JP5347240B2 - Power-supplied unit, image carrier unit, and image forming apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily manufacture a power feed member support body having a power feed member. <P>SOLUTION: This image holder unit UK is provided with an image holder Pk, a charger CRk for charging a surface of the image holder Pk, a resin power-fed member support body 41 for supporting the image holder Pk and the charger CRk, and the power feed member 61 made of a conductive resin, for forming power feed lines (61+62+46) to the charger CRk, and formed integrally in the charger CRk. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention relates to a power supplied unit, an image carrier unit, and an image forming apparatus.

Conventionally, in an image forming apparatus such as an electrophotographic copying machine or printer, the surface of an image carrier is charged by a charger, a latent image is formed on the charged surface, and the latent image is formed by a developer supplied from the developing device. Visualization is performed to form an image. The image carrier, the charger, the developing device, and the like are worn with time as they are used, and thus are often replaced units in order to facilitate replacement and repair. A predetermined charging voltage and developing voltage are applied to the charger and the developing device, and when these are constituted by replaceable units, current and voltage are supplied via a power supply member when the unit is mounted.
As a technique for supplying current and voltage to a power-supplied member that needs to be fed using a power feeding member, a technique described in Patent Document 1 below is known.

  Japanese Patent Application Laid-Open No. 2001-242767 discloses an image carrier unit (U3) and a development unit (U4) constituting a process cartridge (U2) that can be attached to and detached from an image forming apparatus. A charging roll power supply plate (PL1) for supplying power to the charging roll (CR) of U3) and a developing roll power supply plate (PL2) for supplying power to the developing roll (Ga) of the development unit (U4) are described. Has been. In the technique described in Patent Document 1, the power supply plates (PL1, PL2) made of conductive metal are configured by separate members that are separate from the power supply member support (toner recovery container (T) and developer container (V)). The mounted portion formed on the power supply plate (PL1, PL2) that has a plurality of bent portions and curved shapes and is difficult to automatically assemble is mounted on the mounting portion of the power supply member support, thereby supplying the power supply member. (Power supply plate) is assembled to the frame.

Further, in the field of image forming apparatuses, the techniques described in Patent Documents 2 and 3 below are known as techniques for forming a seal member that is different from the power supply member in function and use and is not energized.
In Patent Document 2 (Japanese Patent Laid-Open No. 7-121085), unlike the power supply member, the upper frame body (14) constituting the cleaning means (13) is provided with elastic seal portions (14b1 to 14b4), so-called. A technique for integrally molding by two-color molding is described.
In Patent Document 3 (Japanese Patent Application Laid-Open No. 2004-170803), unlike the power supply member, the frame portions (16, 17, 18) constituting the developing device main body (19) are coupled to the frame portions (16-18). A technique is described in which a sealing member (22) for sealing a portion is formed integrally with a frame portion (17).

JP 2001-242767 A (“0018” to “0026”, FIGS. 3 to 5) JP-A-7-121085 ("0051" to "0061") JP 2004-170803 A (abstract)

  An object of the present invention is to facilitate the production of a power supply member support having a power supply member.

In order to solve the technical problem, the power-supplied unit according to claim 1 is:
A power-supplied member support made of insulating resin that supports a power-supplied member to be fed;
A power supply member made of a conductive resin that forms a power supply path to the power- supplied member and is different from the power-supplied member support formed integrally with the power-supplied member support;
It is provided with.

A second aspect of the present invention is the powered unit according to the first aspect,
The power-supplied member composed of a charger disposed opposite to an image carrier whose surface is charged;
It is provided with.

The invention described in claim 3 is the power-supplied unit according to claim 2,
The charger composed of a cylindrical charging member;
A conductive biasing member that forms a part of a power feeding path that applies a force to press the charging member against the surface of the image carrier and feeds power to the charging member;
While supporting one end of the urging member, the power supply member having a fixing portion for fixing the urging member in a positioned state;
It is provided with.

A fourth aspect of the present invention is the powered unit according to any one of the first to third aspects,
Peeling portion for peeling said feed member of the supply member support is formed on a surface integrally formed, the pre-Symbol feeding conductive member from said power-fed member support,
It is provided with.

