of bulging box housing 91 and can be a basic closed space.As shown in Figure 11 and 12, drum accommodation section 102 has a basic open front side, and its upside, rear side and downside are substantially closed.Basic open front side can make photosensitive drums 92 attached with other members and/or contact.At least a portion of photosensitive drums 92 exposes from the open front side of drum accommodation section 102.

Each front side wall portion 106L, the 106R of left and right sidewall 96,97 forms developer box accommodation section 103 together with the front bottom wall part 194 of diapire 98.Developer box accommodation section 103 can be substantially disposed in the centre of bulging box housing 91.In an embodiment, 103Qi top side, developer box accommodation section is open, can itself and drum box 27 is attached together by developer box 28 being put into developer box accommodation section 103.

As mentioned above, rouse box housing 91 and comprise lower extension 104.Lower extension 104 can be extended from the front side of developer box accommodation section 103, and drum accommodation section 102 can be extended from the rear side of developer box accommodation section 103.The 107L of wall extension portion of left side wall 96, the 107R of wall extension portion of right side 1 wall 97, the end wall extension portion 195 of diapire 98 forms lower extension 104 together with lower front side wall 99.

As shown in FIG. 11 and 12, bottom extension 104 defines the space that extends to bulging box housing 91 front sides from developer box accommodation section 103.In an embodiment, lower extension 104 is continuous with developer box accommodation section 103, and the top side of lower extension 104 is open.

As shown in Figure 11, front bottom wall part 194 can comprise First 194A and second 194B, is arranged to step-like.Opening 332 is formed between First 194A and second 194B, and paper 3 can enter and pass through from this opening.The upper surface 194D of second 194B tilts with respect to First 194A.And the upper surface 194D of second 194B can comprise the plate portion 331 of the inclination foremost that is positioned at second 194B, even more tilts with respect to First 194A.

As shown in figure 12, the upper surface 194D of second 194B can comprise multiple paper guiding rib 194C.Paper guiding rib 194C can extend substantially in the longitudinal direction and adjacent paper guiding rib 194C between there is interval.

And as shown in Figure 12, in certain embodiments, paper guiding film 333 is arranged at the rearward end of inclination board 331.As shown in Figure 12, paper guiding film 333 can be set to for example two parts, and these two parts are clipped in the middle the region with predetermined width in the center of inclination board 331 rearward end.By paper guiding film 333 is set, the paper 3 that enters bulging box 27 from opening 332 can guide film 333 to advance along paper, the external peripheral surface of the front end contact photosensitive drums 92 of paper 3.The front end of paper 3 is directed to based on being rotated between photosensitive drums 92 and transfer roll 94 of photosensitive drums 92.By the paper 3 that leads between photosensitive drums 92 and transfer roll 94 after paper 3 contacts photosensitive drums 92, reduce and preferably can get rid of the possibility that paper 3 negative effect photosensitive drums 92 are charged.

As shown in figure 11, photosensitive drums 92 is arranged in bulging accommodation section 102.Photosensitive drums 92 has the shape of cylinder and comprises the bulging body 124 that can be made up of the photographic layer of positive charge, and the bulging axle 125 that can be made of metal.The outmost surface of photosensitive drums 92 can be made up of polycarbonate.

In an exemplary embodiment, rouse axle 125 and rouse body 124 and extend on the Width of drum box 27.As shown in Figure 22, rousing axle 125 extends along the axle center of drum body 124.

Drum axle 125 is non-rotatably supported by left side wall 96 and the right side wall 97 of drum box housing 91, and rotating supporting member 190 is arranged on the left and right end portions of bulging body 124.Rotating supporting member 190 is rotatably supported by drum axle 125 so that drum body 124 and rotating supporting member can be rotated with respect to drum axle 125.

As shown in Figure 14 and 17, the left end of drum axle 125 is outstanding from the first wall 108L of left side wall 96.The outmost surface 125A of the left part 125B of drum axle 125 is as ground-electrode 127.Ground-electrode 127 is arranged at the ground-electrode contact site 171 in main casing 2 as an Electrifier frame, photoreceptor electrode contact.

The photosensitive drum driving gear 191 that can rotate around drum axle 125 in addition, is connected to rotate with drum body 124 one with the left end of drum body 124.That is to say, photosensitive drum driving gear 191 can not rotate with respect to drum body 124.As mentioned above and shown in Figure 14, photosensitive drum driving gear 191 exposes from photosensitive drum gear opening 196.

In an exemplary embodiment, Compress Spring 192 is arranged on the right-hand member of bulging body 124.On drum body 124 right-hand members, Compress Spring 192 can be arranged between right side wall and rotating supporting member 190.Compress Spring 192 can cause frictional resistance, frictional resistance apply the rotation for stoping drum driving gear 191, preferably prevent that to reduce drum body 124 from excessively rotating.

As shown in figure 11, charger 93 is arranged in bulging accommodation section 102 and by charger supporting member 122 and supports.Charger supporting member 122 can be arranged on the upper rear side of photosensitive drums 92.As mentioned above, charger 93 can arrange along upper rear wall 100.Charger 93 separates with photosensitive drums 93 and does not contact photosensitive drums 92.Charger 93 comprises charging wire 128, grid 129 and charging wire clearer 130.

Charger supporting member 122 also can support charging wire 128.Charging wire 128 extends between left side wall 96 and right side wall 97.Line electrode 131 is connected on the left end of charging wire 128, and available for example sheet metal member is made.As shown in Figure 14 and 17, line electrode 131 is fixed to the outside that is exposed to bulging box housing 91 from the wall 111 of left side wall 96 along the first slit 111A of up/down direction extension.

Grid 129 is arranged to extend below charging wire 128 between left and right sidewall 96,97 along the Width of drum box 28.Gate electrode 132 is made up of sheet metal member, can be attached at the left end of grid 129.Gate electrode 132 can be fixed into the second slit 111B of its wall 111 from left side wall 96 is exposed to outside bulging box 28.In the embodiment shown in Figure 14 and 17, extend the second slit 111B diagonal line for gate electrode 132 of wall 111 so that the top of gate electrode 132 than bottom more near drum box 27 rear portion.

Charger supporting member 122 also can support charging wire clearer 130.Charging wire clearer 130 can be clipped in the middle charging wire 128 substantially, and supports slidably along the Width of drum box 27.By cleaning charging wire 128 along the Width slip charging wire clearer 130 of drum box 27.

In drum accommodation section 102, also can be provided with transfer roll 94 in photosensitive drums 92 belows.Transfer roll 94 can comprise the transfer printing roll shaft 133 being made of metal, and the roll body 134 of being made up of ionic conduction rubber and at least cover a part for transfer printing roll shaft 133 excircles.

Figure 23 (a), 23 (b) and 23 (c) have described the left end of the transfer roll 94 of the box 27 of drum shown in Figure 11.More specifically, Figure 23 (a) has described the cross-sectional view on Width, Figure 23 (b) has described transfer printing electrode 137 and is being attached to the skeleton view of the situation on bulging box 27, and 23 (c) have described the skeleton view of transfer printing electrode 137 with drum box 27 attached places.

As shown in Figure 23 (a), at the left end of transfer printing roll shaft 133, a transfer roll driven wheel 135 can be set.Transfer roll driven wheel 135 can not rotate with respect to transfer printing roll shaft 133 in an embodiment.Two ends, left and right at transfer printing roll shaft 133 all can be provided with bearing components 136.A bearing components 136 can be arranged to adjacent with transfer roll driven wheel 135 inner sides.Bearing components 136 can rotate with respect to transfer printing roll shaft 133 and transfer roll driven wheel 135.The bearings member 144 that each bearing components 136 can be arranged on bulging box housing 91 diapires 98 supports.

Bearings member 144 can be the form of one or more ribs and/or groove.In an exemplary embodiment, the turning axle that the rib of each bearings member 114 is basically perpendicular to transfer printing roll shaft 133 along the inside surface of diapire 98 extends.The left and right end of transfer printing roll shaft 133 can rotatably be supported by one of them bearing components 136 respectively, and bearing components 136 is supported by one or more bearings members 144 on diapire 98.

Transfer printing electrode 137 is supported by the transfer printing electrode maintaining part 138 on drum box housing 91.As shown in Figure 23 (a), in an embodiment, the left end of transfer printing roll shaft 133 is through the bearing components 136 in left side with transfer roll driven wheel 135 is outstanding and contact with the electrode contact portion 141 of the transfer printing electrode 137 being supported by the transfer printing electrode maintaining part 138 of drum box housing 91.Like this, transfer printing roll shaft 133 can be so set, for example, make to extend between its transfer printing electrode 137 on the left side of the bearing components 136 on right side and drum box housing 91.

As shown in Figure 23 (b) and 23 (c), transfer printing electrode 137 can be made up of electroconductive resin material, and entirety comprises engagement member 139, teat 140 and electrode contact portion 141.Electrode contact portion 141 can leave the basic central part of engagement member 139 inside surfaces and give prominence to.In Figure 23 (a), electrode contact portion 141 is outstanding from the inside surface of engagement member 139.Transfer printing electrode 137 contacts the end surfaces of transfer printing roll shaft 133 left parts by electrode contact portion 141.Engagement member 139 can be the tabular component that supports teat 140.

In certain embodiments, engagement member 139 can form with teat 140 one.In an embodiment, as shown in figure 15, transfer printing electrode opening 142 is continuous openings that formed by the basic Rectangle Resection part on each the second wall 109L, the 3rd wall 110L of left side wall 96.More specifically, as shown in Figure 23 (b)-(c), cut-out on the 3rd wall 110L can for example be less than cut-out on the second wall 109L but less times greater than teat 140, thereby in the time that transfer printing electrode 137 is attached on bulging box housing 91, teat 140 does not contact with the 3rd wall 110L.Cut-out on the second wall 109L defines transfer printing electrode maintaining part 138.

The transfer printing electrode maintaining part 138 of drum box housing 91 comprises the transfer printing electrode receptacle 143 as receiving portion, in order to receive transfer printing electrode 137 in transfer printing electrode opening 142.In an embodiment, transfer printing electrode receptacle 143 is received engagement member 139.More specifically, in an embodiment, for attached transfer printing electrode 137, transfer printing electrode 137 inserts from drum box housing 91 inner sides, and imports transfer printing electrode maintaining part 138, and wherein transfer printing electrode 137 engages with transfer printing electrode receptacle 143, has discussion below.

As shown in figure 15, the shape and size that transfer printing electrode opening 142 forms make teat 140 through the 3rd wall 110L in the time that transfer printing electrode 137 is inserted into the transfer printing electrode maintaining part 138 of the second wall 109L.

And, in the time that transfer printing electrode 137 is transferred electrode receptacle 143 and engages, transfer printing electrode opening keeps open state, because as mentioned above, in the time that transfer printing electrode 137 is attached on bulging box housing 91, transfer printing electrode opening 142 is configured to allow teat 140 by the 3rd wall 440L.When teat 140 is by after the 3rd wall 110L, transfer printing electrode opening 142 is not in open state (, being covered).

Transfer printing electrode 137 is just engaged with in transfer printing electrode receptacle 143 like this, as described below, using in the process of laser printer 1 the transfer printing electrode 137 can upward sliding and/or skid off transfer printing electrode opening 142 and transfer printing electrode receptacle 143.

Transfer printing electrode receptacle 143 can comprise for example two engage ribs 145, is positioned in transfer printing electrode opening portion 142 every sides and faces with each other.An engage ribs can be arranged on the front side of transfer printing electrode opening 142, and another engage ribs 145 can be arranged on the rear side of transfer printing electrode opening 142.

As Figure 23 (b) (c) as shown in, each engage ribs 145 can comprise in rib end a ratchet 147.Ratchet 147 has the shape of hook.Ratchet 147 helps transfer printing electrode 137 to be fixed in transfer printing electrode receptacle 143 so that transfer printing electrode 137 can not slide or shift out transfer printing electrode receptacle 143.

In an exemplary embodiment, as described below, transfer printing electrode 137 is arranged in transfer printing electrode maintaining part 138.As shown in Figure 23 (b), first, by the engagement member 139 that moves up in the side that is basically perpendicular to the 3rd wall 110L, the engagement member 139 that comprises teat 140 is positioned to transfer printing electrode receptacle 143 places of drum box housing 91.

In the time that engagement member 139 is arranged in transfer printing electrode receptacle 143, teat 140 with the orthogonal Width of the second wall 109L on outstanding from transfer printing electrode opening 142.Then one end of engagement member 139 engages with the ratchet portion 147 of a corresponding engage ribs 145.Then,, as shown in Figure 23 (c), engagement member 139 rotates so that the other end of engagement member 139 engages with the ratchet portion 147 of another engage ribs 145.

In the time that transfer printing electrode 137 is transferred electrode receptacle 143 and receives and be held in transfer printing electrode maintaining part 138, teat 140 is outwards outstanding from transfer printing electrode opening 142 on Width, can is engaged in and in engage ribs 145, be controlled the rotation that preferably prevents engagement member 139 by engagement member 139 like this.

As shown in Figure 23 (a), in the time that transfer printing electrode 137 is transferred electrode receptacle 143 and receives, the end face of transfer printing roll shaft 33 left ends and 141 sliding contacts of electrode contact portion.Under this state, transfer roll driven wheel 135 is provided between the outside surface of transfer roll driven wheel 135 and the second wall 109L at axially (Width) has a gap so that transfer roll driven wheel 135 can rotate freely in drum box housing 91.

As shown in Figure 11, cleaning brush 95 can be positioned to support in drum accommodation section 102 and by brush supporting member 123.Brush supporting member 123 can be arranged on the upper rear wall 100 at the bulging box housing 91 left and right sides places after photosensitive drums 92.

Cleaning brush 95 comprises many bristles, and bristle is planted on the holding plate of the basic rectangular strip extending with Width.Cleaning brush 95 is in the longitudinal direction in the face of photosensitive drums 92 location that lies low.Bristle contacts to clean sensitization drum of outer perimeter surface with the external peripheral surface of photosensitive drums 92.Clean electrode 148 is made up of for example sheet metal member, and is connected with the brush supporting member 123 in left side.Clean electrode 148 is fixed on brush supporting member 123 so that this electrode is outstanding from the left side of drum box 27.In an embodiment, as shown in Figure 14 and 17, clean electrode 148 is outstanding from being formed on basic vertical slits the 6th wall 113 of left side wall 96.

As mentioned above, in developer box accommodation section 103, teat 118 can be set.In an embodiment, each teat 118 contacts with one of them align member 84 of developer box 28.As shown in Figure 12, in an embodiment, between two teats 118, there is interval along Width.Two teats 118 are arranged in front bottom wall part 194.As shown in Figure 3, in the time that developer box 28 and drum box 27 are attached, each teat 118 is towards one of them align member 84 of developer box 28.Each teat 118 is the convex-shaped substantially raising up.

In certain embodiments, teat 118 can be arranged on align member 84 on developer box 28 and is arranged on bulging box 27.

As shown in Figure 15, be also arranged in developer box accommodation section 103 as the end rib 162 of the leader that guides paper 3.The end rib 162 in the past bottom surface of bottom wall part 194 is given prominence to downwards.End rib 162 can comprise rib 163 of multiple rear ends and rib of multiple middle ends 164.

Rib of the rear end 163 extends substantially in the longitudinal direction.On Width, between adjacent rib of the rear end 163, there is gap.Rib of multiple middle ends 164 can be positioned to more also can substantially alongst extend towards front portion than rib of the rear end 163.On Width, between adjacent rib of the middle end 164, there is gap.

As shown in Figure 12, in developer box accommodation section 103, toner is surveyed opening 101 and is arranged in the part that each left side wall 96 and right side wall 97 face, and light can be surveyed opening 101 by toner by/empty sensor 371 low from developer.As mentioned above, toner is surveyed the position of opening 101 on each left side wall 96 and the right side wall 97 of drum box 27 and is positioned at the position on left side wall 38 and the right side wall 39 of developer box 28 corresponding to toner detecting window 85.

At least a portion that each like this toner detecting window 85 and toner are surveyed opening 101 is aligned with each other so that the light launching from a side can be through every group of toner detection window and/or opening 85,101, and at least when toner amount is detected at opposite side during lower than predetermined value.

As mentioned above, in certain embodiments, when developer low/empty sensor 371 is while determining toner amount lower than scheduled volume, imaging device can provide one represent toner amount with sky or measure low signal and/or quit work, until toner amount is added.

