CN101614987A - Delevoping cartridge - Google Patents

Abstract

A kind of Delevoping cartridge comprises: the housing of the first side wall and second sidewall relative with the first side wall; Be arranged on the developer roll between the first side wall and second sidewall, developer roll comprises the development roll shaft that is configured to rotate and is configured to carry the developer roll member of developer thereon in developing process, the developer roll member is arranged to around described development roll shaft, and the development roll shaft rotates around first axle (X1) in developing process; Be arranged on the first side wall adjacent to the electrode of development roll shaft, electrode is electrically connected to the developer roll member; With the coupling connection portion that is driven that is arranged on second sidewall, be driven in the driving coupling connection portion that coupling connection portion is connected to image forming apparatus and be configured in developing process around second axis (X2) rotation, electrode has the contact site of the feed-in member that is configured to the contact image forming device; During projection, at least a portion of contact site is arranged in this projection section on being driven the direction that coupling connection portion is being parallel to the development roll shaft.

Description

Delevoping cartridge

The application divides an application for following application,

The applying date of original application: on May 31st, 2006,

The application number of original application: 200610092476.8,

The denomination of invention of original application: Delevoping cartridge.

The cross reference of related application

[0001] the application requires the right of priority for following Japanese patent application: the patented claim 2005-200510 that on July 8th, 2005 submitted to, the patented claim 2005-259644 that on September 7th, 2005 submitted to, the patented claim 2005-376522 that on Dec 27th, 2005 submitted to, all the elements of these applications are incorporated by reference herein.

Technical field

[0002] various aspects of the present invention relate to the Delevoping cartridge that is used for such as the image forming apparatus of laser printer.

Background technology

[0003] in general, the Delevoping cartridge that contains toner all is in the main body that can be installed in such as the image forming apparatus of laser printer with removing.Delevoping cartridge also is equipped with the toner chamber that is configured to store toner in its housing, can be rotatably set in the stirrer in the toner chamber, be configured to supply with the donor rollers of toner, be configured to carry the developer roll of toner thereon, be configured on developer roll, form the layer thickness regulating blade of toner thin layer.

When [0004] Delevoping cartridge was driven after in being installed to main body, the toner in the toner chamber was provided on the donor rollers by the rotation of stirrer.After this, toner is provided on the developer roll according to the rotation of donor rollers.Toner passes through according to being rotated between layer thickness regulating blade and the developer roll of developer roll then, thereby is carried on the developer roll as a thick-layer.On developer roll, apply the development bias voltage.The toner that carries on the last developer roll is with the latent electrostatic image developing that forms on the photosensitive drums.

[0005] Delevoping cartridge comprises the gear mechanism that is configured to drive developer roll, donor rollers and stirrer.For example, the open communique 2003-295614 of Jap.P. discloses a kind of gear mechanism on the sidewall that is arranged on the Delevoping cartridge housing.Gear mechanism in this Delevoping cartridge comprises the input gear, and driving force is input to this input gear from the main body of image forming apparatus.

[0006] is configured for supporting the another side sidewall that developer roll bearing at end member is arranged on the Delevoping cartridge housing.Bearing components forms with the feed-in member that applies the development bias voltage to developer roll is whole.

[0007] in the open disclosed Delevoping cartridge of communique 2003-295614 of Jap.P., article one, be parallel to the developer roll axis and pass the straight line that is arranged on an input gear on the sidewall and straight line that another is parallel to the developer roll axis and passes the feed-in member that is arranged on another sidewall is arranged to parallel to each other and between the two at a distance of certain distance.When driving force when the main body of image forming apparatus is input to the input gear, if producing Delevoping cartridge is applied on the Delevoping cartridge around such rotating force or the torsion that the input gear rotates or reverses, the feed-in member that is arranged on another sidewall just is in out of position, thereby causes electric power supply or electric power feed-in deficiency from the main casing of image forming apparatus.

Summary of the invention

[0008] various aspects of the present invention provide a kind of Delevoping cartridge, promptly convenient driving force directly from the driving coupling connection portion of image forming apparatus when the coupling connection portion that the is driven transmission of Delevoping cartridge, this Delevoping cartridge also can be stably to the feed-in of development roll shaft or electric power is provided.

[0009] in order to reach above-mentioned various aspects, according to claim 1 of the present invention, Delevoping cartridge comprises a housing, and this housing comprises the first side wall and second sidewall relative with the first side wall; Be arranged on the developer roll between the first side wall and second sidewall, this developer roll comprises development roll shaft that is configured to rotation during developing and the developer roll member that is configured to carry on it developer, the developer roll member is arranged on around the development roll shaft, and the development roll shaft rotates around first axle during developing; Be arranged on the electrode of contiguous development roll shaft on the first side wall, this electrode is connected electrically to the developer roll member; With the coupling connection portion that is driven that is arranged on second sidewall, this is driven in the driving coupling connection portion that coupling connection portion is connected to image forming apparatus, and is configured to during developing around the rotation of second axis.In aspect described in the claim 2, according to claim 1, the first axle and second axis can be arranged to parallel to each other.At least the part of electrode can be arranged to and second axes intersect.

[0010] directly transfers to the coupling connection portion that is driven when driving force from the driving coupling connection portion of image forming apparatus, on Delevoping cartridge, apply and produce Delevoping cartridge when being driven the rotation of coupling connection portion or revolving force that reverses or torsion, because above-mentioned structure, can prevent that revolving force or torsion from producing significant impact to electrode, because the part of electrode is arranged to and second axes intersect at least.Like this, can prevent that electrode is in unsuitable position.Thereby electric power can stably be provided to the development roll shaft.

[0011] according to claim 16 of the present invention, Delevoping cartridge can comprise shell, and shell comprises the first side wall and second sidewall relative with it; Be arranged on the developer roll between the first side wall and second sidewall, developer roll comprises development roll shaft that is configured to rotation during developing and the developer roll member that is configured to carry developer thereon, the developer roll member is arranged on around the development roll shaft, and the development roll shaft rotates around first axle during developing; Be arranged on the electrode that is adjacent to the development roll shaft on the first side wall, this electrode is connected electrically to the developer roll member; With the coupling connection portion that is driven that is arranged on second sidewall, this is driven in the driving coupling connection portion that coupling connection portion is connected to image forming apparatus, and is configured to rotate around second axis during developing.In one aspect, first line extend perpendicular to first axle and with second axes intersect, second line extend perpendicular to first axle and at least with a part and second axes intersect of electrode.In aspect in the claim 17 of claim 16 another, the distance of first between the intersection point of the intersection point of first line and first axle and first line and second axis can equal the second distance between the intersection point of the intersection point of second line and first axle and second line and second axis.

[0012] transfers to the coupling connection portion that is driven from the driving coupling connection portion of image forming apparatus when driving force, on Delevoping cartridge, apply and produce Delevoping cartridge when being driven the rotation of coupling connection portion or revolving force that reverses or torsion, because above-mentioned structure, because first distance and second distance equate, just can prevent that revolving force or torsion from producing significant impact to electrode.Like this, can prevent that electrode is in unsuitable position.Thereby electric power can stably be provided to the development roll shaft.

[0013] according to claim 32 of the present invention, Delevoping cartridge can comprise housing, and this housing comprises the first side wall and second sidewall relative with it; Be arranged at the developer roll between the first side wall and second sidewall, this developer roll comprises development roll shaft that is configured to rotation during developing and the developer roll member that is configured to carry developer thereon, and this developer roll member is arranged on around the development roll shaft; Be arranged on the electrode that is adjacent to the development roll shaft on the first side wall, this electrode is connected electrically to the developer roll member; With the coupling connection portion that is driven that is arranged on second sidewall, this is driven in the driving coupling connection portion that coupling connection portion is connected to image forming apparatus.When outstanding, the part of electrode can be arranged in this outshot at least on being driven the direction that coupling connection portion is being parallel to the development roll shaft.

[0014] directly transfers to the coupling connection portion that is driven when driving force from the driving coupling connection portion of image forming apparatus, applying the generation Delevoping cartridge on the Delevoping cartridge when being driven the rotation of coupling connection portion or revolving force that reverses or torsion, because above-mentioned structure, because on being driven the direction that coupling connection portion is being parallel to the development roll shaft when outstanding at least the part of electrode be arranged in this outshot, just can prevent that revolving force or torsion from producing significant impact to electrode.Like this, can prevent that electrode is in unsuitable position.Thereby electric power can stably be provided to the development roll shaft.

[0015] according to claim 46, in according to any one Delevoping cartridge in the claim 1,16 and 32, an end of developer roll can be by at least one side wall support in the first side wall and second sidewall at least.

[0016] owing to this structure, an end of developer roll can be by at least one side wall support in the first side wall and second sidewall at least.Therefore, when developer roll was supported securely, power can stably be provided to the developer roll member.

[0017] according to claim 47, in according to any one Delevoping cartridge in the claim 1,16 and 24, each end of developer roll can be by the first side wall and second side wall support.

[0018] owing to this structure, each end of developer roll can be by the first side wall and second side wall support.Therefore, when developer roll was supported securely, electric power can stably be provided to the developer roll member.

[0019] according to claim 48, in according to any one Delevoping cartridge in the claim 1,16 and 47, an end of the developer roll member supports that can be provided with by at least one sidewall that is adjacent in the first side wall and second sidewall at least.

[0020] owing to this structure, an end of developer roll can be by the member supports that is adjacent at least one sidewall setting in the first side wall and second sidewall at least.Therefore, developer roll can be assembled or be fastened on this adjacent member effectively.When developer roll was supported securely, electric power can stably be provided to the developer roll member.

[0021] according to claim 49, in the Delevoping cartridge according to claim 48, each end of developer roll can and be adjacent to second member supports that second sidewall is provided with by first member that is adjacent to the first side wall setting.

[0022] owing to this structure, each end of developer roll all can be by first member that is adjacent to the first side wall setting and second member supports that be adjacent to the setting of second sidewall.Therefore, developer roll can assemble effectively or be fastened on this adjacent member.When developer roll was supported securely, electric power just can be provided to the developer roll member with being stabilized.

[0023] according to claim 50, according to claim 1,16,32 and 46-49 in any one the Delevoping cartridge, electrode can be made of metal.

[0024] owing to this structure, electrode can be made of metal.Therefore electric power can be provided to electrode reliably.

[0025] according to claim 51, according to claim 1,16,32 and 46-49 in any one the Delevoping cartridge, electrode can be made by electroconductive resin.

[0026] owing to this structure, electrode can be made by electroconductive resin.Therefore electrode can form Any shape, and electric power can stably be provided to the developer roll member.

[0027] according to claim 52, according to claim 1,16,32 and 46-51 in any one the Delevoping cartridge, the development roll shaft can comprise conductive member.Electrode and developer roll member can be electrically connected by the development roll shaft.

[0028] owing to this structure, electrode and developer roll member can be electrically connected by the development roll shaft.Therefore electric power can be provided to the developer roll member from electrode reliably.

[0029] according to claim 53, in the Delevoping cartridge according to claim 52, the development roll shaft can be made of conductive material.

[0030] owing to this structure, the development roll shaft can be made of conductive material.Therefore electric power can be provided to the developer roll member from electrode more reliably.

[0031] according to claim 54, in the Delevoping cartridge according to claim 53, the development roll shaft can be made of metal.

[0032] owing to this structure, the development roll shaft can be made of metal.Therefore, electric power can be provided to the developer roll member from electrode more reliably.

[0033] according to claim 55, in the Delevoping cartridge of any one, electrode can be a part that directly contacts the member of development roll shaft in according to claim 52-54.

[0034] owing to this structure, electrode can be a part that directly contacts the member of development roll shaft.Therefore electric power can be provided to the developer roll member from electrode reliably.

[0035] according to claim 56, in the Delevoping cartridge of any one, electrode can contact the development roll shaft indirectly by at least one conductive member in according to claim 52-54.

[0036] owing to this structure, electrode can pass through at least one conductive member indirect contact development roll shaft.Therefore the relative position of electrode and development roll shaft can freely be selected.After design was modified effectively, electric power can be provided to the developer roll member from electrode reliably like this.

[0037] according to claim 3,19 and 33, in the Delevoping cartridge according to claim 1,16 and 32 respectively, electrode can be around the circumferential section of development roll shaft.

[0038] owing to this structure, developer roll can be by other member supports.Need the number and the cost of the parts of use just can reduce like this.

[0039] according to claim 57, according to claim 1,16,32 and the Delevoping cartridge of 47-56 in, be driven coupling connection portion and can comprise first column part and be arranged on second column part around first column part.

[0040], is driven coupling connection portion and can comprises first column part and be arranged on first column part, second column part on every side owing to this structure.Therefore first column part can receive the driving force of self-driven coupling connection portion reliably.Second column part can be sent to driving force the development roll shaft reliably.

[0041] according to claim 58, in Delevoping cartridge according to claim 57, that first column part is essentially hollow and be equipped with in perimeter surface, outstanding with the driven portion that drives the engagement of coupling connection portion perimeter surface in this.

[0042] because this structure, be driven parts and be meshed by making with driving coupling connection portion, driving force can be reliably from driving the reception of coupling connection portion.

[0043] according to claim 59, in the Delevoping cartridge according to claim 57 or 58, first column part can comprise gear.

[0044] owing to this structure, first column part can comprise gear.Therefore driving force can receive reliably from driving coupling connection portion.

[0045] according to claim 4,20 and 34, in the Delevoping cartridge according to claim 1,16 and 32 respectively, developer roll can comprise and connects into the developer roll gear that can rotate with the development roll shaft.Being driven coupling connection portion can comprise directly and the driven wheel of developer roll gearing mesh.

