CN2867399Y - Imaging equipment and imaging unit - Google Patents

Imaging equipment and imaging unit Download PDF

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Publication number
CN2867399Y
CN2867399Y CN 200520105288 CN200520105288U CN2867399Y CN 2867399 Y CN2867399 Y CN 2867399Y CN 200520105288 CN200520105288 CN 200520105288 CN 200520105288 U CN200520105288 U CN 200520105288U CN 2867399 Y CN2867399 Y CN 2867399Y
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China
Prior art keywords
image
generating unit
framework
imaging device
paper
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Expired - Lifetime
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CN 200520105288
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Chinese (zh)
Inventor
五十岚宏
神村直哉
户松义也
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Brother Industries Ltd
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Brother Industries Ltd
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Abstract

Image forming apparatuses include: a casing; an image forming unit removable from the casing in a first direction; and plural developer cartridges. The cartridges may be attached and detached with respect to the image forming unit in a second direction that is inclined toward the first direction. Other image forming apparatuses include: a casing; an exposure device; a plurality of cartridges configured to be attached and detached with respect to the casing in a first direction; and a recording medium transport system for transporting recording media adjacent the photosensitive members in a second direction. The first direction may be inclined with respect to the second direction, and at least a portion of optical paths of the light emitted from the exposure device may extend parallel with the first direction. Aspects of the invention also relate to image forming units, e.g., for use in image forming apparatuses as described above.

Description

Imaging device and image-generating unit
Quoting alternately of related application
The application requires the right of priority for the Japanese patent application No. 2004-285191 that applies on September 29th, 2004 and 2004-285218 number.These priority applications are combined in herein by reference and in full.
Technical field
The image-generating unit that the utility model relates in general to imaging device and uses in this equipment.
Background technology
The known tandem imaging device that various use electrophotographies are arranged.Such imaging device comprises the Electrifier frame, photoreceptor corresponding to the toner color of yellow, magenta, cyan and black.Such as the imaging device processing element of Delevoping cartridge and charging device be arranged on usually be used for versicolor each Electrifier frame, photoreceptor around.Be transferred to and be embodied as picture on the paper by being formed on toner image on the Electrifier frame, photoreceptor by the toner of every kind of color.In this imaging device, the lid that can open is set at the top of the main casing of imaging device usually.By opening lid, the different parts such as Delevoping cartridge that are arranged in the imaging device can be replaced by new parts, maybe can remove at the esoteric paper jam phenomenon of main casing.In other imaging device structures, the drawer that wherein loads Delevoping cartridge can be set.Just can carry out the replacement of Delevoping cartridge by drawer being pulled out to preposition from main casing.
The utility model content
The image-generating unit that the purpose of this utility model provides a kind of imaging device and uses in this equipment, one of technical problem to be solved in the utility model is that image-generating unit can be integrally from the imaging device installation and removal, and two of technical problem to be solved in the utility model is can be independently and easily the parts in imaging device and the image-generating unit are changed and safeguarded.
Various aspects of the present utility model relate to imaging device (such as printer (for example laser printer, color printer or the like), duplicating machine, facsimile recorder, scanner, multi-function device and similar setting) and various element (such as image-generating unit) thereof.Imaging device according at least some examples of the present utility model comprises: (a) main casing; (b) be configured to the image-generating unit (optionally fully from the main casing dismounting) that can remove from main casing at first direction, wherein said image-generating unit comprises framework; (c) a plurality of boxes, each box comprise that at least one is used for the developing apparatus of Electrifier frame, photoreceptor separately.Described box can be configured to can be in second direction attached and dismounting with respect to the framework of image-generating unit, and described second direction tilts towards first direction.Other imaging devices according at least some aspects of the present utility model can comprise: (a) main casing; (b) radiative exposure device; (c) a plurality of boxes, each box comprise that at least one is used for the developing apparatus of Electrifier frame, photoreceptor separately, and each box is configured to can be in first direction attached and dismounting with respect to main casing; (d) be used for transmitting the recording medium transfer system of the recording medium adjacent with Electrifier frame, photoreceptor in second direction.Described first direction can tilt with respect to second direction, and at least a portion light path that is transmitted into the light of Electrifier frame, photoreceptor from exposure device can be basically parallel to first direction and extends (term " substantially parallel " comprises parallel in the context of this article).
Image-generating unit according at least some examples of the present utility model can comprise: (a) framework; (b) a plurality of boxes, wherein each box comprises at least one developing apparatus, and is configured to and can is attached to framework and dismantles from framework at first direction; (c) a plurality of Electrifier frame, photoreceptors, Electrifier frame, photoreceptor is corresponding to separately a box in a plurality of boxes.Described Electrifier frame, photoreceptor limits image transfer printing plane or direction (for example general plane or the direction that recording medium moves in the above when transferring images to the processing procedure of recording medium), and wherein said first direction tilts with respect to image transfer printing plane or direction.
According to imaging device provided by the utility model and the image-generating unit that in this equipment, uses, image-generating unit can be integrally from the imaging equipment body installation and removal, and the parts in imaging device and the image-generating unit can be independently and change easily and safeguard.
Description of drawings
To be described in more detail with reference to following accompanying drawing according to illustrative exemplary construction of the present utility model:
Fig. 1 is the side cross-sectional view as the schematic structure of the laser printer of imaging device that shows according to first example of the present utility model;
Fig. 2 is that the image-generating unit of the laser printer among Fig. 1 is shown the side cross-sectional view of pulling out from the main casing of laser printer;
Fig. 3 is the side cross-sectional view of the laser printer among Fig. 1, shows image-generating unit from the main casing separating process;
Fig. 4 A is to show the installation situation of Delevoping cartridge and the explanatory view of the relation between the acting force to 4C;
Fig. 5 is the side cross-sectional view of another instantiation procedure of separating from main casing according to the demonstration image-generating unit of laser printer of the present utility model;
Fig. 6 A is the side view of demonstration according to the illustrative example structure of the image-generating unit of another example of the present utility model to 6B;
Fig. 7 is the side cross-sectional view of pulling out image-generating unit according to the main casing from laser printer of example laser printer of the present utility model;
Fig. 8 is the positive sectional view of the example guiding device that can use in the different printer arrangements according to example of the present utility model;
Fig. 9 is the side cross-sectional view according to the example image-generating unit of another example of the present utility model;
Figure 10 is the side cross-sectional view according to another example image-generating unit of the present utility model;
Figure 11 and 12 is side cross-sectional view of other image-generating unit examples;
Figure 13 is the side cross-sectional view according to the example laser printer structure of another example of the present utility model;
Figure 14 is that the example image-generating unit of the laser printer among Figure 13 is shown the side cross-sectional view of pulling out from the main casing of laser printer;
Figure 15 is the side view of demonstration according to the schematic structure of the example laser printer structure of another example of the present utility model;
Figure 16 is that the image-generating unit of the laser printer among Figure 15 is shown the side cross-sectional view of pulling out from the main casing of laser printer;
Figure 17 is the side cross-sectional view of demonstration according to the schematic structure of the example laser printer structure of another example of the present utility model;
Figure 18 is that the image-generating unit of the laser printer among Figure 17 is shown the side cross-sectional view of pulling out from the main casing of laser printer;
Figure 19 is the side cross-sectional view of the example image-generating unit that just takes out from the main casing of laser printer structure;
Figure 20 is the side cross-sectional view of the image-generating unit of the example laser printer among Figure 17 from the laser printer of the main casing separation of laser printer;
Figure 21 is the side cross-sectional view of demonstration according to the schematic structure of the example laser printer of another example of the present utility model;
Figure 22 is that the loam cake of demonstration example printer arrangement of the laser printer among Figure 21 is in the side cross-sectional view of open site; With
Figure 23 is that the demonstration image-generating unit of example laser printer structure can be by the side cross-sectional view of open top vertical moving.
Embodiment
Below with reference to the accompanying drawings various illustrative example of the present utility model are described.In the following description, the various connections between the element in total are illustrated.The reader should be appreciated that these connections are general, unless specialize, connection can be direct or indirect, and this instructions is not limited in this on the one hand.
I. according to the describe, in general terms of the structure of at least some examples of the present utility model
Various aspects of the present utility model relate to imaging device (such as printer (for example laser printer, color printer or the like), duplicating machine, facsimile recorder, scanner, multi-function device etc. and various element thereof.Imaging device according at least some examples of the present utility model can comprise: (a) main casing; (b) be configured to the image-generating unit (optionally fully from the main casing dismounting) that can remove from main casing at first direction, wherein image-generating unit comprises framework; (c) a plurality of boxes, each box comprise that at least one is used for the developing apparatus of Electrifier frame, photoreceptor separately.Described box can be configured to can be in second direction attached and dismounting with respect to the framework of image-generating unit, and this second direction can be for example upwards and towards first direction tilt from first direction.Term used herein " inclination " is unless otherwise noted is meant to be in to be different from parallel or perpendicular to the direction of other direction.In at least some examples of the present utility model, the angle of inclination is in first direction and becomes 45 to spend to the scope of 90 degree angles, or even becomes 65 to spend to the scope of 90 degree angles with first direction.
Imaging device according at least some aspects of the present utility model can comprise: (a) shell; (b) exposure device of emission light; (c) numerous boxes, each box comprise that at least one is used for the developing apparatus of Electrifier frame, photoreceptor separately, and each box can be configured to can be on first direction the attached and dismounting with respect to shell; (d) be used on second direction transmitting the recording medium transfer system of the recording medium of contiguous Electrifier frame, photoreceptor.In this exemplary construction, if necessary, first direction can tilt with respect to second direction, and at least a portion light path that is transmitted into the light of Electrifier frame, photoreceptor from exposure device can be basically parallel to first direction and extend.If necessary, the orientation of first direction can be in respect to the angle in 45 ° to 90 ° scopes of second direction, even can be in respect to the angle in 65 ° to 90 ° scopes of second direction.If necessary, can comprise one or more in numerous boxes in the image-generating unit, and this image-generating unit can be formed at different directions and remove from the shell of imaging device, comprising the direction that is basically parallel to second direction or be basically perpendicular to the direction (term that uses " substantially parallel " comprises parallel, and " vertical substantially " comprises vertically) of second direction in context.
Further example of the present utility model relates to the component that uses in the imaging device of all imaging devices as described above.More particularly, some example at least of the present utility model relates to and being used as such as printer (for example, laser printer, color printer etc.), duplicating machine, facsimile recorder, scanner, the part of the imaging device of multi-function device or similar device is included in image-generating unit wherein.Image-generating unit according to some example at least of the present utility model can comprise: (a) framework; (b) numerous boxes, wherein each box comprises at least one developing apparatus and is configured to can be on first direction attached or dismantle from framework with framework; (c) numerous Electrifier frame, photoreceptors, separately a box in the corresponding numerous boxes of Electrifier frame, photoreceptor.Electrifier frame, photoreceptor can engage (make they also are removed with box when box is removed) with box, engages with framework (feasible when box is removed their maintenances be in the same place with box) and/or engage with other parts in the structure of whole imaging device and do not deviate from the utility model from framework from framework.Numerous Electrifier frame, photoreceptors can limit image transfer printing plane or direction (for example, recording medium moves in transferring images to the process of recording medium general plane or direction) thereon, and wherein first direction tilts with respect to image transfer printing plane or direction.If necessary, in some structure at least, the framework of image-generating unit can limit basically at least one groove that extends on the attached and/or disassembly direction at box, and wherein groove and the framework of box by separately engages.In some exemplary construction at least, first direction can be with respect to image transfer printing plane or direction with the angle tilt between 45 ° to 90 °, perhaps even with the angle tilt between 65 ° to 90 °.
Image-generating unit according to some example at least of the present utility model can have different further features and/or characteristic with imaging device.The feature that these are potential and the example of characteristic will be described in detail below.Certainly, when these features and characteristic existed in image-generating unit and/or imaging device, they can be comprised in many ways in each unit or the equipment by multiple different structure and/or different combinations and not deviate from the utility model.And, single image-generating unit or imaging device do not need to have all or even any one these specific feature or characteristics, it still can belong in the scope of the present utility model.
Image-generating unit according to some example at least of the present utility model can be equipped with handle portion.As a concrete example, handle portion can be arranged on first end of image-generating unit, and image-generating unit can be configured to separate with shell or dismantle from shell by carrying handle hand portion to small part upwards.In addition, handle portion can be used for for example image-generating unit being pulled out from the imaging device under it.
Can further comprise emission light (as laser) and light is sent to the exposure device of Electrifier frame, photoreceptor (for example, thereby on Electrifier frame, photoreceptor, form electrostatic latent image) according to the imaging device of some example at least of the present utility model.If necessary, according to some example at least of the present utility model, at least a portion of one or more light paths that is transmitted into the light of Electrifier frame, photoreceptor from exposure device can be extended (term that uses " substantially parallel " comprises parallel) along the substantially parallel direction of direction that is attached to image-generating unit with developing apparatus or separates from image-generating unit context.
Also can comprise according to the imaging device of some other example at least of the present utility model and to be used in the imaging device transmission or to transmit the travelling belt of recording medium (for example, it is transmitted by Electrifier frame, photoreceptor etc.).If necessary, image-generating unit can be configured to move with respect to travelling belt by shift-in or when shifting out shell when the imaging unit.
The additional features that exists in the imaging device according to some example at least of the present utility model comprises that providing of housing recording is provided coils and/or be configured to work as the discharge dish that is used for the receiving record media when (for example, recording medium is discharged from shell) finished in imaging.If present, provide dish to be installed in separably in the shell, and if necessary, it can be removed (pointing out that again the term that uses " substantially parallel " comprises parallel in context) along be basically parallel to the direction that image-generating unit pulled out from shell from shell.
Imaging device and/or image-generating unit according to some example at least of the present utility model may further include " prevention falling apparatus ".The function that stops falling apparatus can be to allow image-generating unit (for example to move to stop position, from shell extend to one or more Delevoping cartridges can be with image-generating unit attached and/or from the position of image-generating unit dismounting), when at this stop position, stop falling apparatus to stop image-generating unit to fall from shell.Stop falling apparatus further can be configured to optionally allow discharge image-generating unit (for example, can fully image-generating unit be removed) from shell.