Even, when toner amount is during higher than predetermined value/level, some light that launch from a side can be through toner detecting window and/or opening 85,101 and received at opposite side.Like this, if opposite side detects the light more than scheduled volume, toner developer is low/empty sensor 371 can be configured to trigger toner low/spacing wave.

As shown in Figure 12, lower extension 104 can comprise that a pressurization part 149 and a bulging box protrude 150.Drum box protrudes 150 can help to guide and arrange bulging box 27 and/or the handle box 20 in the main casing 2 of laser printer 1.In drum box 27, drum box protrudes 150 107L of wall extension portion from each left side wall 96 and right side wall 97, and 107R is outstanding.

As shown in Figure 12 and 17, drum box protrudes 150 can be cylindric, and can be arranged to the 107L of wall extension portion, the 107R from left and right sidewall 96,97 respectively and give prominence to.Drum box protrudes 150 can be outwards outstanding respectively along the outside surface of Width front portion from the 107L of wall extension portion, 107R

In the time that developer box 28 and the developer box accommodation section 103 of rousing box 27 are attached, pressurization part 149 helps developer roll 32 to press to photosensitive drums 92.In the embodiment shown in Figure 12, at each left and right sides place of lower extension 104, a pressurization part 149 is set.

A pressurization part 149 can be set in certain embodiments, multiple pressurization part 149 can be set in other embodiment.Further, in the embodiment that comprises more than one pressurization part 149, dissimilar pressurization part 149 can be set.In certain embodiments, can be provided as the locking lever 153 of locking device, for developer box 28 being locked or be fixed on bulging box 27 after the developer containing part 103 developer box 28 being attached to bulging box 27.In certain embodiments, by pressing and/or pulling locking lever 153 that developer box 28 is discharged from drum box 27.

Figure 21 (a), 21 (b), 21 (c) and 21 (d) form developer box 28 shown in setting/attached Fig. 4 in the box 27 of drum shown in Figure 11, to form the overall process figure of the handle box 20 shown in Fig. 3.In the embodiment shown in Figure 21, do not show and cover extension 86.

Figure 21 (a) has shown that developer box protrusion 79 is positioned at the state of pressurization part 149 upsides.Figure 21 (b) has shown that developer box protrudes 79 states that contact with the guiding surface 154 of pressurization part 149.Figure 21 (c) shown developer box protrude 79 with guiding surface 154 and the fixed surface 155 of pressurization part 149 between the state that contacts of border.Figure 21 (d) has shown that developer box protrudes 79 states that just contacting with the fixed surface 155 of pressurization part 149.

As shown in Figure 21 (a)-(d), each pressurization part 149 can be furnished with a pressing element 151, when developer box 28 attached/be arranged in bulging box 27 and from drum box 27 separately time, pressing element 151 can engage and be disengaged the developer box protrusion 79 contacting separately.Can be arranged at each pressing element 151 belows as the spring 152 of thrust unit, pressing element 151 upwards be pressed to developer box corresponding on the left and right sides of bulging box 27 and protrude 79.

Pressing element 151 can be made up of thick tabular component, triangular shaped when having in the time that tabular component left and right sides is seen.In an embodiment, guiding surface 154 and fixed surface 155 form continuously.

Guiding surface 154 can be downward-sloping, and like this, the front portion of guiding surface 154 is positioned in the level higher than guiding surface 154 rear portions.Fixed surface 155 is downwards basic and side-prominent towards drum box 27 from guiding surface 154.Like this, the guiding surface of pressing element 151 154 is downwards basic and extend back, and fixed surface 155 is downwards basic and extend forward, and therefore guiding surface 154 and fixed surface 155 have formed an obtuse angle.Guiding surface 154 and fixed surface 155 are all towards drum box housing 91 rear portions.

Pressing element 151 can be arranged on bulging box housing 91 by an installation/attachment 156, and this portion can be attached to the lower end of pressing element 151 on bulging box housing 91.The lower end of installation/attachment 156 can be kept movably by a stationary shaft 157, stationary shaft 157 basic on Width from the 107L of wall extension portion, the 107R of left and right sidewall 96,97 inwardly (to drum box housing 91 inside) outstanding.

One end of each spring 152 can be fixed on the lower front portion of end wall extension portion 195.As mentioned above, each spring 152 other ends can be engaged or are pressed against on the bottom surface of pressing means 151 by the bottom surface of pressing element 151.As shown in Figure 21 (a)-21 (d), in an exemplary embodiment, in the different conditions of attached/detachment process, the setting in drum box housing 91 of the power applying due to spring 152 and spring 152, corresponding pressing element 151 is pushed to maintain the state of inclination, and spring 152 is than the front portion of the more close drum box 27 of pressing element 151 like this.

As shown in figure 13, locking lever 153 can be arranged on the left end of lower extension 104.Locking lever 153 can be arranged near pressing element 151.Locking lever 153 can have a base portion, two legs is outwards outstanding from base portion, wherein one leg is the elastic component 159 extending substantially vertically from base portion one end, and another one leg is to leave the control member 158 that the base portion other end extends along diagonal substantially.

Control member 158 can be for mobile and control locking lever 153, so that developer box 28 is discharged from drum box 27.In order to help to discharge locking lever 153, control piece 158 can comprise at its one end place a grip part (as large/wider region with rib of the control piece 158 in Figure 12 and 21 (a)-(d)).

The base portion of locking lever 153 can form a contact developer box protrusion 79 and developer box is protruded to the contact site 161 of 79 " lockings " to appropriate location.One side of contact site 161 can be interior outstanding so that a surface to be provided to developer box 28 along Width, and developer box protrudes 79 and slides and also before the opposite side locking that is touched portion 161 as described below, on above-mentioned surface, slide at the inferior horn around contact site 161.As shown in figure 18, in the time that the developer box protrusion 79 on the left side wall 96 of developer box housing 28 is locked on appropriate location, the developer box on right side wall 97 protrudes 79 and can be arranged in the groove 16 of bulging box housing 91.Groove 16 can be substantially disposed in the top of the upper registration rollers 14 on the right side wall 97 of bulging box housing 91.

Elastic component 159 is thin latch shape members, as shown in Figure 21 (a)-21 (d), can bending and deflection, and help to lock and/or discharge corresponding developer box with respect to drum box 27 to protrude 79.Elastic component 159 can be from one end of locking lever 153 base portions towards lower extension 104 above to downward-extension.In an exemplary embodiment, the lower end of elastic component 159 for example engages with the rib (without diagram) of drum box housing 91.

In an exemplary embodiment, when developer box 28 is when with the drum attached state of box 27 or released state, be attached at the end of the elastic component 159 on locking lever 153 base portions generally than the control member 158 of the more close locking lever 153 of the other end of elastic component 159, control piece 158 generally keeps basic horizontal on the length direction of drum box 27, as Figure 21 (a), shown in 21 (b) and 21 (d).That is to say, due to the elastic force of elastic component 159, locking lever 153 is generally location like this, so that the end face of control piece 158 aims at substantially with upper wall extension 50, as shown in Figure 13 and 19.

As shown in Figure 21 (c), in an exemplary embodiment, in the time that corresponding developer box protrusion 79 is directed around the border between locking lever 153 and elastic component 159, elastic component 159 bendings or deflection make the one end being connected with locking lever 153 base portions on elastic component 159 move to more close control member 158 and pull control member 158, and developer box protrusion 79 can be arranged on contact site 161 belows (seeing Figure 21 (d)) of locking lever 153 like this.

As shown in Figure 21 (d), in the time that developer box protrusion 79 is arranged on contact site 161 below, as the result that developer box 28 is pressed to backward to the pressure of the photosensitive drums 92 of bulging box 27 of spring 152, pressurization part 149 assists in ensuring that developer roll 32 contacts with photosensitive drums 92.

As shown in Figure 15, upper registration rollers 14 and/or rib of the front end 165 can be along the outer bottom settings of lower extension 104.As mentioned above, upper registration rollers 14 can be for being passed to photosensitive drums 92 by paper 3.Upper registration rollers 14 can be arranged at the front end place of rib of the middle end 164 rotatably, goes up like this bottom surface of the basic end wall extension portion 195 along diapire 98 of registration rollers 14 and extends on Width.Upper registration rollers 14 is rotated around axle 14A.

In an exemplary embodiment, upper registration rollers 14 is positioned between the rib of the front end 165 and end rib 162 on Width.As shown in Figure 1, in the time that drum box 27 is attached on main casing 2, upper registration rollers 14 is positioned in above above-below direction towards lower registration rollers 14.

Set rib of the front end 165 can help to guide paper 3 by laser printer 1.As shown in Figure 15, front end rib 165 can be given prominence to downwards from the bottom surface of lower extension 104 and substantially extend at length direction.On Width, between adjacent rib of the front end 165, there is gap.Rib of the front end 165 can be arranged at the front side of registration rollers 14.As shown in Figure 15, front end rib 165 can be arranged to stride across Width.

In certain embodiments, notch 119 is formed on end wall extension portion 195 and lower front side wall 99, and as mentioned above, end wall extension portion 195 can comprise ground floor 195A and second layer 195B.In this case, end rib 165 before the outer bottom place of second layer 195B that strides across end wall extension portion 195 can arrange, the overlapped so that paper 3 of second layer 195B and notch 119 can more effectively be guided.

In certain embodiments, rib of the front end 165 is made up of the material that is different from the material of manufacturing drum box housing 91.For example, the material that rib of the front end 165 can be harder by the material than being used to form bulging box housing 91 is made, and can help like this to reduce the infringement preferably preventing rib of the front end 165.As mentioned above, if drum box housing 91 use resin materials (as, polystyrene) to make, 165, rib of the front end is made up of poly-acetal resin.As mentioned above, the in the situation that of comprising ground floor 195A and second layer 195B in end wall extension portion 195, ground floor 195A can be made up of the material that is same as bulging box housing 91, and second layer 195B is made up of a kind of harder material.

In certain embodiments, the gap between each rib of front end 165, rib of the middle end 164, rib of the rear end 163 can be arranged to improve paper by the guiding of laser printer 1.In an embodiment, any two or more rib of the front end 165, rib of the middle end 164, rib of the rear end 163 can have the gap of basic identical size between corresponding adjacent rib.Further, in certain embodiments, any two or more rib of the front end 165, rib of the middle end 164, rib of the rear end 163 can have the gap of different size between corresponding adjacent rib.In certain embodiments, rib of the front end 165, rib of the middle end 164 can be aimed at length direction.

When developer box protrude 79 with pressurization part 149 attached/separate and contribute to ensure at developer box 28 and bulging box 27 when attached when contacting between developer roll 32 and photosensitive drums 92, developer box 28 and drum box 27 attached and separate during, other parts of bulging box 27 can engage with other parts of developer box 28.

As shown in Figure 17,18,20, the two ends, left and right of development roll shaft 64 are projected into outside the axle guide portion 115 of left and right sidewall 96,97 of bulging box housing 91 on Width.More specifically, in the time that developer box 28 is received within developer box accommodation section 103, the annular component 83 that development roll shaft 64 two ends, left and right arrange is outwards projected into outside the axle guide portion 115 of each left and right sidewall 96,97 of bulging box housing 91 on Width, and the rear side of annular component 83 contacts with the rear end of developer roll axle receptacle 116.

As mentioned above, in the time that developer box 28 is arranged in developer box accommodation section 103, developer roll 32 contacts with photosensitive drums 92.That lower mask body is discussed developer box 28 is attached with drum box 27/process that separates.

A pressurization part 149 is only set in an exemplary embodiment.Multiple pressurization part 149 can be set in certain embodiments.As shown in Figure 21 (a), for developer box 28 being attached on bulging box 27, developer box 28 can be positioned to 103 tops, developer box accommodation section of bulging box 27 so that left developer box protrusion 79 is positioned at the upside of pressurization part 149, and the two ends, left and right of development roll shaft 64 are arranged in the axle guide portion 115 of corresponding bulging box 27.

As shown in Figure 21 (b), in an exemplary embodiment, when developer box 28 is gradually when pressing down, each developer box protrudes 79 and moves down, and left developer box protrudes 79 and slides on the guiding surface 154 of pressing element 151.As a result, pressing means 151 rotates gradually around stationary shaft 157, and the power of the top antagonistic spring 152 of pressing means 151 moves forward like this, and the left and right end of the development roll shaft 64 being supported by corresponding axle guide portion 115 further slides towards developer roll axle receptacle 116.

Next, if Figure 21 (c) is in the time that left developer box protrudes the border between guiding surface 154 and the fixed surface 155 of 79 contact pressing means 149, the left developer box that contacts corresponding contact site 161 protrude 79 continue to move down locking lever 153 the elastic force of resistance elastic component 159 rotate around retainer shaft 160.Control piece 158 is moved down into more close elastic component 159.

Equally, as shown in Figure 21 (c), in the time that developer roll 32 contacts photosensitive drums 92, the annular component 83 that is arranged at development roll shaft 64 left and right ends is received in corresponding developer roll axle receptacle 116 (seeing Figure 17).Border between guiding surface 154 and the fixed surface 155 of left developer box protrusion 79 arrival pressing means 149.

After this,, because the leading section of developer box 28 further reduces, developer box protrudes 79 and passes between pressing means 151 and the contact site 161 of locking lever 153.As shown in Figure 21 (d), be clipped in developer box between the stationary plane 155 of pressing means 151 and an edge of contact site 161 and protrude 79, on the position being " locked " between the stationary plane 155 of locking lever 153 and another edge of contact site 161 before around one jiao of slip of contact site 161.

As shown in Figure 21 (d), left developer box protrudes 79 and is " locked " to behind appropriate location, and control piece 158 again recovers its basic horizontal position and/or substantially aims at upper wall extension 50.In this state, the pressure backward of the pressing means 151 being produced by spring 152 helps developer box 28 to press to bulging box 27, and like this, developer roll 32 is pressed against to photosensitive drums 92.

In this state, because developer box protrusion 79 is positioned corresponding contact portion 161 belows of locking lever 153, thereby so contact site 161 engages developer box protrusion 79 can not be moved up with left developer box protrusion 79, discharge developer box unless locking lever 153 is moved downward and protrude 79.

Known from the state shown in Figure 21 (d), in an exemplary embodiment, in order to remove developer box 28 from the developer box accommodation section 103 of drum box 27, the control piece 158 of locking lever 153 can be pressed downward so that developer box is protruded to 79 and discharge from contact site 161 belows.

In the time that locking lever 153 is pressurized, locking lever 153 rotates around retainer shaft 160, and developer box protrudes and 79 is released out, because be positioned at contact site 161 that developer box protrudes 79 tops towards developer box 28 rotation below.Result is in the time that developer box 28 is upwards drawn, and developer box protrudes 79 and freely moves up between the contact site 161 of locking lever and pressing element 151 against the pressure backward of spring 152.

After developer box protrusion 79 discharges from pressurization part 149, in the time pulling developer box 28, the two ends of development roll shaft 64 do not occupy corresponding developer roll axle receptacle 116, and developer box 28 can easily shift out from developer box accommodation section 103.

In the time that developer box 28 is attached on bulging box 27 formation processing box 20, the various piece of developer box 28 is connected or aims at the corresponding part of drum box 27.

As shown in Figure 7, the lower wall 40 of developer box housing 29 can be included in the block 341 that the left and right sides arranges.Block 341 is tabular component, upwards substantially vertically outstanding from the rear end of lower wall 40.As shown in Figure 12, each block 341 engages with the block receiver member 244 of drum box 27, and attached with drum box 27 when developer box 28, therefore, in the time that block 341 engages with block female part 244, developer box 28 is prevented from being moved further backward with respect to drum box 27.Each left and right end of developer box 28 arranges a block 341, and each left and right end of drum box 27 arranges a block female part 244.Block 341 can help to stop developer to leak out from developer box 28 equally.

As mentioned above, in the time that developer box 28 is attached on bulging box 27, the each keeper 84 on developer box 28 is positioned on the corresponding teat 118 of bulging box 27.The lower extension 104 of the upper extension 37 of developer box 28 and drum box 27 is aimed at, so that upper extension 37 is arranged on lower extension 104, as shown in figure 13.

Developer box 28 is with respect to the correct location of drum box 27, and more specifically, developer roll 32 can pass through block 341 with respect to the correct location of the photosensitive drums 92 of drum box 27, block female part 244, keeper 84, prodger 118, the synergy of pressurization part 149 and developer box protrusion 79 ensures.