[0046], is driven coupling connection portion and can comprises the driven wheel that meshes with the developer roll direct geared owing to this structure.Therefore, can directly be delivered to the developer roll gear by being driven coupling connection portion from the driving force that drives the reception of coupling connection portion from being driven coupling connection portion.Like this, developer roll just can be rotated reliably.In addition, because such structure, can not be directly delivered to the developer roll gear from the driving force of image forming apparatus, thereby make the development roll shaft can be used as the guiding of installing in the Delevoping cartridge process.Therefore guiding piece can be provided with in addition, and employed number of components and parts and cost are minimized.

[0047] according to claim 5,21 and 35, the Delevoping cartridge according to claim 4,20 and 35 can also comprise the donor rollers that is configured to developer is provided to developer roll respectively, and donor rollers parallels setting with developer roll.Donor rollers can comprise the supply roll shaft that is configured to rotation during developing, be configured to provide the donor rollers member of developer to developer roll, this donor rollers member is arranged to be supplied with around the roll shaft, comprise also connecting into that this donor rollers gear configurations becomes to be meshed with driven wheel with supplying with the donor rollers gear that roll shaft rotates.

[0048] owing to this structure, the donor rollers gear can mesh with driven wheel.Therefore can be delivered to the donor rollers gear by being driven coupling connection portion from being driven coupling connection portion from the driving force that drives the reception of coupling connection portion.Like this, the donor rollers gear can rotate reliably.In addition, because this structure, driving force can be delivered to developer roll gear and donor rollers gear from being driven coupling connection portion.Like this, driving force just can be transmitted effectively, and developer roll and donor rollers can be rotated effectively.

[0049] according to claim 6,22 and 36, in the Delevoping cartridge according to claim 5,21 and 35 respectively, electrode can be connected electrically to the supply roll shaft.

[0050] owing to this structure, electrode can be connected electrically to the supply roll shaft.Therefore electric power also can be provided to donor rollers.

[0051] according to claim 7,23 and 37, in the Delevoping cartridge according to claim 6,22 and 36 respectively, electrode can have and is configured to around the first of the circumferential section of development roll shaft and is configured to around the second portion of the circumferential section of supplying with roll shaft.

[0052] owing to this structure, development roll shaft and supply roll shaft can be supported by first and second portion respectively reliably.

[0053] according to Claim 8,24 and 38, in the Delevoping cartridge according to claim 7,23 and 37 respectively, electrode can have the contact site of the feed-in member that is configured to the contact image forming device, and this contact site is arranged on first and second portion top.

[0054] owing to this structure, electrode can have the contact site that is arranged on first and second portion top.Therefore, electrode can be realized reliably contacting at contact site and feed-in member.Like this, electric power can be provided to electrode from image forming apparatus reliably.

[0055] according to claim 60, in the Delevoping cartridge according to claim 1,16 and 32, Delevoping cartridge can be installed in the sensitization box, and the sensitization box comprises Electrifier frame, photoreceptor, and electrostatic latent image forms on this member.

[0056] owing to this structure, Delevoping cartridge can be removably mounted in the sensitization box that comprises Electrifier frame, photoreceptor.Therefore, have only Delevoping cartridge to change with new Delevoping cartridge, do not need to consider the life-span of Electrifier frame, photoreceptor according to the amount of residual developer.The sensitization box can be changed according to the life-span of Electrifier frame, photoreceptor, did not need to consider to remain in the amount of the developer in the Delevoping cartridge.

[0057] according to claim 61, can also comprise outshot according to the Delevoping cartridge of claim 1,16 and 32, when Delevoping cartridge is installed in the sensitization box, the biasing part in this outshot tactility light box.

[0058] because this structure, when Delevoping cartridge is installed in the sensitization box, the offset part that the outshot of Delevoping cartridge can the tactility light box, thus make developer roll can contact Electrifier frame, photoreceptor.Therefore by the reliable contact between developer roll and the Electrifier frame, photoreceptor, the developer that carries on the developer roll can make the electrostatic latent image that is formed on the Electrifier frame, photoreceptor develop reliably.

[0059] according to claim 62, in the Delevoping cartridge according to claim 61, outshot can stretch out from the first side wall and second sidewall.

[0060] owing to this structure, outshot can stretch out from the first side wall and second sidewall.Therefore outshot can contact reliably with offset part.So just guaranteed the reliable contact between developer roll and the Electrifier frame, photoreceptor.

[0061], in Delevoping cartridge, is driven coupling connection portion and can comprises first column part and be arranged on first column part, second column part on every side according to claim 32 according to claim 39.By making the first column part thumping go out to form teat.At least a portion of electrode is arranged in this teat.

[0062] owing to this structure, electrode can also be prevented from placing unsuitable position.Be provided to the development roll shaft with having guaranteed electrical power stabilization like this.

[0063] according to claim 63, in Delevoping cartridge according to claim 39, first column part can be hollow basically and be equipped with in perimeter surface, with drive that coupling connection portion is meshed to be driven parts perimeter surface in this outstanding.

[0064] because this structure, be driven parts and be meshed by making with driving coupling connection portion, clump drives coupling connection portion reception driving force reliably.

[0065] according to claim 9,25 and 40, in the Delevoping cartridge according to claim 1,16 and 32, electrode can comprise the first that is configured to around the circumferential section of development roll shaft.This first can be arranged to contact the development roll shaft movably.

[0066] owing to this structure, electric power can be provided to the development roll shaft reliably.

[0067] according to claim 10,26 and 41, in the Delevoping cartridge according to claim 9,25 and 40 respectively, electrode can comprise by fixed component and is attached to second portion on the first side wall.The fixed component sidewall comprises and is configured to prevent that electrode is from the first side wall separated portions.An end face of second portion spatially separates in the face of end face of this part of fixed component and with it.

[0068] owing to this structure, first can contact the development roll shaft reliably.

[0069] according to claim 11,27 and 42, in the Delevoping cartridge according to claim 10,26 and 41 respectively, fixed component can be a screw element, and this part of fixed component can be the screw element head.

[0070] owing to this structure, electrode can also easily be attached to the first side wall by screw element is reliable, makes electrode slightly move.

[0071] according to claim 12,28 and 43, in the Delevoping cartridge according to claim 10,26 and 40 respectively, the first side wall can be equipped with acceptance division, and this acceptance division is constructed such that second portion centers on this acceptance division and makes fixed component insert this acceptance division.The end face of acceptance division can be configured to from the outside end face of giving prominence to the described part of contact fixed component of the end face of second portion.

[0072] owing to this structure, fixed component can be arranged in and have certain distance between fixed component and the second portion.Therefore, the distance between the end face of the end face of second portion and fixed component can accurately and reliably be provided with.Therefore, first can contact the development roll shaft reliably, guarantees the level and smooth rotation of development roll shaft with respect to first simultaneously.

[0073] according to claim 13 and 29, in the Delevoping cartridge according to claim 10 and 26 respectively, first and contact portion can be extended from the first side wall along first axle on the direction with respect to second sidewall.

[0074] owing to this structure, the feed-in member of image forming apparatus can reliably contact with contact site.When guaranteeing the development roll shaft with respect to the level and smooth rotation of developer roll shaft supporting part, the developer roll shaft supporting part can reliably contact the development roll shaft.

[0075] according to claim 15,31 and 45, the Delevoping cartridge according to claim 1,16 and 32 can also comprise the donor rollers that is configured to developer is provided to developer roll respectively.Donor rollers can be arranged to parallel with developer roll.Donor rollers can comprise supply roll shaft that is configured to rotation during developing and the donor rollers member that is configured to developer is provided to developer roll.The donor rollers member can be arranged to be supplied with around the roll shaft.Electrode can be equipped with the part that is configured to around the circumferential section of supplying with roll shaft.

[0076] owing to this structure, electric power also can be provided to the supply roll shaft.

[0077] according to claim 64, according to claim 10-13,15,26-29,31, among the 41-43 and 45 in the Delevoping cartridge of any one, be configured to support the development roll shaft bearing can with electrode separation be arranged on the first side wall.

[0078] owing to this structure, the development roll shaft can be by this bearings.Therefore, the developer roll shaft supporting part can reliably contact the development roll shaft.Guarantee the level and smooth rotation of development roll shaft simultaneously.Even when bearing be not be used as electrode when adopting electric power still can be provided to the development roll shaft reliably.

[0079] according to claim 14,30 and 44, respectively according to Claim 8, in 26 and 40 the Delevoping cartridge, electrode can comprise by screw element and is attached to second portion on the first side wall.The first side wall can be equipped with the screw element acceptance division, and this screw element acceptance division is configured to make second portion to center on the screw element acceptance division and screw element is screwed in the screw element acceptance division.Distance between the center of screw element acceptance division and the developer roll axis be different from by second portion around the zone the center and by first around the center in zone between distance, the screw element acceptance division is configured to be enclosed in the second portion, and the circumferential section of development roll shaft is enclosed in the first.

[0080] owing to this structure, sidewall, first can reliably contact the development roll shaft.

[0081], can prevent that electrode is in unsuitable position according to claim 1.Electric power just can stably provide to the development roll shaft like this.

[0082], can prevent that electrode is in unsuitable position according to claim 16.Like this, electric power can stably be provided to the development roll shaft.

[0083], can prevent that electrode is in unsuitable position according to claim 32.Electric power just can stably provide to the development roll shaft like this.

[0084] according to claim 46, when developer roll was supported securely, electric power can be provided to the developer roll member with being stabilized.

[0085] according to claim 47, when developer roll was supported securely, electric power can provide to the developer roll member with being stabilized.

[0086] according to claim 48, developer roll can be assembled effectively or is fixed on the adjacent members.When developer roll was supported securely, electric power can stably be provided to the developer roll member.

[0087] according to claim 49, developer roll can be assembled effectively or is fixed on the adjacent members.When developer roll was supported securely, electric power can stably provide to the developer roll member.

[0088] according to claim 50, electric power can be provided to electrode with being stabilized.

[0089] according to claim 51, electrode can form Any shape, and electric power can stably provide to the developer roll member.

[0090] according to claim 52, electric power can be provided to the developer roll member from electrode with being stabilized.

[0091] according to claim 53, electric power can more stably provide to the developer roll member from electrode.

[0092] according to claim 54, electric power can be provided to the developer roll member from electrode more reliably.

[0093] according to claim 55, electric power can stably provide to the development roll shaft from electrode.

[0094] according to claim 56, the relative position of electrode and development roll shaft can freely be selected.Like this, after design was improved effectively, electric power can be provided to the developer roll member from electrode reliably.

[0095] according to claim 3,19 and 33, developer roll can be by other member supports.Like this, employed number of components and cost can reduce.

[0096] according to claim 57, first columnar portion can receive the driving force of coming self-driven coupling connection portion reliably.Second columnar portion can be sent to driving force the development roll shaft reliably.

[0097] according to claim 58, driving force can receive from driving coupling connection portion reliably.

[0098] according to claim 59, driving force can be received from driving coupling connection portion reliably.

[0099] according to claim 4,20 and 34, developer roll can rotate reliably, and the development roll shaft can be brought into play guiding function between the Delevoping cartridge installation period.Like this, employed number of components and cost can be reduced.

[00100] according to claim 5,21 and 35, donor rollers can be rotated reliably.In addition, developer roll and donor rollers can be rotated effectively.

[00101] according to claim 6,22 and 36, electric power also can be provided to donor rollers.

[00102] according to claim 7,23,37, development roll shaft and supply roll shaft can be reliably respectively by the first and second member supporting.

[00103] according to Claim 8,24 and 38, electric power can provide to electrode from image forming apparatus reliably.

[00104], has only Delevoping cartridge to change with new Delevoping cartridge, and do not need to consider the life-span of Electrifier frame, photoreceptor according to the amount of residual developer according to claim 60.The sensitization box can be changed according to life-span of Electrifier frame, photoreceptor, and did not need to consider the amount of the residual developer that comprises in the Delevoping cartridge.

[00105] according to claim 61, along with contact reliably between developer roll and the Electrifier frame, photoreceptor, the electrostatic latent image that is formed on the Electrifier frame, photoreceptor can develop reliably by the developer that carries on the developer roll.

[00106], can guarantee the reliable contact between developer roll and the Electrifier frame, photoreceptor according to claim 62.

[00107], can prevent further that electrode is in unsuitable position according to claim 39.Like this, electric power can stably provide to the development roll shaft.

[00108] according to claim 63, driving force can receive from driving coupling connection portion reliably.

[00109] according to claim 9,25 and 40, electric power can provide to the development roll shaft from the feed-in member reliably by contact portion and first.

[00110] according to claim 10,26 and 41, first can reliably contact with the development roll shaft.

[00111] according to claim 11,27 and 42, electrode can reliably easily be attached on the first side wall by screw element.

[00112] according to claim 12,28 and 43, first can reliably contact with the development roll shaft, guarantees the level and smooth rotation of development roll shaft with respect to first simultaneously.

[00113] according to claim 13 and 29, the feed-in member of image forming apparatus can contact reliably with contact portion.Guaranteeing the development roll shaft with respect to first in the steady rotation, first can contact reliably with the development roll shaft.

[00114] according to claim 15,31 and 45, electric power also can be provided to the supply roll shaft.

[00115] according to claim 64, when guaranteeing that the development roll shaft steadily rotates, first (can contact the development roll shaft reliably.Even when bearing did not use as electrode, electric power still can provide to the development roll shaft reliably.

[00116] according to claim 14,30 and 44, first can reliably contact with the development roll shaft.