As mentioned above, the image-generating unit according to some example at least of the present utility model further can comprise handle portion.For example in comprising the imaging device and/or image-generating unit that stops falling apparatus,, can realize needed other function when handle portion exists.For example, if necessary, handle portion can be configured to have from stoping falling apparatus to discharge the function (for example, can slave unit remove image-generating unit fully) of the mechanism of image-generating unit.As an example more specifically, in some structure, handle portion can comprise the first in command's member on first side that is arranged on the image-generating unit framework and be arranged on second side of framework second in command's member (for example, relative both sides at the central shaft that removes the direction extension along image-generating unit), this handle can discharge through moving and stop falling apparatus.As another example more specifically, if necessary, handle portion can and be mentioned between the position and move in the pulling position, be positioned at an end of image-generating unit at pulling position handle portion, be located in the image-generating unit pull-out direction than the position that is in when handle when spurring the position more near the center of gravity of framework mentioning the position handle portion.This variation of handling position can cause discharging the prevention falling apparatus.Yet as another example more specifically, in according to some exemplary construction at least of the present utility model, handle member can be included on the rotatable handle member, a detent can be set (for example contact and limit its rotation at predetermined restriction site with the handle member, when mention with the handle member imaging unit, can on the direction that detent is pressed the handle member, produce torque and do not consider the state (for example do not consider the number of box in the image-generating unit, do not consider the fill level of box etc.) of numerous boxes).The rotation of this handle member also can be used for discharging the prevention falling apparatus.
Imaging device according to other examples that also have of the present utility model can comprise that at least one is included in the lid member in the housing, is used for for example covering the opening of housing, and image-generating unit is moved into or shifts out housing by this opening.In some example at least, by downwards, for example the upper end of the general direction tilt cover member of being pulled out from housing to image-generating unit can be opened the lid member.If necessary, comprise in the structure of handle portion at image-generating unit, when the lid member is shown in an open position and image-generating unit when being removed (for example in the above describe stop position) from housing, handle portion can extend or be projected into and surpasses the end of covering member.
Image-generating unit according to some example at least of the present utility model further can comprise " prevention countermeasure set ".When the imaging unit is placed on certain surperficial going up, stop countermeasure set can be used to stop the numerous Electrifier frame, photoreceptors that are included in the image-generating unit to contact this surface.In some exemplary construction at least, stop countermeasure set to stop the plane for image-generating unit limit one, wherein numerous Electrifier frame, photoreceptors are positioned at the place that the framework middle distance stops the plane minor increment at least.As an example more specifically, stop countermeasure set can comprise that one or more frameworks from image-generating unit are projected into the position that for example exceeds Electrifier frame, photoreceptor or " foot section " of level.Stop countermeasure set can be used to stop being not intended between photosensitive drums and other element or the surface to contact, for example, stop damage or pollution, avoid polluting the outside surface of developer drum, or the like.
After providing these describe, in general terms, describe in detail more according to structure example of the present utility model below in conjunction with Fig. 1-2 3.The reader should be realized that following instantiation and describes and only form example of the present utility model, yet do not limit the utility model.
II. according to the detailed description of instantiation structure of the present utility model
Hereinafter will imaging device according to some example at least of the present utility model be described referring to figs. 1 to 4C.Though according to the illustrative example of imaging device of the present utility model show be printer mechanism (for example, laser printer, color printer, or the like), but those skilled in the art should be able to recognize various aspects of the present utility model also can be used to such as duplicating machine, facsimile recorder, scanner, multifunctional equipment and similarly other imaging device of device combine.As shown in Figure 1, the laser printer 1 of this example is so-called " directly tandem color laser printer ", it comprises corresponding four kinds of colors, be black, cyan, magenta and four yellow photosensitive drums 30, the toner image that forms on each photosensitive drums 30 in this printer directly is transferred on the recording medium.In main casing 2, the paper feed-in part 4 that provides as the paper 3 of recording medium is provided the laser printer structure 1 of this example, the image-generating unit 20 of imaging on the paper 3 that is provided, and the paper translator unit 35 that transmits paper 3 with respect to image-generating unit 20.In ensuing description, the right side among Fig. 1 is known as the front side of laser printer 1, and the left side among Fig. 1 is known as dorsal part or rear side, and distally among Fig. 1 and nearside are known as the right side and the left side of laser printer 1 respectively.
In the printer arrangement 1 of this example, the front portion of main casing 2 is equipped with can be with respect to the protecgulum 6 of main casing 2 opening and closing.The protecgulum 6 of this example can (for example around one or more axles, hinge or other structure) cover pivot rotation between position (Fig. 1) and the uncovering position (Fig. 2) around its lower end.Covering the position, as shown in Figure 1, protecgulum 6 extends and the front portion of covering main casing 2 in basic upright position.At uncovering position, as shown in Figure 2, protecgulum 6 extends (" basic horizontal " used comprises level) to the position of basic horizontal in context.By rotating protecgulum 6 forward and away from main casing 2 with away from covering the position pivot, protecgulum 6 is moved to uncovering position.When protecgulum 6 is positioned in uncovering position, image-generating unit 20 can be installed into main casing 2 and/or from main casing 2, removes (front portion that for example pulls to main casing 2).In this exemplary construction, when protecgulum 6 is positioned in when covering the position, the surface of protecgulum 6 upper ends with the essentially identical plane of the top surface of main casing 2 on extend (" the essentially identical plane " of using comprises identical plane) in context.
In the bottom of main casing 2, the paper feed-in part 4 of this exemplary construction 1 comprises that paper provides dish 7, and paper provides roller 8, separating pad 9, pick-up roller 10, a pair of paper scrap kicker cylinder 11 and a pair of registration rollers 12A and 12B.Paper provide dish 7 can be with the bottom of main casing 2 attached and dismounting.Paper provides roller 8 and separating pad 9 to be set at the top that paper provides the fore-end of dish 7.Pick-up roller 10 is set at the rear portion that paper provides roller 8.Paper scrap kicker cylinder 11 is set at the last front side that paper provides roller 8. Registration rollers 12A and 12B are set at the top of a pair of paper scrap kicker cylinder 11.
In this exemplary construction 1, paper provides dish 7 to have the shape of thin plate, wherein can layering hold paper 3.Provide the front end of dish 7 to comprise antetheca 13 at paper.When paper provided dish 7 to be attached on the main casing 2, antetheca 13 was positioned in the below of protecgulum 6.By along draw paper that the handle that forms on dish 7 the antetheca 13 is provided to the direction of printer 1 front portion, paper provides dish 7 to be pulled out from the front portion of main casing 2.Provide the inside of dish 7 at the paper of this exemplary construction, pressboard 7A is set in its bottom.Paper provides dish 7 and pressboard 7A can hold numerous paper 3.Pressboard 7A is supported on its rear end by pivotally, and the front portion of pressboard 7A is pushed ahead by spring (not illustrating in the drawings) simultaneously.Utilize this structure, being stacked on paper provides the paper 3 in the dish 7 to be held by pressboard 7A, and their front end is boosted.
Be loaded in uppermost paper 3 that paper provides a pile paper 3 of dish in 7 and under effect, press to pick-up roller 10 from the expulsive force of pressboard 7A.Along with the rotation of pick-up roller 10, uppermost paper 3 is transmitted to paper and provides between roller 8 and the separating pad 9.Then, when paper 3 is sandwiched in paper when providing between roller 8 and the separating pad 9, paper provides roller 8 by rotating ground uppermost paper 3 is separated from a pile paper 3 and providing.Separated paper makes that by a pair of paper scrap kicker cylinder 11 the paper scrap (if there is) that is adsorbed on the paper 3 is removed from it then.After this, paper 3 further is sent to a pair of registration rollers 12A and 12B.
The function of registration rollers 12A and 12B performance is equivalent to driven roller and driven voller respectively.This registration rollers 12A and 12B can correct the crooked (if there is) of paper 3 and provide path 14 that paper 3 is sent on the travelling belt (sheet-transport belt) 38 of paper translator unit 35 by paper.The arc paper transport path that forms in the framework 21 that paper in this exemplary construction provides path 14 to be included in image-generating unit 20.
Top in main casing 2 is provided with scanner part 18 (function is equivalent to exposure device).Scanner part 18 based on the surface of each photosensitive drums 30 of the data based toner color of predetermined picture in image-generating unit 20 by high-velocity scanning emission of lasering beam L.That is, in this exemplary construction 1, corresponding to four laser beam L of each color by from the diagonal angle, bottom of scanner part 18 down to photosensitive drums 30 emissions of their correspondences.The light path of laser beam L is represented with dot-and-dash line in Fig. 1.Launching and/or (to small part) transmission each other abreast from scanner part 18 according to the laser beam L in some exemplary construction at least of the present utility model, and/or the distance with rule is spaced apart on fore-and-aft direction.Can use the scanning system 18 of any needs and not deviate from the utility model, comprise known and in the scanning system of the routine of using in the art.
In main casing 2 inside of this exemplary construction 1, unit accommodating section is divided 19 belows that are set at scanner part 18.Can be drawn to the front portion of printer 1 and can be accommodated in unit accommodating section and be divided in 19 with main casing 2 attached image-generating units 20 with dismounting (separation).The image-generating unit 20 of this exemplary construction comprises the framework 21 that is used to support photosensitive drums 30 (function is equivalent to image bearing member), grid-control formula corona charging device 31 (function is equivalent to charging device), four Delevoping cartridges 22 (function is equivalent to developing apparatus) and cleaning brush 33.
In the image-generating unit structure 20 of this example, four Delevoping cartridges 22 by independently with the framework 21 attached and dismountings of image-generating unit 20, and corresponding to separately black, cyan, magenta and yellow the setting.Because the structure of all these illustrative Delevoping cartridges 22 is all identical, therefore the description of being done hereinafter will be about one of them Delevoping cartridge 22.Delevoping cartridge 22 comprises the box-like housing 23 with open bottom structure.Has the toner storage chamber 24 that is full of toner on the top of housing 23.Stirrer (not illustrating in the drawings) can be set in the toner storage chamber 24.When stirrer utilized the energy rotation of motor (not illustrating in the drawings) input, the toner that is stored in the toner storage chamber 24 was stirred.Below toner storage chamber 24, Delevoping cartridge 22 comprises that further toner provides roller 25, developer roll 26 and layer thickness adjustment sheet 27.
In the Delevoping cartridge structure 22 of this example, toner provides roller 25 rotatably to be supported by housing 23, and comprises the metal roller shaft that the roll body made by conductive foams partly covers.The energy rotation that toner provides roller 25 to utilize motor (not illustrating in the drawings) input.
Developer roll 26 is set at the position of diagonal angle after down that provides roller 25 with respect to toner, is provided the such mode of roller 25 (for example, make two rollers 25 and 26 pressurizing and deformation each other) to locate with the contact toner.For example, when Delevoping cartridge 22 and framework 21 were attached, developer roll 26 was practised physiognomy with their light-sensitive rollers 30 separately and is contacted over the ground at least.The developer roll 26 of this exemplary construction comprises the metal roller shaft that the roll body made by conductive polyurethane rubber or conductive silicon rubber (for example, by containing the conductor that carbon particle is for example made) partly covers.The surface of the roll body part of developer roll 26 can apply urethane rubber or the silicon rubber that one deck optionally comprises fluorine.In developing process, the development bias voltage can be applied on the developer roll 26.Developer roll 26 can utilize the energy rotation of motor (not illustrating in the drawings) input.
The layer thickness adjustment sheet 27 of this exemplary construction for example comprises the lamellar body of being made by the metal leaf spring member and has the roughly pressures partially of semicircular cross-sectional shape.Pressures partially is set at the free end of lamellar body, is made by electrically insulating silicone rubber.Layer thickness adjustment sheet 27 is supported on developer roll 26 tops by housing 23, and presses developer roll 26 under the effect of lamellar body elastic force.
Provide the rotation of roller 25 with pigment, the toner of discharging from toner storage chamber 24 is provided for developer roll 26.Toner can for example provide the friction between roller 25 and the developer roll 26 to be filled with positive electricity by toner.At least some toners that offer developer roll 26 move between the pressures partially of layer thickness adjustment sheet 27 and developer roll 26 then.By this way, along with the rotation of developer roll 26, toner is used as the thickness that the thin layer that is carried on the developer roll 26 is adjusted to regulation equably.
In the image-generating unit structure 20 of this example, the photo-sensitive cell formation has the photosensitive drums 30 of columniform bulging body 30A and metal drum axle 30B.Drum body 30A can so form, and its outermost layer is the photographic layer of the positive charge made by for example polycarbonate.Can use the type of any photosensitive material that needs type and/or photosensitive drums and not deviate from the utility model, comprise known and in the photosensitive material and/or the photosensitive drums of the routine of using in the art.Drum axle 30B can be set on the central shaft of bulging body 30A, and can be along the longitudinal extension of drum body 30A.Drum axle 30B is supported by framework 21, and drum body 30A is rotatably supported by drum axle 30B.Utilize this structure, photosensitive drums 30 can be around drum axle 30B rotation in framework 21.Photosensitive drums 30 can be utilized the energy rotation of motor (not illustrating in the drawings) input.
In the printer arrangement 1 of this example, the distance that grid-control formula corona charging device 31 is configured to keep stipulating does not contact it in the face of photosensitive drums 30 with photosensitive drums 30.Grid-control formula corona charging device 31 can be positioned in for example with respect to position, back on the diagonal angle of photosensitive drums 30.Grid-control formula corona charging device 31 is by producing the surface charging that corona discharge is given photosensitive drums 30 equably from the discharge silk such as tungsten filament.Can use the charging device of any kind and not deviate from the utility model, comprise the charging device of routine known and that in this technical field, use.
Cleaning brush 33 also can be set and be configured to from the rear portion to practise physiognomy and contact over the ground with photosensitive drums 30.