In certain embodiments, as shown in Fig. 7,8,13, on the left side wall 38 of developer box 28, a new product detector 301 can be set.U.S. Patent application No.10/891,142 are described later in detail this detector, and its disclosed subject content is incorporated by reference herein.As shown in figure 13, new product detector 301 can comprise one at Width the outside outstanding engagement lever 302 of basic arcuate socket 303 from gear cap 77.In the time that developer box 28 is a new product, engagement lever 302 is positioned one end (for example front end) of arcuate socket 303, and when developer box 28 is while being used for the first time, engagement lever 302 is surveyed actuator 374 (shown in Figure 25) and shifts to the other end of arcuate socket 303 by the new product of laser printer 1.According to the position of engagement lever 302, it is new or used (have and use historical product) that new product detector 301 can be surveyed developer box 28 thus.

As mentioned above, in the time that a new developer box 28 or handle box 20 are attached in main casing 2, engagement lever 302 (seeing Figure 13) the contact new product that is arranged at the new product detector 301 on developer box 28 is surveyed the bottom of actuator 374, and the bottom that makes new product survey actuator 374 is touched lever 302 and presses backward.As a result, new product is surveyed actuator 374 and is rotated counterclockwise, and the rotation based on new product detection actuator 374 simultaneously determines that developer box 28 is new products.

On the other hand, because the engagement lever 30 of the new product detector 301 of developer box 28 is moved on to the other end from one end of arcuate socket 303, in the time that a used developer box 28 is attached to main casing 2, engagement lever 302 is outwards outstanding from arcuate socket 303, and the engagement lever 302 of used developer box 28 is surveyed actuator 474 with new product and do not contacted.Like this, new product detection actuator does not rotate.Based on above operation, can determine that attached developer box 28 is used products.

In the time that handle box 20 is arranged in main casing 2, the toner of drum box 27 is surveyed opening 101, and toner detecting window 85 and the developer of developer box 28 be low/and at least one part of empty sensor 371 aims at along Width.In addition, the bottom of registration rollers pressing means 372 contacts the left end of the upper registration rollers 14 that processed box 20 supporting, and the left part of upper registration rollers 14 by registration rollers pressing means 372 to pressing down.

In certain embodiments, when developer box 28 is attached to while forming handle box 20 on bulging box 27, the gear mechanism 45 of developer box 28 occupies the space between pressurization part 149 and photosensitive drums 92 at least partly.

Next the left side of the handle box 20 forming in the time that developer box 28 is attached to bulging box 27 is more specifically described.As shown in Figure 17, clean electrode 148, gate electrode 132, line electrode 131, and transfer printing electrode 137 is arranged on the left side wall 96 of bulging box housing 91.As shown in Figure 12, ground-electrode 127 can be arranged to stretch out from left side wall 96.

On the left side wall 38 of developer box housing 29, can be provided with developer roll electrode 76 so that it stretches out from developer box housing 29.In the time that developer box 28 is attached on bulging box 27, developer roll electrode 76 extends outwardly into outside the left side wall 96 of bulging box housing 91.Like this, in the embodiment of handle box 20, all electrodes (i.e. clean electrode 148, gate electrode 132, line electrode 131, ground-electrode 127, transfer printing electrode 137, developer roll electrode 76) are all positioned at the left side of handle box 20.

As mentioned above, in an exemplary embodiment, gear mechanism 45 is arranged on the left side wall 38 of developer box housing 29 equally, like this gear mechanism 45 be positioned developer box housing 29 with above-mentioned electrode (clean electrode 148, gate electrode 132, line electrode 131, ground-electrode 127, transfer printing electrode 137 and developer roll electrode 76) in an identical side.

More specifically, in certain embodiments, above-mentioned electrode and gear mechanism 45 are respectively towards the rear side of left side wall 96 of drum box housing 91 and the rear side setting of the left side wall 38 of developer box housing 29.

Like this, in an exemplary embodiment, above-mentioned electrode and gear mechanism 45 are not separately positioned on the front side wall portion 106L and the 107L of wall extension portion of left side wall 96 of bulging box housing 91, and on the left side wall extension 52 of the upper extension 37 of developer box housing 29.

For example, in the embodiment of handle box 20, all above-mentioned electrodes be all be alongst arranged on handle box 20 center (seeing the some C of Figure 17) after.More specifically, in certain embodiments, input gear 68 is arranged on along the left side of handle box 20 with respect to above-mentioned electrode 148,132,131,127,137,76 foremost.

In an exemplary embodiment, in all above-mentioned electrodes (i.e. clean electrode 148, gate electrode 132, line electrode 131, ground-electrode 127, transfer printing electrode 137 and developer roll electrode 76), clean electrode 148 is to be arranged in rearmost electrode.

More particularly, in embodiment more as above, clean electrode 148 is arranged on the 6th wall 113 and on Width, is the electrode of inner side in all above-mentioned electrodes, because gate electrode 132 and line electrode 131 are arranged on wall 111, transfer printing electrode 137 is arranged on the second wall, and ground-electrode 127 and developer roll axial electrode 76 stretch out from the first wall 108L.Thus, in certain embodiments, clean electrode 148 be in all above-mentioned electrodes rear side and inside electrode.

As shown in Figure 14, in an exemplary embodiment, clean electrode 148 is arranged in more the inside along Width than gear mechanism 45.In an embodiment, clean electrode 148 is positioned on handle box 20 outside imaging region X along Width, and in imaging region X, image that will imaging is formed on the paper 3 passing through between photosensitive drums 92 and transfer roll 94.

To the relative position of above-mentioned electrode on the Width of described handle box 20 be described below.As shown in figure 14, developer roll electrode 76 and ground-electrode 127 are outwards projected into the first wall 108L of bulging box 27 along Width, outside 108R.As mentioned above, the 5th wall 112 extend internally from the first wall 108L top and with line electrode 131 be set be connected with the wall 111 of gate electrode 132.Like this, in an exemplary embodiment, line electrode 131 and gate electrode 132 are than developer roll electrode 76 and ground-electrode 127 more inside.

Transfer printing electrode 137 be arranged on the second wall 109L upper at Width than developer roll electrode 76, ground-electrode 127, line electrode 131 and gate electrode 132 be the inside more.As mentioned above, the 3rd wall 110L extending more inwards than the 5th wall 111 from the bottom of the first wall 108L be arranged on wall 111 the right the second wall 109L be connected.

Clean electrode 148 is arranged on the 6th wall 113 at Width than developer roll electrode 76, ground-electrode 127, line electrode 131, and gate electrode 132 and transfer printing electrode 137 be the inside more.As mentioned above, the 7th wall 114 further extends inwards from wall 111 and the second wall 109L, and wall 111 and the second wall 109L are connected to the 6th wall 113.

Like this, in an exemplary embodiment, clean electrode 148, transfer printing electrode 137, line electrode 131, lattice utmost point gate electrode 132, ground-electrode 127 and developer roll electrode 76 are arranged on above bulging box housing 91 left side walls 96 or near it from right to left continuously.In an embodiment, electrode 148,137,131,132,127 and 76 also can be arranged on bulging box housing 91 different point along its length.

The following describes can attached/demounting process cartridge 20 and main casing 2 between each feature of relation.As mentioned above, handle box 20 is can be with main casing 2 attached or remove, as shown in Figure 2.As shown in Figure 1, in the time that handle box 20 is attached to main casing 2, drum box protrudes 150 and engages with the keeper 166 being arranged on main casing 2.Keeper 166 helps handle box 20 to be positioned in main casing 2, and when the power of therefore being rotated generation when the rear end of handle box 20 by photosensitive drums 92 and developer roll 32 upwards pushes away, the front end of handle box 20 does not move down.Like this, align member 166 assists in ensuring that handle box 20 is correctly arranged in main casing 2.In imaging process, in the time that external force may promote handle box 20 and removes from its setting position, keeper 166 also can help handle box 20 to stay on inner its attachment locations of main casing 2.

As shown in figure 24, main casing 2 can comprise the left frame 167 that is positioned at 6 left sides, attached dress/dismounting chamber.The inner face offside (facing a side in attached/dismounting chamber 6) of left frame 167 can comprise clean electrode connecting portion 168, gate electrode connecting portion 169, line electrode connecting portion 170, ground-electrode connecting portion 171, transfer printing electrode connecting portion 172, developer roll electrode connecting portion 173.Clean electrode connecting portion 168, gate electrode connecting portion 169, line electrode connecting portion 170, ground-electrode connecting portion 171, transfer printing electrode connecting portion 172, developer roll electrode connecting portion 173 is all for example, by being wired on the power supply that is arranged on main casing 2 inside (high-voltage power supply) of not describing of not describing.

Electrode connecting portion 168,169,170,171,172 and 173 are arranged on the inner face offside of left frame 167, therefore, after handle box 20 is attached on main casing 2, clean electrode connecting portion 168, gate electrode connecting portion 169, line electrode connecting portion 170, ground-electrode connecting portion 171, transfer printing electrode connecting portion 172, developer roll electrode connecting portion 173 is facing respectively clean electrode 148, gate electrode 132, and line electrode 131, ground-electrode 127, transfer printing electrode 137 and developer roll electrode 76 also contact with it.

Each electrode connecting portion 168,169,170,171,172 and 173 helps to provide electric power to arrive respective electrode 148,132, and 131,127,137 and 76 or by electrode grounding.

Clean electrode connecting portion 168 can be connected by electrical wiring to power supply.Clean electrode connecting portion 168 is as the tie point that applies clean bias voltage to clean electrode 148.Described clean bias voltage can be set in about 400 volts.

Gate electrode connecting portion 169 is connected by electrical wiring to power supply.Gate electrode connecting portion 169 is as the tie point that applies grid voltage to grid 132.Described grid voltage can be set in about 900 volts.

Line electrode connecting portion 170 is connected by electrical wiring to power supply.Line electrode connecting portion 170 is as the tie point that applies sparking voltage to line electrode 131.Described sparking voltage can be set in about 7000 volts.

Ground-electrode connecting portion 171 is connected by electrical wiring to power supply.171 conducts of ground-electrode connecting portion are by the tie point of ground-electrode 127 ground connection.

Transfer printing electrode connecting portion 172 is connected by electrical wiring to power supply.Transfer printing electrode connecting portion 172 is as the tie point that applies transfer bias to transfer printing electrode 137.Described transfer bias can be set as the positive transfer bias of volt left and right, maximum-6500, or the reverse transfer bias of maximum about 1600 volts.

Developer roll electrode connecting portion 173 and developer roll shaft coupling piece 175 above and are hereinafter described connected by electrical wiring to power supply.Developer roll electrode connecting portion 173 is as the tie point that applies development bias voltage to developer roll electrode 173.Described development bias voltage can be set in about 400 volts.

Figure 25 is the side view of the inside surface of the left frame 167 of laser printer 1.Figure 26 is the side view of the inside surface of the correct frame 281 of laser printer 1.Figure 27 (a) and 27 (b) have shown respectively advanced state and the retracted mode of the connecting elements 73 that can be adopted by laser printer 1.

As shown in figure 25, on the inside surface of the left frame 167 in main casing 2, (face the surface in attached/dismounting chamber 6) and be provided with line electrode contact site 271, transfer printing electrode contact portion 272, developer roll electrode contact portion 273, gate electrode contact site 274, clean electrode contact portion 275, and ground-electrode contact site 276.In the time that drum box 27 or handle box 20 are attached on main casing 2, line electrode contact site 271, transfer printing electrode contact portion 272, developer roll electrode contact portion 273, gate electrode contact site 274, clean electrode contact portion 275, ground-electrode contact site 276 osculatory electrodes 131, transfer printing electrode 137 respectively, developer roll electrode 76, gate electrode 132, clean electrode 148, ground-electrode 127.

Line electrode contact site 271 can be the expose portion (shown in Figure 24) of the wire that connects together with line electrode connecting portion 170.Line electrode contact site 271 can be basic U font.At least the base portion of U font line electrode contact site 271 is exposed and is connected with line electrode 131 in the time that handle box 20 is attached on main casing 2.Two arms of U font line electrode contact site 271 are connected to line electrode connecting portion 170, and are connected to by the wiring not showing the power supply (for example high-voltage power supply) not showing that is arranged on main casing 2 inside.The base portion of U font line electrode contact site 271 can extend along diagonal line in the longitudinal direction, as shown in figure 25.

Transfer printing electrode contact portion 272 can be the expose portion (shown in Figure 24) of the wire that connects together with transfer printing electrode connecting portion 172.Transfer printing electrode contact portion 272 can be basic U font.At least the base portion of U font transfer printing electrode contact portion 272 is exposed and is connected with transfer printing electrode 137 in the time that handle box is attached on main casing 2.Two arms of U font transfer printing electrode contact portion 272 are connected to transfer printing electrode connecting portion 172, and are connected to by the wiring not showing the power supply (for example high-voltage power supply) not showing that is arranged on main casing 2 inside.As shown in figure 25, transfer printing electrode contact portion 272 can be positioned at line electrode contact site 271 belows, and the base portion of U font transfer printing electrode contact portion 272 can essentially horizontally extend in the longitudinal direction.

Developer roll electrode contact portion 273 can be the expose portion (shown in Figure 24) of the wire that connects together with developer roll electrode connecting portion 173.Developer roll electrode contact portion 273 can be substantially reverse wide U font of dehiscing.As shown in figure 25, in an exemplary embodiment, the base portion of reverse wide U font developer roll electrode contact portion 273 of dehiscing is exposed with arm and is connected with developer roll electrode 76.The bottom of two arms of reverse U font developer roll electrode contact portion 273 can be connected to developer roll electrode connecting portion 173, and is connected to by the wiring not showing the power supply (for example high-voltage power supply) not showing that is arranged on main casing 2 inside.As shown in figure 25, developer roll electrode contact portion 273 can be positioned at before line electrode contact site 271 and transfer printing electrode contact portion 272, and developer roll electrode contact portion 273 also can be positioned at transfer printing electrode contact portion 272 tops and line electrode contact site 271 belows.

Gate electrode contact site 274 can be the expose portion (shown in Figure 24) of the wire that connects together with gate electrode connecting portion 169.Gate electrode contact site 274 can be basic U font.At least the base portion of U font gate electrode contact site 274 is exposed and is connected with gate electrode 132.Two arms of U font gate electrode contact site 274 are connected to gate electrode connecting portion 169, and are connected to by the wiring not showing the power supply (for example high-voltage power supply) not showing that is arranged on main casing 2 inside.As shown in figure 25, gate electrode contact site 274 can be positioned at after line electrode contact site 271 and transfer printing electrode contact portion 272, and gate electrode contact site 274 can be positioned at transfer printing electrode contact portion 272 tops or line electrode contact site 271 belows.Gate electrode contact site 274 can be positioned to than close transfer printing electrode contact portion 272 more near line electrode contact sites 271.The base portion of U font gate electrode contact site 274 can extend along diagonal line in the longitudinal direction, as shown in figure 25.

Clean electrode contact portion 275 can be the expose portion (shown in Figure 24) of the wire that connects together with clean electrode connecting portion 169.Cleaning electrode contact portion 275 can be basic U font.At least the base portion of the clean electrode contact of U font portion 275 is exposed and is connected with clean electrode 132.Two arms of the clean electrode contact of U font portion 275 are connected to clean electrode connecting portion 169, and are connected to by the wiring not showing the power supply (for example high-voltage power supply) not showing that is arranged on main casing 2 inside.As shown in figure 25, cleaning electrode contact portion 275 can be positioned at after line electrode contact site 271 and transfer printing electrode contact portion 272.Clean electrode contact portion 275 and can be positioned at transfer printing electrode contact portion 272 tops or line electrode contact site 271 belows.Cleaning electrode contact portion 275 can be positioned to than close line electrode contact site 271 more near transfer printing electrode contact portion 272.The base portion of the clean electrode contact of U font portion 275 can extend along diagonal line in the longitudinal direction, as shown in figure 25.

As shown in figure 25, the ground-electrode contact site 276 that ground-electrode 127 is in contact with it after handle box 20 is attached on main casing 2 can be arranged on the inside surface of left frame 167.Ground-electrode contact site 276 can form by wire is curved to fundamental triangle, as shown in figure 25.

Ground-electrode contact site 276 can comprise one upwards crimping ground electrode contact site 276 so that its pressing element (not shown) such as spring engaging with ground-electrode receptacle 323 (telling about below).In an exemplary embodiment, ground-electrode contact site 276 is by ground-electrode connecting portion 171 and left frame 167 link together (being shown in Figure 24).