Brief description of drawings

[00117] each illustrative aspect will be described in detail with reference to following accompanying drawing, wherein:

[00118] Fig. 1 be according to illustrative aspect as image forming apparatus the side cross-sectional, view of general structure of laser printer;

[00119] Fig. 2 is the side cross-sectional, view that is used in the handle box in as shown in Figure 1 the laser printer according to illustrative aspect;

[00120] Fig. 3 is the side cross-sectional, view that is used in the bulging box in as shown in Figure 1 the laser printer according to illustrative aspect;

[00121] Fig. 4 is the side cross-sectional, view that is used in the Delevoping cartridge in as shown in Figure 1 the laser printer according to illustrative aspect;

[00122] Fig. 5 is the skeleton view of the Delevoping cartridge seen from last back left side;

[00123] Fig. 6 is the skeleton view of the Delevoping cartridge seen from right side, last back;

[00124] Fig. 7 is the skeleton view of the Delevoping cartridge that the left side is seen before down;

[00125] Fig. 8 is the skeleton view of the Delevoping cartridge seen from following preceding right side;

[00126] Fig. 9 is the planimetric map of the Delevoping cartridge seen from rear side;

[00127] Figure 10 is the planimetric map of the Delevoping cartridge seen from the front side;

[00128] Figure 11 is the planimetric map of the Delevoping cartridge seen from the top;

[00129] Figure 12 is the planimetric map of the Delevoping cartridge seen from the bottom;

[00130] Figure 13 is the left side view that gear cap is attached at the Delevoping cartridge on the Delevoping cartridge;

[00131] Figure 14 is the left side view of gear cap from the Delevoping cartridge of Delevoping cartridge dismounting;

[00132] Figure 15 is the right side view of Delevoping cartridge;

[00133] Figure 16 is the skeleton view of the bulging box seen from last back left side;

[00134] Figure 17 is the skeleton view of the handle box seen from the right side of going forward;

[00135] Figure 18 A and 18B provide demonstration according to the skeleton view of the part of the development axle of illustrative aspect and the side view of the axle that develops respectively;

[00136] Figure 19 is the left side view corresponding to the Delevoping cartridge of Figure 13 according to illustrative aspect, and contact plate is outstanding at the Width of Delevoping cartridge;

[00137] Figure 20 is the right side view corresponding to the Delevoping cartridge of Figure 15 according to illustrative aspect, and it is outstanding at the Width of Delevoping cartridge to be driven coupling connection portion;

[00138] Figure 21 is the skeleton view of seeing from right side, last back corresponding to the Delevoping cartridge of Fig. 6 according to illustrative aspect, and electrode member is removed from Delevoping cartridge;

[00139] Figure 22 is the skeleton view of seeing from preceding right side down corresponding to the Delevoping cartridge of Fig. 8 according to illustrative aspect, and electrode member is removed from Delevoping cartridge;

[00140] Figure 23 is the right side view corresponding to the Delevoping cartridge of Figure 15;

[00141] Figure 24 is the sectional view along the Delevoping cartridge of the A-A line of Figure 23;

[00142] Figure 25 is the sectional view along the Delevoping cartridge of the B-B line of Figure 23.

Embodiment

[00143] notes, will set forth the various relation between each ingredient in the ensuing description.Notice that unless make separate stipulations, these relations generally can be direct or indirect, and the purpose of this instructions is not to limit this relation in this aspect.

[00144] explains each illustrative aspect below with reference to the accompanying drawings.Fig. 1 is the side cross-sectional, view according to the general structure of the laser printer that Delevoping cartridge is installed therein of illustrative aspect.Fig. 2 is the side cross-sectional, view that is used in the handle box in as shown in Figure 1 the laser printer according to illustrative aspect, Fig. 3 is the side cross-sectional, view that is used in the bulging box in as shown in Figure 1 the laser printer according to illustrative aspect, and Fig. 4 is the side cross-sectional, view that is used in the Delevoping cartridge in as shown in Figure 1 the laser printer according to illustrative aspect.

[00145] as shown in fig. 1, laser printer 1 comprises main casing 2, the feed-in unit 4 of paper 3 is provided and the image formation unit 5 of image is provided on the paper 3 that is provided.Feed-in unit 4 and image formation unit 5 all are arranged in the main casing 2.

[00146] (1) main casing

Opening 6 is formed on the front side (Fig. 1 right side) of main casing 2, and handle box 20 inserts or shift out main casing 2 by this opening 6.The protecgulum 7 that is used for opening and closing opening 6 is arranged on the front side of main casing 2.Protecgulum 7 usefulness lid axle 8 pivotally supports, and lid axle 8 is inserted into the bottom of protecgulum 7.When protecgulum 7 when lid axle 8 pivots are closed, opening 6 is by protecgulum 7 closures.When protecgulum 7 when lid axle 8 pivots are opened, opening 6 is opened.Like this, handle box 20 can insert or shift out main casing 2 by opening 6.

[00147] in the following description, when handle box 20 was installed in the main casing 2, the side that protecgulum 7 is set was defined as the front side of laser printer 1/ handle box 20 (comprising Delevoping cartridge 30), was defined as rear side with respect to a side of front side.

[00148] (2) feed-in unit

As shown in fig. 1, feed-in unit 4 is arranged at the bottom in the main casing 2, paper provides dish 9 to be slidably mounted in the main casing 2 along fore-and-aft direction, separate roller 10 and separating pad 11 are arranged at the last leading section that paper provides dish 9, and pick-up roller 12 is arranged at the rear side (upstream side of separating pad 11 on the paper feed-in direction) of separate roller 10.Feed-in unit 4 also comprises the paper powder kicker cylinder 13 of the upper forepart (downstream of separate roller 10 on the paper feed-in direction) that is arranged at separate roller 10 and faces the pinch roll 14 that paper powder kicker cylinder 13 is provided with.

[00149] feed-in unit 4 comprises a pair of paper feed-in path downstream place that is positioned at the U-shaped part, is arranged at the registration rollers 15 of handle box 20 belows during installation, and this U-shaped part curves the U-shaped towards rear side near paper powder kicker cylinder 13.Being configured to thereon the paper installing plate 16 of stack paper 3 is arranged at paper and provides in the dish 9.Paper installing plate 16 is basically parallel to the base plate that paper provides dish 9 at it, and installation site and paper installing plate 16 that its front end of while is positioned at lower position are an angle, and its front end of while providing between the position of higher position is provided can rotates by pivot.

[00150] provide dish 9 front end that a lever 17 that is used to promote the front end of paper installing plate 16 is set at paper.Lever 17 is supported on leading section following of paper installing plate 16 so that rotate around lever shaft 18 pivots that are arranged on lever 17 rear ends.Lever 17 can be basically parallel to front end pivot rotation between the angle position that promotes paper installing plate 16 that paper provides parallel position with the lever 17 of dish 9 base plate at the front end of lever 7.When driving force was input to lever shaft 18, lever 17 rotated around lever shaft 18 pivots.Correspondingly, the front end of lever 17 lifts the front end of paper installing plate 16 so that the paper installing plate is moved to the position is provided.

[00151] be positioned at when the position is provided when paper installing plate 16, the paper 3 of the top on the paper installing plate 16 is pressed against to pick-up roller 12, and by the rotation feed-in separate roller 10 of pick-up roller 12 and the separation point position between the separating pad 11.

[00152] when paper provided dish 9 to be removed from main casing 2, paper installing plate 16 was placed in the installation site.When paper installing plate 16 is placed in the installation site, a stacker can be opened and be installed on the paper installing plate 16.

[00153] picked roller 12 separates one by one by the rotation of separate roller 10 when the paper 3 of separation point position feed-in is sandwiched between separate roller 10 and the separating pad 11.Paper powder kicker cylinder 13 that the paper 3 of feed-in is eliminated by paper powder or fiber and the part between the pinch roll 14.Then, paper 13 along U-shaped paper feed-in approach to registration rollers 15 feed-ins.

[00154] registration rollers 15 alignment paper 3 or minimizing paper 3 is crooked.Registration rollers 15 is fed into paper 3 as the photoelectric conducting drum 28 of Electrifier frame, photoreceptor and the transfer position between the transfer roll 31 then, and in transfer position, the toner image on the photoelectric conducting drum 28 is transferred on the paper 3.

[00155] image formation unit

Image formation unit 5 comprises scanning element 19, handle box 20 and fixation unit 21.

[00156] (a) scanning element

Retouch the upper position that the unit is arranged on main casing 2.Scanning element 19 comprises lasing light emitter (not shown), the polygon mirror 22 that is driven in rotation, f θ lens 23, catoptron 24, lens 25 and catoptron 26.Shown in the dotted line as shown in fig. 1, pass f θ lens 23 based on view data emitted laser bundle after by polygon mirror 22 deflections from lasing light emitter.Be reflected mirror 22 reflection and pass lens 25 and arrive catoptrons 26 of laser beam then, in this place's laser beam downwards towards the surface curvature of the photoelectric conducting drum 28 of handle box 20.The surface of photoelectric conducting drum 28 is just by laser beam irradiation like this.

[00157] (b) handle box

Handle box 20 removably is installed in by opening 6 and is positioned at scanning element 19 belows in the main casing 2.As shown in Figure 2, handle box 20 comprises as the bulging box 27 of sensitization box and removably is placed in Delevoping cartridge 30 in the bulging box according at least one illustrative aspect of the present invention.

[00158] (b-1) rouses box

As shown in Figure 3, drum box 27 comprises drum frame 58, photoelectric conducting drum 28, grid-control formula corona charging device 29, transfer roll 31 and the cleaning element 32 that is arranged in the drum frame 58.

[00159] drum frame 58 comprises upper frame 141 that supports charger 29 and cleaning element 32 and the underframe 142 that supports photoelectric conducting drum 28 and transfer roll 31.

[00160] shown in Fig. 3 and 16, underframe 142 is equipped with integrally formed so that the diapire of upward opening 143, left and right sides sidewall 144L, 144R, antetheca 15 and rear wall 146.Diapire 143 is rectangular plate shape basically.The two ends, the left and right sides that left and right sides sidewall 144L, 144R are arranged in diapire 143 face with each other.Antetheca 145 is arranged on the front end of diapire 143.Rear wall 146 is arranged on the rear end of diapire 143.

[00161] front portion of underframe 142 is defined as installing Delevoping cartridge 30 in Delevoping cartridge mounting portion 147 wherein.The rear portion of underframe 142 is defined as drum support portion 148, and in this drum support portion 148, underframe 142 and upper frame 141 face one another in vertical direction, and photoelectric conducting drum 28 is supported at this place simultaneously.

[00162] as shown in Figure 3, photosensitive drums 28 comprises cylinder drum body 33 and metal drum axle 34, and this drum body 33 has the photoconductive layer of being made by for example polycarbonate that can fill positive electricity in its outmost surface, the drum axle 34 axis places that are axially disposed within bulging body 33 along drum body 33.Drum axle 34 is supported by left and right sides sidewall 144L, the 144R of underframe 142.Drum body 33 rotatably is supported on the drum axle 34.During image forms, by rousing axle 34 rotations from motor (not shown) input drive force photoelectric conducting drum 28.

[00163] grid-control formula corona charging device 29 place, rear portion on photoelectric conducting drum 28 is supported by upper frame 141.Grid-control formula corona charging device 29 be configured in the face of photoelectric conducting drum 28 and and certain distance is arranged between it, thereby prevent grid-control formula corona charging device 29 contact photoelectric conducting drums 28.Charger 29 comprise in the face of photoelectric conducting drum 28 and and its discharge silk 67 of certain distance setting is arranged and is arranged at and be used between discharge silk 67 and the photoelectric conducting drum 28 control from the grid 68 of discharge silk 67 to the charge volume of photoelectric conducting drum 28.During image formed, bias voltage was applied on the grid 68.High voltage is applied on the discharge silk 67 simultaneously, to produce corona discharge from discharge silk 67.Like this, the surface of photoelectric conducting drum 28 is recharged device 29 and fills with positive electricity equably.

[00164] transfer roll 31 is arranged on photoelectric conducting drum 28 belows in the underframe 142.Transfer roll 31 contacts photoelectric conducting drum 28 to form the roll gap part between transfer roll 31 and photoelectric conducting drum 28 in vertical direction.Transfer roll 31 comprises metal transfer printing roll shaft 56, and the rubber roll body 57 that this roll shaft 56 is made by conductive rubber material covers.Transfer printing roll shaft 56 is rotatably supported by left and right sides sidewall 144L, the 144R of underframe 142.In toner being transferred to the process (image forming course) of paper 3, driving force is imported with rotation transfer roll 31 from the motor (not shown).In transferring to the process of paper 3, toner applies transfer bias to transfer roll 31.

[00165] cleaning element 32 is supported to face drum 28 by upper frame 141 at photosensitive drums 28 rears.Cleaning element 32 comprises the cleaning brush 65 of the paper powder that is used to catch on the photoelectric conducting drum 28 or fiber and supports the back up pad 66 of cleaning brushs 65 with respect to cleaning brush 65 (photoelectric conducting drum 28 rears) in the face of photoelectric conducting drum 28.

[00166] cleaning brush 65 comprises the nonwoven fibrous web of fixing many conductive fiber shape bristles on it.Cleaning brush 65 is attached on the back up pad 66 by double sticky tape.Cleaning brush 65 is configured to contact photoelectric conducting drum 28.Back up pad 66 is supported by upper frame 141 when supporting cleaning brush 65.

[00167] direction that is parallel to the drum axle 34 of photoelectric conducting drum 28 can be called " first direction ".Direction perpendicular to sensing main casing 2 front sides of first direction can be described as " second direction ".In Delevoping cartridge installation portion 147, be formed at the basic core on first direction of antetheca 145 at the handle 149 that drum box 27 is installed or period for removal is held.

[00168] pressure lever 150 is arranged on each end of antetheca 145 with respect to first direction, and the Delevoping cartridge 30 that this lever will be installed in the Delevoping cartridge installation portion 147 is pressed to rear side, thereby firmly developer roll 38 is pressed against on the photoelectric conducting drum 28.Each pressure lever 150 is all made by slab and is seen from the side and forms triangle.The lower end of each pressure lever 150 is all pivotally supported by the stationary shaft (not shown) that extends internally from left and right sides sidewall.