When imaging unit 20 is accommodated in unit accommodating section when dividing in 19, the paper translator unit 35 of the printer arrangement 1 of this example is configured to be positioned at the below of image-generating unit 20.The paper translator unit 35 of this example comprises a pair of band backing roll 36 and 37 and travelling belt 38.This band backing roll 36 and 37 is spaced from each other and extension in parallel to each other along fore-and-aft direction.Travelling belt 38 is provided in this to running between the band backing roll 36 and 37.Along with back band backing roll 36 is used to rotate from the energy of motor, travelling belt 38 pitch of the laps around band backing roll 36 and 37 moves.In endless conveyor belt 38 inside, for example at fore-and-aft direction with four transfer rolls 39 of arranged at regular intervals, transfer roll 39 is relative with the photosensitive drums 30 of corresponding imaging units 20, simultaneously travelling belt 38 is sandwiched between each photosensitive drums 30 and its corresponding transfer roll 39.Clearer 40 is set below travelling belt 38, be used to remove be adsorbed on the travelling belt 38 remnants' or toner at random.The paper 3 of discharging from a pair of registration rollers 12A and 12B provides path 14 by paper, contact then front end on the travelling belt 38 near.Paper 3 can for example be attracted to the upper surface of travelling belt 38 under the effect of static, and can be sent to the rear portion of printer 1 along with the circulation of travelling belt 38.
In this exemplary construction 1, photosensitive drums 30 is along with the rotation of photosensitive drums 30 is filled with positive electricity equably by grid-control formula corona charging device 31, and the surface is exposed under scanner part 18 emitted laser bundle L then.By this way, form with the surface of the corresponding electrostatic latent image of image that will on paper 3, form in photosensitive drums 30.
Along with the rotation of developer roll 26, the toner that is carried on positively charged on the developer roll 26 contacts with photosensitive drums 30, and is provided for the electrostatic latent image that forms on photosensitive drums 30 surfaces.Toner be provided for photosensitive drums 30 before evenly filled the exposed portion on the surface of positive electricity, toner be adsorbed onto drum 30 owing to be subjected to the zone that the exposure of laser beam L makes that current potential reduces.As a result, the electrostatic latent image that forms on photosensitive drums 30 becomes visual image, and therefore reversal development has taken place.By this way, toner image forms on the surface of photosensitive drums 30.
In the printer arrangement 1 of this example, when paper 3 during by the transfer position between photosensitive drums 30 and the transfer roll 39, the transfer bias that utilization is applied on the transfer roll 39 is transferred on the recording medium (for example paper 3) toner image that is carried on the photosensitive drums 30.The paper 3 that is transferred toner image then is sent to photographic fixing part 42.
In the printer arrangement 1 of this example, photographic fixing part 42 is set at the rear portion of the paper translator unit 35 in the main casing 2, comprises warm-up mill 43 respect to one another and pressure roll 44.In photographic fixing part 42, the toner that is transferred on the paper 3 is fixed thereon by heat and/or pressure.In this exemplary construction 1, the paper 3 of having fixed toner thereon is sent to a pair of distributing roller 46 of the upper position that is arranged on main casing 2 then by a pair of transfer roller 45.This transfer roller 45 is set at respect to position, back on the diagonal angle of photographic fixing part 42.For example also can be equipped with paper discharge dish 47, perhaps form the part at the top of this printer main casing 2 at the top of printer main casing 2.The part that comprises basic horizontal in the front side of the paper discharge dish 47 of this exemplary construction comprises downward-sloping part at its rear side.The sloping portion of paper discharge dish 47 is downward-sloping towards the rear portion.After forming on the paper 3, the paper 3 that is discharged from roller 46 discharges is stacked on the paper discharge dish 47 at image.
Next with the structure of more detailed description image-generating unit 20.As shown in Figure 1, the framework 21 of image-generating unit 20 has the narrow box-like shape in the fore-and-aft direction prolongation of printer 1.Front end at framework 21 comprises antetheca 49.In framework 21, four partition walls 50 are arranged in antetheca 49 back along the even compartment of terrain of the fore-and-aft direction of printer 1.Box mounting portion 51 is set between each relative partition wall 50 in the framework 21 and between antetheca 49 and the partition wall 50 relative with antetheca 49.Box mounting portion 51 upward openings, and Delevoping cartridge 22 is in each box mounting portion 51 and framework 21 attached or dismountings from framework 21.The front surface 50A slight inclination of each partition wall 50 makes its upper end turn forward with this.The angle that the rear surface 50B of each partition wall 50 tilts turns forward its upper end greater than front surface 50A.The rear surface 49A of antetheca 49 makes its upper end turn forward with the angle tilt identical with the rear surface 50B of partition wall 50 with this.
In Delevoping cartridge 22 is installed in state on separately the box mounting portion 51, the housing 23 of Delevoping cartridge 22 is positioned such that their rear wall extends abreast with the relative front surface 50A of partition wall 50, and their antetheca extends abreast with the relative rear surface 50B of partition wall 50 or the relative rear surface 49A of antetheca 49.Housing wall 23 also can separate for example preset distance with the surperficial 50A of partition wall and the rear surface 49A of 50B and/or antetheca 49, as shown in Figure 1.In order to guide Delevoping cartridge 22 with respect to the installation of framework 21 with remove, on the inwall of each box mounting portion 51, can be equipped with guide rail (not shown in Figure 1).Correspondingly, by this way, when Delevoping cartridge 22 and box mounting portion 50 during attached or dismounting, Delevoping cartridge 22 can be by the direction guiding along the rear surface 49A of the rear surface 50B of partition wall 50 or antetheca 49.In other words, in the structure of the printer 1 of some example at least, Delevoping cartridge 22 remove direction can tilt to the pull-out direction (in Fig. 2, illustrating) of image-generating unit 20 (towards the top) with outline line.And, in order in box mounting portion 51, Delevoping cartridge 22 at least a portion to be kept in place, on the inwall of each box mounting portion 51, can be equipped with engagement device (not illustrating in the drawings).When the Delevoping cartridge 22 of this exemplary construction 1 was installed in the box mounting portion 51 and arrives suitable installation site, engagement device can engage (for example, engage by spring ground, be locked together on the appropriate location, or the like) with Delevoping cartridge 22.When Delevoping cartridge 22 by when the installation site removes, engagement device can break away from from Delevoping cartridge 22.
In this printer arrangement 1, photosensitive drums 30 is maintained at the bottom of each box mounting portion 51 separately, make when Delevoping cartridge 22 is installed on the framework 21, photosensitive drums 30 be positioned in the rear portion that is arranged on each photographic department 30 partition wall 50 near.The bottom of photosensitive drums 30 can be outstanding slightly downwards from the basal surface 21A of framework 21.It is relative with corresponding transfer roll 39 that photosensitive drums 30 is configured to, and travelling belt 38 is sandwiched between photosensitive drums 30 and the transfer roll 39 simultaneously.In the image-generating unit structure 20 of this example, in each partition wall 50 inside of its underpart, grid-control formula corona charging device 31 and cleaning brush 33 are set at around the photosensitive drums 30.
In the printer organization 1 of this example, framework 21 for example forms an outshot 52 along the whole lower front end of antetheca 49.This outshot 52 is outstanding downwards from the basal surface 21A of framework 21.In this exemplary construction, the rear surface that a registration rollers among a pair of registration rollers 12A and the 12B (for example, driven voller 12B) is highlighted part 52 keeps.Whole pair of guide rails 14A and the 14B of being equipped with in the bottom of outshot 52.This provides the paper of the basic arc that is bent upwards that path 14 is provided to the space between guide rail 14A, the 14B, as illustrated in fig. 1 and 2.When by paper being provided path 14 by this during to guide rail 14A and 14B guiding by this recording medium (for example, paper 3) that registration rollers 12A, 12B are transmitted, paper 3 is provided on the travelling belt 38 with this.Two rear foot parts 53 are set at the posterior end of the left and right sides sidewall 21B of framework 21, make its basal surface 21A from framework 21 outstanding downwards.By this way, when the image-generating unit 20 of this exemplary construction as desktop or installed surface T (for example is placed on, see Fig. 3) flat surfaces on the time, rear foot part 53 and outshot 52 are (for example, function is equivalent to stop countermeasure set) contact with this surface, make the basal surface 21A of framework 21 remain on and mention and the position of separating with this surface.By this way, photosensitive drums 30 be maintained at should the surface do not contact and/or otherwise (for example can be subjected on the level that is raised of this surface disturbance, therefore stop damage, stop the fragment contact drum, and/or stop toner to be deposited on the following surface) drum.Stop countermeasure set (for example outshot 52 and foot section 53) photosensitive drums 53 surfaces can be remained on and any neededly mention level or apart from last and do not deviate from the utility model with respect to what stop the surface.
According to the utility model in some structure at least, rail shape guiding device (not illustrating in the drawings) can be set between image-generating unit 20 and the main casing 2 (for example, with known and present technique field or field of furniture in the guide rail of drawer of the routine used similar).Image-generating unit 20 can slide on the fore-and-aft direction of printer 1 along guiding device.Keep excrescence 55 can be set on each sidewall 21B of framework 21 for example, make it possible to project upwards from the last rear end of each sidewall 21B.Stop drop section area 56 can be set at unit accommodating section in the main casing 2 and divide on 19 the inwall, make it possible under each side direction of inwall front end outstanding, for example, as shown in Figure 2.In this exemplary construction, stop drop section area 56 to keep excrescence 55 to engage, and lump together function with these structures and be equivalent to " prevention falling apparatus " with each of the framework 21 of image-generating unit 20.When imaging unit 20 is moved to off-position from attachment location (as shown in Figure 1) and put (as shown in Figure 2), keep excrescence 55 to contact and engage, thereby stoped the whereabouts of image-generating unit 20 from main casing 2 with the rear surface of prevention drop section area 56.The off-position that draws in this example device is put, and framework 21 can be downward-sloping under the effect of himself gravity, makes its front be positioned on the level a little less than rear end side.Like this, keep excrescence 55 and stop drop section area 56 to be maintained at engagement state, as shown in Figure 2.In addition, when imaging unit 20 is positioned in when drawing off-position to put, the top of framework 21 is exposed, and makes Delevoping cartridge 22 can be attached to the framework 21 of image-generating unit 20 or removes from the framework 21 of image-generating unit 20.Further, put drawing off-position, the front end of framework 21 (for example, outshot 52) more outwards or is forward given prominence to than the front end (top in this example) of protecgulum 6 (being positioned in the uncovering position that rotates), makes the user can easily operate image-generating unit 20.
The handle member 58 of basic C shape is attached on the framework 21 of image-generating unit 20 in this exemplary construction, comes by this way across framework 21.Handle member 58 is included in handle portion 58A and a pair of arm portion 58B that extends parallel to each other along fore-and-aft direction from each end of handle portion 58A that left and right directions extends.Each arm portion 58B is displaced to handle portion 58A one side slightly in the rear end from it position is attached to the outstanding shaft portion 59 from each sidewall 21B of framework 21.Handle member 58 can be installed by this way, makes it possible to pivotally rotate around shaft portion 59.In this instance frames structure 21, shaft portion 59 is set at each side of framework 21, is moved to the rear portion of framework 21 and near the position of the coboundary of framework 21 from its centre position along fore-and-aft direction.Handle member 58 can and be mentioned between the (see figure 3) of position and pivotally rotate in pulling position (see figure 2), wherein outstanding than the forearm 49 of framework 21 in arm portion 58B basic horizontal extension of pulling position and handle portion 58A, be inclined upwardly mentioning position arm portion 58B, handle portion 58A be positioned in the top of framework 21 and when shank portion 58 is positioned in the pull-out location on fore-and-aft direction more near the position in the centre position (for example, the center of gravity of more close framework 21 on fore-and-aft direction) of framework 21.In this exemplary construction, detent 60 be set at each shaft portion 59 below, outstanding with this from each sidewall 21B of framework 21.When handle member 58 is positioned in when mentioning the position, the rear end part of arm portion 58B (part that exists later at shaft portion 59) contacts its detent 60 separately, make handle member 58 be braked device 60 restrictions along the rotation of the direction that handle portion 58A is moved to the direction in contrast to the pull-out location (for example, the counter clockwise direction in Fig. 3).Therefore, when handle member 58 is positioned in when mentioning position (and be braked device 60 stop inordinate rotation), the user can mention image-generating unit 20 by holding handle portion 58A.Framework 21 can be designed to when imaging unit 20 is raised, (more detailed description will be done in the back), no matter whether (for example exist, installation situation) Delevoping cartridge 22 (for example, no matter be attached to the quantity of the Delevoping cartridge 22 on the framework 21) or no matter the toner quantity that is comprised in the different Delevoping cartridges 22 in framework 21 all produces torque on the direction that detent 60 is pressed handle member 58.
For image-generating unit 20 is pulled out 2 from state shown in Figure 1 from main casing, at first the user opens protecgulum 6, and his/her finger is placed on the handle portion 58A of the handle member 58 that is positioned at the pulling position, then imaging device 20 is pulled out along direction forward.
When imaging unit 20 arrives when drawing off-position to put, as shown in Figure 2, keep excrescence 55 to contact and engage with separately prevention drop section area 56, make image-generating unit 20 be stopped in and draw off-position to put, thereby stoped image-generating unit 20 from main casing 2, to fall.As mentioned above, when imaging unit 20 is pulled to when drawing off-position to put, if necessary or desired, Delevoping cartridge 22 can be with a new replacement.For example by drawing Delevoping cartridge 22 forward and upwards with respect to framework 21 diagonal angles, Delevoping cartridge 22 can remove or dismantle from framework 22, for example pushes away Delevoping cartridge 22 downwards along remove the direction diagonal angle in contrast to box, can make Delevoping cartridge 22 and framework 21 attached.Therefore, compare with respect to the attached situation with dismounting of framework in vertical direction with Delevoping cartridge, operability can be modified when changing Delevoping cartridge.In addition, as mentioned above, in this exemplary construction, framework 21 comprises that paper at least provides the part in path 14.Utilize this exemplary construction, when providing path 14 by paper, paper 3 taking place under the paper stopping state, because paper 3 quilts that framework 21 stopped up when being pulled to the front portion and framework 21 together move forward and expose, therefore the paper 3 that stops up can be eliminated at an easy rate.In addition, when imaging unit 20 is positioned in when drawing off-position to put, paper provides the front end of the front portion basically in path 14 than protecgulum 6 (for example top) more outstanding from shell.Therefore, provide paper 3 blocked in the path 14 further easily therefrom to be removed at paper and can not be subjected to covering 6 interference.