Ground-electrode contact site 276 can be positioned at transfer printing electrode contact portion 272 tops or line electrode contact site 271 belows.Ground-electrode contact site 276 is connected to ground-electrode connecting portion 171 by the electric wire that forms ground-electrode contact site 276, and be arranged on the power supply (for example earthing power supply) of main casing 2 inside or the metal part of main casing 2 by being wired to of not describing.

Left frame 167 can also support other part or members of contacting with the corresponding part of drum box 27, developer box 28 and/or handle box 20.

For example, be arranged on movably the top, front side of developer roll electrode contact portion 273 on left frame 167 inside surfaces for inputting the connecting elements 73 of the driving force that drives input gear 28, and aim in the longitudinal direction with line electrode contact site 271.

On the inside surface of left frame 167, be provided with a drum gear 321, in the time that drum box 27 and/or handle box 20 are attached on main casing 2, drum gear 321 is meshed with the photosensitive drum driving gear 191 (seeing Figure 37 and 38) of bulging box 27 and/or handle box 20.Drum gear 321 can be arranged on after transfer printing electrode contact portion 272 and ground-electrode contact site 276, or gate electrode contact site 274 belows.

Also have, at the inside surface of left frame 167, for detection packet be contained in the developer with dummy status of the toner in the developer containing part 30 of developer box 28 low/empty sensor 371 can be positioned at before developer roll electrode contact portion 273, thereby in the time that handle box 20 is attached in main casing 2, developer is low/and empty sensor 371 aims at the toner detecting window 101 being formed on the left and right sidewall 96,97 of bulging box housing 91 at Width.Developer is low/and empty sensor 371 can comprise a photocell being arranged on one of left frame 167 or correct frame 281, and a light receiving element arranging on another of left frame 167 or correct frame 281.

In addition, developer low/empty sensor 371 is provided with registration rollers pressing element 372 above.In the time that handle box is attached on main casing 2, registration rollers pressing means 372 presses the left end of registration rollers 14 downwards.Registration rollers pressing means 372 can be formed by the torque spring being supported by axle 372.Registration rollers pressing element 372 can be inwardly outstanding from left frame 167 along Width.

As shown in Figure 25, registration rollers pressing means 372 can be arranged to one end and upwards extend towards the front side of laser printer 1 along electrode guiding surface 322 (having description below) diagonal line, its other end towards the downward diagonal line in front side of laser printer 1 extend.

In addition, survey actuator 374 left sides or right side from new product and observe, the new product of V-shape survey actuator 374 be positioned at developer low/empty sensor 371 and registration rollers pressing means 372 tops and between the two.New product is surveyed actuator 374 and is rotatably supported from the axle 375 of left frame 167 inwardly projectings along Width.The end portion of new product detection actuator 374 can constantly be pushed by spring (without diagram) front side of laser printer 1 to.

In certain embodiments, left frame 167 can comprise electrode guiding surface 322.At handle box 20, during attached and dismounting, set electrode guiding surface 322 helps guiding ground-electrode 127 and developer roll electrodes 76.Electrode guiding surface 322 alongst extends to ground-electrode receptacle 323 from main casing 2 front portions.Ground-electrode receptacle 322 can be arranged near ground-electrode contact site 276.

In the time that handle box 20 is attached in main casing 2, ground-electrode 127 and developer roll electrode 76 slide along the surface of electrode guiding surface 322, until ground-electrode 127 is engaged by ground-electrode receptacle 323.Ground-electrode receptacle 323 can be a slotted section that is U-shaped, is configured to the opening surface of ground-electrode receptacle 323 of U font to the front portion of laser printer 1.

Electrode guiding surface 322 can be arranged to the surface of an inclination, therefore, the front portion of electrode guiding surface 322 than the rear portion of electrode guiding surface 322 that ground-electrode receptacle 323 is set more near the top of laser printer 1.In addition, electrode guiding surface 322 is formed and crosses developer roll electrode contact portion 273 and ground-electrode contact site 276 extends.As shown in Figure 25, developer roll electrode contact portion 273 and ground-electrode contact site 276 are configured to project upwards from electrode guiding surface 322.

In the time that handle box 20 is attached on main casing 2, ground-electrode 127 is directed into electrode guiding surface 322, receives until it is grounded electrode receptacle 323.Before arriving ground-electrode receptacle 323, ground-electrode connecting portion 171 is to pressing down the developer roll electrode contact portion 273 projecting upwards from electrode guiding surface 322 so that it walks around ground-electrode contact site 273.Then ground-electrode connecting portion 171 is towards the downward crimping ground electrode contact site 276 of electrode guiding surface 322.

In the time that ground-electrode 127 is grounded electrode receptacle 323 and receives, the pressing means (as spring) that ground-electrode 127 and/or ground-electrode connecting portion 171 are grounded electrode contact portion 276 upwards presses to the rear portion of ground-electrode receptacle 323.As a result, prevented that ground-electrode 127 and/or ground-electrode connecting portion 171 and ground-electrode receptacle 323 from separating, ground-electrode contact site 276 can correctly be connected with ground-electrode 127 and/or ground-electrode connecting portion 171.

Further, developer roll electrode 76 is guided along electrode guiding surface 322, by pressing down developer roll electrode contact portion 273 so that developer roll electrode 76 is walked around developer roll electrode contact portion 273.In the time that handle box 20 is attached on main casing 2 for example, when (ground-electrode 127 and/or ground-electrode connecting portion 171 are grounded electrode receptacle 323 and receive), developer roll electrode contact portion 273 contacts with the lower front portion of developer roll electrode 76, and the pressure that developer roll electrode 76 and/or developer roll electrode connecting portion 173 are developed roller electrode contact portion 273 is upwards pressed towards upper rear side diagonal line ground.

By developer roll electrode contact portion 273 is set, developer roll electrode contact portion 273 is contacted with developer roll electrode 76 and/or developer roll electrode connecting portion 173 from lower front portion, in the time that handle box 20 is attached in main casing 2, the interval between developer roll electrode contact portion 273 and line electrode contact site 271 increases.In other words,, if developer roll electrode contact portion 273 contacts the top of developer roll electrode 76 and/or developer roll electrode connecting portion 173, between developer roll electrode contact portion 273 and line electrode contact site 271, there is so a less interval.Like this, by arranging from the developer roll electrode contact portion 273 of lower anterior contact developer roll electrode 76 and/or developer roll electrode connecting portion 173, can improve the efficiency and the accuracy that conduct electricity to developer roll electrode 76 from developer roll electrode contact portion 273.

Still, with reference to the left frame 167 shown in Figure 25, lever actuated power transmission gear 277 is rotatably supported by left frame 167 so that the front following side of lever actuated power transmission gear 277 is exposed.In the time that paper provides dish 9 to be attached on main casing 2, being arranged on paper provides the input gear (not shown) on dish 9 to engage with lever actuated power transmission gear 277.In the time providing driving force from lever actuated power transmission gear 277 to input gear 68, as mentioned above, the driving force rotation that lever 17 (Fig. 1) is just provided, the leading section of platen member 15 is just upwards promoted by lever 17.Transmit gear 277 by lever actuated power and provide driving force to input gear 68, lever actuated power is transmitted gear 277 and is made paper provide dish 9 to be prevented from separating (describing below) from main casing 2 with the joint of dish locking piece 283.

Figure 26 is the side view of the inner surface of the correct frame 281 of laser printer 1.In the time that handle box 20 is attached in main casing 2, the inside surface of correct frame 281 is towards the right side of handle box 20.Axle guiding surface 361 and drum axle receptacle 362 can be set on the inside surface of correct frame 281.Axle guiding surface 361 at handle box 20 and main casing 2 attached and separate during the right part of the bulging axle 125 of guiding and development roll shaft 64.In the time that drum box 27 and/or handle box 20 are attached in main casing 2, the right part that drum axle receptacle 362 is received drum axles 125.In certain embodiments, the right-hand member of drum axle 125 also can be grounded, and the left and right end that therefore rouses axle 125 has the function of ground-electrode 127.

Axle guiding surface 361 and drum axle receptacle 362 can be formed the ground-electrode receptacle 323 of facing symmetrically respectively electrode guide surface 322 and left frame.That is to say, axle guiding surface 361 is formed has an inclined surface, and the front portion of axle guiding surface 361 can be arranged to than the top of the close more close laser printer 1 in axle guide surface 361 rear portions that bulging axle receptacle 362 is set.

In the time that handle box 20 is attached in main casing 2, the right-hand member of drum axle 125 right-hand members and developer roll electrode 76 slides along the surface of axle guiding surface 361, until drum axle 125 is engaged by drum axle receptacle 362.Drum axle receptacle 362 can be a slotted section that is U font, is configured to the opening surface of bulging axle receptacle 362 of U font to the front portion of laser printer 1.

In the time that handle box 20 is installed on main casing 2, ground-electrode 127 (being annular component 83) and left developer roll electrode 76 (left part of the roll shaft 64 that develops) are guided by the electrode guiding surface 322 of left frame 167, and the drum right-hand member of axle 125 and the right-hand member of development roll shaft 64 are guided by the axle guiding surface 361 of correct frame 281.Roused axle receptacle 362 and received when ground-electrode 127 is grounded the right part of rousing axle 125 that electrode receptacle 323 receives substantially simultaneously.

In addition, on the inside surface of correct frame 281, can arrange developer low/another in photocell and the light receiving element of empty sensor 371, in photocell and light receiving element one is arranged on correct frame 281 like this, and another is arranged in left frame 137.In the time that handle box 20 is attached in main casing 2, the toner of drum box 27 is surveyed opening 101, the toner detecting window 85 of developer box and be arranged at developer on correct frame 281 low/light receiving element or the photocell of empty sensor 371 aim at along Width.

Registration rollers pressing element 381 can be positioned on the front side of low/empty acquisition sensor 371 of the developer being arranged on correct frame 281.In the time that handle box 20 is attached on main casing 2, registration rollers pressing means 381 just presses the right-hand member of registration rollers 14 downwards.Registration rollers pressing element 381 can be formed by the torque spring being supported by axle 382.Registration rollers pressing element 381 can be inwardly outstanding along Width clump correct frame 281.As shown in figure 25, set registration rollers pressing means 381 can make the front side of one end along electrode guiding surface 361 towards laser printer 1 upwards extend diagonal line, and the other end towards the downward diagonal line in front side of laser printer 1 extend.

Under the state that handle box 20 is mounted, toner detection window 101 and developer on drum box housing 91 right side walls 97 be low/empty sensor 371 on Width toward each other.In addition, the bottom of registration rollers pressing means 381 contacts the right-hand member of the upper registration rollers 14 being supported by handle box 20, and presses the right-hand member of registration rollers 14 downwards.

Further, on the inside surface of correct frame 281, can form one in the front bottom of correct frame 281 along Width from outside (to the right) the outstanding recess 282 of correct frame 281.In recess 282, be provided with a dish locking component 283 using the locking mechanism as preventing that paper from providing dish 9 (seeing Fig. 1) to separate.

Dish locking component 283 can alongst extend, and comprises a bend arm 284, and when bend arm 284 is bending, the rearward end of bend arm 284 is directed to laser printer 1 inside (deriving from recess 282).A contact area 285 is arranged at the rearward end of bend arm 284, and the leading section of bend arm 284 be rotatably attached at be arranged in recess 282 along thickness direction extend axle 286 on.In addition, a spring (without diagram) is connected with bend arm 284, and contact area 285 is constantly pushed to the inside of laser printer 1 and the outside of recess 282 by the pressure of spring like this.

In the time that paper provides dish 9 to be arranged in main casing 2, the contact area 285 of outstanding locking component junction surface, dish 9 right sides (without diagram) contact disc locking piece 283 is provided from paper, the power that dish locking piece 283 antagonistic springs (without diagram) produce is pressed into contact area 285 in recess 282, and locking component junction surface can be through recess 282 and dish locking piece 283 like this.

In the time of the process contact area 285 of locking component junction surface, the power that spring produces makes to coil locking piece 283 and restores, and makes contact area 285 outwards give prominence to and provide the locking component junction surface of dish 9 to engage with paper from recess 282.As a result, can prevent that paper from providing dish 9 not wish that spot departs from main casing 2.

In addition, pressurization earthing contact 287 can be set on the inside surface of correct frame 281.When paper provides dish 9 while being attached in main casing 2, pressurization earthing contact 287 fits within and is formed at paper the grounding connection opening in dish 9 right lateral surface (without diagram) is provided.

In addition,, on correct frame 281, fan 288 can be positioned at along Width the basic centre of correct frame 281.Fan 288 can help as laser printer 1 internal cooling, and offsets the heat that handle box 20 and photographic fixing portion 21 produce.Fan 288 can be positioned to be exposed to the inside and outside of correct frame 281.

Figure 27 (a) and (b) described another embodiment of connecting elements 73, and explain propelling/retraction operation, (a) show the advanced state of connecting elements 73, and (b) shown the retracted mode of connecting elements 73.

Connecting elements 73 advances and is connected with the connecting hole 74 of input gear 68, retracts and separates (seeing Fig. 8) with the connecting hole 74 of input gear 68.The arm 291 of propelling and retraction connecting elements 73 is arranged in left frame 167.Arm 291 comprises the first arm 292 alongst extending and the second arm 293 that is arranged at the first arm 292 rearward end.

The second arm 293 comprises a slotted hole alongst extending, and connecting elements 73 can insert this slotted hole.As shown in Figure 27 (a)-(b), the rearward end of the second arm 293 has the sidewall that is thicker than its fore-end.The rearward end of the second arm 293 corresponding to the leading section of retraction portion 294, the second arms 293 of connecting elements 73 corresponding to promotion part 295.

Arm 291 is supported by left frame 167 movably, and therefore arm 291 can alongst move.When connecting elements 73 is pushed into portion 294 in the time that the rear end part of arm 291 engages, arm 291 can move backward.Arm 291 can be arranged to along with the opening and closing of protecgulum 7 are alongst moved.

In the time that handle box 20 is attached in main casing 2, connecting elements 73 can be oriented to cross from the connecting hole 74 of input gear 68.Rotary driving force can input in connecting elements 73 by the motor (without diagram) from main casing 2.A pressing means such as spring (without diagram) can constantly inwardly be pressed connecting elements 73 along Width (towards attached/dismounting chamber 6).

Handle box 20 and main casing 2 attached and separate during, in the time that protecgulum 7 is opened, arm 291 is along with the side shifting forward of opening of protecgulum 7.During this, as shown in Figure 27 (b), the retraction portion 294 of the second arm 293 engages connecting elements 73, as shown in Figure 27 (b).Therefore, connecting elements 73 resist pressing means produce power retract from the connecting hole 74 of input gear 68.

After handle box 20 is attached in main casing 2, in the time that protecgulum 7 closes, arm 291 moves backwards.In the meantime, as shown in Figure 27 (a), promotion part 295 engages connecting elements 73.Therefore, if handle box 20 is attached in main casing 2, what connecting elements 73 produced by pressing means tries hard to recommend in the connecting hole 74 that enters input gear 68, and connecting elements 73 is non-rotatably connected on input gear 68.As a result, in the time that driving force is sent to input gear 68 from connecting elements 73, developer provides roller 31, and developer roll 32 and stirrer 46 rotate by the driving force that is delivered to input gear 68.

As shown in Figure 24, the connecting elements 73 that is connected to the connecting hole 74 of input gear 68 in the time that handle box 20 is attached in main casing 2 can be arranged in left frame 167.Connecting elements 73 can advance and/or retract to be connected with the connecting hole 74 of input gear 68 along Width.Connecting elements 73 can be arranged on a travelling arm 174.As shown in Figure 28 (a)-(b), connecting elements 73 can according to travelling arm 174 with respect to the position control of main casing 2 between retracted mode and advanced state.

For example, developer roll contact element 175 also can be arranged on travelling arm 174.According to the position of travelling arm 174, developer roll contact element 175 contacts or leaves developer roll electrode 76.

As shown in Figure 28 (a)-(b), travelling arm 174 comprises the first arm 176 and the second arm 177 that alongst extend.In an exemplary embodiment, the second arm 177 integrated connections are in the rear end of the first arm 176.The first arm 176 is basically perpendicular to the second arm 177.The slotted hole or the groove that extend along above-below direction can be set on the second arm 177.Connecting elements 73 can insert in the slotted hole or groove of the second arm 177.Slotted hole or groove make connecting elements 73 shift to the other end from one end of the second arm 177.Slotted hole or groove comprise a retraction portion 178 and a promotion part 179.In an exemplary embodiment, thicker than promotion part 179 on retraction portion 178 Widths.Like this, retraction portion 178 can hide connecting elements 73 at least a portion, as shown in Figure 29 (a).In the time that the retraction portion 178 of the second arm 177 of travelling arm 174 engages with connecting elements 73, as shown in Figure 29 (a), connecting elements 73 is pulled out along Width, away from attached/dismounting chamber 6, makes connecting elements 73 in retracted mode.