[00169] compression spring (not shown) is arranged between each pressure lever 150 and the antetheca 145.Therefore, each pressure lever 150 expulsive force of always being compressed spring is pressed to the back or is receded.

[00170] locking lever 151 is arranged on a sidewall (right side wall 144R) upward and between locking lever 151 and a pressure lever 150 has a segment distance on fore-and-aft direction.Locking lever 151 is seen as the shape of basic rectangle from the side.Locking lever 151 is equipped with the flexible part 152 that extends from locking lever 151 downwards.Locking lever 151 by right side wall 144R by be formed on diapire 143 on the flexible part 152 that engages of rib (not shown) pivotally support.

[00171] at left and right sides sidewall 144L, in the Delevoping cartridge mounting portion, rear end 147 of 144R gathering sill 153 is set, ring element 116 and development roll shaft shielding part 118 (hereinafter will narrate) guide so that Delevoping cartridge 30 is fit in the Delevoping cartridge installation portion 147 along this gathering sill 153.As shown in Fig. 2 and 3, on second direction, form mounting base 155 in the Delevoping cartridge installation portion 147 of diapire 143 cores before slightly, the mounting portion 133 of Delevoping cartridge 30 is placed on the mounting base 155.

[00172] (b-2) Delevoping cartridge

Shown in Figure 16 and 17, when handle box 20 and main casing 2 separate or when main casing 2 was removed, Delevoping cartridge 30 removably was installed in the Delevoping cartridge installation portion 147 of underframe 142.As shown in Figure 4, Delevoping cartridge 30 comprises developing frame 36 and the donor rollers 37, developer roll 38 and the layer thickness adjustment sheet 39 that are arranged in the developing frame 36.

[00173] developing frame 36 forms aft-opening case shape.Demarcation strip 40 is set in developing frame 36 and is separated toner chamber 41 and the development chamber 42 that plate 40 separates.Demarcation strip 40 is arranged on the centre of developing frame 36 on the second direction, separates developing frame 36 at fore-and-aft direction.Opening 43 is formed at the middle part of demarcation strip 40 on the vertical direction.

[00174] toner chamber 41 is limited to the front side of being separated by demarcation strip 40 in the inner space of developing frame 36.The non-magnetic mono-component toner as the filled positive electricity of developer is contained in toner chamber 41.Toner is the polymerized toner that for example obtains by the polymerization copolymerization polymerisable monomer that uses such as suspension polymerization.Polymerisable monomer can be such as cinnamic styrene-based monomers, or such as acrylic acid, alkyl acrylic, the acrylic acid acrylic monomer of alkyl methyl.The particle of this polymerized toner has spherical form substantially, helps high quality images formation thereby so just make polymerized toner have excellent flowing.

[00175] toner and paraffin and mix such as the colorant of carbon black and such as the external additive of silica are used to improve the flowability of toner.The mean grain size of toner is greatly between 6-10 μ m.

The toner that passes through when [00176] toner is provided in the toner chamber 41 is loaded on left and right sides sidewall 69L, the 69R (description) of interruption-forming developing frame 36 in toner chamber 41.As shown in figure 15, toner is loaded mouth by 35 coverings of toner lid.

[00177] is used for detecting each left and right sides sidewall 69L that the toner detection window 44 that remains the toner amount is arranged on toner chamber 41 developing frames 36, on the 69R.Toner detection window 44 is formed at the left and right sides sidewall 69L of developing frame 36, near the last demarcation strip 40 of 69R, faces with each other along the Width (perpendicular to fore-and-aft direction and vertical direction) of Delevoping cartridge 30.As Figure 13, shown in 14 and 15,, form each toner detection window 44 in the opening that forms among the 69R by transparent plectane being embedded the left and right sides sidewall 69L of developing frame 36.

[00178] stirrer 45 that stirs the toner in the toner chamber 41 is set in toner chamber 41.Stirrer 45 is equipped with rotating shaft of stirrer 46 and agitating member 47.Rotating shaft of stirrer 46 rotatably is supported on the basic centre in toner chamber 41 by the left and right sides sidewall 69L69R of developing frame 36.Agitating member 47 is arranged on the rotating shaft of stirrer 46.The driving force of motor (not shown) is input to rotating shaft of stirrer 46 and makes stirrer 45 rotations in (image formation) process of developing.

[00179] stirrer 45 is equipped with scraper 48.Each scraper 48 is arranged at rotating shaft of stirrer 46 with respect on its each axial end.When rotating shaft of stirrer 46 rotations, each scraper 48 pivotally moves around rotating shaft of stirrer 46 along the circumferencial direction in the toner chamber 41, with the left and right sides sidewall 69L of cleaning developing frame 36, the toner detection window 44 of the last setting of 69R.Like this, clean toner detection window 44 by scraper 48.

[00180] development chamber 42 is limited at the rear side of being separated by demarcation strip 40 in the inner space of developing frame 36.Donor rollers 37 is arranged on middle diapire 75 (back detailed description) upper shed 43 back.Donor rollers 37 comprises the metal supply roll shaft 50 that is covered by sponge roll body 51, and sponge roll body 51 is made of the conductive foaming material as the donor rollers member.Supply with the left and right sides sidewall 69L of roll shaft 50 by developing frame 36 in the development chamber 42,69R rotatably supports.Each end of supplying with roll shaft 50 is all from left and right sides sidewall 69L, and 69R stretches out.The driving force of motor (not shown) is input to and supplies with roll shaft 50 so that donor rollers 37 rotations in (image formation) process of developing.In (image formation) process of developing, apply and be applied to the same bias voltage of development bias voltage of developer roll 38 to donor rollers 37.

[00181] as shown in Figure 4, developer roll 38 is arranged on donor rollers 37 rears in the development chamber 42, and diapire 76 tops, back (below have associated description).Developer roll 38 contact donor rollers 37, thus certain pressure applied each other.Developer roll 38 comprises metal development roll shaft 52, covers the rubber roll body made from conductive rubber material 53 as the developer roll member on the metal development roll shaft 52.Development roll shaft 52 is parallel to supplies with roll shaft 50 extensions.Development roll shaft 52 is by the left and right sides sidewall 69L of developing frame 36 in the development chamber 42, and 69R (below have associated description) rotatably supports.

[00182] each end of development roll shaft 52 is all from left and right sides sidewall 69L, 69R stretch out (following detailed description).Rubber roll body 53 is made of conductive polyurethane that contains meticulous carbon particulate or silicon rubber.The surface of rubber roll body 53 scribbles urethane rubber or the silicon rubber that contains fluorine.In (image formation) process of developing, the driving force of motor (not shown) is input to development roll shaft 52 and makes developer roll 38 rotations.In (image forming course) process of developing, apply the development bias voltage to developer roll 38.

[00183] layer thickness adjustment sheet 39 comprises the pressure portion 55 that the cutter blade 54 made with the metal spring sheet and cross section semicircular in shape are made with electrically insulating silicone rubber.Pressure portion 55 is arranged at the free end of cutter blade 54.The cardinal extremity relative with free end of the cutter blade 54 of layer thickness adjustment sheet 39 is supported on developer roll 38 tops in the blade attachment 77 (below have associated description) by attachment members 134.The free end of cutter blade 54 is downward-sloping and extend towards donor rollers 37 forward.The elastic force of cutter blade 54 presses pressure portion 55 to developer roll 38.

[00184] (b-3) develops and transfer operation

In image forming course, the driving force of motor (not shown) is input to rotating shaft of stirrer 46, rotating shaft of stirrer 46 rotations, thus agitating member 47 is pivotable around the circumferencial direction of rotating shaft of stirrer 46 in toner chamber 41.Correspondingly the toners in the toner chamber 41 are stirred member 47 and stir, and the middle position of the in the vertical direction by being formed on demarcation strip 40 42 is discharged towards the development chamber with the opening 43 that causes fluid at fore-and-aft direction and be communicated with.

[00185] the sponge roll body 51 of 42 toners of discharging according to the rotation of supplying with roll shaft 50 and by donor rollers 37 provides rubber roll body 53 to developer roll 38 towards the development chamber to pass opening 43.At this moment, toner by donor rollers 37 sponge roll body 51 and the friction between the rubber roll body 53 of developer roll 38 filled positive electricity.Provide between the rubber roll body 53 of toner to the rubber roll body 53 of developer roll 38 and pass through according to the pressure portion 55 that is rotated in layer thickness adjustment sheet 39 of development roll shaft 52 and developer roll 38.The toner of the thin layer that is conditioned as thickness is carried on the rubber roll body 53 of developer roll 38.

[00186] as shown in Figure 2, when photoelectric conducting drum 28 rotations, positive electricity is filled equably by grid-control formula corona charging device 29 in the surface of drum body 33.Cross the surface of bulging body 33 then from the laser beam high-velocity scanning of scanning element 19, thereby form corresponding to the electrostatic latent image that will be formed on the image on the paper 3 on drum body 33 surfaces.

[00187] next, when on the rubber roll body 53 that is carried at developer roll 38 and the toner that is filled positive electricity when contacting with the bulging body 33 of photoelectric conducting drum 28 along with the rotation of development roll shaft 52, toner is provided to and is formed at bulging body 33 lip-deep electrostatic latent images, that is to say, provide to being exposed under the laser beam of drum body 33 surfaces, potential energy is lower than the part of the remainder of evenly being filled with positive electricity.Like this, just can see the electrostatic latent image on the bulging body 33.Like this, as seen the electrostatic latent image that rouses on the body 33 becomes.Like this, on drum body 33, form toner image by discharged-area development.

[00188] then, when the paper that transported by registration rollers 15 3 during by the transfer position between the rubber roll body 57 of drum body 33 and transfer roll 15, by apply transfer bias on the rubber roll body 57 of transfer roll 31, the toner image that bulging body 33 surfaces are carried is transferred on the paper 3.Have the paper 3 that is transferred to the toner image on it and be fed into fixation unit 21.

[00189] remains in rubber roll body 53 collections that bulging body 33 lip-deep toners are developed roller 38 after the toner image transfer printing.Be attached to of the bulging body 33 surface removings of bulging body 33 lip-deep paper powder or the fiber cleaning brush 65 by cleaning element 32 owing to contacting after the toner image transfer printing from photoelectric conducting drum 28 with paper.

[00190] (c) fixation unit

As shown in Figure 1, fixation unit 21 is arranged on the back of handle box 20, and between the photoelectric conducting drum 28 of handle box 20 and the fixation unit 21 certain distance is arranged on the direction of basic horizontal.Fixation unit 21 comprises unit framework 59, and is arranged on warm-up mill 60 and pressure roll 61 in the unit framework 59.

[00191] warm-up mill 60 comprises that the surface scribbles the metal tube of fluorocarbon resin and embeds in the metal tube and is used for the Halogen lamp LED that heat applies.Warm-up mill 60 rotates at (during the image formation) during photographic fixing input power by motor (not shown).

[00192] thus pressure roll 61 is arranged on warm-up mill 60 belows and the warm-up mill 60 relative warm-up mills 60 that press.Warm-up mill 61 comprises the metal roller shaft of the rubber roll body covering that is made of elastomeric material.Pressure roll 61 is driven because of the rotation of warm-up mill 60.

[00193] in fixation unit 21, in the time of between paper 3 is by warm-up mill 60 and pressure roll 61, is transferred to toner image on the paper 3 at the transfer position place by hot photographic fixing.Having the paper output panel 62 that the paper 3 of the toner image of photographic fixing on it forms on main casing 2 top surfaces transmits.Form basically U-shaped from fixation unit 21 to the paper outgoing route of paper output panel 62, turn to the front side from fixation unit 21.Feed-in roller 63 is arranged in the paper outgoing route.Outlet roller 64 is arranged on the downstream end place of paper outgoing route.

[00194] being subjected to the paper 3 that hot photographic fixing handles at fixation unit 21 is transported on the paper outgoing route.Paper 3 is fed into outlet roller 64 by feed-in rod 63.Paper 3 is output roller 64 and outputs on the paper output panel 62 then.

[00195] 2. Delevoping cartridge

Fig. 5 is the skeleton view of the Delevoping cartridge seen from last back left side; Fig. 6 is the skeleton view of the Delevoping cartridge seen from right side, last back; Fig. 7 is the skeleton view of the Delevoping cartridge that the left side is seen before down; Fig. 8 is the skeleton view of the Delevoping cartridge seen from following preceding right side; Fig. 9 is the planimetric map of the Delevoping cartridge seen from rear side; Figure 10 is the planimetric map of the Delevoping cartridge seen from the front side; Figure 11 is the planimetric map of the Delevoping cartridge seen from the top; Figure 12 is the planimetric map of the Delevoping cartridge seen from the bottom; Figure 13 is the left side view that gear cap is attached to the Delevoping cartridge on the Delevoping cartridge; Figure 14 is the left side view that gear cap is not attached to the Delevoping cartridge on the Delevoping cartridge; Figure 15 is the right side view of Delevoping cartridge; Figure 19 is corresponding to the contact plate of Figure 13 left side view at the outstanding Delevoping cartridge of the Width of Delevoping cartridge; Figure 20 is corresponding to the coupling connection portion that is driven of Figure 15 right side view at the outstanding Delevoping cartridge of the Width of Delevoping cartridge;

[00196] 4-15 below with reference to the accompanying drawings, 19 and 29 are described in detail Delevoping cartridge 30.

[00197] (1) developing frame

As shown in Figures 4 and 5, developing frame 36 comprises integrally formed a pair of left and right sides sidewall 69L, 69R, upper wall 70, diapire 71 and antetheca 72.Developing frame 36 forms the case shape, forms after-opening portion 73 above.