In the printer organization 1 of this example, in order to separate from main casing 2 or dismounting image-generating unit 20, at first the user forwards the handle portion 58A of handle member 58 to and mentions position (if necessary) from the pulling position.When the position is mentioned in 58 arrival of handle member, detent 60 contact arm portion 58B separately, the further rotation of restriction handle member 58.Then, when the user attempted from the further swing handle part of this state 58A, as shown in Figure 3, framework 21 was tilted and makes that its front is mentioned slightly, and the lower limb around rear end side rotates simultaneously.Along with this is mentioned or tilts, keep excrescence 55 to be moved down by diagonal angle backwards, thereby with stop drop section area 56 to be disengaged and separate.
At this state, when the user further pulls into picture during unit 20 to the front portion of printer 1 when holding handle portion 58A, the rear end of framework 21 is divided 19 from the unit accommodating section of main casing 2 and is shifted out, and the user can mention image-generating unit 20 with its separation.As mentioned above, handle portion 58A can spur the position and mention between the position and move at an easy rate, by this way, the user can carry out reposefully from image-generating unit 20 being pulled out shell 2 does not need to change his grip position on handle portion 58A to mentioning image-generating unit with making it break away from the sequence of operations of shell 2.
When in the above described manner when holding handle portion 58A image-generating unit 20 mentioned, no matter in image-generating unit 20, be attached to the quantity of the Delevoping cartridge 22 on the box mounting portion 51, always torque is producing on detent 60 presses the direction of handle member 58 between framework 21 and the handle member 58.For example, as shown in Figure 4, image-generating unit 20 is raised when four Delevoping cartridges 22 that are full of toner are attached on the framework 21, and the center of gravity of framework 21 (center of gravity of the member in image-generating unit 20 beyond the handle member 58 is represented with the arrow of finger downwards in Fig. 4 A) remains close to the center of framework 21 on fore-and-aft direction.In addition, because the shaft portion 59 of handle member 58 is set at the position after the center of gravity of framework 21, direction (for example clockwise rotating the direction of framework 21 in Fig. 4 A) the generation torque of pressing handle member 58 between framework 21 and handle member 58 along detent 60.Like this, when being mentioned by handle member 58, framework 21 is maintained at the attitude of basic horizontal.Shown in Fig. 4 B, when three Delevoping cartridges 22 be attached on the framework 21 image-generating unit 20 (for example, backmost the Delevoping cartridge 22 of position is removed from framework 21) when being raised, the center of gravity of framework 21 is moved forward a little by the state from Fig. 4 A, shown in the arrow that refers to downwards among Fig. 4 B.But, the direction generation torque of between framework 21 and handle member 58, pressing handle member 58 along detent 60, this torque remains on framework 21 attitude of basic horizontal.Shown in Fig. 4 C, handle member 58 further can be oriented to like this, even image-generating unit 20 is raised when a Delevoping cartridge 22 is attached at rearmost position and other three Delevoping cartridges 22 and is removed from framework 21, (for example, the center of gravity of framework 21 is moved backward to the state of Fig. 4 C by the state from Fig. 4 A), the center of gravity of framework 21 still can be maintained at the front of shaft portion 59 positions, shown in the arrow that refers to downwards among Fig. 4 C.Therefore, the direction of the torque that produces in the situation shown in Fig. 4 C is identical with the above-mentioned torque direction that produces in the situation shown in Fig. 4 A and the 4B, makes that like this framework 21 can be maintained at the attitude of basic horizontal.As mentioned above, even when the quantity of the Delevoping cartridge 22 on being attached at framework 21 and/or position change, the direction of torque can not be changed yet, make framework 21 stably to be mentioned with this by handle member 58, and can stop Delevoping cartridge 22 from framework 21, fall (for example, because the gravity of uneven distribution with framework 21 reversings).Even when the weight of Delevoping cartridge 22 being changed owing to the variation of the toner amount of retaining in the Delevoping cartridge 22, the direction of torque also always remains unchanged, make framework 21 to mention with this, and Delevoping cartridge 22 can be owing to the reversing of framework 21 is fallen from framework 21 with being stabilized.
As mentioned above, image-generating unit 20 can be separated from laser printer 1 and is carried to diverse location, for example is placed on the position with main casing 2 certain distances of laser printer 1.When imaging unit 20 is placed on certain surface when going up (desktop as shown in Figure 3 or installed surface T), rear foot part 53 contacts this surface with outshot 52, photosensitive drums 30 be maintained at this surface isolation mention position (shown in the two point dotted line among Fig. 3).Utilize this structure, can avoid contacting and/or interference between photosensitive drums 30 and this surface, for example, make carry out maintenance, part transposing, need not consider when stopping up similar operations such as detections owing to other surfaces or member between contact and/or disturb damage to photosensitive drums 30.Equally, when imaging unit 20 separated with main casing 2, the front portion of main casing 2 also can stay open, and for example, made the removing can carry out the paper obstruction in main casing 2, repairing and/or such as maintenances such as part transposings.As an example more specifically, in this illustrative exemplary construction, when imaging unit 20 separates with main casing 2, image-generating unit 20 (comprising photosensitive drums 30 in this exemplary construction) can separate with the travelling belt 38 that transmits paper 3, makes the removing of paper obstruction and/or the transposing of travelling belt 38 to carry out easily with this.When the photosensitive drums 30 of imaging unit 20 during by a new replacement, if necessary, whole framework 21 can be by a new replacement.Perhaps, as the description of back, can be aligned to framework 21 and/or Delevoping cartridge 22 is attached separably and dismounting such as the different parts of photosensitive drums 30 and grid-control formula corona charging device 31 grades in conjunction with other illustrative example.By this way, each in these parts can time of any appropriate independently by new replacement, and do not need to rely on replacement time of other parts.
Be used to stop image-generating unit 20 to be configured such that when imaging unit 20 quilts are stopped in when draw the front portion of printer arrangement 1 and to draw off-position to put from the prevention falling apparatus that draws off-position to deposit to fall of main casing 2 (for example, keep excrescence 55 and stop drop section area 56).Utilize this device and these structures, image-generating unit 20 is prevented from falling from main casing 2.Therefore, image-generating unit 20 unexpectedly with from main casing 2, separate with not needing after, the user does not need to spend excessive power and just image-generating unit 20 can be put back in the main casing 2.Equally, also can avoid image-generating unit 20 or the parts that wherein comprise are caused damage by use stoping falling apparatus.
In conjunction with the exemplary construction of explaining among Fig. 5 to 6B, as be described in more detail below, handle portion (for example, 58A) also can be used as other function.For example, if necessary, according to some example at least of the present utility model, handle portion 58A can be as the release portion that discharges the maintenance effect that stops falling apparatus, for example, can carry out image-generating unit 20 and the disengaging that stops falling apparatus (and therefore image-generating unit 20 separating) so very reposefully from printer 1.
Equally, if necessary, the pull-out direction of image-generating unit 20 and paper provide the pull-out direction of dish 7 also can be identical, can fill laser printer 1 at an easy rate like this, and the volume of very big clearance spaces is arranged around not needing.And these characteristics can more easily move whole printer 1, and one or more paper provides dish 7 and/or image-generating unit 20 can not fall or move.
And, if necessary, according to some exemplary construction at least of the present utility model, Delevoping cartridge 22 (for example, function is equivalent to developing apparatus) can be the parts that separate fully with photosensitive drums 30, make like this and have only the Delevoping cartridge need be by new replacement (for example, when toner reduces) in the time of appointment.Photosensitive drums 30 can be independent of and/or be uncorrelated in the use of each Delevoping cartridge 22, condition and/or transposing and continue to use.
A variation example of the example printer arrangement 1 of Fig. 1 to 4C will be described with reference to figure 5.Change in the example at this, handle member 62 comprises the arm portion 58B that is equipped with extension 62A, and this extension 62A extends from the rear end of arm portion 58B.In this structure 1, do not resemble to be provided with on the sidewall 21B of framework that exemplary construction is shown in 21 of Fig. 1 to 4C and keep excrescence 55, but will keep excrescence 63 (function is equivalent to stop the part of falling apparatus) to be set to the part of the extension 62A of handle member 62.As shown in Figure 5, this maintenance excrescence 63 is designed to, and when handle member 62 is positioned in the pull-out location, keeps excrescence 63 to project upwards and engage with the prevention drop section area 56 of shell 2 from extension 62A.
In order to pull out the image-generating unit 20A of this this exemplary construction from the attachment location of main casing 2, at first, the user holds the handle portion 58A of the handle member 62 that is positioned at the pull-out location, and 20A draws to the front portion with image-generating unit.When 20A arrival in imaging unit draws off-position to put, keep excrescence 63 to contact and engage with the prevention drop section area 56 of main casing 2, make image-generating unit 20A can not be pulled to front portion (seeing the handle member 62 that the two point dotted line is represented among Fig. 5) further like this.At this state, when handle portion 58A moves up, keep excrescence 63 to move down and break away from (see solid line is represented among Fig. 5 shank portion 62) with stoping drop section area 56.Then, when handle member 62 is positioned at when mentioning position (position that the arm portion 58B of handle member 62 engages with braking element 60), image-generating unit 20 can be raised and separate with main casing 2.Utilize this exemplary construction, can obtain generally and the identical effect of the resulting effect of the exemplary construction of Fig. 1 to 4C.
With reference to figure 6A and 6B, another example of image-generating unit handle member will be described below.In the following description, be present in above the identical parts in addition of parts in describing represent with same reference numerals, will be omitted its detailed explanation.Will describe as following, in this exemplary construction, movably handle portion (for example handle portion 66A) also is used as release portion in order to discharge the maintenance effect that stops falling apparatus, makes the disengaging of prevention falling apparatus and the carrying of image-generating unit 64 to carry out reposefully.
This example image-generating unit 64 is equipped with the arm member 66 (having only an arm member 66 to be presented among Fig. 6 A and the 6B) of the left and right sides sidewall 65A of the framework 65 that is attached to image-generating unit 64.These arm members 66 extend upward in front and back substantially.This can be made their front end be supported on the last front end of the sidewall 65A of framework 65 by attached rotationally to arm member 66, and makes that they are movably between locked position and unlocked position.At locked position, as shown in Figure 6A, arm member 66 extends on horizontal direction.At unlocked position, shown in Fig. 6 B, arm member 66 is tilted a little, makes their rear end descend slightly.Arm member 66 in this exemplary construction comprises from its maintenance excrescence 67 that projects upwards in the rear end of the position of framework 65 rear ends (function is equivalent to part and stops falling apparatus).When arm member 66 is positioned in locked position, keep excrescence 67 to be oriented to engage, as shown in Figure 6A with the rear surface of the prevention drop section area 65 of main casing 2.When arm member 66 was positioned in unlocked position, this descended a little to arm member 66, made to keep excrescence 67 to be released with stoping engaging between the drop section area 56.Be included near the spring member 68 the rear end part of image-generating unit 64 at each sidewall 65A of this exemplary construction middle frame 65.Spring member 68 can make progress pusher arm member 66 with its biasing and hold it in locked position.In this exemplary construction, each arm member 66 is equipped with movable grip part 66A at the basic center section of its fore-and-aft direction.Movable grip part 66A is outwards outstanding with respect to framework 21.In addition, the fixed handle part 69 that becomes basic C shape on the xsect be set at each movable grip part 66A below, make its each sidewall 65A outstanding from framework 65.The two couples of movable grip part 66A and fixed handle part 69 are configured to the central shaft symmetry of the framework 65 that extends with respect to the pull-out direction along framework.
When imaging unit 64 was moved to off-position from main casing 2 and put, as shown in Figure 6A, the maintenance excrescence 67 of arm member 66 contacted and engages with the prevention drop section area 56 of main casing 2, stops image-generating unit 64 to fall from main casing 2 like this.For image-generating unit 64 is separated fully with main casing 2, as shown in Fig. 6 B, the user catches the two couples of movable grip part 66A and the fixed handle part 69 that is arranged on image-generating unit 64 both sides from above with his/her hand, and tightly pinching handle portion 66A and 69,66A moves to fixed handle part 69 with the movable grip part.By operation like this, arm member 66 is pivotally lowered into unlocked position from locked position, makes to keep excrescence 67 to be released with stoping engaging between the drop section area 56.At this state, when catching movable grip part and fixed handle part 66A and 69 respectively, the user further image-generating unit 64 is drawn to the front portion, and then image-generating unit 64 can separate fully with main casing 2.
Example structure according to this explanation, this is equivalent to the movable grip part 66A of the handle portion that is used to mention and the both sides that fixed handle part 69 is set at framework 65 to function, make the both sides of the central shaft that its pull-out direction along framework 65 that is set at framework 65 extends.Utilize this structure, the user can hold image-generating unit 64 securely with his/her hand.If necessary, another handle portion can be set at for example front portion of image-generating unit, is used as the handle that for example is used for pulling into from shell 2 the picture unit.
With reference to figure 7 and 8, will describe below according to another exemplary construction of the present utility model.Again, the in addition parts identical with above-described each structure are denoted by like references, and will be omitted the more detailed description of these parts.
As shown in Figure 7, on its antetheca 49, be equipped with the handle portion 72 of indent formula at the image-generating unit 70 that uses on laser printer 1A or other imaging device, play structure and arrange when imaging unit 70 is drawn forward and/or removes, being used to grasping by the user.The guiding device that guiding image-generating unit 70 moves is set between image-generating unit 70 and the main casing 2.Fig. 8 is the positive sectional view of laser printer 1A of explaining the various piece of guiding device at least.In Fig. 8, the nearside of this figure is called the front portion of laser printer 1A, and the distally of this figure is called as back or the rear portion of laser printer 1A, and the right side of this figure and left side are hereinafter referred to as right side or the left side of laser printer 1A.As shown in Figure 8, each sidewall 71A of framework 71 is equipped with a pair of guide rail 72A and the 72B that extends at fore-and-aft direction.Guide rail 72A and 72B the top and bottom level from the basal part of framework 71 respectively are outwards outstanding.The unit accommodating section of main casing 2 divides 19 the right side and left inwall to be equipped with the guide recess 73 that guide rail 72A and 72B engage.Guide recess 73 divides 19 inwall to extend along fore-and-aft direction in unit accommodating section.By engaging right and left rail 72A and 72B in each guide recess 73, framework 71 divides in 19 in unit accommodating section and is guided slidably along fore-and-aft direction.In the exemplary construction of this explanation, keep excrescence 55 to be arranged on the last rear end of upper rail 72A, stop drop section area 56 to be arranged on the front end of guide recess 73.