As shown in Figure 29 (b), in the time that the promotion part 179 of the second arm 177 of travelling arm 174 engages with connecting elements 73, connecting elements 73 is inwardly promoted towards attached/dismounting chamber 6 along Width, makes connecting elements 73 in advanced state.

As shown in Figure 29 (a)-(b), connecting elements 73 can remain in advanced state and retracted mode by the outside surface based on the second arm 177, and the second arm 177 is outwards outstanding, and on Width, 178 places of retraction portion are thicker.

In an exemplary embodiment, in the time that handle box 20 is attached in main casing 2, connecting elements 73 is oriented to the connecting hole 74 of the input gear 68 along Width towards developer box 28.Can be provided to by connecting elements 73 input gear 68 of developer box 28 from the rotary driving force that is arranged at the motor (without diagram) in main casing 2.And in an exemplary embodiment, connecting elements 73 always inwardly promotes towards attached/dismounting chamber 6 by spring 181 (seeing Figure 24).

In the time that travelling arm 174 moves or rotates, the slotted hole engaging with connecting elements 73 on the second arm 177 or the part of groove change.According to the second arm 177 be aligned part be promotion part 179 or retraction portion 178, connecting elements 73 is separately positioned on advanced state or retracted mode.In the time that the retraction portion 178 of the second arm 177 engages with connecting elements 73, the propelling power of connecting elements 73 antagonistic springs 181 is pulled out along Width, and passes through the second arm 177 outside surfaces away from attached/dismounting chamber 6.

As mentioned above, developer roll web member 175 also can be arranged on sliding wall 174.As Figure 28 (a) with (b), developer roll web member 175 can be arranged on one end of the promotion part 179 of the second arm 177.In the time that the retraction portion 178 of the second arm 177 and connecting elements 73 engage, developer roll web member 175 does not contact developer roll electrode 76 and in released state, as shown in Figure 28 (a) and 29 (a).

In an exemplary embodiment, when developer roll web member 175 is during in released state, as shown in Figure 28 (a), developer roll web member 175 separates and is positioned at for example developer roll electrode 76 belows from developer roll electrode 76.In the time that the promotion part 179 of the second arm 177 engages with connecting elements 73, developer roll web member 175 contacts developer roll electrode 76 and in connection status.

Developer roll web member 175 can be the form of cylinder or semicolumn member, and in the time that developer roll web member 175 contacts with the left end of developer roll electrode 76, developer roll web member 175 is at least in part around developer roll electrode 76.

In certain embodiments, developer roll web member 175 can be the protrusion tabular component contacting with developer roll electrode 76 left ends.In an exemplary embodiment, as mentioned above, developer roll web member 175 is connected on the power supply not showing in main casing 2.As shown in figure 28, it is outstanding backward that developer roll web member 175 is provided in the lower end of the second arm 177 of travelling arm 174.

As shown in Figure 28 (a)-(b), the leading section of the first arm 176 of travelling arm 174 can rotatably be supported by left frame 167, so that the second arm 177 of travelling arm 174 can move up and down substantially.When the first arm 176 is in the time that leading section rotates, connecting elements 73 slides along slotted hole or the groove of the second arm 177, thereby connecting elements 73 can be arranged in retraction portion 178 or promotion part 179.

In an exemplary embodiment, the rotation of travelling arm 174 or mobile all based on opening or close protecgulum 7 and realize by travelling arm 174 being linked to connecting link 180 on protecgulum 7.

In the time that protecgulum is opened handle box 20 being installed to main casing 2 or removing in the process of main casing 2, taking leading section as fulcrum, the rear end of the first arm 176 reduces, this process is synchronizeed with opening of protecgulum, as shown in Figure 29 (a), and retraction portion 178 engages with connecting elements 73, as shown in Figure 29 (b).As a result, the power that connecting elements 73 antagonistic springs 181 apply and from the connecting hole 74 of input gear 68 retract.

In the time that handle box 20 is attached on main casing 2, if protecgulum 7 is closed, thereby rise the rear end of the first arm 176 and the variation that makes the state (being retracted mode or advanced state) of connecting elements 73 and the state (being contact condition and non-connection status) of developer roll web member 175 around the front end rotation of the first arm 176 with open the action of closing protecgulum 7 and synchronize, as shown in Figure 28 (a)-(b) He 29 (a)-(b).

As mentioned above, in the time that the promotion part 179 of the second arm 177 engages with connecting elements 73, thereby the connecting hole 74 that connecting elements 73 is advanced into input gear 68 by the expulsive force of spring 181 is non-rotatably attached on input gear 68 connecting elements 73.Under this state, can be passed on input gear 68 from the rotary driving force of connecting elements 73.

In an exemplary embodiment, the result of working as said gear mechanism 45, when driving force is when connecting elements 73 is delivered to input gear 68, also make driving force be provided on stirrer-driven gear 69 by neutral gear 70, thereby stirrer 46 is driven in rotation.

In addition, in the example embodiment under this state, driving force is delivered to developer roll driven wheel 71 and roller driven wheel 72 is provided from input gear 68, thereby makes developer roll 32 and developer provide roller 31 to be driven respectively and rotate.

In this state, as shown in Figure 28 (b) and as mentioned above, developer roll web member 175 is by overlapping with developer roll electrode 76 on Width and contact with developer roll electrode 76.Under this state, in an exemplary embodiment, development bias voltage can be applied to developer roll electrode 76 from power supply by developer roll web member 175.

About photosensitive drums 92, as mentioned above, in an exemplary embodiment, photosensitive drum driving gear 191 exposes from photosensitive drum gear opening 196.In the time that handle box 20 is attached on main casing 2, photosensitive drum driving gear 191 is meshed with the drum gear (not shown) being arranged in main casing 2 by photosensitive drum gear opening 196.Drum gear from motor (not shown) provide rotate photosensitive drums 92 driving force so that photosensitive drums 92 rotate.

Next the narration that the toner of developer box 28 is provided to process is provided.In handle box 20 is attached to main casing 2, and gear mechanism 45 is during by the drive force of motor (not shown), and the toner in the developer containing part 30 of developer box 28 is stirred by stirrer 46.Then toner is provided portion 36 to discharge from developer passage 58 towards developer.

In an exemplary embodiment, being discharged to developer from developer passage 58 provides the toner of portion 36 to provide the rotation of roller 31 to be provided to developer roll 32 by developer.At this moment, toner fills positive electricity by the development bias voltage being applied on developer roll 32.

Be provided to the toner on developer roll 32 surfaces according to moving between the pressing means 67 that is rotated in thickness adjustment member 33 of developer roll 32 and developer roll 32, so that toner remains on the surface of developer roll 32 as the thin layer of basic uniform thickness.

Next explain the process that forms electrostatic image in photosensitive drums 92.Charger 93 produces ground connection electric discharge by applying grid voltage and sparking voltage so that photosensitive drums 92 surface uniforms become positively charged.After becoming positively charged, in the time that photosensitive drums 92 is rotated, exposed by the high-velocity scanning of the laser beam from scanner 19 in the surface of photosensitive drums 92 photosensitive drums 92 surface uniforms.The electrostatic latent image corresponding with the image that will form is formed on the external peripheral surface of photosensitive drums 92.The part by laser beam lithography of photosensitive drums 92 obtains than the lower electromotive force of the photosensitive drums of positively charged 92 unexposed portions.

Thus, in an exemplary embodiment, because photosensitive drums 92 continues rotation, when the toner of positively charged that is maintained at developer roll 32 surfaces due to the rotation of developer roll 32 with photosensitive drums 92 in the face of and while contacting, toner is just provided to the low potential exposed portion of photosensitive drums 92.As a result, the electrostatic latent image in photosensitive drums 92 becomes visible, and the toner image forming by discharged-area development process is maintained on the external peripheral surface of photosensitive drums 92.

After this, in an exemplary embodiment, because photosensitive drums 92 is constantly rotated and facing transfer roll 94, when paper 3 is transmitted by registration rollers 14 and when transfer position by between photosensitive drums 92 and transfer roll 94, by the transfer bias being applied on transfer roll 94, the toner image that remains on photosensitive drums 92 external peripheral surfaces is transferred on paper 3.Then toner image is transferred to paper 3 on it and is passed to photographic fixing described below portion 21.

After toner image is transferred on paper 3, in the time that photosensitive drums 92 continues rotate and facing cleaning brush 95, apply clean bias voltage by cleaning electrode 95 to cleaning brush 95, the cleaned brush 95 of paper dust being attached on the outside surface of photosensitive drums 92 is collected.Image is transferred to the toner of staying photosensitive drums 92 external peripheral surfaces after paper 3 and is developed roller 32 and collects.

In an exemplary embodiment, photographic fixing portion 21 is arranged at after handle box 20, as shown in Figure 1 in main casing.Photographic fixing portion 21 can comprise a photographic fixing framework 182, and this framework holds a warm-up mill 183 and a compressing roller 184.Warm-up mill 184 comprises the pipe that metal material makes and is placed in the lamp of tube interior (as, Halogen lamp LED).The driving force that motor (without diagram) provides can make warm-up mill 183 rotate.

Compressing roller 184 can be positioned to contact from below warm-up mill 183.Compressing roller 184 comprises the roll body that roll shaft that metal material is made and elastomeric material are made.Roll body can cover roll shaft and rotate along with the rotation of warm-up mill 183.

At 21 places of photographic fixing portion, in the time that paper 3 passes through between warm-up mill 183 and compressing roller 184, the toner being transferred on paper 3 in transfer position is heated and fixes.Toner is on paper 3 after photographic fixing, and paper 3 is further delivered on the paper outgoing route 185 of above-below direction extension towards main casing 2 upper surfaces.The paper 3 that is delivered to paper outgoing route 185 can export the paper output panel 187 being formed on main casing 2 upper surfaces to by one group of paper outlet roller 186.As shown in fig. 1, paper outlet roller 186 can be arranged at paper output panel 187 tops, as shown in Figure 1.

Discussion is adopted to each feature of each embodiment of the handle box 20 of one or more aspects of the present invention below.In certain embodiments, the embodiment of example handle box 20 as shown in Figure 17, because all electrodes (as, clean electrode 148, gate electrode 132, line electrode 131, ground-electrode 127, transfer printing electrode 137, and developer roll electrode 76) be all positioned at the side (as left side) of bulging box 27 or handle box 20 along Width, therefore in the size that reduces drum box 27 and/or handle box 20, can simplify the structure of bulging box 27 and/or handle box 20.

In certain embodiments, as shown in Figure 14, at all electrodes (as, clean electrode 148, gate electrode 132, line electrode 131, ground-electrode 127, transfer printing electrode 137, and developer roll electrode 76) in, clean electrode 148 is on Width, to be positioned at backmost and innermost electrode.Result, handle box 20 attached/dismounting during, because clean electrode 148 is rearmost electrodes, therefore clean electrode 148, before aiming at clean electrode contact portion 168 along Width, first passes through other electrodes 132,131,127,137 and 76 electrode connecting portion 169,170,171,172 and 173.

But, because clean electrode 148 can be also innermost electrode on Width, therefore can reduce and preferably prevent clean electrode 148 electrode connecting portion 169,170 of swiping or rub, 171,172,173 and 175.

Be arranged in innermost position in all electrodes 132,131,127,137 and 76 by cleaning electrode 148, between clean electrode 148 and electrode contact portion 169,170,171,172 and 173, have a larger interval.This configuration can help to reduce and preferably prevent due to electrode 148,132,131,127,137 and 76 with electrode connecting portion 168,169,170,171, the friction between 172 and 173, scraping and become flexible the contact fault that produces.

In electrode 148,132,131,127,137 and 76 are arranged in the embodiment of diverse location along Width, can preferably prevent electrode 148 by reducing, 132,131,127,137 and 76 and electrode contact portion 168,169,170,171,172 and 173 drum box 27 and/or handle box 20 attached/dismounting during contingent damage, and increase life-span of drum box 27 and/or handle box 20.

As mentioned above, be arranged in backmost and more innermost embodiment at clean electrode 148 on Width, clean electrode 148 can be positioned at image imaging district X outside, and image imaging district X can be with respect to paper 3 because clean electrode 148 is intercepted.Like this, can stop the contact fault of clean electrode 148, reach accurate image simultaneously and form.

In certain embodiments, if clean electrode 148 is rearmost electrodes, cleaning brush 95 can be positioned at the rear (that is, the transfer position downstream part of the sense of rotation based on photosensitive drums 92, photosensitive drums 92 and transfer roll 94 are face-to-face at this place) of photosensitive drums 92.As a result, cleaning brush 95 can be fixed on the downstream part of image imaging district X.

Adopting in some embodiment aspect one or more of the present invention, as mentioned above, gear mechanism 45 also can be placed in and all electrodes 148,132,131,127,137 and 76 identical sides (as, left side).In these embodiments, in the size that reduces drum box 27 and/or handle box 20, can simplify the structure of bulging box 27 and/or handle box 20.

As mentioned above, gear mechanism 45 can be located towards the front portion of drum box 27 left side walls 96, and all electrodes 148,132,131,127,137 and 76 can be towards the location, rear portion of drum box 27 left side walls 96.So just can simplify and miniaturization drum box 27 and/or handle box 20.

In certain embodiments, all electrodes 148,132,131,127,137 and 76 are positioned at input gear 68 rears of gear mechanism 45.Like this, in the time that driving force provides to input gear 68 by being attached at connecting elements 73 on travelling arm 174, connecting elements 73 and travelling arm 174 can interfere with electrode 148,132,131,127,137 and 76, because connecting elements 73 and travelling arm 174 are arranged on the front of input gear 68.

Like this, just can avoid due to the movement of connecting elements 73 and travelling arm 174 may be to electrode 148,132, and 131,127,137 and 76 injuries that cause, when the stable driving force that drives handle box 20 is provided to handle box 20 by connecting elements 73, can keep electrode 148,132,131,127,137 and 76 in the accurate location of rousing on box 27.

Adopt in the embodiment aspect one or more of the present invention, although all electrodes 148,132 at some, 131,127,137 and 76 and gear mechanism 45 be all positioned at handle box 20 the same side (as, left side), but all electrodes 148,132,131,127,137 and 76 are all positioned the rear side of gear mechanism 45, can reduce thus and preferably prevent electrode 148,132,131, the possibility of 127,137 and 76 greasy dirts that produced by gear mechanism 45 and contamination by dust.

In certain embodiments; by by electrode 148; 132,131,127; the right side that at least a portion in 137 and 76 is positioned at gear mechanism 45 can further prevent electrode 148; 132,131,127; the pollution of at least a portion in 137 and 76, those electrodes can be subject to greasy dirt and the dust that further protection produces away from gear mechanism 45 more like this.For example, in embodiment as above, clean electrode 148 is than other electrodes 132,131,127,137 and 76 are subject to sheltering of the more greasy dirt that gear mechanism 45 is produced and dust, because clean electrode 148 is arranged at all electrodes 148,132,131, inner position in 127,137 and 76.

Adopt in the embodiment aspect one or more of the present invention at some, developer provides opening 47 can be arranged on handle box 20 and electrode 148,132,131,127,137 and 76 present positions (as, left side) a different side (as, right side).In the embodiment described in Figure 10, developer provides on the right side wall 39 that opening 47 is arranged at developer box 28.In such embodiments, can reduce and preferably get rid of electrode 148,132, the possibility of 131,127,137 and 76 developer pollutions that leaked.

In an exemplary embodiment, clean electrode 148, transfer printing electrode 137, line electrode 131, gate electrode 132, ground-electrode 127 and developer roll electrode 76 are arranged on the left side wall 96 of bulging box housing 91 from right to left continuously.In another embodiment, clean electrode 148, transfer printing electrode 137, line electrode 131, gate electrode 132, ground-electrode 127 and developer roll electrode 76 are arranged on the left side wall 96 of bulging box housing 91 from back to front continuously

As shown in Figure 14, due to the 3rd wall 110L, the arrangement mode of the 5th wall 112 and the 7th wall 114, electrode 148,137,131,132,127 and 76 also can be arranged on different points along width and length direction, the 3rd wall 110L, the 5th wall 112 and the 7th wall 114 extend internally along Width, and as connecting electrode 148,137,131,132,127 and 76 each wall 108L disposed thereon, 109L, 111,113 connecting wall.