[00198] left and right sides sidewall 69L, 69R are tabulars.As shown in figure 11, left and right sides sidewall 69L, 69R are arranged in first direction toward each other so that toner chamber 41 and development chamber 42 are arranged on left and right sides sidewall 69L, between the 69R.As Figure 14, shown in 15, left and right sides sidewall 69L, 69R is near each end in toner chamber 41 and development chamber 42.As Fig. 4, shown in 11, upper wall 70 is tabular.Upper wall 70 is connected to left and right sides sidewall 69L, thereby extend between the 69R at the left and right sides sidewall 69L upper end of 69R.The top in upper wall 70 sealing toner chambeies 41 and development chamber 42.

[00199] as shown in Fig. 4 and 7, diapire 71 is the tabular of bending.Diapire 71 is connected to left and right sides sidewall 69L, thereby extend between the 69R at the left and right sides sidewall 69L lower end of 69R.The bottom in diapire 71 closed toner chambeies 41 and development chamber 42.Diapire 71 comprises integrally formed preceding diapire 74, middle diapire 75 and back diapire 76.

[00200] preceding diapire 74 forms the shape of the basic semi-circular cross-section relevant with the rotate path of stirrer 45 in the toner chamber 41.

[00201] diapire 74 rears before diapire 75 is arranged in.In diapire 75 form the shape of the basic semi-circular cross-section relevant with donor rollers 37 in the Delevoping cartridge 42.

[00202] back of diapire 75 during back diapire 76 is arranged on.The side direction rear side is downward-sloping in the past for back diapire 76.

[00203] antetheca 72 is tabular.Antetheca 72 is connected to left and right sides sidewall 69L, the front end of 69R, thus at left and right sides sidewall 69L, extend between the 69R.The front portion in antetheca 72 sealing toner chambeies 41.

[00204] as shown in Figure 4, blade attachment 77 is arranged on left and right sides sidewall 69L, sidewall 69L in the left and right sides between the 69R, the last rear portion of 69R.Blade attachment 77 forms shape that the lateral section is a fundamental triangle so that the width of blade attachment 77 narrows down to downside.The rear end face of blade attachment 77 forms inclined surface, tilts towards the front side to the lower end from the upper end of blade attachment 77.

[00205] as shown in Fig. 4 and 9, the cardinal extremity of cutter blade 54 is fixed to by attachment members 134 on the rear end face of blade attachment 77, and containment member 135 is arranged between the cardinal extremity of the rear end face of blade attachment 77 and cutter blade 54.Containment member 135 is arranged on the rear end face of blade attachment 77, leaks from the rear end face and the part between the attachment members 134 of blade attachment 77 to prevent toner.

[00206] attachment members 134 comprises the preceding supporting member 138 of shape as plate, the back supporting member 136 and the screw element 137 of the L shaped substantially shape in cross section.Preceding supporting member 138 is arranged on the rear side of containment member 135.The rear side of supporting member 138 before the cardinal extremity of cutter blade 54 is arranged on.Back supporting member 136 is arranged on the rear side of the cardinal extremity of cutter blade 54.Screw element is upward through back supporting member 136 in front and back, the cardinal extremity of cutter blade 54 and preceding supporting member 138, thus with back supporting member 136, the cardinal extremity of cutter blade 54 and preceding supporting member 138 integral body tighten together.By retaining thread spare 139 cardinal extremity of cutter blade 54 is fixed to blade attachment 77, the cardinal extremity and the attachment members 134 of cutter blade 54 are clipped in containment member 135 between the cardinal extremity and blade attachment 77 of cutter blade 54 simultaneously.

[00207] (0109) as shown in Figures 4 and 5, after-opening portion 73 is by the back supporting member 136 of attachment members 134, left and right sides sidewall 69L, the rear end of the rear end of 69R and back diapire 76 limits.After-opening portion 73 is at the upwardly extending rectangle basically of first party.The part of developer roll 38 exposes from after-opening portion 73.More specifically, as shown in Figure 13, see from the side that it is outwards outstanding from the inside of developing frame 36 that a part of developer roll 38 is passed after-opening portion 73.

[00208] as shown in Figure 9, developer roll 38 is arranged to make each end of development roll shaft 52 all to be supported on relative sidewall 69L rotatably, among the 69R.Ring element 116 is installed in from an end of the development roll shaft 52 of left side wall 69L extension.Shown in Fig. 5 and 7, the end of development roll shaft 52 is inserted in the development roll shaft insertion section 111 of the gear cap 93 (following detailed description) that is arranged on left side wall 69L one side with ring element 116.The end of development roll shaft 52 rotatably is supported in the development roll shaft insertion section 111 of gear cap 93.

[00209] as shown in Fig. 6 and 8 and as described below, is arranged at bearing components 201 on right side wall 69R one side and is installed on the other end of the development roll shaft 52 that extends from right side wall 69R.The other end of development roll shaft 52 passes bearing components 201 and extends.Electrode member 117 is arranged on bearing components 201 1 sides.The development roll shaft shielding part 118 that is formed in the electrode member 117 is installed on the other end of the development roll shaft 52 that passes bearing components 201.Development roll shaft 52 is supported in the development roll shaft shielding part 118 of electrode member 117 rotatably.Like this, the end of developer roll 38 is supported by the development roll shaft insertion section 111 of gear cap 93 and the development roll shaft shielding part 118 of electrode member 117.

[00210] when Delevoping cartridge 30 is installed in the Delevoping cartridge installation portion 147, ring element 116 and development roll shaft shielding part 118 are by the sidewall 144L that is formed on Delevoping cartridge installation portion 147, and the guiding groove 153 among the 144R guides, as shown in figure 17.Like this, just can guarantee that Delevoping cartridge 30 smoothly is installed in the Delevoping cartridge installation portion 147.

[00211] as shown in Fig. 5 and 9, with respect to the Width of Delevoping cartridge 30, rear side end wall 78 is arranged on the below of the after-opening portion 73 on back diapire 76 rear ends at its left and right sides place.Each rear side end wall 78 forms L-shaped basically, and bottom is cut off in it.Between the rear side end wall 78 after rib 80 is arranged on diapire 76 rear ends, be positioned at after-opening portion 73 belows.

[00212] rib 80 extends between rear side end wall 78 along the Width of Delevoping cartridge 30.Reinforced wall 80 fits in the cut-out of 78 of rear side end walls.Shown in Figure 4 and 5, rib 80 forms continuously from the rear end of back diapire 76.Rib 80 comprises strengthens upper wall 82, strengthens antetheca 85, strengthens diapire 83 and reinforced sidewall 84.These walls 82-85 integral body forms the shape that resembles box substantially of opening wide backwards.More concrete is, when seeing perpendicular to the side cross-sectional view of the Width of Delevoping cartridge 30, it is the U type of rear portion opened basically that rib 80 forms.

[00213] strengthening upper wall 82 extends back with whole formation the in rear end of back diapire 76.Strengthening antetheca 85 extends downwards from the front end of strengthening upper wall 82 with whole formation the in rear end of back diapire 76.Strengthening diapire 83 is arranged to face mutually with reinforcement upper wall 82 in vertical direction.Strengthening diapire 83 extends backward and downwards with whole formation the in the lower end of strengthening antetheca 85.

[00214] reinforced sidewall 84 and reinforcement upper wall 82, the end of strengthening antetheca 85 and reinforcement diapire 83 is with respect to the whole formation of the Width of Delevoping cartridge 30.As shown in Figure 4, following film 87 is attached to and strengthens on the upper wall 82.Following film 87 is formed by for example polyethylene terephthalate.The rearward end of following film 87 is attached to the upper surface of strengthening upper wall 82, and extends upward the lower surface with the rubber roll body 53 of contact developer roll 38 forward.Correspondingly, the gap between following film 87 sealing reinforcement upper walls 82 and the developer roll 38 is to prevent that toner is from clearance leakage.

[00215] as shown in Fig. 4 and 7, guided plate 81 is arranged on the diapire 71 of developing frame 36 continuously from rib 80.Muscle shape or tabulars that guided plate 81 forms on fore-and-aft direction and extends downwards from diapire 71.Adjacent guided plate 81 is arranged on Delevoping cartridge 30 Widths parallel to each other, and separated by a distance mutually.

Say more specifically that [00216] rear end of each guided plate 81 all is connected to be strengthened antetheca 85 and strengthen diapire 83.The rearward end of diapire 74 before the front end of each guided plate 81 all is connected to.All from back diapire 76, middle diapire 75 and preceding diapire 74 extend downwards each guided plate 81.Each guided plate 81 all with strengthen diapire 83, strengthen antetheca 85, back diapire 76, middle diapire 75 and the 74 whole formation of preceding diapire.All extend in the mode of basic straight line to the front side from the rear end of strengthening diapire 83 lower end of each guided plate 81, upwards to front curve, arrives the rearward end of preceding diapire 74 at last below middle diapire 75.

[00217] as shown in Fig. 7 and 12, the guiding stiffening plate 86 of strengthening each guided plate 81 is arranged on the middle diapire 75.The guiding stiffening plate 86 be tabular, in certain center of guided plate 81 with respect to its fore-and-aft direction, along the direction that is basically perpendicular to fore-and-aft direction therefrom diapire 75 extend downwards.Guiding stiffening plate 86 connects guided plate 81 on the Width of Delevoping cartridge 30, to strengthen each guided plate 81.

[00218] preceding diapire 74 is equipped with installation portion 133 and installing plate 88, is used for Delevoping cartridge 30 is installed in the Delevoping cartridge installation portion 147 of drum frame 58.Diapire 74 with respect to position, the middle part of fore-and-aft direction before each installation portion 133 is arranged on respect to its each end of the Width of Delevoping cartridge 30.Each installation portion 133 all forms in the bottom of preceding diapire 74 and be the shape of basic rectangular slab in upward view.

[00219] a pair of on the front end of the installing plate 88 that faces with each other on the Width of Delevoping cartridge 30 with respect to Width diapire 74 before the each end is formed on of Delevoping cartridge 30.Each installing plate 88 forms and is substantially triangular in shape, and diapire 74 extends downwards in the past.The lower end of each installing plate 88 each installation portion 133 slightly above extend along fore-and-aft direction.

[00220] shown in Fig. 7 and 10, the antetheca 72 of developing frame 36 is equipped with handle 89.Handle 89 is formed on the shape of the basic U-shaped on the planimetric map.Handle comprises two handle support panels 90 that are arranged on the antetheca 72 and keep at a certain distance away at the Width of Delevoping cartridge 30 between the two and is arranged on handle 91 between the handle support panels 90.Each handle support panels 90 all has extend forward from the top of antetheca 72 tabular.Handle 91 is connected to the front end of handle support panels 90.

[00221] projection 132 is arranged on each left and right sides sidewall 69L of developing frame 36 as compression zone, on the 69R.When Delevoping cartridge 30 is installed in the Delevoping cartridge installation portion 147 of drum frame 58, the relevant pressure lever 150 of projection 132 contacts.Each projection 132 is arranged on each left and right sides sidewall 69L, the preceding bottom of 69R, and from sidewall 69L, the outside surface of 69R is outwards outstanding.As shown in Figure 14 and 15, see that from the side each projection 132 forms and is opening U-shaped backward basically.Each projection 132 is arranged on left and right sides sidewall 69L, the last position with respect to the first direction symmetry of 69R.

[00222] when Delevoping cartridge 30 was installed in the Delevoping cartridge installation portion 147 of bulging box framework 58, installation portion 133 was placed on the relevant mounting base 155, and as shown in Figure 2, and installing plate 88 is placed on the diapire 143 of Delevoping cartridge installation portion 147.

[00223] as Fig. 8, shown in 16 and 17, the pressure lever 150 that the preceding end in contact of each projection 132 is relevant.The expulsive force of the compression spring by promoting pressure lever 150, each projection 132 is pressed backward by relevant pressure lever 150.Therefore, developing frame 36 moves backward with respect to Delevoping cartridge installation portion 147, thereby the rubber roll body 53 of developer roll 38 is pressed against to photoelectric conducting drum 28.

[00224] shown in Fig. 6 and 8, junction surface 181 integrally is arranged on the back of projection 132 to stretch out with right side wall 69R.When Delevoping cartridge 30 was installed in the Delevoping cartridge installation portion 147 of bulging box 27, junction surface 181 was positioned at below the locking lever 151.Locking lever 151 engages with junction surface 181 by the expulsive force of flexible part 152.When Delevoping cartridge 30 by when Delevoping cartridge installation portion 147 shifts out, locking lever 151 is pushed downwards so that junction surface 181 is disengaged from locking lever 151.

[00225] (2) gear mechanism portion and gear cap

As shown in Figure 14, rotating shaft of stirrer 46, the end of supplying with roll shaft 50 and development roll shaft 52 is outwards outstanding from the left side wall 69L as second sidewall on first direction.As shown in Fig. 5 and 13, be arranged on being useful on the left side wall 69L and drive rotating shaft of stirrer 46, supply with the gear cap 93 of the gear mechanism portion 92 and the covering gear mechanism portion 92 of roll shaft 50 and 52 rotations of development roll shaft.

[00226] as shown in figure 14, gear mechanism portion 92 is arranged on the left side wall 69L.Gear mechanism portion 92 comprises that conduct is driven the input gear 94 of coupling connection portion, as the donor rollers driven wheel 95 of donor rollers gear, and as the developer roll driven wheel 115 of developer roll gear, neutral gear 96, stirrer-driven gear 97 and detection of gear 98.

[00227] input gear 94 is by rotatably being supported between development roll shaft 52 and the rotating shaft of stirrer 46 from the outward extending input gear of left side wall 69L back shaft 99 on the first direction.