In order to pull out image-generating unit 70 from main casing 2, the user catches handle portion 72, and image-generating unit 70 is drawn to the front portion of printer 1A.When 70 arrival of imaging unit draw off-position to put, as shown in Figure 7, keep excrescence 55 to contact and engage with each prevention drop section area 56 of main casing 2, stop image-generating unit 70 from main casing 2, to fall with this.At this state, the fore-end of framework 71 is more outstanding than the front end (i.e. top in this illustrated example) of (promptly being positioned in uncovering position) protecgulum 6 of open position.In order at above-mentioned state image-generating unit 70 to be separated with main casing 2, the user catches handle portion 72 and the handle portion 72 that moves up tilts framework 71, makes its front end be positioned on the level that is higher than the rear end.By operation like this, maintenance excrescence 55 is moved downward and separates with stoping drop section area 56, thereby the joint between the two is released.In these release conditions, by further being moved forward, image-generating unit 70 keep framework 71 to be in lateral attitude simultaneously, and framework 71 is separated with main casing 2.
In the exemplary construction 1A of this explanation, when imaging unit 70 is positioned in when drawing off-position to put, is arranged on the handle portion 72 of framework 71 front ends and extends or outstanding a farther segment distance to the front portion along the pulling direction of image-generating unit 70A than the front end (i.e. top in this example) of the protecgulum of opening 6.By this arrangement, the user can hold handle portion 72 at an easy rate, and does necessary moving image-generating unit 70 is removed from main casing 2.Therefore, image-generating unit 70 can separate with main casing 2 at an easy rate, and can be pushed into unit accommodating section at an easy rate and divide 19.
With reference to figure 9 another implementation variations example or feature according to exemplary construction of the present utility model will be described.
In according to above-mentioned each exemplary construction of the present utility model, Delevoping cartridge 22 can be with respect to framework 21 attached and dismountings.Four boxes 76 are set in the exemplary construction of Fig. 9, and each box all comprises one group: (a) Delevoping cartridge 77 (function is equivalent to developing apparatus) and (b) photosensitive drums 30.Box 76 can be with respect to the framework 21 attached and dismountings of image-generating unit 70A.The description of being done will be about one of them box 76 hereinafter, and the reader will understand box every other in this exemplary construction 76 and have identical structure.Box 76 comprises box framework 78, and box framework 78 keeps photosensitive drums 30 in its bottom.Delevoping cartridge 77 is supported in the box framework 78, like this can be with respect to box framework 78 attached and dismountings.The photosensitive drums 30 that is arranged in the Delevoping cartridge 77 contacts at mutual pressure of maintained while with developer roll 26.Box 76 limits a slit 80 between the rear wall of the housing 79 of Delevoping cartridge 77 and box framework 78.This slit 80 is configured to extend to the upper surface of photosensitive drums 30 from the upper end of box 76.Arrive photosensitive drums 30 from scanner part 18 emitted laser bundle L by this slit 80.
In framework 75, four partition walls 83 are arranged in antetheca 82 back of framework 75 at regular intervals.In between each relative partition wall 83 and box mounting portion 84 that upward opening is set between antetheca 82 and the partition wall 83 relative with antetheca 82.Box 76 can be with respect to each box mounting portion 84 attached or dismountings.In the exemplary construction 70A of this explanation, three partition walls 83 in front are in height short than framework 75, make box mounting portion 84 communicate with each other on their top like this and/or open each other.When box 76 and framework 75 are attached, in the bottom of each partition wall 83, grid-control formula corona charging device 31 and cleaning brush 33 be configured to be positioned at photosensitive drums 30 around.The left and right sides sidewall 75A of framework 75 comprises the guide recess 85 that the drum axle 30B structure of other needs of the part of box 76 (perhaps as) of photosensitive drums 30 engages.Guide recess 85 is up extended to the front portion from the diagonal angle, bottom of sidewall 75A, and open at the coboundary of sidewall 75A their upper end.Installing and removing in the process of box 76 with respect to framework 75, the drum axle 30B (or other structure that needs) of photosensitive drums 30 is guided along guide recess 85.By this way, the installation of box 76 is directed with removing.As shown in the figure, the direction diagonal angle that removes of box 76 extends (towards the pull-out direction of framework 75) forward.In this exemplary construction, the installation of box 76/remove direction (among Fig. 9 shown in four-headed arrow) with the bearing of trend in slit 80 and/or from scanner part 18 emission be used for exposing at least a portion light path substantially parallel (term " substantially parallel " that uses at context comprises parallel) of laser beam L of photosensitive drums 30.
As described above and as shown in Figure 9, when photosensitive drums 30 is installed among the image-generating unit 70A, guide recess 85 can be oriented at respect to the straight line that connects photosensitive drum shaft 30B or comprise the angle of inclination on the plane of photosensitive drum shaft 30B.Can use any pitch angle (for example, greater than 0 ° less than 90 °) and do not deviate from the utility model.In some instances, can be in 45 ° to 90 ° scope at guide recess 85 and the straight line that is connected photosensitive drum shaft 30B or the angle that comprises between the plane of photosensitive drum shaft 30B, perhaps even in 65 ° to 90 ° scope.In the exemplary construction of this explanation, this angle is about 80 °.
In this exemplary construction, each box 76 comprises Delevoping cartridge 77 and photosensitive drums 30.Therefore, in this exemplary construction, Delevoping cartridge 77 and photosensitive drums 30 will be simultaneously by new replacement (for example, when toner does not have, or the like).
To describe according to another of the structure of the image-generating unit of some example of the present utility model with reference to Figure 10 and to change example.Four boxes 88 are set in this exemplary construction, and each box all comprises one group: (a) Delevoping cartridge 89, and (b) photosensitive drums 30, (c) grid-control formula corona charging device 31 and (d) cleaning brush 33.Box 88 can the attached and dismounting with the framework 87 of image-generating unit 70B.The description of being done will be about one of them Delevoping cartridge 88 hereinafter, and the box 88 that the reader will understand in this example other has identical structure.Box 88 is included in the box framework 90 that its bottom keeps photosensitive drums 30.Box framework 90 further supports grid-control formula corona-type charger 31 and cleaning brush 33 round photosensitive drums 30 in its bottom.Delevoping cartridge 89 is supported in the box framework 90 so that can be with respect to box framework 90 attached or dismountings.The photosensitive drums 30 of Delevoping cartridge 89 contacts at mutual pressure of maintained while with developer roll 26.Box 88 forms slit 92 between the rear wall of the housing 91 of Delevoping cartridge 89 and box framework 90.Slit 92 is configured to extend to from the upper end of box 88 upper surface of photosensitive drums 30, and passes slit 92 arrival photosensitive drums 30 from scanner part 18 emitted laser bundle L.
In framework 87, box 88 be releasably attached to wherein four box mounting portions 93 in fore-and-aft direction alignment so that interconnect (for example mounting portion 93 at its top be open with respect to another).The left and right sides wall 87A of framework 87 comprises the direction recess 94 that the drum axle 30B (or structure of other needs of box 88) of photosensitive drums 30 engages.Direction recess 94 is open from extension forward up of diagonal angle, bottom and their upper end of sidewall 87A in the upper edge of sidewall 87A.Installing and removing in the process of box 88 with respect to framework 87, the drum axle 30B (or other structures that need) of photosensitive drums 30 is guided along direction recess 94.Therefore, the installation of box 88 is directed with removing.As shown in the figure, the direction that removes of box 88 is extended (towards the pulling direction of framework 87) forward along diagonal line.The installation of box 88/remove direction (shown in double-head arrow among Figure 10) is arranged essentially parallel to slit 92 and/or from the bearing of trend of scanner part 18 at least a portion light path of 92 emitted laser bundle L along the slit.The term that uses in context " substantially parallel " comprises parallel.
According to the structural change of image-generating unit 70B of the present utility model and/or box 88, each box 88 comprises one group: (a) Delevoping cartridge 89, and (b) photosensitive drums 30, (c) grid-control formula corona charging device 31 and (d) cleaning brush 33.If desired, these parts can be simultaneously by with new replacement, whenever for example ought provide new box 88.Perhaps, if desired, Delevoping cartridge 89 can be removable from other parts of box 88, so that it can not need to replace drum 30, and charger 31 and/or brush 33 and replaced independently.Certainly, any combination of these parts can be included as a unit as the part of Delevoping cartridge (as being similar to box 88) and not deviate from the utility model.
In Fig. 9 and the described exemplary construction of Figure 10, described indent formula handle portion 72 is arranged on the front end of framework 75 and 87.Perhaps, shown in Figure 11 and 12, image-generating unit 70A and 70B can be equipped with from framework 75 and 87 towards the outstanding handle portion 158 in the front portion of image forming apparatus structure.By holding handle portion 158, the user can draw, and pushes away and/or mentions image-generating unit 70A and 70B.Have such structure, in case image-generating unit 70A is separated from its image processing system separately with 70B, the user can easily be carried to different places with image-generating unit 70A and 70B.
With reference to Figure 13 and 14, hereinafter will introduce another variation example according at least some examples of the present utility model.As shown in the figure, the image-generating unit 70C that is included in this exemplary construction has four independently LED exposing units 95, and each corresponds to black, cyan, a kind of color in four kinds of colors of magenta and yellow.These LED exposing units 95 be attached to framework 96 partition wall separately 97 the top and be electrically connected in the frame side connector 98A of the rear end that is arranged on framework 96.When framework 96 was positioned at attachment location, frame side connector 98A was connected with the main casing side-connector 98B of the main casing 2A that is fixed to laser printer 1.By such mode, LED exposing unit 95 is connected electrically to the control circuit (not shown) that is arranged among the main casing 2A.When imaging unit 70C by when attachment location spurs, frame side connector 98A disconnects with main casing side-connector 98B and being connected, as shown in figure 14.Each LED exposing unit 95 of this exemplary construction comprises a plurality of light emitting diode (not shown)s of axially aligning along photosensitive drums 30, and these diodes by according to corresponding to every kind independently the view data of color connection/off-state of controlling a plurality of light emitting diodes surface of light shining photosensitive drums 30 form electrostatic latent image with surface in photosensitive drums 30.
In this exemplary construction, image-generating unit 70C comprises LED exposing unit 95 therein, and therefore, main casing 2A can save the exposure device of separation.Therefore, the structure of the main casing 2A of laser printer 1A can be simplified.
With reference to Figure 15 and 16, will introduce another image forming apparatus structure 100 below according at least some examples of the present utility model.In ensuing introduction, the right side of Figure 15 will be called as the front side of laser printer 100, and the left side of Figure 15 will be called as the rear side of laser printer 100, and the distally of Figure 15 and nearside will be hereinafter referred to as the right side and the left side of laser printer 100.The realization of the image forming course in the laser printer 100 in this exemplary construction can be similar in appearance to the implementation procedure of the laser printer 1 of first exemplary construction of above introduction, and therefore, the detailed introduction of implementation procedure will be omitted.
As shown in figure 15, the laser printer 100 of this exemplary construction is to comprise that four correspond to black, cyan, the what is called of the photosensitive drums 101 of four kinds of colors of magenta and yellow " directly tandem " color laser printer.In this exemplary construction, be formed on toner image on each photosensitive drums 101 and directly be transferred on the recording medium such as paper or other paper or recording medium.
The laser printer 100 of this exemplary construction comprises the main casing 102 of vertical elongation.The unit accommodating section that image-generating unit 103 is installed is set in the main casing 102 divides 104.Loading provides dish 106 to be arranged on the bottom of main casing 102 as the paper of the paper 105 of recording medium.Provide the paper 105 of dish 106 to be provided to travelling belt 107 from paper.Travelling belt 107 is arranged on unit accommodating section and divides 104 rear side and vertically extend basically.Travelling belt 107 will be sent to the photographic fixing part 108 that is arranged on main casing 102 tops by the paper 105 of electrostatic adhesion on travelling belt 107 surfaces.In endless belt conveyer 107, the transfer roll (not shown) is configured to the photosensitive drums 101 in the face of corresponding imaging units 103.Paper 105 through photographic fixing part 108 is sent to a pair of distributing roller 109 thereafter.Loam cake 110 is set at the top of main casing 102.Loam cake 110 can be opened and close with respect to main casing 102, as shown in figure 16.The loam cake 110 of this exemplary construction 100 is whole photographic fixing part 108 and the distributing roller 109 of keeping of portion within it.The paper discharge dish 111 of the paper 105 that maintenance is discharged by distributing roller 109 is set at the top of laser printer 100 and extends to the upper surface of main casing 102 from the upper surface of loam cake 110.In main casing 102, scanner part 112 (playing the function of exposure device) is arranged on unit accommodating section and divides 104 front portion.Sweep test 112 from its rear side along the diagonal angle the four bundle laser beam L of emission downwards, each bundle corresponds to black, cyan, a kind of in magenta and the yellow four kinds of colors.The light path part of the laser beam L of this exemplary construction 100 is represented by the dot-and-dash line among Figure 15.In this exemplary construction 100, laser beam L is from 112 emissions of scanner part and can follow the light path parallel to each other and separated at regular intervals along the vertical direction to small part.
The image-generating unit 103 of this exemplary construction can upwards be drawn and the attached or dismounting with respect to main casing 102.Guide piece (not shown) and locking device (not shown) can be set between image-generating unit 103 and main casing 102.Can use any guide piece that needs kind and/or locking device and do not deviate from the utility model.Guide piece (for example comprising guide rail and/or direction recess etc.) can be used to guide the pull operation of image-generating unit 103.Locking device can be used to image processing system 103 remained on and draw the position of stopping (for example or near position shown in Figure 16).The image-generating unit 103 of this exemplary construction 100 comprises having the framework 113 of the vertical elongated of box-shaped basically.Handle portion 114 is arranged on the top of image-generating unit 103.The user is holding handle portion 114 and is moving apart image-generating unit 103 to form the position from image when spurring or mentioning image-generating unit 103.Framework 113 comprise four at framework 113 rear portions along the vertical direction with the photosensitive drums 101 of arranged at regular intervals.Framework 113 can further include grid-control formula corona charging device 115 and cleaning brush 116, and grid-control formula corona charging device 115 and cleaning brush 116 can be provided with around corresponding photosensitive drums 101 in any needed mode of the variety of way of above describe, in general terms that comprises.