Electrode 148,137, the distance between 131,132,127 and 76 can help to reduce, preferably prevent electrode 148,137, and the electric leakage between 131,132,127 and 76 or short circuit make handle box 20 miniaturizations simultaneously.For example can reduce by the 5th wall 112 that separates developer roll electrode 76 and line electrode 131 on Width the electric leakage or the short circuit that preferably prevent between developer roll electrode 76 and line electrode 131.

In the embodiment of some handle boxes 20, embodiment as shown in Figure 23 (b), transfer printing electrode 137 is included on Width outwards outstanding and when electrode maintaining part 138 engages, be transferred when fitting piece 139 is transferred the teat 140 that electrode opening 142 is received.As shown in Figure 23 (b)-(c), in an exemplary embodiment, by fitting piece 139 is inserted into the transfer printing electrode receptacle 143 of bulging box housing 91 from the outside of drum box housing 91, make fitting piece 139 be arranged to basic vertical with the 3rd wall 110L and transfer printing electrode 137 is attached on bulging box housing 91.

More particularly, in certain embodiments, for example, in the embodiment as shown in Figure 23 (c), fitting piece 139 first engages by one end of fitting piece 149 and the ratchet portion 147 of each engage ribs 145 with the receiving of transfer printing electrode receptacle 143, then around teat 140 rotary engaging members 139, the other end of fitting piece 139 and the ratchet portion 147 of other engage ribs 145 is engaged.Result transfer printing electrode 137 can easily and accurately be positioned in bulging box housing 91.Equally, the fitting piece 139 that comprises teat 140 and electrode contact portion 141 is prevented from rotation by engage ribs 145 and ratchet portion 147.

As shown in Figure 23 (a), in the time that transfer printing electrode 137 is arranged in bulging box housing 91, the left end of transfer printing roll shaft 133 contacts with the electrode contact portion 141 of transfer printing electrode 137.In an exemplary embodiment, be provided with transfer roll driven wheel 135 in drum box housing 91 inside (i.e. the second wall 109L right side), thereby between the second wall 109L and transfer roll driven wheel 135, have a preset distance.

Equally, in an exemplary embodiment, it is upper that transfer roll 137 can be located at the second wall 109L, and the second wall 109L is positioned at the first arm 108L right side of the rear side wall portion 105L of the left side wall 96 of bulging box 27.Like this, transfer printing electrode 137 and transfer roll driven wheel 135 are arranged on the right side of the first wall 108L, can obtain thus avoiding with respect to main casing 2 attached/protection of the damage that contingent friction or scraping cause when demounting process cartridge 20.

As shown in figure 20, referring to the developer box 28 in handle box 20, provide the right-hand member of roll shaft 62 and the right-hand member of development roll shaft 64 to be rotatably supported on the supporting member 82 of being made by dielectric resin material, and the annular component 83 that on the left end of roll shaft 62 and the left end of development roll shaft 64, installation is made up of electroconductive resin material is provided.

By by development roll shaft 64 with provide on the annular component that roll shaft 62 is connected to conduction, developer provides roller 31 and developer roll 32 can keep identical electromotive force.Like this, support and provide the supporting member 82 of the right-hand member of roll shaft 62 and the right-hand member of development roll shaft 64 can do location accuracy and rotational stabilization that roller 31 and developer roll roller 32 are provided to increase developer greatly.This bearing part 82 can also be made and be contributed to reduce the manufacturing cost of developer box 28 and/or handle box 20 by cheap insulating material.

As mentioned above, in certain embodiments, developer box 28 can comprise gear cap 77.As shown in Figure 5, gear cap 77 can at least cover input gear 68, stirrer-driven gear 69, and neutral gear 70, developer roll driven wheel 71, provides the part of roller driven wheel 72.Gear cap 77 can help protection gear 68,69,70,71 like this, and 72 contingent infringements while avoiding developer box 28 and/or handle box 20 with the attached dismounting of main casing 2.

Further, in an exemplary embodiment, not only Support Gear 68,69,70,71 and 72 and support the left end of development roll shaft 64 of gear cap 77.Like this, more can ensure the location accuracy of developer roll 32 and gear 68,69,70,71 and 72.As a result, although reduce the another number of packages amount and the structure of having simplified developer box 28 of developer box 28, can provide stable driving force to developer box 28.

Turn to now the connecting elements 73 that is attached to input gear 68 by advancing, as mentioned above, in handle box 20 is arranged on main casing 2 and when protecgulum 7 is closed, promotion part 179 engages with connecting elements 73, as shown in Figure 28 (b).Connecting elements 73 is pushed ahead the connecting hole 74 of input gear 68 and is connected with input gear 68, thereby connecting elements 73 and input gear 68 are rotated integratedly.That is to say, connecting elements 73 can not rotate with respect to input gear 68.

Meanwhile, developer roll contact element 175 advances and passes through and contacts developer roll electrode 76 along the overlapping developer roll electrode 76 of Width.As a result, ensure this connection, provide stable electric energy and stable driving force to developer box.

Under this state, because developer roll contact element 175 is by contacting developer roll electrode 76 and press developer roll electrode 76 with developer roll electrode 76 is overlapping on Width, so the left side wall 38 that developer roll contact member 175 contributes to prevent developer box 28 is due to the movement or the rotation that impose on the driving force of input gear 68 by connecting elements 73 and produce.

About annular component 83 and the bearing part 82 of handle box 20, because annular component 83 and bearing part 82 are arranged on development roll shaft 64 two ends of developer box 28, simultaneously, each annular component 83 is received by corresponding axle receptacle 116 on drum box 27, so in the time transferring a driving force to input gear 68 from connecting elements 73, can control the movement or the rotation that preferably prevent developer box housing 29 by drum box housing 91.

In other words, in an exemplary embodiment, the shape and size of annular component 83 can be extended along above-below direction, substantially stride across roll shaft receptacle 116 separately, preferably prevent that developer box 28 and development roll shaft 64 are with respect to movement and/or the rotation of rousing box housing 91 thereby control.

Adopt the handle box 20 of implementing one or more aspects of the present invention, the size of the laser printer 1 of drum box 27 and/or developer box 28 can reduce, and the average length of the reliability service of printer 1 use handle box 20 imagings (not comprising low or empty the caused imaging problem of toner amount in developer box 28) time increases.Configuration of electrodes in handle box 20 is conducive to minimizing preferably to be prevented electrode 148,132,131,127,137 and 76 injury, the mode of electrode spread also can help to reduce and preferably prevent electrode contact portion 168,169 in main casing 2 simultaneously, 170,171,172 and 173 injury.

Like this, can reduce electrode 148,132,131,127,137 and 76 and corresponding connecting portion 168,169,170,171,172 and 173 and/or contact site 271,272,273,274, the contact fault between 275 and 276.Like this, energy on average ensures to be stable into as required electric energy is stable in for a long time provides.

Except enough and stable electric energy, handle box 20 also depends on correct location to process high-quality image.For example, in the time that handle box 20 is attached on bulging box 27, at least, in the time that image imaging process starts, developer roll 32 must contact photosensitive drums 92.As mentioned above, in an exemplary embodiment, as shown in Figure 21 (a)-21 (d), for developer box 20 being attached to bulging box 27, developer box protrudes 79 and engages with the pressing element 151 of the pressurization part 149 of rousing box 27.

Developer box protrudes 79 and is arranged on the upper extension 37 of developer box 28, and pressurization part 149 is arranged in the lower extension 104 of bulging box 27.In the time that developer box protrusion 79 presses to pressurization part 149, developer box protrudes 79 contact pressing means 151, and in the time that developer box outstanding 79 is " locked " in pressurization part 149, the expulsive force backward that developer box protrusion 79 and developer box 28 are produced by spring 152 promotes backward, and the expose portion of the developer roll 32 of developer box 28 contacts with the expose portion of photosensitive drums 92 like this.

Like this, in such embodiments, in the time that developer box 28 is attached in bulging box 27, pressurization part 149 contributes to ensure the abundant contact between photosensitive drums 92 and developer roll 32.Like this, in the time that such handle box 20 is attached in main casing 2, during the imaging operation in laser printer 1, handle box 20 contributes to guarantee the abundant contact between photosensitive drums 92 and developer roll 32

In an exemplary embodiment, developer box protrude 79 on Width from left side wall extension 52 and right side wall extension 53 the rear bottom outwardly convex of at least one.Only arranging in the embodiment of a pressing means 149, be positioned at protrude 79 with the developer box in pressurization part 149 same side can be easily and the pressing means 151 that accurately contacts pressurization part 149.Like this, can ensure that developer roll 32 pressurizes more accurately to photosensitive drums 92.

Further, in the embodiment of handle box 20, in the time that developer box 28 is attached on bulging box 27, the contact site 161 of locking lever 153 and the developer box of upper extension 37 protrusion 79 that are arranged on lower extension 104 engage, to prevent that developer box from protruding 79 and moving up.As a result, developer box 28 is " locked " on drum box 27 and preferably prevents the movement of developer box 28 with respect to drum box 27 to control, and keeps the contact between developer roll 32 and photosensitive drums 92.

In an exemplary embodiment, when developer box 28 is by from drum box 27 while dismantling, downward voltage-controlled product 158 discharges from the contact site 161 of pressurization part 149 so that developer box is protruded to 79.By the spatial placement control piece 158 between the left side wall 38 of for example developer box housing 29 of the surrounding border at handle box 20 and the left side wall 96 of drum box housing 91, in an exemplary embodiment, locking lever 153 is not outstanding from the outer boundary of handle box 20.

Like this, handle box 2 and main casing 2 attached and separate during, locking lever 153, especially control piece 158 can not engage or rub with main casing 2.But in certain embodiments, control piece 158 can exceed the outer boundary projection of handle box.

In the embodiment of handle box 20, developer box protrudes 79 as pressurized part (operation part) and is engaged part.In other words, it is pressurized 151 parts of pressurizeing or operating in handle box 28 that developer box protrudes 79, and the part engaging with the contact site 161 of pressurization part 149 in developer box 28.Like this, in an exemplary embodiment, by arranging one not only as pressurized part but also as the member (being that developer box protrudes 79) that is engaged part, can simplify the structure of handle box 20, and reduce the another number of packages amount of developer box 28.When pressurized part with when being engaged part and configuring respectively, the quantity of developer box 28 another parts can increase.

Another mechanism that ensures the contact between photosensitive drums 92 and developer roll 32 that contributes to arranging in the embodiment of handle box 20 rouses the outshot 118 engaging with the keeper 84 of developer box 28 in box 27.As shown in Figure 3, although outshot 118 and keeper 84 are simple in structure, outshot 118 and keeper 84 contribute to simply accurately with respect to drum box 27 locating development agent boxes 28.In the time that developer box protrudes 79 pressurized portion 149 " locking ", outshot 118 also contributes to control developer box 28 relative to rousing moving of box 27 with keeper 84.

In addition,, about location, as mentioned above and as shown in fig. 1, in the time that handle box 20 is attached in main casing 2, laser printer 1 can be furnished with and drum box protrudes 150 align members that engage 166.In an exemplary embodiment, because relatively little member on keeper 166 and handle box 20 (as, drum box protrudes 150) have an effect together, keeper 166 itself is also smaller, so keeper 166 contributes to reduce the overall dimensions of laser printer 1, contribute to ensure that handle box 20 accurately navigates in main casing 2 simultaneously.

In imaging process, photosensitive drums 92 promotes the front end of handle box 20 downwards with respect to the rotation meeting of developer roll 32, rear end simultaneously that upwards promote handle box 20, thereby handle box 20 is rotated round the lower front end of handle box 20, and during this, keeper 166 contributes to control the movement of handle box 20 equally.

Keeper 166 is positioned at the below of handle box 20 front ends, as a block and the front end that contributes to stop handle box 20 move down because photosensitive drums 92 and developer roll 32 rotate the expulsive force causing.

Again refer to handle box 20, by gear mechanism 45 and locking lever 153 are arranged on the same side of developer box 28, can reduce the width of developer box 28.In addition, by pressurization part 149 being set in the lower extension 104 at drum box 27, developer box is set on the upper extension 37 of developer box 28 and protrudes 79, can reduce the thickness (, the distance of above-below direction) of handle box 20 and/or the whole size of handle box 20.

By reducing the size of handle box 20, can reduce the size of laser printer 1.For example, in the time reducing the thickness of handle box 20, the thickness (, the distance on above-below direction) in attached in main casing 2/dismounting chamber 6 also can reduce.More specifically, in the time that the whole size (, thickness, volume, length, and/or width) of handle box 20 is reduced, the size in attached in main casing 2/dismounting chamber 6 also can be reduced.As a result, the overall dimensions of laser printer 1 also can be reduced.

About the bulging box 27 of handle box 20, as shown in Figure 15, upper registration rollers 14 and rib of the front end 165 can be arranged on the bottom surface of end wall extension portion 195 of lower extension 104.End rib 162 can be arranged on the bottom surface of front bottom wall part 194 of developer box accommodation section 103.In an exemplary embodiment, in the time that developer box 28 is attached on bulging box 27, rib of the front end 165 be positioned at registration rollers 14 before, end rib 162 be positioned at registration rollers 14 after, like this, from paper provide paper 3 that roller 10 provides by end rib 165 guide to upper and lower registration rollers 14, then guided to photosensitive drums 92 by end rib 162.

More specifically, in an exemplary embodiment, the combination of the rib of the front end 165 in the end rib 162 on drum box 27 diapires 98 and drum box 27 end wall extension portion 195 contributes to respectively to strengthen diapire 98 and end wall extension portion 195, formed a continuous guide simultaneously, can paper 3 be guided to upper and lower registration rollers 14 along end wall extension portion 195 and diapire 98, then further guide to photosensitive drums 92.

In handle box 20 except contributing to improve imaging process and/or reducing the feature of handle box 20 sizes, the feature of handle box 20 is by handle box 20, drum box 27 and/or developer box 28 be attached to respectively main casing 2 neutralize from main casing 2 dismounting or mutually attached connect and separate during also contribute to the manipulation of user to these members.

As mentioned above and as shown in Figure 5, developer box 28 can be furnished with handle 81 on its front side.In an exemplary embodiment, grip part 78 be arranged at developer containing part 30 before, instead of developer containing part 30 above or below.Like this, the whole thickness of developer box 28 (, the distance on above-below direction) can not increase to some extent because of grip part 78.In addition,, in the time that handle box 20 is attached in main casing 2, grip part 78 is easy to encounter and grip thereon more.

More specifically, as mentioned above, because the whole size of for example imaging device of laser printer 1 is reduced, so imaging process needs the member of handle box 20 to be arranged in generally the darker position of main casing 2.Like this, usually, grip part 78 is the closer to the opening of attached on main casing 2 and demounting process cartridge 20, and user is more attached/demounting process cartridge 20.But in certain embodiments, grip part 78 can be arranged on the top of developer containing part 30.

In addition, by grip part 78 being set at integrated connection to the upper extension 37 on the underframe 34 of developer box accommodation section 29, can can stably operate developer box 28 by grip part 78, and not need extra connecting elements to ensure the connection between upper extension 37 and developer containing part 30.But in certain embodiments, upper extension 37 can be connected with developer containing part 30 by some connecting elements.

In the time that developer box 28 is attached to bulging box 27 with formation handle box 20, grip part 78 can be substantially for remove/attached/manipulation/gripping drum box 27 and developer box 28 (, handle box 20).Like this, in certain embodiments, drum box 27 itself does not contain handle.In other embodiment, drum box 27 itself can be furnished with the handle of self.

In the embodiment of the developer box 28 of handle box 20, as shown in Figure 5, the upper front side wall 42 of the upper wall extension 50 of the upper extension 37 alongst extending and the upper extension 37 that substantially extends along above-below direction all has substantially smooth outside surface.Because handle box 20 sizes are reduced, therefore, when handle box 20 is when main casing 2 is dismantled, by basic even curface is set, user can easily manipulate handle box 20 by catching the smooth outside surface of handle box 20.

In addition, in the embodiment described in Figure 13, the combination of the notch 80 of upper extension 37 and the notch 119 of lower extension 104 defines an open space around handle 81, and user can more easily catch handle 81 like this.Therefore the handle 81 that, is arranged at the basic centre of developer box 28 Widths and the basic centre of upper extension 37 thickness directions (being above-below direction) can firmly easily be gripped.