[00228] the whole coupling connection portions 100 that are driven that are equipped with as first columnar portion of input gear 94, as the driven wheel 101 of second columnar portion, driven wheel 101 is driven around the coupling connection portion 100 with being driven the 100 homocentric settings of coupling connection portion and being centered around.Being driven coupling connection portion 100 is the cylindrical of hollow.The engagement retainer 102 that is driven portion with the conduct that is meshed as 200 (as the Fig. 5) of driving coupling connection portion that drive coupling connection portion extends radially inwardly from the interior perimeter surface that is driven coupling connection portion 100.Engagement retainer 102 is arranged to respect to input gear back shaft 99 toward each other.Like this, being driven coupling connection portion 100 forms and drives the gear teeth (as Fig. 5) that coupling connection portion 200 is meshed.

[00229] driven wheel 101 is placing and is being driven between coupling connection portion 100 and the left side wall 69L adjacent to being driven coupling connection portion 100 on the first direction.

[00230] donor rollers driven wheel 95 is installed in an end of supply roll shaft 50 to be meshed with it below input gear 94.Donor rollers gear 95 is arranged to supplying with roll shaft 50 rotation so that donor rollers driven wheel 95 not with supply with roll shaft 50 relative rotations.

[00231] developer roll driven wheel 115 is installed in development roll shaft 52 1 ends to be meshed with input gear 94 rear side under it.Developer roll driven wheel 115 is arranged to roll shaft 52 rotation of developing, like this developer roll driven wheel 115 not with the 52 relative rotations of development roll shaft.

[00232] in input gear 94 fronts, neutral gear 96 is supported on along first direction from the first side wall 69L on the outward extending neutral gear back shaft 103 with being rotated.Neutral gear 96 whole outer rotor 104 that is meshed with input gear 94 and the annular wheels 105 that are meshed with stirrer-driven gear 97 of being equipped with.Annular wheel 105 is arranged on the inboard with respect to outer rotor 104 on the Width of Delevoping cartridge 30.

[00233] stirrer-driven gear 97 end that is installed in rotating shaft of stirrer 46 is with rotating shaft of stirrer 46 rotations, like this stirrer-driven gear 97 not with rotating shaft of stirrer 46 relative rotations.Stirrer-driven gear 97 is positioned at 96 times front sides of neutral gear.The 97 whole outfits of stirrer-driven gear and the annular wheel 106 of annular wheel 105 engagements of neutral gear 96 and the outer rotor 107 that meshes with detection of gear 98.Outer rotor 107 is arranged on the outside of the annular wheel 106 on the Width of Delevoping cartridge 30.

[00234] detection of gear 98 by from left side wall 69L the outward extending detection of gear back shaft 108 of first direction be supported on rotatably stirrer-driven gear 97 on the front side.Detection of gear 98 is part hypodontia gears.Detection of gear 98 forms with determine teat 109 integral body in the use that extends radially outwardly of detection of gear back shaft 108.The volute spring 110 that detection of gear 98 is wrapped in around the detection back shaft 108 promotes to mesh with the outer rotor 107 with stirrer-driven gear 97.

[00235] as shown in Figure 13, gear cap 93 is attached on the left side wall 69L of Delevoping cartridge 30, hides gear mechanism portion 92 from the outside with respect to the Width of Delevoping cartridge 30.Gear cap 93 has development roll shaft 52 and ring element 116 insertions developer roll shaft insertion hole 111 wherein, also has therefrom to expose the input hole 112 that is driven coupling connection portion 100.In addition, gear cap 93 is provided in the detection of gear shielding part 113 of the front side covering detection of gear 98 of input hole 112.

[00236] detection of gear shielding part 113 stretches out at first direction.Detection of gear 98 fits in the extension of detection of gear shielding part 113.Fan-shaped detection window 114 is formed on the rear side of detection of gear shielding part 113.Determine that along the use that the circumferencial direction of detection of gear 98 moves projection 109 exposes from detection window 114 according to the rotation of detection of gear 98.

[00237] as shown in Figure 5, when the handle box 20 that has the Delevoping cartridge 30 that is arranged on wherein is installed in the main casing 2, being driven in the coupling connection portion 100 of the input gear 94 of driving coupling connection portion 200 insertion Delevoping cartridges 30 is passed to this driving coupling connection portion 200 from the driving force that is arranged at the motor (not shown) in the main casing 2.Like this, being driven coupling connection portion 100 is meshed with driving coupling connection portion 200.

[00238] driving the action of opening/close that coupling connection portion 200 is relevant to the protecgulum 7 of main casing 2 inserts removedly and is driven in the coupling connection portion 100.More specifically, when protecgulum 7 is opened, drive coupling connection portion 200 and extract out from being driven coupling connection portion 100, handle box 20 can remove from main casing 2 like this.When the handle box 20 that has the Delevoping cartridge 30 that is arranged on wherein is installed in the main casing 2 by opening 6, when protecgulum 7 is closed then, drives coupling connection portion 200 and push ahead and insert and be driven in the coupling connection portion 100.

[00239] when inputing to when being driven coupling connection portion 100 94 rotations of input gear from driving coupling connection portion 200 from the driving force of motor.Then, direct donor rollers driven wheel 95 with driven wheel 101 engagements of importing gear 94 rotates.Thereby, supply with roll shaft 50 and cause donor rollers 37 rotations.And directly the developer roll driven wheel 115 with driven wheel 101 engagements of importing gear 94 rotates.Thereby development roll shaft 52 causes donor rollers 37 rotations.

[00240] in addition, the outer rotor 104 with the neutral gear 96 of driven wheel 101 engagement of input gear 94 is rotated.Be rotated with the annular wheel 105 of outer rotor 104 integrally formed neutral gears 96.When the annular wheel 105 of center tooth wheel 96 rotates, be rotated with the annular wheel 106 of the stirrer-driven gear 97 of annular wheel 105 engagements of neutral gear 96.Thereby rotating shaft of stirrer 46 causes that stirrer 45 rotates.

[00241] when the annular wheel 106 of stirrer-driven gear 97 is rotated, is rotated with the outer rotor 107 of annular wheel 106 integrally formed stirrer-driven gears 97.Then, rotate with the detection of gear 98 of outer rotor 107 engagement of stirrer-driven gear 97.

[00242] when not using Delevoping cartridge 30, detection of gear 98 is placed on as shown in Figure 14 the position, on this position, detection of gear 98 promoted by volute spring 110 and with outer rotor 107 engagements of stirrer-driven gear 97.In case detection of gear 98 is rotated, partly in the face of the outer rotor 107 of stirrer-driven gear 97, detection of gear 98 does not have and outer rotor 107 engagements the hypodontia of detection of gear 98 like this.Therefore, detection of gear 98 will can not rotated again.In one direction, the use of obsolete Delevoping cartridge 30 determines that 109 of teats cross detection window 114 once.In laser printer 1, determine whether teat 109 moves and make relevant the use and still do not use determining of the Delevoping cartridge 30 that is mounted by using the use detecting sensor (not shown) that is provided with in the main casing 2 to detect to use.

[00243] (3) electrode member

As Fig. 6, shown in 8 and 15, the bearing components 201 that supports development roll shaft 52 1 ends is arranged on the right side wall 69R as the first side wall.A kind of non-conductive resin material of bearing components 201 usefulness is made writing board shape.The ring portion 202 that internal diameter is identical with the diameter of development roll shaft 52 basically is integrally formed on the bearing components 201 in its back-end.Ring portion 202 is cylindrical, and inserts development roll shaft 52 therein.The end of development roll shaft 52 slidably and rotationally is supported on the interior perimeter surface of ring portion 202.

[00244] (0138) two coupling opening 128 is formed on the rear side of bearing components 201, so that in vertical direction ring portion 202 is inserted between the coupling opening 128.Admit the opening (not shown) of supplying with roll shaft 50 to be formed at the front side of bearing components 201.Two joint teats 129 are formed at right side wall 69R and go up and coupling opening 128 corresponding positions.Bearing components 201 is attached to right side wall 69R, and the rear end of bearing components 201 flushes with the rear end of right side wall 69R like this.Because bearing components 201 is attached to right side wall 69R, development roll shaft 52 and supply roll shaft 50 insert respectively in ring portion 202 and the opening (not shown), engage teat 129 and are fitted in the relevant coupling opening 128.

[00245] is formed at the surface of bearing components 201 as being used to apply the develop electrode member 117 that is biased in the electrode on the development roll shaft 52.A kind of electroconductive resin of carbon dust that comprises of electrode member 117 usefulness is made.The electrode member 117 whole attachment plate 120 that are equipped with are as the development roll shaft shielding part 118 and the terminal part 119 of developer roll shaft supporting part.

[00246] attachment plate 120 usefulness thin plates form and see shape triangular in shape basically from the side.Development roll shaft shielding part 118 is arranged on attachment plate 120 rear ends.Development roll shaft shielding part 118 forms cylindrical, with an end of admittance development roll shaft 52, and is arranged to ring portion 202 concentric.Extend development roll shaft shielding part 118 rear end from attachment plate 120 on first direction.

[00247] development roll shaft 52 has the major diameter part that is supported by ring portion 202 and is developed the small diameter portion that roll shaft shielding part 118 supports.The diameter of major diameter part is greater than the diameter of small diameter portion.The external diameter of development roll shaft shielding part 118 internal diameter with ring portion 202 basically is identical.When development roll shaft shielding part 118 was inserted on the development roll shaft 52, the part of development roll shaft shielding part 118 fitted in the ring portion 202.

[00248] terminal part 119 is arranged on the front end of attachment plate 120, between terminal part on the fore-and-aft direction 119 and development roll shaft shielding part 118 at a distance of certain distance.Terminal part 119 is equipped with pedestal 121, as the contact plate 122 of contact portion.

[00249] pedestal 121 whole be equipped with extend on the vertical direction with form see the substrate 123 of ovalize from the side and on Delevoping cartridge 30 Widths from the outward extending outer circular edge plate 124 of substrate 123 peripheries.A part that is formed at the curtain plate 124 of substrate 123 upper ends stretches out at first direction, and this part is longer than the part of curtain plate 124 remainders.

[00250] contact plate 122 is seen from the side and is downward opening U-shaped basically.The curtain plate 124 that contact plate 122 forms from pedestal 121 upper ends on first direction stretches out.

[00251] forms stiffening rib 125 on the attachment plate 120, following stiffening rib 126 and as the supply roll shaft shielding part 127 of donor rollers support section.Last stiffening rib 125 stretches out from attachment plate 120 on first direction.Last stiffening rib 125 is formed it is extended downwards backward from contact plate 122 rear ends towards development roll shaft shielding part 118, and is connected to development roll shaft shielding part 118.

[00252] stiffening rib 126 stretches out from attachment plate 120 on first direction down, sees opening U-shaped up basically from the side to form, and covers the bottom of terminal part 119 simultaneously.More specifically, following stiffening rib 126 comprises first time stiffening rib 126A of continuous formation, second time stiffening rib 126B and the 3rd time stiffening rib 126C.

[00253] first time stiffening rib 126A extends from its upper end backward and downwards.The upper end of first time stiffening rib 126A is connected to the last stiffening rib 125 that is provided with between development roll shaft shielding part 118 and the terminal part 119.The lower end of first time stiffening rib 126A is connected to stiffening rib 126C the 3rd time.

The upper end of [00254] second time stiffening rib 126B is connected to the preceding lower end of pedestal 121.The upper end of second time stiffening rib 126B is parallel to first time stiffening rib 126A and extends downwards backward.The lower end of second time stiffening rib 126B is connected to stiffening rib 126C the 3rd time.

[00255] the 3rd time stiffening rib 126C is arranged on pedestal 121 belows, so that connect the lower end of the first time stiffening rib 126A and the second stiffening rib 126B.

[00256] (0145) is supplied with roll shaft shielding part 127 and is arranged between pedestal 121 and the 3rd time stiffening rib 126C.Supplying with roll shaft shielding part 127 forms cylindrical to admit an end of supplying with roll shaft 50.Supplying with roll shaft shielding part 127 stretches out from the contact plate 120 that is shorter than curtain plate 124 at first direction.

[00257] screw element hole (not shown) is formed on the substrate 123 of pedestal 121.Screw element hole (not shown) also be formed on the bearing components 201 with substrate 123 on corresponding position, screw element hole on.Threaded hole (not shown) be formed at that right side wall 69R goes up and substrate 123 on corresponding position, screw element hole on.

[00258] when the end that makes development roll shaft 52 and supply roll shaft 50 is respectively inserted into development roll shaft shielding part 118 and supplies with roll shaft shielding part 127, use the screw element hole of inserting on the substrate 123, pass the screw element hole on the bearing components 201, be screwed into the screw element 130 of the threaded hole of right side wall 69R then, electrode member 117 is attached to right side wall 69R.

[00259] owing to this structure, the end of development roll shaft 52 contacts the interior perimeter surface of development roll shaft shielding part 118 slidably.Similarly, the end of supply roll shaft 50 contacts the interior perimeter surface of supplying with roll shaft shielding part 127 slidably.

[00260] when the processing print cartridge 20 that has the Delevoping cartridge 30 that is arranged on wherein is installed in the main casing 2, is arranged on and flexibly contacts the upper surface of contact plate 122 as the development bias voltage terminal 131 of feed-in member in the main casing 2, shown in the dotted line among Figure 15.

[00261] more specifically, contact plate 122 is arranged near the supply roll shaft 50 that inserts supply roll shaft shielding part 127 with respect to vertical direction.Development bias voltage terminal 131 its with in the face of the surperficial facing surfaces of supplying with roll shaft 50 on flexibly contact contact plate 122.

[00262] development bias voltage terminal 131 is connected to and is arranged in the main casing 2 to apply the high-tension line plate of development bias voltage.When development bias voltage terminal 131 flexibly contacts the upper surface of contact plate 122, be applied to the development roll shaft by the electrode member that forms by electroconductive resin from the development bias voltage of high-tension line plate.Then, the development bias voltage is applied to the rubber roll body 53 of conduction from development roll shaft 52.