In order to solve the technical problem, the image carrier unit of the invention according to claim 5
An image carrier,
A charger for charging the surface of the image carrier;
A power-supplied member support made of insulating resin that supports the image carrier and the charger;
A power supply member made of a conductive resin that forms a power supply path to the charger and is different from the power-supplied member support formed integrally with the charger;
It is provided with.

In order to solve the technical problem, an image forming apparatus according to a sixth aspect of the present invention provides:
An image forming apparatus main body;
The power-supplied unit according to claim 1, wherein the power-supplied unit can be attached to and detached from the image forming apparatus main body.
It is provided with.

According to the first aspect of the present invention, by integrally forming the power supply member on the power supply member support, the work of processing and attaching a separate power supply member can be omitted, and the power supply having the power supply member The production of the member support can be facilitated. That is, production costs including material costs and processing costs can be reduced.
According to the second aspect of the present invention, it is possible to easily create a power supply member that supplies power to the charger.
According to invention of Claim 3, the fixing | fixed part which fixes an urging | biasing member can be formed integrally.

According to the invention described in claim 4, the power supply member can be easily separated from the power-supplied member support through the separation portion, and the power supply member and the power-supplied member support can be easily reused. it can.
According to the fifth aspect of the present invention, a power-supplied member support having a power supply member that supplies power to the charger of the image carrier unit can be easily manufactured.
According to the sixth aspect of the present invention, the power-supplied unit that is attached to and detached from the image forming apparatus main body can be easily created, and the cost can be reduced.

Next, specific examples of embodiments of the present invention (hereinafter referred to as examples) will be described with reference to the drawings, but the present invention is not limited to the following examples.
In order to facilitate understanding of the following description, in the drawings, the front-rear direction is the X-axis direction, the left-right direction is the Y-axis direction, the up-down direction is the Z-axis direction, and arrows X, -X, Y, -Y, The direction indicated by Z and -Z or the indicated side is defined as the front side, the rear side, the right side, the left side, the upper side, the lower side, or the front side, the rear side, the right side, the left side, the upper side, and the lower side, respectively.
In the figure, “•” in “○” means an arrow heading from the back of the page to the front, and “×” in “○” is the front of the page. It means an arrow pointing from the back to the back.
In the following description using the drawings, illustrations other than members necessary for the description are omitted as appropriate for easy understanding.

FIG. 1 is an overall explanatory view of an image forming apparatus according to Embodiment 1 of the present invention.
FIG. 2 is an explanatory diagram illustrating a state in which the opening / closing portion of the image forming apparatus according to the first exemplary embodiment of the present invention is opened.
In FIG. 1, a printer U as an example of an image forming apparatus according to the first exemplary embodiment of the present invention has a sheet feeding container TR1 that accommodates a recording medium S as an example of a medium on which an image is recorded accommodated in a lower portion. A paper discharge section TRh is provided on the upper surface. An operation unit UI is provided at the top of the printer U.
1 and 2, the printer U according to the first embodiment includes an image forming apparatus main body U1 and an opening / closing section U2 that can be opened and closed about a rotation center U2a provided at the lower right end of the image forming apparatus main body U1. The opening / closing unit U2 is an open position (see a solid line in FIG. 2) for opening the inside of the image forming apparatus main body U1 in order to replenish developer, replace a failed member, and remove a paper jammed recording medium S. It is configured to be movable between a closed position (refer to a two-dot chain line in FIG. 1 and FIG. 2) held at a normal time when the forming operation is performed.

  The printer U includes a control unit C that performs various controls of the printer U, an image processing unit GS whose operation is controlled by the control unit C, an image writing device driving circuit DL, a power supply device E, and the like. The power supply device E applies voltages to charging rollers CRy to CRk as an example of a charger described later, developing rollers G1y to G1k as an example of a developer holding member, and transfer rollers T1y to T1k as an example of a transfer device. .