In the embodiment shown in Fig. 5, handle 81 be one extend along Width between the opposite face part of front side wall 42 in groove 80 be shaft-like member.In certain embodiments, handle 81 can be from alongst extend to form notch 80 sidewalls the member of one or two part projection of front side wall 42, and in certain embodiments, handle 81 serially from extend to form along Width notch wall after 80s front side wall 42 inside extend.Handle 81 can have different shapes, and in embodiment as shown in Figure 3, the xsect of handle 81 is U-shaped or spill, and user can firmly easily catch the forearm of U-shaped handle 81 like this.

As shown in Figure 13 and 19, the downside antetheca 99 of box 27 is the same with the upper front side wall 42 of developer box 28 all extends along above-below direction for drum.Like this, in the time that developer box 28 is attached in bulging box 27, handle box 20 has substantially smooth front outside surface 61, except the notch 80 of upper extension 37 and the notch 119 of lower extension 104.Like this, as mentioned above, easily operational processes box 20 and do not have danger and the handle box 20 members damages that the lug boss of processed box 20 stings or injure and/or dye dirty possibility cosily of the front portion that user can be by holding his/her handle box 20.

In addition, in an embodiment, the notch 119 of lower extension 104 is substantially overlapping with the notch 80 of upper extension 37.Like this, in the time that developer box 28 is attached in bulging box 27, the combination of notch 80 and 119 can provide a larger space for user firmly grasps handle 81 in attached/demounting process cartridge 20.More specifically,, in the embodiment of handle box 20 as shown in figure 13, in the time seeing from the front of handle box 20, the combination of notch 80 and 119 forms the shape of a basic rectangle.

In an exemplary embodiment, in the time that developer box 28 is attached on bulging box 27, the prodger 51 of upper extension 37 is received by the receptacle 120 of lower extension 104.Prodger 51 and/or receptacle 120 help the wrong developer box 28 of reduction to be attached to bulging box 27 simultaneously or developer box 28 is attached to the chance on wrong bulging box 27.

The result of upper front side wall 42 substantially flats is exactly the front outside surface 61 that developer box 28 described above has substantially flat.Like this, as shown in figure 30, developer box 28 can down be located on surface 197 front side.Also have, although upper front side wall 42 itself is enough to make developer box 28 can front side to be down located on surface 197, substantially strides across from the lower limb of upper front side wall 42 prodger 51 that the Distance Remaining of the thickness (being above-below direction) along developer box 28 extends and also make developer box 28 be arranged on surperficial 197 under side direction before can be more stably.

By developer box 28 front sides being down located on surface 197, can make developer box 28 deposit vertically to prevent that developer roll 32 from contacting the damage of the developer roll 32 of placing the surface 197 of developer boxes 28 and cause.

As mentioned above, in an exemplary embodiment, each handle box 20 and drum box 27 have the front outside surface of substantially flat.When handle box 20 and drum box 27 are by when main casing 2 takes out, because each handle box 20 and drum box 27 have the front outside surface of substantially flat, handle box 20 can down be located in similar in appearance to developer box 28 front sides as shown in figure 30.

By handle box 20 and drum box 27 front sides are down left on surface 197, in the time that handle box 20 is outside main casing 2, can reduces preferably and prevent for the infringement of photosensitive drums 92.In assembling, by by handle box 20, drum box 27, developer box 28 front sides are down located in, and can easily assemble for example this class A of geometric unitA of channel seal bar.

In addition, in the embodiment of developer box 28, receptacle 352 can help to reduce preferably to prevent that developer box 28 is attached to incorrect image processing system (for example image processing system different from laser printer 1).By fluted body or sawtooth pattern are set but not the receptacle 352 of teat shape, the overall dimensions of developer box 28 is owing to comprising that receptacle 352 increases.Equally, by receptacle 352 being set at upper extension 37 instead of along the front portion 44 of lower wall 40, do not reduce the volume (being contained in the quantity of the toner of developer containing part 30) of developer containing part 30.

Further, in an exemplary embodiment, receptacle 352 is taked jagged form or is become notch along the upper dihedral of upper extension 37, makes receptacle 352 extend to front side upper wall 42 from upper wall extension portion 50 consistently.Like this, in handle box 20 is attached to main casing 2 and protecgulum 7 rotate around its lower end and while closing, the teat 351 being arranged on protecgulum 7 can be fitted in receptacle 352 more easily.

Figure 31 is the sectional view of another handle box 720 embodiment on length direction, and this handle box 720 comprises another developer box 728 embodiment and another drum box 727 embodiment.Handle box 720 in Figure 31 is attached to bulging box 727 by developer box 728 and forms, and as above-described embodiment, handle box 720 can the attached and dismounting with respect to main casing 2.Figure 31-41 shown that above-mentioned handle box 720, developer box 728, drum box 727 be relevant to Fig. 1-30 some specifically change.Like this, ensuing to the description of the embodiment in Figure 31-41 in, all use identical reference number to represent with the similar element of embodiment shown in Fig. 1-30 or identical element, and to its description content also for simple and clear object is omitted.

Figure 32 is left side perspective view before the top of developer box 728 shown in Figure 31, and Figure 33 is the right side perspective view of the front end of developer box 728, and Figure 34 is left side perspective view behind the top of developer box 728 shown in Figure 31.

Developer box 728 comprises developer box housing 729, and developer provides roller 31, developer roll 32, stirrer 46, thickness adjustment part 33.Developer box housing 729 is rotatably supporting developer roller 31 is being provided, developer roll 32, stirrer 46.

Developer box housing 729 can be formed by the such resin material of for example tygon, and is the rectangular shape of rear aperture generally.Developer box housing 729 comprises underframe 34 and upper frame 35.As shown in Figure 32 and 33, underframe 34 comprise integratedly face each other arrange and between the left side wall 38 and the right side wall 39 that have living space at Width band, the lower wall 40 and the upper wall 41 that are connected with right side wall 39 with left side wall 38, be located at the upper front side wall 42 of upper wall 41 leading edges.The rearward end 88 (seeing Fig. 4) of upper wall 41 provides portion 36 rear end 87 above corresponding to developer.

As shown in figure 33, in certain embodiments, developer box 728 comprises multiple for guiding the rib 311 of paper 3 on the outer bottom surface at rear portion 43.Rib 311 extends parallel to each other and leaves each other interval substantially at length direction.When each rib 311 of looking from the left and right sides of developer box 728 can be configured as step-like or wavy so that the feather edge at the rear portion of rib 311 from the distance of the rotation of developer roll 32 than away from the anterior feather edge of rib 311.In the time that developer box 728 is attached to bulging box 727, rib 311 is configured in the face of paper guiding rib 194C.In operation, paper 3 is directed between rib 311 and paper guiding rib 194C.Rib 311 contacts and faces the part basic horizontal in the longitudinal direction of paper guiding rib 194C with paper.

Figure 32 and 33 shown can in some developer boxes 728 and/or handle box 720, use for gripping and the embodiment of the grip part 201 of process cartridge, developer cartridge 728.As shown in Figure 13, grip part 78, grip part 201 can be arranged on the upper extension 37 of developer box housing 729.Grip part 201 comprises notch 202, is arranged on the handle 203 in notch 202.

Notch 202 can be formed on the basic centre of upper wall extension 50 along its length.In an exemplary embodiment, as the result of the cut part of basic rectangle, notch 202 broad ways are formed by the front portion of upper wall extension 50 and the top of upper front side wall 42.As shown in Figure 32 and 33, the cut-out of upper wall extension 50 and upper front side wall 42 can form consistently, and user can easily contact handle 203.

Notch 202 is limited by two side wall portions 204 of upper front side wall 42 and rear wall parts 207.Side wall portion 204 is substantially perpendicular to upper wall extension 50 and upper front side wall 42 extends toward each other and at length direction, and rear wall parts 207 front side wall 42 on Width is basically parallel to extends.

Handle 203 extends between two side wall portions 204.Handle 203 has the first wall portion 205 and the second wall portion 206, both extends between two side wall portions 204 along Width.The rearward end of the second wall portion 206 is extended continuously from the rear wall parts 207 of upper front side wall 42.The rearward end of the first wall portion 205 is extended continuously from the leading section of the second wall portion 206.

In certain embodiments, the second wall portion 206 can be the tabular component in width and the extension of length direction basic horizontal, and the first wall portion 205 can be from the second upwardly extending tabular component of wall portion 206, thereby the first wall portion 205 and the second wall portion 206 shapes are at an angle.In this embodiment, the combination of rear wall parts 207 and the first wall portion 205, the second wall portion 206 can go out a U font by configuration.

In certain embodiments, for example, as Figure 32, the embodiment shown in 33, can arrange a finger grips 208 at the basic middle part of handle 203.In finger grips 208, the second wall portion 206 can project upwards that along a slope the basic middle part of rear wall parts 207 is connected with top edge with the basic centre of the first wall portion 205.Finger grips 208 can be along the basic semicircle of the first wall portion 205 leading sections formation or the cut-out of rectangle.

The different views of the bulging box 727 shown in Figure 31 has been described in Figure 35-39.In an exemplary embodiment, transfer printing electrode opening 142 is continuous openings that the cut-out in each the second wall 109L and the 3rd wall 110L of left side wall 96 of drum box housing 791 forms.As shown in Figure 41, transfer printing electrode opening 142 xsects are the word of falling L shape substantially along Width.In an exemplary embodiment, the shape of transfer printing electrode 737 is corresponding to the shape of transfer printing electrode opening 142.Like this, in an exemplary embodiment, transfer printing electrode 737 xsects are the word of falling L shape along Width.

Transfer printing electrode 737 can be made up of electroconductive resin material.As shown in Figure 37, transfer printing electrode 737 comprises along outwards outstanding electrode contact portion 252 of Width, and along Width from the electrode contact portion 252 further outward extending junction surfaces 251 of top ends, thereby xsect forms L word shape.On the inner side of drum box housing 791, (, the right of left side wall 96) can arrange a contact element (without diagram).In the time that transfer printing electrode 737 is attached on bulging box housing 791, contact element can contact from top the junction surface 251 of transfer printing electrode 737.In the time of contact element contact junction surface 251, can in laser printer 1 operational process, stop transfer printing electrode 737 to move or skid off from transfer printing electrode receptacle 143 tops.

In an exemplary embodiment, as shown in Figure 37 and 38, the transfer printing electrode opening 142 on the second wall 109L outside surface can arrange a block piece 209 below.Block piece 209 upwards extends below substantially adjacent to the rear border of transfer printing electrode opening 142 on the second wall 109L outside surface substantially.As the result of block piece 209, when drum box 727 and/handle box 720 is while being attached in main casing 2, block piece 209 contributes to stop transfer printing electrode connecting portion 272 (having discussion below) to enter the gap between transfer printing electrode maintaining part 138 and transfer printing electrode 737.Therefore, transfer printing electrode connecting portion 272 can be accurately connected with transfer printing electrode 737.

In addition,, as Figure 35, shown in 38 and 39, in certain embodiments, left fitting piece 210 and right fitting piece 214 are formed at the left and right end of rear wall 100.Left fitting piece 210 be arranged at the 5th wall 112 before, and right fitting piece 214 entirety are extended from upper rear wall 100.Left fitting piece 210 and right fitting piece 214 can be the groove shape members of facing downwards that presss from both sides respectively concave wall 117 tops of pinching left side wall 96 and right side wall 97.

Left fitting piece 210 entirety comprise top board 211, left plate 212 and right plate 213.Left plate 212 faces right plate 213, and all alongst extends.Left plate 212 and right plate 213 are substantially parallel to each other, and are connected by top board 211 on its top.Top board 211 links together left plate 212 and right plate 213 stretch out from the lower front end of wall 111.Like this, left plate 212, having constituted and can receive the groove of putting upside down of concave wall 117 of right plate 213 and top board 211.

Right fitting piece 214 entirety comprise a rectangular-shaped top board 215, and top board 215 extends and connect the upper end of left plate 216 and right plate 217 towards front.Left plate 216 and right plate 217 are tabular component, and from the left and right end of top board 215 to downward-extension, form one and can receive the prone groove of concave wall 117.

As shown in Figure 37, in certain embodiments, a substantially rectangular-shaped paper outlet 222 can be arranged between the rear end, top of rear bottom wall part 193 and the rear end of upper rear wall 100.Between paper 3 is by photosensitive drums 92 and transfer roll 94, after image is transferred on paper 3, paper 3 is discharged from paper outlet 222.The width of paper outlet 222 is greater than the width of paper 3, and the paper 3 of being convenient to like this letter paper or A4 size therefrom passes through.

In addition, in embodiment as shown in Figure 37, a brush back up pad 223 of extending to photosensitive drums 92 from paper outlet 222 tops can be set in rear bottom wall part 193 below.Brush back up pad 223 can be arranged on thickness direction its rear end a little more than its front end.As shown in Figure 31, be arranged at the front end of brush back up pad 223 along Width for supporting the brush support member 123 of cleaning brush 95.

In addition, on the outside surface of brush back up pad 223, can form multiple prevention contact ribs 224, between rib, on Width, have certain intervals.Stop contact rib 224 alongst to extend.In addition, as shown in Figure 37, on the both ends of brush back up pad 223 outside surfaces, arrange from brush back up pad 223 or outside surface is seen the prevention contact site 225 that is fundamental triangle.

As shown in Figure 37, the reclinate relief angle of brush back up pad 223 forms prevention contact site 225.Stop contact site 225 to reduce the width on paper outlet 222 tops, contribute to like this to stop the paper 3 of exporting from paper outlet 222 to contact rib 224 with prevention and contact, more specifically, contact with the lower or outside surface of brush back up pad 223.The left and right edges of the paper 3 of exporting from paper outlet 222 like this, can be prevented from contact site 225 and guide and push away the lower surface of brushing back up pad 223.

Therefore, the center section along Width of paper 3 can be prevented from being raised to the side of brush back up pad 223.Like this, brush back up pad 223 and stoping contact rib 224 and contributes to minimizing preferably to prevent from being transferred to toner image on paper 3 and brush back up pad 223 and contact.As a result, can reduce and preferably prevent from brushing back up pad 223 bottom surfaces by toner contamination, and ensure to be transferred to the quality of the toner image on paper 3.

More specifically, as shown in Figure 37, in certain embodiments, stop contact rib 224 can be arranged on the lower surface of brush back up pad 223.Stop contact rib 224 to extend by the rear side from the top of paper outlet 222 to photosensitive drums 92.Stop contact rib 224 to contribute to reduce and preferably prevent that transfer printing from having the paper 3 of toner image to contact with the lower surface of brush back up pad 223.In other words, if in the time that paper 3 is exported from paper outlet 222 near brush back up pad 223, paper 3 by with contact rib 224 from the outstanding prevention of lower surface of brush back up pad 223 and contacts, and do not contact with the lower surface of brushing back up pad 223.

Therefore, can stop the lower surface of brushing back up pad 223 to be dyed by toner dirty, these toners pass to another part or next paper 3 of output paper 3 later again, reduce the quality that is transferred to the toner image on paper.Like this, stop contact rib 224 to contribute to reduce preferably to prevent from brushing back up pad 223 contaminated, the paper 3 of therefore exporting from paper outlet 222 can be not contaminated, thereby ensured to be transferred to the quality of the toner image on paper 3.

As shown in Figure 37, be provided with the thin-film member 226 of a basic rectangle in the basic centre of brush back up pad 223 lower surfaces.On thin-film member 226 Widths, be wider than slightly the width of pick-up roller 12.Thin-film member 226 can be made up of resin material, for example polyethylene terephthalate.Thin-film member 226 can be positioned to from brush back up pad 223 front end a little forward (as, towards photosensitive drums 92) projection.

Thin-film member 226 can be sticked to by a kind of double sticky tape the basic centre of brush back up pad 223 lower surfaces.Double sticky tape can be arranged at the front end (and being positioned to adjacent with photosensitive drums 92) of thin-film member 226.In other words, double sticky tape also can be arranged in thin-film member 226 from brush back up pad 223 position of projection forward.

By in brush back up pad 223 location, the basic center of lower surface towards drum box 727 front sides (, towards photosensitive drums 92) slightly microprotrusion is to the thin-film member 226 of brushing outside back up pad 223 leading edges, and the paper dust removing from photosensitive drums 92 surfaces with cleaning brush 95 can be absorbed by thin-film member 226.In addition, also, by double sticky tape is set from the position of brush back up pad 223 front end projections in thin-film member 226, the paper dust that cleaning brush 95 scans out is adsorbed by the bonding surface of double sticky tape, can stop like this paper dust to fly away from from thin-film member 226.