In framework 113, the box mounting portion 117 with open front opening is arranged on the front side of photosensitive drums 101.Correspond to cyan, magenta, four Delevoping cartridges 118 yellow and four kinds of colors of black are attached to the box mounting portion 117 of framework 113 and have the compartment of terrain of certain distance to align along vertical direction each other.Each Delevoping cartridge 118 comprises housing 119 and at the developer roll with roll shaft 120A 120 of housing 119 rear end parts.The two ends of the roll shaft 120A of developer roll 120 are outstanding from the left and right sides of housing 119.The position that guide finger 121 is gone forward at the diagonal angle that corresponds to roll shaft 120A is set to housing 119 and outstanding from the left and right sides outside surface of housing 119.Framework 113 also can be equipped with direction recess 122 on the sidewall 113A of its left and right sides.The roll shaft 120A of developer roll 120 and the guide finger 121 of Delevoping cartridge 118 can engage with direction recess 122.Direction recess 122 upwards extends forward along the diagonal angle from the rear portion of sidewall 113A and their front end is open at the leading edge of sidewall 113A.By roll shaft 120A and guide finger 121 are engaged with direction recess 122, determined the attitude of Delevoping cartridge 118, and by moving roll shaft 120A and guide finger 121 along direction recess 122, the installation of Delevoping cartridge 118 is directed to removing.As shown in the figure, in the exemplary construction of this explanation, box 118 extends the pulling direction of framework 113 (and towards) forward from the direction diagonal angle that removes of framework 113.The installation of Delevoping cartridge 118/remove direction (shown in four-headed arrow among Figure 16) also is basically parallel at least a portion light path (term that uses this context " substantially parallel " comprises parallel) from scanner part 112 emitted laser bundle L.And the light path ground that the upper and lower surface of the housing 119 of each Delevoping cartridge 118 is basically parallel to laser beam L extends (term that uses in the literary composition " substantially parallel " comprises parallel), for example, so that set up slit or the passage that laser beam L can pass.
For from attachment location shown in Figure 15 pulling image-generating unit 103, at first, the user opens loam cake 110 and is contained in unit accommodating section and divides image-generating unit 104 in 104 by holding handle portion 114 (seeing Figure 16) pulling.When 103 arrival of imaging unit draw off-position to put, framework 113 can remain on this position by locking device (for example can tip the load on spring holding element of appropriate location when imaging unit 103 moves to the precalculated position fast in), can carry out the replacement of Delevoping cartridge 118.Under such state, by upwards spur Delevoping cartridge 118 (general pulling direction) forward along the diagonal angle towards image-generating unit 103, Delevoping cartridge 118 can be by from framework 113 dismounting, and Delevoping cartridge 118 can be attached on the framework 113 by promoting backward downwards along the diagonal angle.Have such structure, be compared to Delevoping cartridge with respect to framework in the horizontal direction by situation attached or dismounting, the operability when replacing Delevoping cartridge is higher.
For from main casing 102 separate imaging unit 103, the user unclamps locking device (if desired) and for example mentions image-generating unit 103 by holding handle portion 114.As mentioned above, the handle portion 114 hold when imaging unit 103 is raised being set makes the user can easily mention image-generating unit 103 it is taken away.As mentioned above, when imaging unit 103 from main casing 102 pulling and when mentioning, the direction that removes of Delevoping cartridge 118 extends upward along the diagonal angle.Therefore, even when framework 113 pulling, remove or carry to have on the operating period framework 113 and impact or collision, Delevoping cartridge 118 will can unexpectedly not fall down from framework 113 usually.And as mentioned above, at least some exemplary construction, at least some parts of the light path of laser beam L are basically parallel to that the installation of (comprising parallel) Delevoping cartridge 118/removing direction extends, and makes it possible to be provided with the Delevoping cartridge 118 with high capacity or max cap..Image-generating unit 103 can easily be attached to main casing 102 or remove from main casing 102, so that, can in main casing 102, easily carry out and remove the paper obstruction, repairs by removing image-generating unit 103 from main casing 102, and/or the replacement of parts in addition.
With reference now to Figure 17 and 18, introduces the structure that forms device according to another example image of the present utility model.As shown in figure 17, this example laser printer 201 is to comprise that four correspond to black, cyan, so-called " directly tandem " color laser printer of the photosensitive drums 230 of four kinds of colors of magenta and yellow, in this exemplary construction 201, be respectively formed at toner image on each photosensitive drums 230 and directly be transferred on the recording medium such as paper.The laser printer 201 of this exemplary construction comprises in main casing 202, paper feeding part 204 as a kind of paper 203 of recording medium is provided, on the paper 203 that is provided to wherein, form the image-generating unit 220 of image, and the paper translator unit 235 that transmits paper 203 with respect to image-generating unit 220.In ensuing introduction, the right side of Figure 17 will be called as the front side of laser printer 201, and the left side of Figure 17 will be called as the rear side or the dorsal part of laser printer 201, and the distally of Figure 17 and nearside will be hereinafter referred to as the right side and the left side of laser printer 201.
In this exemplary construction, the front portion of main casing 202 is equipped with the protecgulum 206 that can open or close with respect to main casing 202.Protecgulum 206 can cover between position (seeing Figure 17) and the uncovering position (seeing Figure 18) around axle (as pivot, hinge etc.) pivot rotation that is positioned at its lower end (though can use the structure of other lids and opening not deviate from scope of the present utility model).Covering the position, as shown in figure 17, protecgulum 206 extends to cover the front portion of main casing 202 with the position of perpendicular.At uncovering position, as shown in figure 18, protecgulum 206 rotates and extends to the position of basic horizontal.By from cover the position forward pivot rotate protecgulum 206, protecgulum 206 is movable to uncovering position.When protecgulum 206 was positioned at uncovering position, image-generating unit 220 can spur forward from main casing 202.When the protecgulum 206 of this exemplary construction is positioned at when covering the position, the upper end face of protecgulum 206 substantially with the same plane of the top surface of main casing 202 in extend (other arrangements are certainly arranged but do not deviate from scope of the present utility model).
In the bottom of main casing 202, paper feeding part 204 comprises that paper provides dish 207, and paper provides roller 208, separating pad 209, pick-up roller 210, a pair of paper scrap kicker cylinder 211 and a pair of registration rollers 212A and 212B.Paper provides bottom that dish 207 is attached to main casing 202 and from the dismounting of the bottom of main casing 202.Paper provides roller 208 and separating pad 209 to be set at the top that paper provides the fore-end of dish 207.Pick-up roller 210 is set at the rear side that paper provides roller 208.Paper scrap kicker cylinder 211 is set at the last front side that paper provides roller 208. Registration rollers 212A and 212B are set at this to paper scrap kicker cylinder 211 tops.
The paper of this exemplary construction provides dish 207 to have the plate-shaped that can load paper 203 thereon with the form of layering.Paper provides dish 207 also to comprise antetheca 213 at its front end.When paper provided dish 207 to be attached to main casing 202, antetheca 213 was positioned under the protecgulum 206.Provide dish 207 antetheca 213 by spurring paper forward, paper provides dish 207 to be extracted out by the front portion towards main casing 202 flatly.Provide in the dish 207 and at paper paper pressing plate 207A is set in its bottom.Paper pressing plate 207A can keep paper 203 with the form of layering.Paper pressing plate 207A pivotally is supported on its rear end, and its front end is upwards promoted by the spring (not shown) simultaneously.By such structure, being deposited in paper provides the paper 203 in the dish 207 to be kept by paper pressing plate 207A, and its front end is pushed upwardly.
Being placed on paper provides the uppermost paper 203 of paper 203 heaps in the dish 207 to be pressed to pick-up roller 210 from the expulsive force of paper pressing plate 207A.By the rotation of pick-up roller 210, uppermost paper 203 is provided between roller 208 and the separating pad 209 towards paper to transmit.Then, when paper 203 is sandwiched in paper when providing between roller 208 and the separating pad 209, this uppermost paper 203 is separated from paper 203 heaps, provides the rotation of roller 208 many to be provided by paper.Thereafter, the paper 203 that separates is through a pair of paper scrap kicker cylinder 211, so that remove from it attached to the paper scrap on the paper 203.After this, paper 203 further is sent to a pair of registration rollers 212A, 212B.
Registration rollers 212A and 212B play the function of driven roller and driven voller respectively.If desired, registration rollers 212A and 212B have corrected the crooked of paper 203, provide passage 214 paper 203 to be sent to the travelling belt 238 (sheet-transport belt) of paper translator unit 235 by paper.It is to transmit passage to the paper that small part is formed on the arc in the framework 221 of image-generating unit 220 that the paper of this exemplary construction 200 provides passage 214.
Top at the main casing 202 of this example printer arrangement 201 is provided with scanner part 218 (playing the function of exposure device).Scanner part 218 based on the data based toner color of predetermined picture with a branch of or more multi-laser beam L be transmitted on the surface of each photosensitive drums 230 (for example under high-speed scanning velocity).Just launched downwards along the diagonal angle from the bottom of sweep test 218 corresponding to versicolor four laser beam L.The light path part of the laser beam L of this exemplary construction 201 is represented by dot-and-dash line in Figure 17.In this exemplary construction 201, laser beam L be substantially parallel to each other (at least when them near photosensitive drums 230 time) and/or at fore-and-aft direction at regular intervals separately from 118 emissions (term that uses the literary composition " substantially parallel " comprises parallel) of scanner part.
In main casing 202, unit accommodating section divides 219 to be set at scanner part 218 belows.Can be drawn forward moving and can be attached to main casing 202 and be contained in unit accommodating section with the image-generating unit 220 that separates from main casing 202 and divide 219.In this exemplary construction 201, image-generating unit 220 comprises framework 221.Framework 221 supports quadruplet (or group) treating apparatus, in the present embodiment structure 201, every cover treating apparatus comprises photosensitive drums 230 (playing the function that image carries member), grid-control formula corona charging device 231 (playing the function of charging device), Delevoping cartridge 222 (playing the function of developing apparatus), and cleaning brush 233.Treating apparatus is arranged in fore-and-aft direction (being the pulling direction of imaging unit 220) and is substantially parallel to each other.
Four Delevoping cartridges 222 are attached to image-generating unit 220 or independently from image-generating unit 220 dismountings and corresponding to black, cyan, magenta and yellow shades of colour setting.After this, only introduce one of them Delevoping cartridge 222, the reader will understand, and every other at least in this example Delevoping cartridge 222 has identical structure.Delevoping cartridge 222 comprises box-like and has the housing 223 of open polycrystalline substance.Housing 223 has the toner storage chamber 224 of filling toner at an upper portion thereof.The stirrer (not shown) can be set in the toner storage chamber 224.When stirrer rotated owing to the energy from the motor input, the toner that is stored in the toner storage chamber 224 was stirred.Toner storage chamber 224 below Delevoping cartridges 222 can further include toner provides roller 225, developer roll 226 and layer thickness regulating blade 227.
In this exemplary construction 201, toner provides roller 225 rotatably to be supported by the housing 223 of Delevoping cartridge 222, and comprises the metal roller shaft that is covered with the roll body part of being made by conductive foams.Toner provides the energy rotation of roller 225 by the input of motor (not shown).
The developer roll 226 of this exemplary construction 201 with the contact toner provide roller 225 simultaneously together the mode of compressive deformation be set at the position, back down, diagonal angle that provides roller 225 with respect to toner.When Delevoping cartridge 222 is attached to framework 221, developer roll 226 opposite face ground contact photosensitive drums 230.The developer roll 226 of this example comprises the metal roller shaft 226A of the roll body part 226B that covering is made by conductive polyurethane rubber or conductive silicon rubber, and conductive polyurethane rubber or conductive silicon rubber can comprise for example carbon granule.The overlayer that surface coverage one deck of the roll body part of developer roll 226 is made by urethane rubber that can comprise fluorine or silicon rubber.In the process of developing, the development bias voltage can be applied to developer roll 226, and developer roll 226 can be by the energy rotation of motor (not shown) input.
In this exemplary construction 201, layer thickness regulating blade 227 comprises the lamellar body made by for example metal leaf spring member and has the roughly pressures partially of semicircular in shape at xsect.Pressures partially is arranged on the free end of lamellar body and is made by electrically insulating silicone rubber.Layer thickness regulating blade 227 is supported on developer roll 226 tops by housing 223, and is pressing developer roll 226 by the elastic force of lamellar body.
The toner of discharging from toner storage chamber 224 provides the rotation of roller 225 to be provided to developer roll 226 by toner, and toner can provide the friction positive charge that produces between roller 225 and the developer roll 226 by toner.Thereafter, the toner that is provided on the developer roll 226 enters between the pressures partially and developer roll 226 of layer thickness regulating blade 227.By using the rotation of layer thickness regulating blade 227 and developer roll 226, toner can be the thin layer of specific thickness by even regulation and be carried by developer roll 226.
In this exemplary construction 201, photosensitive drums 230 comprises bulging body 230A and the metal roller shaft 230B with cylindrical shape.Drum body 230A can be formed the photographic layer that its outermost layer is the positive charge made by for example polycarbonate.Drum axle 230B is arranged on the central shaft position of bulging body 230A and the longitudinal extension of edge drum body 230A.Drum axle 230B can be supported by framework 221, and the drum body is rotatably supported by drum axle 230B.Have such structure, photosensitive drums 230 is set in framework 221 around drum axle 230B rotation.Photosensitive drums 230 can be by the energy rotation of motor (not shown) input.
In this exemplary construction 201, grid-control formula corona charging device 231 is set in the face of photosensitive drums 230, and the distance of the regulation of being separated by and and do not contact photosensitive drums 230.In this exemplary construction 201, grid-control formula corona charging device 231 can be positioned at the position of any needs, such as with respect to photosensitive drums 230 along on the diagonal angle back position.Grid-control formula corona charging device 231 is for example by from producing corona discharge equably to the surface charging of photosensitive drums 230 such as the discharge silk of tungsten filament.
When having cleaning brush 233, it can be set to for example practise physiognomy from the rear portion of photosensitive drums 230 contact photosensitive drums 230 over the ground.