The image processing unit GS converts print information input from an external image information transmission device or the like into latent images corresponding to four color images of K (black), Y (yellow), M (magenta), and C (cyan). The image information is converted into image information for image formation and output to the image writing device driving circuit DL at a predetermined timing. The image writing device driving circuit DL outputs a driving signal to the latent image writing device ROS according to the input image information of each color. The latent image writing device ROS emits laser beams Ly, Lm, Lc, and Lk as an example of image writing light for image writing of each color in accordance with a drive signal.
In FIG. 1, toners as examples of visible images of Y (yellow), M (magenta), C (cyan), and K (black) are displayed on the right side (+ Y direction) of the latent image writing device ROS. Visible image forming apparatuses UY, UM, UC, UK for forming images are arranged.

FIG. 3 is an explanatory view of a visible image forming apparatus which is an example of a detachable body according to the first embodiment of the present invention, FIG. 3A is an explanatory view at the time of use, and FIG. 3B is a state before the initial developer accommodating chamber is opened. It is explanatory drawing of a state.
In FIG. 3, a visible image forming device UK for K (black) has a photoconductor Pk as an example of a rotating image carrier. Around the photosensitive member Pk, a charged member CRk as an example of a power-supplied member and a charger, a developing device Gk that develops an electrostatic latent image on the surface of the photosensitive member into a visible image, and a static elimination that neutralizes the surface of the photosensitive member Pk. A member cleaner Jk, a photoreceptor cleaner CLk as an example of an image carrier cleaner that removes the developer remaining on the surface of the photoreceptor Pk, and the like are disposed. The charging roll CRk is provided with a charger cleaner CRLk that rotates in contact with the charging roll CRk and cleans the surface of the charger CRk as an example of a charger cleaning member.

The surface of the photosensitive member Pk is uniformly charged by the charging roll CRk in the charging area Q1k facing the charging roll CRk as an example of the charging member, and then the latent image is written by the laser beam Lk in the latent image forming area Q2k. It is. The written electrostatic latent image is visualized in the developing region Qgk facing the developing device Gk as an example of the power-supplied member.
The black visible image forming device UK of Example 1 includes a photosensitive member Pk, a charger CRk, a charger cleaner CRLk, a developing device Gk, a charge eliminating member Jk, a photosensitive member cleaner CLk, a developer supply container (11 + 16 + 18), and the like. As shown in FIG. 2, the detachable body configured as described above, that is, a so-called process cartridge UK, is configured to be detachable from the image forming apparatus main body U1 with the opening / closing portion U2 moved to the open position. Yes.
The other color visible image forming apparatuses UY, UM, UC are also configured in the same manner as the black visible image forming apparatus UK, and are detachable with respect to the image forming apparatus main body U1, so-called process cartridges. It is composed of UY, UM, and UC.

  1 and 2, a belt module BM as an example of a recording medium transport device supported by an opening / closing portion U2 is disposed on the right side of the photoreceptors Py to Pk. The belt module BM includes a medium conveying belt B as an example of a recording medium holding and conveying member, a belt driving roll Rd as an example of a driving member that supports the medium conveying belt B, and a driven roll Rj as an example of a driven member. A belt support roll (Rd + Rj) as an example of a holding / conveying member support system, transfer rolls T1y, T1m, T1c, T1k as an example of a transfer device disposed facing each of the photoconductors Py to Pk, and image density detection An image density sensor SN1 as an example of a member, a belt cleaner CLb as an example of a holding and conveying member cleaner, and a recording medium adsorption that is arranged opposite to the driven roll Rj and adsorbs the recording medium S to the medium conveying belt B. It has medium adsorption | suction roll Rk as an example of a member. The medium transport belt B is rotatably supported by the belt support roll (Rd + Rj). The image density sensor SN1 is for detecting the density of a density detection image formed by an image density adjusting means (not shown) of the control unit C, that is, a so-called patch image, at a predetermined time. The adjusting means adjusts the voltage applied to the chargers CRy to CRk, the developing devices Gy to Gk and the transfer rolls T1y to T1k based on the image density detected by the image density detecting member, and the latent image writing light Ly to By adjusting the intensity of Lk, image density adjustment and correction, so-called process control is performed.