In certain embodiments, as shown in Figure 35, a bulging box handle 234 can be set.Drum box handle 234 is arranged in lower extension 104.Drum box handle 234 comprises notch 235 and drum box handle 236.Drum box handle 236 can be formed by platform shape substantially upwards of of the end wall extension portion 195 of lower extension 104 or inverted U-shaped outshot.In the time that developer box 728 is attached on bulging box 727, drum box handle 236 is held to remove/attached/manipulation drum box 727 and/or handle box 720.

More specifically, notch 235 is formed at the basic centre of downside extension 104 along Width.End wall extension portion 195 and lower front side wall 99 are excised continuously, are like this shape of basic rectangle on the cut one-tenth planimetric map of the fore-end of diapire extension 195 along Width.Notch 235 can be formed as width and be slightly less than the width of the notch 202 on the upper wall extension 50 that is formed at developer box 728

Drum box handle 236 can entirety comprise a pair of side support member 237 upwards extending substantially vertically from notch 235 left and right sides.Drum box handle 236 also comprises the upper rearward end rear support part 238 that slightly low dip extend of the past bottom wall part 194 to drum box handle 236.Drum box handle 236 also comprises that one is arranged between side support member 237 and rear support part 238 tops, is substantially rectangular-shaped top part 239 on planimetric map.

In addition, as shown in Figure 36, an opening 240 is formed on rear support part 238.From above, the rectangular shape of opening 240.Opening 240 is exposed to lower extension 104 the developer box accommodation section 103 of bulging box 727.Like this, together with top part 239 is held in handle 203 time, finger can insert by opening 240, and therefore, in the time that developer box 728 is attached in developer box accommodation section 103, finger can touch the front portion 44 of developer box 728 lower walls 40.As a result, can complete more accurately the attached and dismounting of handle box 720 in main casing 2.

In addition, in these embodiments, user likely only use with top part 239 in the overlapping finger grips 208 of cut portion 241 hold handle 203, just can be by developer box 728 dismounting from drum box 727.

Further, as shown in figure 37, in the time that developer box 728 is attached on bulging box 727, drum box handle 236 fits in the notch 202 of developer box 728.The shape of top part 239 or size can be slightly smaller than notch 202 at Width, therefore in the time that developer box 728 is attached on bulging box 727, between the basic pair of sidewalls portion 204 at developer box 728 of top part 239, extend.

On top part 239, can form a step 261 so that the basic first half of substantially latter half of ratio of top part 239 is relatively higher.Further, because step 261 is formed on top part 239, become relatively high so substantially latter half of, first half is relatively low, and together with top part 239 is held in handle 203 time, finger may be hooked on step 261.Result grips top part 239 and handle 203 and becomes and be more prone to, and attached and dismounting can more accurately complete with respect to the entirety of main casing 2 for drum box 727 and developer box 728.

As shown in figure 35, cut portion 241 can be formed on top part 239 part overlapping with the finger grips 208 of the handle 203 of developer box 728.Cut portion 241 has a semicircular in shape of extending on length and Width substantially.In certain embodiments, in the time that developer box 728 is attached on bulging box 727, between top part 239 and handle 203, there is a very little gap.In certain embodiments, in the time that developer box 728 is attached on bulging box 727, top part 239 and handle 203 are in contact with one another.

As a result, as shown in Figure 37 and 41, together with in the time that developer box 728 is attached on bulging box 727, handle 203 can be held in the finger grips of handle 203 208 with drum box handle 236.Because the top part 239 of drum box handle 236 is positioned to be arranged on handle 203 on the upper extension 37 of developer box 728 overlapping, so together with top part 239 can easily be held with handle 203.As a result, developer box 728 is held together with can be easily with drum box 727 and with respect to integrally attached and dismounting of main casing 2.

That is to say, when developer box 728 is with drum box 727 during in attached state, in the time of or dismounting developer box 728 attached with respect to drum box 727, developer box 728 is prevented from separating from drum box 727.More specifically, when developer box 728 is attached on bulging box 727 and when drum box handle 236 is held, top part 239 is supporting handle 203 thereon, so that developer box 728 and drum box 727 can easily operate under attached state.

Refer now to end wall extension portion 195, as shown in Figure 36, rib 165 of the front end is arranged on the outer bottom of end wall extension portion 195 of diapire 98 along Width, and diapire 98 comprises the bottom side that is formed on the notch 202 on lower front side wall 99.As mentioned above, rib of the front end 165 can form discretely with drum box housing 791, and by than the material of developer box housing 729 and drum box housing 791 also hard for example poly-acetal resin of resin material make.

Like this, if rib of the front end 165, owing to wearing and tearing with the result contacting of paper, can be changed rib of the front end 165 without changing whole bulging box 727 and/or handle box 20.More specifically, in embodiment as shown in figure 36, thereby rib 165 of multiple front ends is located at each interval at length direction and is extended along Width.Rib of the front end 165 can be attached to by being connected to the web member 227 of broad ways extension the lower surface of end wall extension portion 195.

Like this, at the lower surface of end wall extension portion 195 of the diapire 98 of drum box 727, rib of the front end 165 can be used as that to be positioned in a part of the web member 227 that Width extends attached, thereby at least covers the space between side support member 237 lower ends.Result, by be integrally formed side support member 237 and drum box handle 236 from the end wall extension portion of diapire 98, can strengthen the intensity (rigidity) of side support member 237 and drum box handle 236, and the material that rib of the front end 165 can be stronger by the material than forming bulging box housing 791 forms.

Like this, in certain embodiments, web member 227 can by the material than forming bulging box housing 791 also strong material form.In certain embodiments, the end wall extension portion 195 of diapire 98 can extend continuously substantially between the left and right sides of lower extension 104, and one comprises the teat for drum box handle 234.

Due to less, gentlier, the more lasting demand of image forming apparatus, another aspect of the present invention be to provide keep also possessing compact form in the situation that realize the compact of the necessary feature of function separately can attached/dismounting drum box, compact can attached/dismounting developer box, compact can attached/demounting process cartridge, so that the inner space of image forming apparatus is effectively utilized more.According to another aspect of the present invention discussed below, the feature of implementing the size of each different component of one or more aspect of the present invention, bulging box 727, developer box 728, handle box 720 provides in Figure 42-53.The exemplary-dimensions of each element can allow to adopt and be effectively utilized according to the inner space of the image forming apparatus of the bulging box 727 of one or more aspect of the present invention, developer box 728, handle box 720.

Figure 42-47 are respectively the planimetric map that comprises reference dimension mark, rear view, front view, left view, the upward views of embodiment of drum box 727, along the sectional view of A-A line in Figure 31.

The measurement size relation of all parts of the box 727 of drum shown in Figure 31 will be explained with reference to figure 42-47 and table 1-4 below.In addition, although do not set reference number on Figure 42-47, used the relation of the parts of discussing in parts that reference number shows in clarifying Figure 42-47 and prior figures in 1-4 at table.

The measuring unit showing below in 1-8 is millimeter, except angle.All numerical value providing all comprises accurate numerical value or accurate numerical value roughly.For example, the value of the D1 in table 1 is provided as 7.6.In a specific embodiment, the distance B 1 between the most external of ground-electrode 127 and the left side wall 96 of drum box housing 791 is exactly accurate 7.6 millimeters or approximately 7.6 millimeters like this.In form below, a lot of sizes is all using the position of drum axle 125 (being ground-electrode 127) as determining with reference to position, because if the position deviation reference position of drum axle 125, will there will be incomplete contact between ground-electrode 127 and ground-electrode contact site 276 in main casing 2.In an exemplary embodiment, the outermost of ground-electrode 127 is corresponding to the most external 125A of drum axle 125, and the end 125B of drum axle 125 is corresponding to the part of extending left side wall 96 of drum axle 125.

table 1

table 2

table 3

table 4

Figure 48-53 are respectively the planimetric map that comprises reference dimension mark, rear view, front view, left view, the upward views of the developer box embodiment of Figure 31, along the sectional view of B-B line in Figure 31.

The detailed size relationship of each element of developer box 728 shown in Figure 31 will provide with reference to figure 48-53 and table 5-8 below.In addition, although the reference number of element is not provided in Figure 48-53, in table 5-8, provide the reference number already discussed above that is relevant to prior figures, contribute to clarification to be provided the element of measurement size.

A lot of above-mentioned measurement sizes are all using input gear 68 as determining with reference to position, because if the incomplete connection between connecting elements 73 and input gear 68 may occur in the position deviation reference position of the interior input gear 68 of main casing 2.

table 5

table 6

table 7

table 8

In an exemplary embodiment, the developer of developer box housing 729 provides the outside thickness (T20+T30) (being the position that developer provides portion 36 to form in developer box housing 729) of portion 36 to be less than the outside thickness (T21+T22) (being the position that developer containing part 30 forms in developer box housing 729) of developer containing part (30).In the time that developer box 728 is attached on main casing 2, being provided with developer provides that side of portion 36 to be positioned at the darker position of main casing 2.

In this embodiment, developer box 728 can smoothly be realized with respect to the attached of main casing 2 and dismounting, because the developer of developer box housing 729 provides the outside thickness (T20+T30) of portion 36 to be less than the locational outside thickness (T21+T22) of developer containing part (30).In certain embodiments, the outside thickness (T21+T22) of developer containing part (30) provides the outside thickness (T20+T30) of portion 36 basic identical with developer (the outside thickness (T21+T22) of for example developer containing part (30) provides the outside thickness (T20+T30) of portion 36 to differ within approximately 5 millimeters with developer)

In certain embodiments, developer provides the inner thickness (T24+T25) of the comparable developer containing part of outside thickness (T20+T30) (30) of portion 36 large.Equally, for example, by the shape (equating) of amendment upper frame, can provide a developer box, wherein the outside thickness of developer containing part is less than developer provides the outside thickness of portion.

Outside thickness (T21+T22) the reference location member 84 of developer containing part (30) is determined.Therefore in an exemplary embodiment, keeper 84 is prevented from hindering developer box 728 for the attached of main casing 2 and dismounting.Result just can realize the smoothly attached and dismounting of developer box 728 for main casing 2.

Further, the rib 311 of outside thickness (T20+T23) reference location that the developer of developer box housing 729 provides portion 36 on the lower surface at developer box housing 729 rear portions 43 determined.Therefore, in an exemplary embodiment, rib 311 is prevented from hindering developer box 728 with respect to the attached of main casing 2 and dismounting.Result just can realize the smoothly attached and dismounting of developer box 728 for main casing 2.

In addition, the thickness of rib 311 can provide from developer containing part 30 towards developer portion's 36 sides (rear side) to reduce.In this case, developer provides rib 311 thickness in the Thickness Ratio developer containing part 30 of the rib 311 in portion 36 relatively little.When developer box 728 is attached on main casing 2 and when developer box 728 end face level, rib 311 can be formed as being oriented to basic horizontal with the surface of contact of paper 3.Therefore, paper 3 can correctly guiding in main casing 2.

In the foregoing description, if element can be easily with respect to another element attached/dismounting and not need to for respect to another element attached/dismantle this element and carry out too much assembling or decompose these elements, we just think that this element is can attached/dismountable element so.Like this, in the time that an element is considered to non-dismountable element, if this element is removed by deliberately pry open or bolt etc., this element still can be disassembled.Equally, in the time that an element is considered to detachable components, this element means and can easily be dismantled, for example, after pulling out simply or engage certain releasing means, just can be drawn out.

Although introduced various aspects of the present invention in conjunction with example embodiment above, for the those of skill in the art of the art, much alternative, modifications and variations are all apparent.Therefore, above-described embodiment is just used for explaining the present invention instead of limitation of the present invention.In the case of not deviating from the spirit and scope of various aspects of the present invention, can make various changes.

Claims

1. a developer box (28,728), is characterized in that, comprising:

Framework (29,729), described framework comprises the first side wall (38) and the second sidewall (39), the first side wall (38) and the second sidewall (39) extend substantially in length direction, and described length direction is the direction along the installation direction of developer box;

For the developer containing part (30) of receiving photographic developer, described developer containing part (30) extends to the second sidewall (39) from the first side wall (38) in the Width that is basically perpendicular to length direction;

Provide portion (36) for the developer that developer is provided to Electrifier frame, photoreceptor, described developer provides portion (36) to extend to the second sidewall (39) and receiving photographic developer transmission member (32) from the first side wall (38) in Width, described developer transmission member (32) comprises developer transmission member axle (64) and is supported on the developer transmission member body (65) on developer transmission member axle (64), described developer transmission member axle (64) extends and is rotatably supported by the first side wall (38) and the second sidewall (39) in Width, described developer transmission member is the member that developer is sent to described Electrifier frame, photoreceptor,

For apply the developer electrode (76) of electrical bias to developer transmission member (32), at least a portion of developer electrode (76) is connected to and developer transmission member (32) at the first side wall (38); With

Be used to rotation developer transmission member (32) that the input gear (68) of driving force is provided, described input gear (68) has connecting hole (74), described connecting hole (74) is configured to be connected with connecting elements (73) along described Width, described input gear (68) is rotatably supported at the first side wall (38), in the time that described connecting elements is connected to described connecting hole, described connecting elements is non-rotatably connected on described input gear, thereby described driving force is sent to described input gear from described connecting elements, and described developer transmission member is rotated by described driving force, wherein

Described input gear (68) is arranged on the upstream of developer electrode (76) with respect to installation direction, along described installation direction developer box (28,728) be movably so that attached developer box (28,728) is to image processing system (1) separably.

2. developer box (28 as claimed in claim 1,728), it is characterized in that, further comprise the first gear part (71) for driving force being sent to developer transmission member (32), described the first gear part (71) is meshed with input gear (68) and is supported regularly by an end of the developer transmission member axle (64) from the first side wall (38) outwardly convex.

3. developer box (28 as claimed in claim 2,728), it is characterized in that, wherein developer containing part (30) comprises the agitating member (46) for stirring developer, and described agitating member (46) is included in the stirrer shaft (59) that extends and rotatably supported by the first side wall (38) and the second sidewall (39) in Width.

4. developer box (28 as claimed in claim 3,728), it is characterized in that, further comprise the second gear part (69) that is used to Stirring member (46) that driving force is provided, described the second gear part (69) is supported regularly by an end of the stirrer shaft (59) from the first side wall (38) outwardly convex.

5. developer box as claimed in claim 4 (28,728), is characterized in that, further comprises the 3rd gear part (70) rotatably being supported by the first side wall (38); Wherein, the 3rd gear part (70) is meshed with input gear (68) and the second gear part (69).

6. developer box (28 as claimed in claim 5,728), it is characterized in that, wherein developer provides portion (36) to hold to comprise that developer provides the developer of members shaft (62) that member (31) is provided, and described developer provides members shaft (62) in Width, extend and rotatably supported by the first side wall (38) and the second sidewall (39); It is the member that developer is sent to described developer transmission member that wherein said developer provides member.

7. developer box (28 as claimed in claim 6,728), it is characterized in that, the 4th gear part (72) that is used to rotation developer to provide member (31) that driving force is provided is further provided, described the 4th geared parts (72) is meshed with input gear (68) and is provided an end of members shaft (62) to support regularly from the developer of the first side wall (38) outwardly convex.

8. developer box (28 as claimed in claim 7,728), it is characterized in that, wherein the first side wall (38) is equipped with a lid (77), and input gear, first, second, third and the 4th gear part (68,71,69,70,72) be arranged between lid (77) and the first side wall (38).

9. developer box as claimed in claim 8 (28,728), is characterized in that, wherein input gear (68) can touch by the opening (75) in lid (77).

10. developer box as claimed in claim 9 (28,728), is characterized in that, wherein said developer electrode (76) stretches out from lid (77) in Width.

11. developer boxes (28 as claimed in claim 10,728), it is characterized in that, wherein, developer electrode (76) is the annular component (83) that is attached to the conduction of an end of described developer transmission member axle (64), wherein, the first gear part (71) is arranged between the annular component (83) and developer transmission member body (65) of conduction in Width.

12. developer boxes (28 as claimed in claim 11,728), it is characterized in that, wherein the annular component (83) of conduction is further attached to developer provides the end that end corresponding of members shaft (62) with described developer transmission member axle (64), and therefore the 4th gear part (72) is arranged on and forms between the sponge roll body (63) of developer transmission member body (65) and the annular component (83) of conduction in Width.

13. developer boxes as claimed in claim 12 (28,728), is characterized in that, wherein the annular component (83) of conduction is made up of electroconductive resin material.