In the laser printer structure 201 of this example, paper translator unit 235 is set to be contained in the below that is positioned at image-generating unit 220 when unit accommodating section is divided in 219 when imaging unit 220.The paper translator unit 235 of this exemplary construction 201 comprises a pair of band backing roll 236 and 237 and travelling belt 238.Band backing roll 236 and 237 separates each other and extends parallel to each other at fore-and-aft direction.Travelling belt 238 is set to operation between this is to band backing roll 236 and 237.By the rotation of the back band backing roll 236 that drives from the energy of motor, travelling belt 238 is around band backing roll 236,237 shuttling movements.In endless belt conveyer 238 inside, four transfer rolls 239 for example are arranged as on fore-and-aft direction well-regulated interval and in the face of the photosensitive drums 230 of corresponding imaging units 220, and travelling belt 238 is sandwiched between photosensitive drums 230 and the corresponding transfer roll 239 thereof.At the clearer 240 that is provided under the travelling belt 238 removing attached to the residual toner on the travelling belt 238.The paper 203 of discharging from a pair of registration rollers 212A and 212B through paper provide passage 214 contact then front end on the travelling belt 238 near.Paper 203 can be attached to the upper surface of travelling belt 238 and pass through the circulation quilt of travelling belt 238 towards the rear portion of printer arrangement 201 (laterally) transmission by for example electrostatic force.
The surface of photosensitive drums 230 can be by grid-control formula corona charging device 231 along with the rotation of photosensitive drums 230 positive charge equably, and then, photosensitive drums 230 can be exposed under the laser beam L of the high-velocity scanning of scanner part 218 emissions.By such mode, can be formed on corresponding to the electrostatic latent image that will be formed on the image on the paper 203 on the surface of photosensitive drums 230.
Along with the rotation of developer roll 226, be carried on the developer roll 226 and and contact with photosensitive drums 230 by the toner of positive charge, the toner that provides like this is used to develop and is formed on the electrostatic latent image on photosensitive drums 230 surfaces.Toner is provided to photosensitive drums 230 (before) by the even exposed portion on the surface of positive charge, and remain on photosensitive drums 230 owing to be exposed to the part of current potential step-down under the laser beam L.As a result, the electrostatic latent image on photosensitive drums 230 becomes visual image so and generation reversal development.In this manner, form toner image on the surface of photosensitive drums 230.
In according to example printer arrangement 201 of the present utility model, when the transfer position between paper 203 process photosensitive drums 230 and the transfer roll 239, the toner image that is carried on the photosensitive drums 230 is transferred on the paper 203 by the transfer bias that puts on the transfer roll 239.Transfer printing thereon has the paper 203 of toner image to be sent to photographic fixing part 242 thereafter.
In this example printer arrangement 201, photographic fixing part 242 is arranged on the rear side of paper translator unit 235 in the main casing 202, and comprises warm-up mill 243 and the backer roll 244 that faces with each other.In photographic fixing part 242, the toner that is transferred on the paper 203 is fixed on the paper 203 by heating.The paper 203 that is fixed with toner on it is sent to a pair of distributing roller 246 of the upper position that is arranged on main casing 202 thereafter by a pair of transfer roller 245.Transfer roller 245 is arranged on respect to the edge of photographic fixing part 242 angular direction being gone up the position, back.The main casing 202 of this exemplary construction 201 is equipped with paper discharge dish 247 at its top.Paper discharge dish 247 is included in the substantially horizontal part of its front side and in the downward-sloping part of its rear side.The sloping portion of paper discharge dish 247 is downward-sloping towards the rear portion.The paper 203 of being discharged by distributing roller 246 is deposited on the paper discharge dish 247.
Next, will introduce structure in more detail according to the image-generating unit 220 of of the present utility model example.As shown in figure 17, the framework 221 of image-generating unit 220 has along the shape of the narrow box of fore-and-aft direction elongation.Framework 221 comprises antetheca 249 at its front end.In framework 221, four partition walls 250 and 251 are arranged in after the antetheca 249 and uniform interval are arranged on fore-and-aft direction.In framework 221, between each relative partition wall 250 and 251 and between antetheca 249 and the partition wall 250 relative box mounting portion 254 is set with antetheca 249.Box mounting portion 254 upward openings and Delevoping cartridge 222 can be attached to separately box mounting portion 254 or from separately box mounting portion 254 dismounting.First three partition wall 250 is about 2/3rds height of framework 221.Therefore, the adjacent box mounting portion 254 that is arranged on partition wall 250 both sides is open mutually on their top and/or interconnects.The front surface 250A of each partition wall 250 and the front surface 251A slight inclination of partition wall 251 so that their upper end turn forward.The angle of inclination of front surface 250A and 251A is configured such that front surface 250A and 251A are basically parallel at least a portion light path extension (term that uses the text " substantially parallel " comprises parallel) from scanner part 218 emitted laser bundle L.
Photosensitive drums 230 remains on the bottom of each box mounting portion 254, makes that photosensitive drums 230 is positioned near the partition wall 250 and/or 251 that is arranged on each photosensitive drums 230 rear side when each Delevoping cartridge 222 is installed to framework 221.In this exemplary construction 201, the bottom of photosensitive drums 230 is outstanding downwards slightly from the basal surface 221A of framework 221.Photosensitive drums 230 is set to accompany travelling belt 238 between the two in the face of corresponding transfer roll 239 and at it.In this exemplary construction 201, in each partition wall 250 and 251 inside, grid-control formula corona charging device 231 and cleaning brush 233 are arranged on the lower peripheral of partition wall 250 and 251 around photosensitive drums 230.
In the printer arrangement 201 of this example, identical between the shape of the housing 233 of Delevoping cartridge 222 is mutual.In this exemplary construction, consider the shape of box mounting portion 254, housing 233 has top wideer than their bottom on fore-and-aft direction.When Delevoping cartridge 222 was installed on the framework 221, the top of housing 223 projected upwards predetermined height from the top of framework 221.And the front surface 223A of housing 223 is basically parallel to corresponding partition wall 250 and extends (term that uses in the literary composition " substantially parallel " comprises parallel) with 251 front surface 250A.Three Delevoping cartridges 222 in back are installed in box mounting portion 254 separately and extend along same the straight line of front surface 250A with partition wall 250 so that the housing 223 of Delevoping cartridge 222 is oriented to their front surface 223A.Each housing 223 has the rear surface 223B that is basically parallel to its front surface 223A and extends (and be basically parallel to laser beam L at least a portion light path) (term that uses in the literary composition " substantially parallel " comprises parallel).In this exemplary construction 201, housing 223 be positioned in the framework 221 so that their rear surface 223B in the face of the front surface 223A of the housing 223 faced mutually or the front surface 251A of partition wall 251, between have predetermined distance.From scanner part 218 emitted laser bundle L through the slit between the front surface 251A of the rear surface 223B of the housing 223 that is arranged on each rear surface 223B of the adjacent housings of facing mutually 223 and the slit between the front surface 223A or last Delevoping cartridge 222 and partition wall 251.Laser beam L arrives the surface of corresponding photosensitive drums 230 thereafter.
The left and right sides wall 221B of framework 221 is equipped with direction recess 257, and the end of the roll shaft 226A of developer roll 226 and this direction recess 257 engage.Direction recess 257 extends upward diagonally forward from the bottom of sidewall 221B and their upper end is open at the coboundary of sidewall 221B.Delevoping cartridge 222 with respect to the installation of framework 221 with remove in the process, the roll shaft 226A of developer roll 226 is directed to along direction recess 257.Therefore, the installation of Delevoping cartridge 222 or remove is directed to.And, in this exemplary construction, Delevoping cartridge 222 remove direction with respect to Z-axis along the diagonal angle forward (towards the pulling direction of framework 221) extend.In this exemplary construction, the installation of Delevoping cartridge 222/remove direction also is basically parallel at least a portion light path (term that uses the literary composition " substantially parallel " comprises parallel) from scanner part 218 emitted laser bundle L.Certainly, if desired, any structure except roll shaft 226A and/or alternative roll shaft 226A can be by the above kind the direction recess guiding and do not deviate from the utility model, comprise being formed on the box 222 and/or as the included any structure of the part of box 222.
Direction recess 257 can with respect to the straight line that connects photosensitive drum shaft 230B or comprise photosensitive drum shaft 230B the plane any needs angle tilt and do not deviate from the utility model, such as being in an angle of inclination (for example greater than 0 degree and less than 90 degree).In examples more of the present utility model, with respect to the straight line that connects photosensitive drum shaft 230B or comprise the angle that the plane of photosensitive drum shaft 230B forms and spend in the scopes of 90 degree, or even spend in 90 scopes of spending 65 45 by direction recess 257.In the exemplary construction of the described explanation of Figure 17, this angle is about 80 degree.
For example for Delevoping cartridge 222 being remained on the suitable and/or preposition in the box mounting portion 254, framework 221 can also further be equipped with the engagement device (not shown)s.For example, when Delevoping cartridge 222 is installed in the box mounting portion 254 and arrives suitable installation site, engagement device can engage (for example movably engaging, by the joint of spring action or other elastic components) with Delevoping cartridge 222 Delevoping cartridge 222 is remained on the appropriate location.When the user need be when the installation site removes Delevoping cartridge 222, engagement device can break away from from Delevoping cartridge 222 thereafter.
The framework 221 of the image-generating unit structure 220 of this example for example forms along the outshot 252 of the whole lower front end of antetheca 249.Outshot 252 is just outstanding downwards from the basal surface 221A of framework 221.A registration rollers among a pair of registration rollers 212A and the 212B (for example driven voller 212B) can keep by the rear surface of outshot 252.In this exemplary construction, outshot 252 is whole a pair of guide piece 214A and the 214B of being equipped with in its underpart.This provides the paper of the basic arc that is bent upwards that passage 214 is provided to the interval between guide piece 214A and the 214B.In this exemplary construction, the paper 203 that is transmitted by a pair of registration rollers 212A and 212B provides passage 214 through paper, thereby is provided on the travelling belt 238 by a pair of guide piece 214A and 214B guiding simultaneously.A pair of rear foot part 253 is set at the posterior end of left and right sides wall 221B of framework 221 and outstanding from the basal surface 221A of framework 221 downwards.When imaging unit 220 is placed on desktop or other surfaces (the stopping surface (as shown in figure 20) such as smooth mounting plane T or other), rear foot part 253 contacts this surface with outshot 252, thus the basal surface 221A of framework 221 remain on from stop surface isolation and in the position through lifting of this stops surface.Therefore, photosensitive drums 230 remains on the level through promoting that photosensitive drums 230 can not contact this stop surface and/or be subjected to this stop surface disturbance.
In the printer arrangement 201 according at least some examples of the present utility model, rail-like guiding device (not shown) can be arranged between image-generating unit 220 and the main casing 202.Image-generating unit 220 can be along guide piece fore-and-aft direction slip (the rail-like guide piece can be the structure of general type, for example, allows the installation of image-generating unit 220 and installation and the move mode that move mode is similar to the desk drawer).Further, if desired, each the sidewall 221B that keeps excrescence 255 can be arranged on framework 221 goes up and projects upwards from the last rear end of each sidewall 221B.Corresponding stop drop section area 256 can be arranged on that unit accommodating section in the main casing 202 is for example divided 219 inwall and from each side direction lower process of inwall front end.Stop drop section area 256 to engage with the maintenance excrescence 255 of the framework 221 of image-generating unit 220.When imaging unit 220 when attachment location (seeing Figure 17) is drawn to off-position and puts (seeing Figure 18), keep excrescence 255 to engage with the rear surface that stops drop section area 256, drop from main casing 202 with prevention image-generating unit 220.In this exemplary construction, drawing off-position to put, framework 221 is downward-sloping by its deadweight, so that its front is positioned at the level more lower slightly than rear end side.In this position, keep excrescence 255 to remain on engagement state with stoping drop section area 256.And when imaging unit 220 is positioned at when drawing off-position to put, the top of framework 221 is open in the direction that removes of Delevoping cartridge 222, so that Delevoping cartridge 222 can easily be attached to framework 221 or remove from framework 221.Framework 221 can be equipped with for example at its antetheca and outstanding forward handle portion 258.Handle portion 258 can be installed and be held by the user during printer 210 removes in the pulling of image-generating unit 220.When the image-generating unit 220 of this exemplary construction 201 is positioned at when drawing off-position to put, the fore-end of framework 221 (for example comprising handle portion 258 and/or outshot 252) is more outstanding than the front end (for example top) of the protecgulum of opening 206.
For under state shown in Figure 17 (from attachment location) from main casing 202 pulling image-generating units 220, at first, the user opens the protecgulum 206 of housing 202, holds the handle portion 258 of image-generating unit 220 and spurs image-generating unit 220 forward.
When 220 arrival of imaging unit draw off-position to put, as shown in figure 18, keep excrescence 255 contacts also to engage and stop drop section area 256, so that stopping at, image-generating unit 220 draw off-position to put.By such mode, image-generating unit 220 is prevented from dropping from main casing 202.When imaging unit 220 is pulled to when drawing off-position to put, Delevoping cartridge 222 can be by with new replacement (for example needn't fully from housing 202 dismounting image-generating units 220).Delevoping cartridge 222 can remove or dismantle from framework 221 by spurring Delevoping cartridge 222 forward and upwards along the diagonal angle with respect to framework 221, and can be by along promoting Delevoping cartridge 222 downwards it is attached on the framework 221 in the diagonal angle in the opposite direction with the box side of removing.Therefore, be compared to the situation that Delevoping cartridge 222 is attached in vertical direction with respect to framework 221 or dismantle, the operability when replacing Delevoping cartridge 222 can be enhanced.And as mentioned above, framework 221 is equipped with paper passage 214 is provided.Has such structure, when providing passage 214 through paper, paper 203 takes place under the situation of paperboard, because when framework 221 is drawn forward when moving, the paper 203 that blocks moves forward with framework 221, thereby the paper that blocks 203 can easily remove therefrom.And when imaging unit 220 is positioned at when drawing off-position to put, paper provides the front portion of passage 214 more outstanding than the front end (for example top) of the protecgulum of opening 206.Therefore, being stuck in paper provides the paper 203 in the passage 214 easily to be removed therefrom.