The recording medium S in the paper supply container TR1 disposed below the medium conveyance belt B is taken out by the paper supply member Rp and conveyed to the recording medium conveyance path SH.
The recording medium S in the recording medium conveyance path SH is conveyed by a medium conveyance roll Ra as an example of a recording medium conveyance member, and is sent to a registration roll Rr as an example of a paper feed timing adjustment member. The registration roll Rr transports the recording medium S to a recording medium suction position Q6 that is a region where the driven roll Rj and the medium suction roll Rk face each other at a predetermined timing. The recording medium S conveyed to the recording medium adsorption position Q6 is electrostatically adsorbed to the medium conveyance belt B.
When paper is fed from the manual paper feed unit TR0, the recording medium S fed by the manual paper feed member Rp1 is conveyed to the registration roll Rr by the medium conveyance roll Ra and conveyed to the medium conveyance belt B.

The recording medium S adsorbed on the medium conveying belt B sequentially passes through the transfer areas Q3y, Q3m, Q3c, and Q3k that are in contact with the photoreceptors Py to Pk.
To the transfer rolls T1y, T1m, T1c, and T1k disposed on the back side of the medium conveying belt B in the transfer areas Q3y, Q3m, Q3c, and Q3k, toner is supplied at a predetermined timing from the power supply circuit E controlled by the control unit C. A transfer voltage having a polarity opposite to the charging polarity is applied.
In the case of a multicolor image, the toner images on the respective photoreceptors Py to Pk are transferred onto the recording medium S on the medium conveying belt B by the transfer rolls T1y, T1m, T1c, and T1k. In the case of a monochromatic image, so-called monochrome image, only a K (black) toner image is formed on the photoreceptor Pk, and only this K (black) toner image is transferred to the recording medium S by the transfer device T1k. .
After the toner images are transferred, the photoreceptors Py to Pk are neutralized by the neutralization members Jy to Jk in the neutralization areas Qjy to Qjk, and then the toner remaining on the surface is collected by the photoreceptor cleaners CLy to CLk in the cleaning areas Q4y to Q4k. And then charged again by the charging rolls CRy to CRk.

The recording medium S to which the toner image has been transferred is formed in a fixing region Q5 formed by press-contacting a heating roll Fh as an example of a heating fixing member of the fixing device F and a pressure roll Fp as an example of a pressure fixing member. It is fixed by. The recording medium S on which the image is fixed is guided by a guide roller Rgk as an example of a guide member, and is discharged from a discharge roller Rh as an example of a medium discharge member to the medium discharge unit TRh.
The medium conveying belt B after the recording medium S is separated is cleaned by the belt cleaner CLb.
When duplex printing is performed, the paper discharge roller Rh is driven to rotate reversely, the recording medium S is conveyed to the medium reversing path SH2 by the switching member GT1, and is retransmitted to the registration roll Rr with the front and back sides reversed.
Note that the fixing device F, the lower drive roll of the paper discharge roll Rh, the switching member GT1, and the lower guide surface of the medium reversing path SH2 of the first embodiment are integrated and replaceable fixing devices, so-called fixing. It is comprised by unit U3. The driven member on the upper side of the paper discharge roll Rh is supported by the opening / closing part U2.

(Description of visible image forming apparatus)
4 is a cross-sectional view taken along line IV-IV in FIG.
Hereinafter, the visible image forming apparatuses UY to UK will be described in detail. However, since the visible image forming apparatuses UY to UK of the respective colors are configured in the same manner, only the black visible image forming apparatus UK will be described. Description of the other visible image forming apparatuses UY, UM, UC is omitted.
3 and 4, a visible image forming apparatus UK as an example of a power-supplied unit includes a developing unit Uk1 having a developing device Gk, a photoconductor Pk, a charging roll CRk, a photoconductor cleaner CLk, and a charge eliminating roll Jk. An image carrier unit Uk2 as an example of a power-supplied unit and an image carrier unit, and a document through which a laser beam Lk passes between the developing unit Uk1 and the image carrier unit Uk2. An incident light passage path Uk3 is formed.
The developing unit Uk1 includes a developer storage container 1 that stores a developer. The developer container 1 includes a developer container body 1a, a lower developer container body 1a, a lid member 1b that closes the upper surface of the developer container body 1a, and a developer transport chamber, which will be described later, by partitioning the central portion in the horizontal direction of the developer container body 1a. And a central partition member 1c for forming.