[00263] electrode member 117 supports development roll shaft 52 and supplies with roll shaft 50, like this, applies the bias voltage identical with the bias voltage that develops by supplying with roll shaft 50 to the sponge roll body 51 of conduction.

[00264] relative position of (4) input gear and electrode member

As Figure 11, shown in 13 and 15, in Delevoping cartridge 30, when input gear 94 is first direction when outstanding in the direction that is parallel to development roll shaft 52, the contact plate 122 of electrode member 117 is arranged in the outstanding plane.

[00265] more specifically, as shown in Figure 19 and 20, when the coupling connection portion 100 that is driven of input gear 94 when first party projects upwards, the contact plate 122 of electrode member 117 is arranged in the outstanding plane.In addition, when being driven coupling connection portion 100 when first party projects upwards, contact plate 122 is arranged in contact development bias voltage terminal 131 in the outstanding plane.Especially, contact plate 122 is arranged in the extended line (second axis X 2 as described below) that is driven the input gear back shaft 99 that coupling connection portion 100 rotates thereon and goes up contact development bias voltage terminal 131.

[00266] as shown in figure 11, second axis X 2 parallel and setting equidistantly on fore-and-aft direction of importing gear 94 axis as the first axle X1 and the conduct of development roll shaft 52 axis.The a pair of contact plate 122 of electrode member 117 is arranged on second axis X 2.More specifically, as shown in figure 13, the first line L1 connects the axis of the input gear back shaft 99 that the input gear rotates and the axis of the development roll shaft 52 that developer roll 38 rotates thereon thereon on the direction axial perpendicular to development roll shaft 52.As shown in figure 15, the second line L2 connect on perpendicular to the direction of development roll shaft 52 axis contact plate 122 with as the contact point of the development bias voltage terminal 131 of the part of the contact plate 122 of electrode member 117 and the axis of the development roll shaft 52 that developer roll 38 rotates thereon.As shown in figure 11, the first line L1 and the second line L2 are parallel to each other.In first axle X1 on the first line L1 as shown in figure 13 and the distance D 1 between second axis X 2, equate with distance D 2 between second axis X 2 with first axle X1 on as shown in figure 15 the second line L2.

[00267] effect of (5) Delevoping cartridge

In the Delevoping cartridge 30 with said structure, when input gear 94 is a first party when projecting upwards in the direction that is parallel to development roll shaft 52, the contact plate 122 of electrode member 117 is arranged in the outstanding plane.More specifically, when being driven coupling connection portion 100 when first party projects upwards, the contact plate 122 of electrode member 117 is arranged in the outstanding plane.In some respects, when being driven coupling connection portion 100 when first party projects upwards, contact plate 122 is contact development bias voltage terminal 131 in outstanding plane.Especially, contact plate 122 contact development bias voltage terminal 131 on the extended line that is driven the input gear back shaft 99 that coupling connection portion 100 rotates thereon.In addition, the first axle X1 and second axis X 2 are parallel to each other.The part of the contact plate 122 of electrode member 117 is arranged on second axis X 2.More specifically, the first line L1 and the second line L2 are parallel to each other, and first distance D 1 and second distance D2 equate.

[00268] therefore, when being input to when being driven coupling connection portion 100 from driving coupling connection portion 200 from the driving force of motor, even when producing this revolving force that Delevoping cartridge 30 rotates or reverse around input gear 94 or torsion and be applied on the Delevoping cartridge 30, also can prevent the significant impact of revolving force and torsion to the contact plate 122 of electrode member 117.As a result, just can prevent that contact plate 122 is in out of position.Like this, contact plate 122 contacts so that electric power stably is provided to development roll shaft 52 from electrode member 117 with development bias voltage terminal 131 is stable each other.

[00269] if when being driven coupling connection portion 100 when first party projects upwards, the contact point between contact plate 122 and the development bias voltage terminal 131 is placed in any position in the outstanding plane, the influence of rotating force or torsion can be reduced to minimum.

[00270] in addition, in Delevoping cartridge 30, be supported on left and right sides sidewall 69L, among the 69R, make each end of developer roll 38 be supported on left and right sides sidewall 69L, among the 69R by each end rotation with development roll shaft 52.Correspondingly, when developer roll 38 was firmly supported, the development bias voltage can stably be applied on the rubber roll body 53.

[00271] end of development roll shaft 52 is supported in the development roll shaft insertion section 111 of gear cap 93 rotationally by ring element 116.The other end of development roll shaft 52 is supported in the development roll shaft shielding part 118 of electrode member 117 rotationally.Each end of developer roll 38 is also supported by the development roll shaft insertion section 111 of gear cap 93 or the development roll shaft shielding part 118 of electrode member 117.Like this, when development roll shaft 52 inserted in the development roll shaft shielding part 118 of the development roll shaft insertion section 111 of gear cap 93 and electrode member 117 effectively, developer roll 38 can firmly be supported.Therefore, the development bias voltage can stably be applied on the rubber roll body 53.

[00272] in Delevoping cartridge 30, electrode member 117 is made of electroconductive resin.Therefore, electrode member can form Any shape stably to apply the development bias voltage to rubber roll body 53.

[00273] when the handle box 20 that has the Delevoping cartridge 30 that is arranged on wherein was installed in the main casing 2, development bias voltage terminal 131 flexibly contacted the upper surface of contact plate 122.By electrode member 117, the high-tension circuit plate is applied to the development bias voltage on the development roll shaft 52 from development bias voltage terminal 131.Then, the development bias voltage is applied on the rubber roll body 53 of conduction from development roll shaft 52.Like this, the development bias voltage can stably be applied on the rubber roll body 53 from electrode member 177.

[00274] development roll shaft 52 is made of metal, so that the development bias voltage can be applied on the rubber roll body 53 from electrode member 117 more reliably.In addition, in Delevoping cartridge 30, the development roll shaft shielding part 118 of electrode member 117 rotatably supports development roll shaft 52.Therefore, needn't be with other members or member supporting development roll shaft 52.Like this, can reach and reduce number of spare parts and save cost.

[00275] in Delevoping cartridge 30, input gear 94 whole outfits are driven coupling connection portion 100 and driven wheel 101.Therefore, when being driven coupling connection portion 100 and can receiving the driving force of coming self-driven coupling connection portion 200 reliably, driven wheel 101 is sent to donor rollers driven wheel 95 with driving force, developer roll driven wheel 115 and neutral gear 96.Like this, supplying with roll shaft 50 and development roll shaft 52 and rotating shaft of stirrer 46 can rotate reliably.

[00276] is driven coupling connection portion 100 and is the cylindrical of hollow.Be driven coupling connection portion 100 and form the gear teeth with engagement retainer 102, engagement retainer 102 extends radially inwardly from the interior perimeter surface that is driven coupling connection portion 100.Therefore, when engagement retainer 102 is meshed with driving coupling connection portion 200, can receive driving forces from driving coupling connection portion 200 reliably.

[00277], directly is sent to developer roll driven wheel 115 from importing gear 94 from driving the driving force that coupling connection portion 200 is input to input gear 94 when the driven wheel 101 of input gear 94 during directly with 115 engagements of developer roll driven wheel.Therefore, developer roll 38 can rotate reliably.In addition, when driving force is transmitted like this, directly be not transferred to developer roll driven wheel 115 from the driving force of main casing 2, the roll shaft 52 that therefore develops can be used as guiding piece.More specifically, when Delevoping cartridge 30 was installed in the Delevoping cartridge installation portion 147, ring element 116 that is provided with on the development roll shaft 52 and development roll shaft shielding part 118 were guided along guiding groove 153.Like this, development roll shaft 52 can be used as guiding piece.Therefore, just there is no need to be provided with in addition guiding piece, employed number of components and cost can be reduced.

[00278] driven wheel 101 of input gear 94 also directly is meshed with donor rollers driven wheel 95, so that the driving force that is input to input gear 94 from driving coupling connection portion 200 directly is sent to donor rollers driven wheel 95.Therefore, donor rollers can be rotated reliably.In addition, because driving force is transmitted like this, driving force directly is sent to developer roll driven wheel 115 and donor rollers driven wheel 95 from input gear 94.Like this, driving force just can be transmitted effectively, and developer roll 38 and donor rollers 37 just can be rotated effectively.

[00279] electrode member 117 is equipped with development roll shaft shielding part 118 and supplies with roll shaft shielding part 127.Therefore, development roll shaft 52 and supply roll shaft 50 can be distinguished reliably by development roll shaft shielding part 118 and 127 supports of supply roll shaft shielding part.

[00280] when Delevoping cartridge 30 is installed in the main casing 2, the upper surface of development bias voltage terminal 131 Elastic Contact contact plates 122, contact plate 122 be positioned at development roll shaft shielding part 118 and supply with roll shaft shielding part 127 the top and with in the face of supplying with the surperficial relative of roll shaft 50.Therefore, can reach reliable contact the between development bias voltage terminal 131 and the contact plate 122.Like this, can reliably the development bias voltage be applied to contact plate 122 by development bias voltage terminal 131 by high-tension line plate (not shown).

[00281] when Delevoping cartridge 30 is installed in the Delevoping cartridge installation portion 147 of drum frame 58, the pressure lever 150 that the preceding end in contact of projection 132 is relevant.The expulsive force of the compression spring by promoting pressure lever 150, each projection 132 is pressed backward by relevant pressure lever 150.Like this, developer roll 38 is pressed against to photoelectric conducting drum 28.Because can developing reliably, contact reliably between developer roll 38 and the photoelectric conducting drum 28, the toner that carries on the developer roll 38 be formed on electrostatic latent image on the photoelectric conducting drum 28.

[00282] each projection 132 is all at left and right sides sidewall 69L, and from each left and right sides sidewall 69L, the outside surface of 69R stretches out the preceding downside of 69R on first direction.Because this structure, projection 132 can contact relevant pressure lever 150 reliably, thereby can guarantee reliable contact the between developer roll 38 and the photoelectric conducting drum 28.

[00283] Delevoping cartridge 30 removably is installed in the bulging box 27.No matter the life-span of photoelectric conducting drum 28 how, can be changed Delevoping cartridge 30 with new Delevoping cartridge according to residue toner amount.No matter the residue toner amount that contains in the Delevoping cartridge 30 how much, can change drum box 27 according to the life-span of photoelectric conducting drum 28.

[00284] 3. other aspects

(1) according to otherwise electrode member

In more than describing, comprise attachment plate 120, the electrode member 117 as electrode of development roll shaft shielding part 118 and terminal part 119 forms by electroconductive resin is whole, as Fig. 6, shown in 8,15.Yet, attachment plate 120, development roll shaft shielding part 118 and terminal part 119 also can separately form, and then are assembled into electrode member 117 together.

[00285] for example, the terminal part 199 that is equipped with pedestal 121 and contact plate 122 can be used as electrode and makes with metal integral.Attachment plate 120 and development roll shaft shielding part 118 can be used as conductive member and make with electroconductive resin integral body.Then, terminal part 119 can be fastened on the attachment plate 120 by screw element 130.Electrode member 117 just can form like this.

[00286] owing to kind electrode member 117, because terminal part is made of metal, the development bias voltage can be applied to contact plate 122 from whole 131 ends of development bias voltage reliably.Electric power can be provided to development roll shaft 52 from the terminal part 119 as electrode member 117 parts reliably by attachment plate 120 and development roll shaft shielding part 118.

[00287] terminal part 119 contacts development roll shaft 52 by attachment plate 120 indirectly with development roll shaft shielding part 118.Therefore, terminal part 119 can freely be selected with respect to the position of terminal part 119 with respect to the position or the development roll shaft 52 of development roll shaft 52.Like this, when improving design efficiency, electric power can provide to development roll shaft 52 from contact plate 122 reliably.

[00288] (2) are according to otherwise development roll shaft

In more than describing, development roll shaft 52 is made of metal.Yet development roll shaft 52 also can be made of electroconductive resin.In addition, development roll shaft 52 also can be made of the insulating material such as dielectric resin material.

[00289] when development roll shaft 52 usefulness insulating material were made, electrode member 117 and rubber roll body 53 can be electrically connected, and the bias voltage that therefore develops can directly be applied on the rubber roll body 53 from electrode member 117.Like this, the resistance of rubber roll body 53 can be provided with to such an extent that be lower than resistance according to the rubber roll body 53 of above-mentioned various aspects.

[00290] for example as shown in figure 18, the surface of the development roll shaft 52A of insulation can use the conducting strip 154 that is made of the metal forming such as aluminium foil to cover to contact with rubber roll body 53.Conducting strip 154 can contact the interior perimeter surface of development roll shaft shielding part 118.Because this structure can be applied to rubber roll body 53 by conducting strip 154 from electrode member 117 with the development bias voltage.

[00291] (3) are according to otherwise input gear

In more than describing, whole formation is driven coupling connection portion 100 and driven wheel 101 on the input gear 94.Yet, can integral body form for example driven wheel 101 and engagement retainer 102 on the input gear 94.

[00292] Figure 21 is the skeleton view corresponding to Fig. 6 of Delevoping cartridge, and electrode member is removed from Delevoping cartridge among the figure; Figure 22 is the skeleton view corresponding to Fig. 8 of Delevoping cartridge, and electrode member is removed from Delevoping cartridge among the figure; Figure 23 is the right side view corresponding to Figure 15 of Delevoping cartridge.Figure 24 is the sectional view along A-A line among Figure 23 of Delevoping cartridge, and Figure 25 is the sectional view along B-B line among Figure 23 of Delevoping cartridge.

[00293] hereinafter will be with reference to Figure 21 and 25 detailed descriptions according to some otherwise Delevoping cartridges.It should be noted that similar reference number represents similar parts, therefore omit detailed description it.