In order to separate from main casing 202 or dismounting image-generating unit 220, at first, the user slightly mentions the front end of framework 221 with the framework 221 that is inclined upwardly (for example state of being represented by double dot dash line) in Figure 18 when holding handle portion 258.In this position, maintenance excrescence 255 moves backwards downwards along the diagonal angle and therefore is disengaged with prevention drop section area 256 and separates from prevention drop section area 256.By move forward framework 221 simultaneously framework 221 remain on this lateral attitude, image-generating unit 220 can separate (for example from desk, closet, or remove the similar fashion of drawer in other furniture) from main casing 202.When imaging unit 220 is positioned at when drawing off-position to put, handle portion 258 is more outstanding than the front end (for example top) of the protecgulum of opening 206.By such arrangement, the user can easily hold handle portion 258 and remove image-generating unit 220 from main casing 202.
The image-generating unit 220 that separates from main casing 202 can be taked the machine-direction oriented of such form when being raised as mentioned above, the end (for example antetheca 249 of this exemplary construction 220 middle frames 221) that handle portion 258 promptly is set in the face of top and opposite end (framework 221 is in the rear end of pulling direction) in the face of the below, as shown in figure 19.In Figure 19, arrow " G " has been indicated downward direction.As mentioned above, when being pulled or mentioning, imaging unit 220 all to use handle portion 258, so can carry out reposefully from being drawn to the sequence of operations of mentioning image-generating unit 220, the user does not need from a position to the position that another position ground conversion is held.When imaging unit 220 was raised as shown in figure 19, the direction that removes of Delevoping cartridge 222 was inclined upwardly along the diagonal angle.Therefore, even some impact or other collisions occur on the image-generating unit 220, Delevoping cartridge 222 can unexpectedly not drop from framework 221 usually yet.
As mentioned above, image-generating unit 220 can be carried to the different location, comprises the place that distance is arranged with the main casing 202 of laser printer 201.When imaging unit 220 is placed on such as stopping the surface, mounting plane T, when certain surface of desktop etc. and its basal surface 221A face down, rear foot part 253 will contact this surface with outshot 230, and photosensitive drums 230 will be maintained at the position of mentioning from this stop surface isolation, as shown in figure 20.Have such structure and arrangement, can avoid the interference between photosensitive drums 230 and stop surface, so can do not need to consider owing to other surfaces contact or the condition of the damage of the photosensitive drums 230 that interference causes under carry out maintenance, parts are replaced, cleaning and similar operations that paper stops up.In addition, when imaging unit 220 when main casing 202 separates, open the front portion of main casing 202.Therefore, can easily carry out and remove the paper 203 (seeing Figure 20) that is stuck in the main casing 202, and maintenance, the replacement of the parts in maintenance and the main casing 202.As an example more specifically, in the exemplary construction 201 of this explanation, when imaging unit 220 when main casing 202 separates, the image-generating unit 220 that comprises photosensitive drums 230 separates with the travelling belt 238 that transmits paper 203, and paper stops up and/or the replacement of travelling belt 238 can easily be carried out so remove.If desired, when the new replacement of photosensitive drums 230 usefulness of imaging unit 220, whole framework 221 can enough new replacements.Perhaps, if desired, independent photosensitive drums 230 and/or independent box 222 can be replaced under the situation of not replacing whole framework 221 individually.
In the exemplary construction of this explanation, from least a portion light path to the laser beam L of each photosensitive drums 230 of scanner part 218 emission be basically parallel to Delevoping cartridge 222 installation/removing direction extends (term that uses the literary composition " substantially parallel " comprises parallel).In such structure, Delevoping cartridge 222 need have the shape of not cutting off or disturbing laser beam L.If the light path of laser beam L is extended on the direction that intersects with the installation of Delevoping cartridge 222/remove direction, just can not be provided with usually and have jumbo Delevoping cartridge 222.But, in this exemplary construction 201, the last part of laser beam L light path (or part of extending along Delevoping cartridge 222 at least of light path) is basically parallel to the installation of Delevoping cartridge 222/remove direction and extends and have jumbo Delevoping cartridge 222 (term that uses in the literary composition " substantially parallel " comprises parallel) being provided with.
And, in this exemplary construction 201, the pulling direction and the paper of image-generating unit 201 provides the pulling direction of dish 207 identical, so laser printer 201 can by operation easily (for example can move easily and can not make coil 207 and/or image-generating unit 220 drop out, occupy less surrounding space etc.).
And in the main casing 202 of laser printer 201, paper provides dish 207, travelling belt 238, and image-generating unit 220 and paper discharge dish 47 are arranged successively from bottom to top according to this order, so can make the size of laser printer 201 more compact.
Another example image that to introduce according at least some examples of the present utility model with reference to Figure 21 and 22 forms apparatus structure 201A.In ensuing introduction, the right part of Figure 21 and left part will be called as front side and the rear side of laser printer 201A respectively, and the distally of Figure 21 and nearside will be called as right side and the left side of laser printer 201A respectively.The part identical with being included in the exemplary construction shown in Figure 17-20 is marked by identical label and will be omitted the introduction of these similar parts.
The laser printer 201A of this example of this explanation comprises and being arranged among the main casing 202A but the image-generating unit 260 that can not pull out from main casing 202A.In this image-generating unit 260, the installation of each independent Delevoping cartridge 222/remove direction tilts towards the front portion of printer 201A with respect to Z-axis and is basically parallel to light path (term that uses the literary composition " substantially parallel " comprises parallel) from some part at least of scanner part 218 emitted laser bundle L.Main casing 202A is equipped with top cover 261.In this example printer arrangement 201A, top cover 261 covers the top of image-generating unit 260 and can open and close with respect to main casing 202A, as shown in figure 22.Top cover 261 can also rotate around the rear portion that is arranged on main casing 202A and along attached shaft 262 pivots that left and right directions extends between covering position (seeing Figure 21) and uncovering position (seeing Figure 22).Covering the position, as shown in figure 21, top cover 261 covers the top of image-generating unit 260.At uncovering position, as shown in figure 22, top cover 261 inclinations are raised for its front end.Scanner part 218 and top cover 261 are held and/or are maintained at top cover 261 inside together, and move together with top cover 261.By top cover 261 is placed into uncovering position, the top of image-generating unit 260 is exposed and opening 263 (Figure 22) is provided.Delevoping cartridge 222 can be attached to the framework 221 of image-generating unit 260 and removes from the framework 221 of image-generating unit 260 by opening 263.
In this exemplary construction 201A, the installation of Delevoping cartridge 222/removing direction tilts with respect to vertical direction, so that the Delevoping cartridge 222 that is placed among the main casing 202A can easily be used new replacement.Especially, the installation of Delevoping cartridge 222/remove direction towards top rake so that when top cover 261 is arranged in uncovering position not can with the box 222 of main casing 202A remove and/or replacement operation disturbs.Therefore, the replacement of Delevoping cartridge 222 can further easily be carried out.
Perhaps, if desired, lid 261 can be opened and/or other are associated with housing 202A structure and/or image-generating unit 260 can be movably and/or be oriented to make whole image-generating unit 260 vertically for example to remove by open top 263 from housing 202A, shown in Figure 23 integral body.If desired, when the image-generating unit 260 of this exemplary construction is removed, travelling belt 238 will remain among the housing 202A.Can use the structure of any needs of in main casing, placing image-generating unit 260 and holding it in the appropriate location and not deviate from the utility model.
In above-mentioned example, narrate with as an example image forming apparatus structure of direct tandem color laser printer (promptly image directly is transferred to printer on the recording medium therein).Yet other aspects of the present utility model also can be used for the various devices of other image forming apparatus, such as facsimile recorder, and duplicating machine, scanner etc.And, various aspects of the present utility model also can drop into actual use together with other class of printers or image forming apparatus, such as intermediate transfer formula color laser printer etc., wherein image is transferred on the recording medium by the intermediate member such as intermediate transfer belt or intermediate transfer drum.For the recording medium of document image thereon, can use such as paper lantern slide, fabric, plastics etc.According to the handle portion of image forming apparatus structure of the present utility model when being provided with also can comprise be different from above specify and accompanying drawing in structure and the potential structure of position and/or potential site on diversity is widely arranged.
And in above-mentioned example, image-generating unit totally is described to pull out from the image forming apparatus housing along general horizontal direction or vertical direction with respect to main casing.Perhaps, if desired, image-generating unit can not deviated from the utility model along other direction pullings, such as making progress with respect to the main casing diagonal angle.The execution of the exposure of Electrifier frame, photoreceptor (for example rouse, band etc.) can not deviate from the utility model in that diversity is arranged aspect different scanning and/or the light source widely yet, comprises conventional known scanning system and scanning system used in the art.
Though describe the utility model in detail with reference to concrete exemplary construction, practician in the art will recognize and can implement various variations, arrange and revise and apply it to go in the structure that is disclosed and do not deviate from spirit and scope of the present utility model defined in the attached claim.

Claims (25)

1. an imaging device is characterized in that, this imaging device comprises;
Housing;
Be configured to the image-generating unit that removes from housing at first direction, wherein said image-generating unit comprises framework; With a plurality of boxes, each box comprises that at least one is used for the developing apparatus of Electrifier frame, photoreceptor separately, and each box in wherein said a plurality of boxes is configured in second direction attached and dismounting with respect to the framework of image-generating unit, and wherein said second direction tilts towards first direction.
2. imaging device as claimed in claim 1 is characterized in that, wherein said image-generating unit is configured to be attached to housing and dismantles from housing.
3. imaging device as claimed in claim 2 is characterized in that wherein said image-generating unit comprises handle portion.
4. imaging device as claimed in claim 3 is characterized in that, wherein said handle portion is arranged on first end of image-generating unit, and wherein image-generating unit is configured to separate with housing by upwards mentioning handle portion.
5. imaging device as claimed in claim 1 is characterized in that this imaging device further comprises radiative exposure device, and wherein at least a portion light path that is transmitted into the light of Electrifier frame, photoreceptor from exposure device is basically parallel to second direction and extends.
6. imaging device as claimed in claim 1 is characterized in that this imaging device further comprises the travelling belt that transmits recording medium, and wherein said image-generating unit is configured to move with respect to travelling belt when first direction moves when the imaging unit.
7. imaging device as claimed in claim 1, it is characterized in that, the dish that provides of the media that is used to hold the record further is provided this imaging device, and the wherein said dish that provides is installed in the housing movably, and the wherein said dish that provides can remove from housing in first direction substantially.
8. imaging device as claimed in claim 1 is characterized in that, wherein said each Electrifier frame, photoreceptor engages with image-generating unit.
9. imaging device as claimed in claim 1 is characterized in that, each box in wherein said a plurality of boxes comprises developing apparatus and Electrifier frame, photoreceptor separately.
10. imaging device as claimed in claim 2, it is characterized in that, this imaging device further comprises and allows image-generating unit to move to that a plurality of boxes can be attached to framework and from the prevention falling apparatus of the stop position of framework dismounting, wherein said prevention falling apparatus prevents that image-generating unit from falling from stop position, and is configured to allow to discharge image-generating unit from housing.
11. imaging device as claimed in claim 10 is characterized in that, wherein said image-generating unit comprises handle portion.
12. imaging device as claimed in claim 10 is characterized in that, wherein said image-generating unit comprises handle portion, and wherein said handle portion also is configured to image-generating unit is discharged from stoping falling apparatus.
13. imaging device as claimed in claim 11 is characterized in that, wherein said handle portion comprises first in command's member of first side that is arranged on framework and is arranged on second in command's member of second side of framework.
14. imaging device as claimed in claim 13 is characterized in that, wherein said first in command's member is arranged on along the relative both sides of the central shaft of first direction extension with second in command's member.
15. imaging device as claimed in claim 11, it is characterized in that wherein said handle portion can move than the mentioning between the position of center of gravity of handle portion more close framework when spurring the position in the pulling position and the position of handle portion in first direction of image-generating unit one end at handle portion.
16. imaging device as claimed in claim 15 is characterized in that, wherein said framework comprises:
Rotating handle member with handle portion; With
Contact the detent that rotates with restriction handle member with described handle member, wherein when described image-generating unit by when being positioned at the handle portion of mentioning the position and mentioning, on the direction that detent is pressed the handle member, produce torque and have nothing to do with the situation of a plurality of boxes.
17. imaging device as claimed in claim 2 is characterized in that, wherein said housing comprises the lid member of the opening that is used for covering shell, wherein covers member by opening towards first end of first direction tilt cover member,
Wherein said image-generating unit comprise handle portion and
Wherein when the lid member be opened and described image-generating unit when housing removes, described handle portion is projected into and surpasses first end that covers member.
18. imaging device as claimed in claim 2, it is characterized in that, the dish that provides of the media that is used to hold the record further is provided this imaging device, and the wherein said dish that provides is installed in the housing removedly, and the wherein said dish that provides can remove from housing in first direction substantially.
19. imaging device as claimed in claim 2 is characterized in that, this imaging device further comprises the travelling belt that transmits recording medium, and wherein said image-generating unit is configured to move with respect to travelling belt when first direction moves when the imaging unit.
20. imaging device as claimed in claim 2 is characterized in that, the framework of wherein said image-generating unit comprises: stop a plurality of Electrifier frame, photoreceptors to contact the prevention countermeasure set of this flat surfaces when the imaging unit is placed on flat surfaces.
21. imaging device as claimed in claim 20 is characterized in that, wherein said prevention countermeasure set comprises at least from framework and is projected into first foot section above Electrifier frame, photoreceptor.
22. imaging device as claimed in claim 20 is characterized in that, wherein said prevention countermeasure set is that image-generating unit limits a stop plane, and wherein said a plurality of Electrifier frame, photoreceptors are positioned at least from the place that stops the minor increment in plane.
23. imaging device as claimed in claim 2 is characterized in that, wherein each Electrifier frame, photoreceptor engages with image-generating unit.
24. imaging device as claimed in claim 2 is characterized in that, each box in wherein a plurality of boxes comprises developing apparatus and Electrifier frame, photoreceptor separately.
25. imaging device as claimed in claim 1 is characterized in that, wherein said framework limits the groove that extends in second direction substantially, and one of them in wherein said a plurality of boxes engages with framework by described groove.
CN 200520105288 2004-09-29 2005-09-29 Imaging equipment and imaging unit Expired - Lifetime CN2867399Y (en)

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