The developer container 1 is adjacent to a developer holder housing chamber 2 in which a developing roll G1k as an example of a developer holder facing the photoreceptor Pk is supported, and on the left side of the developer holder chamber 2. A first agitation transport chamber 3 in which the developer is accommodated, and a second agitation transport chamber 4 adjacent to the left side of the first agitation transport chamber 3. Further, a layer thickness regulating member SK is arranged in the developer holding body storage chamber 2 so as to face the developing roll G1k and regulate the layer thickness which is the thickness of the developer carried on the surface of the developing roll G1k. ing.
The first agitation transport chamber 3 and the second agitation transport chamber 4 as an example of a developer storage chamber are partitioned by a partition wall 6, and the first agitation transport chamber 3 and the second agitation transport chamber 4 are The developer is configured to be movable at the outflow portion 6a and the inflow portion 6b at both front and rear ends.
In the developer container 1 of Example 1, a two-component developer containing toner and carrier is accommodated as the developer. The first agitation conveyance chamber 3 and the second agitation conveyance chamber 4 constitute a circulation conveyance chamber (3 + 4), and the developer holding body accommodation chamber 2 and the circulation conveyance chamber (3 + 4) constitute a developer accommodation chamber (2-4). ) Is configured.

In the first agitation conveyance chamber 3 and the second agitation conveyance chamber 4, agitation conveyance members 7 and 8 as an example of a developer conveyance member that conveys the developer in opposite directions while agitating the developer are disposed. The agitating / conveying members 7 and 8 of the first embodiment are configured by agitating / conveying members, so-called augers, having rotating shafts 7a and 8a and spiral conveying blades 7b and 8b fixedly supported by the rotating shafts 7a and 8a. ing. The pair of agitating and conveying members 7 and 8 constitutes the circulating and conveying member (7 + 8) of Example 1.
The agitating and conveying members 7 and 8 of Example 1 have a rotation axis of 4 mm in diameter, a helical diameter that is the outer diameter of the conveying blades 7 b and 8 b, 8 mm, and a shaft while the spiral of the conveying blades 7 b and 8 b rotates once. The pitch, which is the distance traveled in the direction, is set to 15 mm, and the rotation speed is set to 408.39 rpm. These values can be arbitrarily changed according to the design.

In FIG. 3, the lid member 1b is formed with an initial developer accommodating chamber 9 disposed above the second stirring and conveying chamber 4. As shown by a broken line in FIG. 4, an opening 9 a extending in the front-rear direction is formed at the lower end portion of the initial developer accommodating chamber 9.
A cylindrical toner transfer chamber 11 as an example of a developer transfer chamber is formed on the left side of the second stirring transfer chamber 4. A toner replenishing port 11a as an example of a developer replenishing portion connected to the second stirring chamber 4 is formed at the front end of the toner transfer chamber 11, and this position is a toner replenishing position as an example of a developer replenishing position. Is set to A toner inlet 11 b as an example of a developer inlet is formed at the rear end of the toner transfer chamber 11. A toner replenishing member 12 as an example of a developer replenishing member that conveys the developer in the toner transporting chamber 11 to the toner replenishing port 11 a side is disposed in the toner transporting chamber 11.
The toner replenishing member 12 of Example 1 has a rotating shaft 12a having a diameter of 4 mm, an outer diameter of the conveying blade 12b of 8 mm, and a distance that advances in the axial direction during one rotation of the conveying blade 12b. A certain pitch is set to 8 mm and the rotation speed is set to 100 rpm. These values can be arbitrarily changed according to the design.