[00294] (1) developing frame

The developing frame 36 that has the Delevoping cartridge 30 that except following structure, is similar to aspect described above according to the Delevoping cartridge 30 of some aspects.

[00295] as shown in Figure 21 and 22, the developing frame 36 of some aspects has the straight thread spare portion 79 as the screw element part, is used for electrode member 117 is attached to right side wall 69R one side (right side) in closed development chamber 42.It is outward extending cylindrical from right side wall 69R that straight thread spare portion 79 is.Thread groove is formed on the interior perimeter surface of straight thread spare portion 79, is used for the axle 130a of screw element 130 is screwed into straight thread spare portion 79.The two ends up and down of the free end 79a of straight thread spare portion 79 are cut along fore-and-aft direction.Like this, free end 79a is ovalize basically, and the lower end has the upwardly extending smooth part in front and back thereon.

[00296] (2) gear mechanism portion and gear cap

Delevoping cartridge 30 according to some aspects has gear mechanism portion 92 and the gear cap 93 that is similar to according to the Delevoping cartridge 30 of aspect described above.

[00297] (3) electrode member

Delevoping cartridge 30 according to some aspects has the electrode member 117 that is similar to according to the Delevoping cartridge 30 of previous described aspect except following structure.

[00298] forms opening 161 in the front side of bearing components 201.When bearing components 201 was attached on the right side wall 69R, development roll shaft 52 was inserted into ring portion 202, supplied with roll shaft 50 and was inserted into opening 161.In order to prevent to disturb with bearing components 201 from the outward extending straight thread spare of right side wall 69R portion 79 at first direction, the part of the periphery of the bearing components 201 that straight thread spare portion 79 extends at this place is cut.When bearing components 201 was attached on the right side wall 69R, straight thread spare portion 79 was from the peripheral exposure of bearing components 201.

[00299] as the electrode that applies the development bias voltage to development roll shaft 52, electrode member 117 is arranged on the right side wall 69R discretely with bearing components 201, and like this, the part of bearing components 201 is inserted between right side wall 69R and the electrode member 117.As shown in Figure 24, electrode member 117 is arranged on the position of attachment plate 120 outsides abreast as the substrate 123 of attachment with respect to first direction and attachment plate 120.As shown in Figure 21 and 22, be formed on the basic centre of substrate 123 as the screw element hole 140 of insertion portion.Relevant with the free end 79a of straight thread spare portion 79, screw element hole 140 is ovalize basically, has the upwardly extending smooth part in front and back.

[00300] curtain plate 124 extends from substrate 123 peripheries on first direction, so that connect substrate 123 and attachment plate 120.In the Delevoping cartridge aspect some 30, electrode member 117 is attached on the right side wall 69R in following mode.At first, the end of development roll shaft 52 and supply roll shaft 50 is inserted into development roll shaft shielding part 118 and supplies with roll shaft shielding part 127.Simultaneously, the straight thread spare portion 79 on the right side wall 69R of being arranged at inserts in the screw element hole 140 on the substrates 123, and the free end 79a of straight thread spare portion 79 is fitted in the screw element hole 140.Then, the screw element 130 as fixed component is screwed into from the straight thread spare portion 79 that substrate 123 exposes.

[00301] wholely on the screw element 130 forms axle 130a and be arranged on the end of a 130a, prevent the screw element head 130b of separating part as mushroom in the upwardly extending conduct in the footpath of axle 130a with the screw thread that forms along axis direction.The diameter of screw element head 130b is identical or bigger with the diameter of straight thread spare portion 79.

[00302] as shown in Figure 24 and 25, screw element 130 is screwed in the straight thread spare portion 79, up to the free end face Ff of conduct the 3rd end face of the inner face If contact straight thread spare portion 79 of screw element head 130b conduct second end face axial with respect to screw element 130.

[00303] when electrode member 117 is attached to right side wall 69R like this, be arranged on the attachment plate 120 contact bearing members 201 between development roll shaft shielding part 118 and the pedestal 121, like this, electrode member 117 is located with respect to first direction (Width of Delevoping cartridge 30).The free end face Ff of straight thread spare portion 79 is provided on the first direction side slightly outwards outstanding (for example 0.2mm) from the outside surface of conduct first end face of substrate 123 towards screw element head 130b.

[00304] with respect to screw element 130 axially, the inner face If of screw element head 130b is arranged to contact the free end face Ff of straight thread spare portion 79 and towards the outside surface Of of substrate 123, with the upper and lower of the screw element axle 130a very little distance (for example 0.2mm) of being separated by.In the position relative with the free end face Ff of straight thread spare portion 79, screw element head 130b restriction or prevent that substrate 123 from separating or remove from straight thread spare portion 79.

[00305] because the distance between the outside surface Of of the inner face If of screw element head 130b and substrate 123, electrode member 117 can not contact closely with substrate 123 outside surface Of.Therefore, be associated with gap small between electrode member 117 and the straight thread spare portion 79, electrode member 117 can slightly move.When the development bias voltage terminal 131 in being arranged at main casing 2 flexibly contacted the upper surface of contact plate 122, development roll shaft shielding part 118 was to move slightly in the scope of minim gap between electrode member 117 and straight thread spare portion 79.Therefore, the outer surface of development roll shaft 52 ends contacts slidably with closely with the interior perimeter surface of development roll shaft shielding part 118.Like this, the end of development roll shaft 52 is supported rotationally by development roll shaft shielding part 118.It is same mobile in the scope of this minim gap to supply with roll shaft shielding part 127.Therefore, the outer surface of supply roll shaft 50 ends contacts slidably with closely with the interior perimeter surface of donor rollers shielding part 127 equally.Like this, the end of supplying with roll shaft 50 is supported rotationally by supplying with roll shaft shielding part 127.

[00306] effect of (4) Delevoping cartridge

As mentioned above, in Delevoping cartridge 30, electrode member 117 can slightly move in the scope of minim gap.When the development bias voltage terminal 131 that is provided with in the main casing 2 flexibly contacted the upper surface of contact plate 122, development roll shaft shielding part 118 moved in the scope of this minim gap.Therefore, when the outer surface of development roll shaft 52 ends contacted with the interior perimeter surface of development roll shaft shielding part 118 reliably, development roll shaft 52 was rotated.In other words, development roll shaft shielding part 118 supports development roll shaft 52 rotationally, and electrode member 117 is moved, and like this, when development bias voltage terminal 131 contact contact plates 122, development roll shaft shielding part 118 contacts with developer roll 52 reliably.Therefore, by contact plate 122 and development roll shaft shielding part 118, the development bias voltage is applied on the development roll shaft 52 from development bias voltage terminal 131 reliably.

[00307] in Delevoping cartridge 30, electrode member 117 usefulness screw elements 130 easily are attached to right side wall 69R, and electrode member can slightly move small gap like this.

[00308] more specifically, as screw element head 130b during with respect to the free end face Ff of the axial inner face If contact straight thread spare portion 79 of screw element 130, screw element head 130b and substrate 123 are configured to be provided with certain distance between the two.Like this, can be accurately and distance between the inner face If of the outside surface Of of substrate 123 and screw element head 130b is set reliably.Therefore, when guaranteeing that development roll shaft 52 steadily rotates with respect to development roll shaft shielding part 118, development roll shaft shielding part 118 can contact with development roll shaft 52 reliably.

[00309] in Delevoping cartridge 30, development roll shaft shielding part 118 and contact plate 122 are provided on the first direction and stretch out along development roll shaft 52 from right side wall 69R.Therefore, when contact plate 122 contacted with development bias voltage terminal 131 reliably, the roll shaft 52 that can guarantee to develop rotated stably with respect to development roll shaft shielding part 118, and development roll shaft shielding part 118 can contact with development roll shaft 52 reliably.

[00310] in Delevoping cartridge 30, supplies with roll shaft shielding part 127 and be arranged in the electrode member 117.When supply roll shaft 50 was supported rotationally by supply roll shaft shielding part 127, the development bias voltage also can be applied to be supplied with on the roll shaft 50.

[00311] in Delevoping cartridge 30, bearing components 201 is arranged on the right side wall 69R discretely with electrode member 117.Because bearing components 201 can carry or support development roll shaft 52, in the time of assurance development roll shaft 52 smooth rotation therefore on record, development roll shaft shielding part 118 can contact with development roll shaft 52 reliably.Even when bearing can not use as electrode member 117, electric power still can be provided to development roll shaft 52 reliably.

[00312] (5) are according to otherwise electrode member

In more than describing, owing to have distance between the outside surface Of of the inner face If of screw element head 130b and substrate 123, development roll shaft shielding part 118 is moved, and its interior perimeter surface contacts the outer surface of development roll shaft 52 ends reliably like this.Yet development roll shaft shielding part 118 can move with different modes, and its interior perimeter surface can contact the outer surface of development roll shaft 52 ends reliably like this.

[00313] for example, be attached to right side wall 69R at electrode member 117 and go forward, electrode member 117 can form distance between the axis of the center in the screw element hole 140 that makes electrode member 117 and development roll shaft shielding part 118 and be different from distance between the axis of the axis of straight thread spare portion 79 and development roll shaft 52 slightly.When the electrode member 117 of such formation was attached on the right side wall 69R, the axis of the center in screw element hole 140 and straight thread spare portion 79 was complementary each other.Yet the axis of development roll shaft shielding part 118 is slightly different mutually with the axis of development roll shaft 52 and be not complementary.Therefore, the outer surface of development roll shaft 52 ends contacts the interior perimeter surface of development roll shaft shielding part 118 reliably.

[00314] though described the present invention in conjunction with each exemplary aspect of above general introduction, but variously substitute, modification, variation, improvement and/or substantial equivalent, no matter be known or current unforeseen, all be conspicuous for the common those of skill in the art in this area.Therefore, of the present invention illustrative various aspects mentioned above just are used for illustrating and are unrestricted.Can make various variations and not deviate from the spirit and scope of the present invention.Therefore the intent of the present invention is to comprise the substituting of all known or back exploitations, modification, variation, improvement and/or substantial equivalent.

[reference numeral explanation]

1: laser printer

2: main casing

27: the drum box

28: photoelectric conducting drum

30: Delevoping cartridge

36: developing frame

37: donor rollers

38: developer roll

50: supply with roll shaft

51: the sponge roll body

52: the development roll shaft

53: the rubber roll body

69: sidewall

79: cylindrical thread spare section

93: gear cap

94: input gear

95: the donor rollers driven wheel

102: the engagement retainer

100: the driven section that is coupled

101: driven wheel

115: the developer roll driven wheel

117: electrode member

118: development roll shaft shielding part

119: terminal part

120: attachment plate

122: contact plate

123: substrate

127: supply with the roll shaft shielding part

130: screw element

130b: screw element head

132: projection

140: the screw element hole

150: pressure lever

201: bearing components

X1: first axle

X2: second axis

L1: first line

L2: second line

D1: first distance

D2: second distance

If: the inner face with respect to the screw element axis direction of screw element head

Ff: the free end face of straight thread spare portion

Of: the outside surface of substrate.

Claims (7)

1. a Delevoping cartridge (30) is characterized in that, comprising:

The housing (36) that comprises the first side wall (69R) and second sidewall (69L) relative with described the first side wall (69R);

Be arranged on the developer roll (38) between described the first side wall (69R) and described second sidewall (69L), described developer roll (38) comprises the development roll shaft (52) that is configured to rotate and is configured to carry the developer roll member (53) of developer thereon in developing process, described developer roll member (53) is arranged to around described development roll shaft (52), and the roll shaft (52) that develops in developing process rotates around first axle (X1);

Be arranged on described the first side wall (69R) upward adjacent to the electrode (117) of described development roll shaft (52), described electrode (117) is electrically connected to described developer roll member (53); With

Be arranged on the coupling connection portion (94) that is driven on second sidewall (69L), be driven in the driving coupling connection portion that coupling connection portion (94) is connected to image forming apparatus (1) and be configured in developing process around second axis (X2) rotation,

Wherein, described electrode (117) has the contact site (122) of the feed-in member that is configured to described contact image forming device (1);

During projection, at least a portion of described contact site (122) is arranged in this projection section on being driven the direction that coupling connection portion (94) is being parallel to described development roll shaft (52).

2. Delevoping cartridge as claimed in claim 1 (30) is characterized in that, electrode (117) is around the circumferential section of described development roll shaft (52).

3. Delevoping cartridge as claimed in claim 1 (30), it is characterized in that, developer roll (38) comprises the developer roll gear (115) that connects into the roll shaft that develops (52) rotation, and is driven coupling connection portion (94) and comprises the driven wheel (101) that is meshed with developer roll gear (115).

4. Delevoping cartridge as claimed in claim 3 (30) is characterized in that, the described Delevoping cartridge of this ÷ (30) also comprises:

Be configured to provide to developer roll (38) donor rollers (37) of developer, donor rollers (37) is parallel to developer roll (38) setting,

Wherein, donor rollers (37) comprises the supply roll shaft (50) that is configured to rotate in developing process, be configured to provide the donor rollers member (51) of developer to developer roll (38), donor rollers member (51) is arranged to around supplying with roll shaft (50), with connect into the donor rollers gear (95) of supplying with roll shaft (50) rotation, donor rollers gear (95) is configured to be meshed with driven wheel (101).

5. Delevoping cartridge as claimed in claim 4 (30) is characterized in that, electrode (117) is electrically connected to supplies with roll shaft (50).

6. Delevoping cartridge as claimed in claim 5 (30) is characterized in that, electrode (117) has and is configured to around the first (118) of the circumferential section of development roll shaft (52) and is configured to around the second portion (127) of the circumferential section of supplying with roll shaft (50).

7. Delevoping cartridge as claimed in claim 6 (30) is characterized in that, described contact site (122) is arranged on described first (118) and described second portion (127) top.

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