A first toner supply chamber 16 as an example of a first developer supply chamber is formed on the left side of the toner transfer chamber 11. The first toner supply chamber 16 is formed at the end in the front-rear direction above the first toner supply chamber 16. A second toner replenishing chamber 18 as an example of a second developer replenishing chamber connected via a toner dropping passage 17 as an example of the developer dropping path is disposed. The first toner supply chamber 16 includes a first toner transfer member 21 and a second toner transfer member 22 as an example of a developer supply member that transfers the toner in the first toner supply chamber 16 to the toner inflow port 11b. ing.
The first toner conveying member 21 includes a rotating shaft portion 21a and a conveying thin film portion 21b made of a flexible resin thin film such as PET (polyethylene terephthalate) supported by the rotating shaft portion 21a. The transport thin film portion 21b is formed with a notch 21c that is inclined with respect to the axial direction, and the toner flows into the toner inflow port 11b with increased strength at a position facing the toner inflow port 11b of the transport thin film portion 21b. An auxiliary thin film 23 is attached to facilitate the process. Therefore, when the first toner transport member 21 rotates, the transport thin film portion 21b in which the cut 21c is formed transports the toner to the toner inlet 11b on the rear side, and the toner is transported to the toner transport chamber in the auxiliary thin film 23 portion. 11 is conveyed.

The second toner conveying member 22 conveys toner to the first toner conveying member 21 side. The third toner conveying member 24 and the fourth toner conveying member 26 as examples of the developer replenishing member disposed in the second toner replenishing chamber 18 are configured to transfer the toner in the second toner replenishing chamber 18 to the toner dropping path 17 side. Transport to.
The toner transfer chamber 11, the first toner supply chamber 16, and the second toner supply chamber 18 constitute a toner supply container (11 + 16 + 18) as an example of the developer supply container of the first embodiment. , 26 constitute a toner replenishing member as an example of a developer replenishing member.
The photoreceptor cleaner CLk is disposed on the right side of the second toner supply chamber 18, and the photoreceptor cleaner CLk is a plate-shaped image carrier cleaning member that is in contact with the surface of the photoreceptor Pk, a so-called cleaning blade 31. The recovered toner transport member as an example of the recovered developer transport member that transports the toner, paper powder, discharge product, etc. scraped by the cleaning blade 31 to the recovered toner storage chamber 32 as an example of the recovered developer storage chamber 33.

In FIG. 3B, the visible image forming device UK is provided with a film seal FS as an example of a partitioning member / opening blocking member. The outer end side of the film seal FS is led to the outside through a through hole (not shown) of the visible image forming device Uk, the inner end side is divided into two parts, and one side is the lower surface of the opening 9a. Is pasted. Further, as shown in FIG. 4, the other of the inner ends of the film seal FS is attached so as to close the toner supply port 11 a of the toner transfer chamber 11.
Therefore, the opening 9a is closed by the film seal FS, the initial developer storage chamber 9 is sealed, and the space between the toner transfer chamber 11 and the developer storage chamber (2 to 4) is also sealed.

In Example 1, in the visible image forming apparatus UK to which the film seal FS is attached, the toner and the carrier are mixed at a predetermined ratio in the sealed initial developer storage chamber 9. A two-component developer, so-called initial developer, is accommodated, and toner is accommodated in a developer supply container (11 + 16 + 18) as a developer for supply. The developer storage chambers (2 to 4) are held without any developer. Therefore, in the state where the film seal FS is mounted, the developer does not exist in the developer storage chamber (2-4) and is sealed, so that the developer may leak during storage or transportation in a warehouse. Before the visible image forming apparatus UK is mounted on the image forming apparatus main body U1, the initial developer is accommodated in the developer accommodating chamber (2-4) by removing the film seal FS from the visible image forming apparatus UK. As the developer in the chamber 9 flows in, the toner can be supplied from the toner supply container (11 + 16 + 18).
The developer conveying device according to the first exemplary embodiment is configured by the members 1 to 26 and the members denoted by FS.

FIG. 5 is an explanatory perspective view of the process cartridge according to the first embodiment.
FIG. 6 is an explanatory diagram of the image carrier support member in a state where the power supply member is omitted.
FIG. 7 is a main part explanatory view of a coil spring portion as an example of an urging member for urging the charging roll according to the first embodiment. In FIGS. 3 to 6, the visible image forming unit UK configured by a process cartridge is illustrated. The image carrier Uk2 includes a frame 41 as an example of a power-supplied member support that constitutes the upper surface and the side surface of the visible image forming device UK. In FIG. 6, the frame 41 of Example 1 is made of an insulating ABS (acrylonitrile-butadiene-styrene) resin, and has an upper wall 42 and a front end wall extending downward from both front and rear end portions of the upper wall 42. 43 and the rear end wall 44 are integrally formed. The right end portions of the front end wall 43 and the rear end wall 44 are formed with round hole-shaped image carrier support portions 43a and 44a that rotatably support the front and rear ends of the photoreceptors Py to Pk through bearings (not shown). Has been. 6 and 7, bearing support portions 43b and 44b are formed on the left inner side of the image carrier support portions 43a and 44a. In FIG. 7, a pair of front and rear conductive bearing members 46 that rotatably support both ends of the charging roll CRk and the charger cleaner CRLk are mounted on the bearing support portions 43b and 44b. The bearing member 46 is supported so as to be slidable and mounted on the bearing support portions 43b and 44b along the direction in which the charging roll CRk to be supported approaches and separates from the image carrier Pk. The bearing member 46 is formed with a projecting spring positioning portion 46a as an example of a biasing member other end side fixing portion.

  In FIG. 6, a power supply member support 47 is formed on the left side of the bearing support 43 b of the front end wall 43. The power supply member support portion 47 is formed in a terminal connection side support surface 48 formed on the front outer surface of the front end wall 43 and a shape recessed inwardly below the terminal connection side support portion 48. And a bearing facing side support surface 49 formed to face each other. The support surfaces 48 and 49 are formed with peeling holes 48a and 49a each formed of a through hole as an example of a peeling portion. In the power supply member support portion 47 of the first embodiment, a claw-shaped power supply member drop prevention portion 50 extending inward is formed on both the left and right sides of the terminal connection side support surface 48.

  In FIG. 6, the front and rear end walls 43, 44 are provided with conveying member rotation support portions 51, 52, 53 for rotatably supporting the third toner conveying member 24, the fourth toner conveying member 26 and the collected toner conveying member 33, respectively. Is formed. In FIG. 5, gears 24a, 26a, 33a are supported at the front ends of the transport members 24, 26, 33 supported by the transport member rotation support portions 51-53, and the gears 24a, 26a, 33a The rotation is transmitted from the driven gear 54 rotatably supported at the front end portion of the visible image forming device UK. The driven gear 54 is rotated and meshed with a driving gear (not shown) provided in the image forming apparatus main body U1 in a state where the visible image forming apparatus UK is mounted on the image forming apparatus main body U1. The driven gear 54 according to the first exemplary embodiment transmits the rotation to the toner replenishing member 12, the first toner conveying member 21, and the second toner conveying member 22 of the developing unit Uk1 and drives them. In FIG. 5, a protective cover 56 as an example of a protective member for protecting the driven gear 54 and the gears 24a, 26a, 33a is supported on the front side of the front end wall 43. The protective cover 56 is formed with a guide recess 56 a for guiding a drive gear (not shown) provided in the image forming apparatus main body U <b> 1 to the driven gear 54.

FIG. 8 is an enlarged explanatory view of a main part of the peeling portion of the image carrier support member in a state where the power feeding member is peeled.
FIG. 9 is an enlarged view of a main part of the power supply member portion of the image carrier support member of the process cartridge according to the first embodiment.
5, 7, and 9, a charging power supply member 61 is integrally formed on the power supply member support portion 47 of the front end wall 43. The power supply member 61 of Example 1 is made of conductive POM (polyacetal, poly-oxy-methylene) resin, and is molded integrally with the power supply member support portion 47 made of ABS resin by so-called two-color molding. Has been. The material is not limited to ABS or POM. For example, instead of POM, a material obtained by adding conductivity by adding conductive carbon to a thermoplastic elastomer may be used.
The power supply member 61 includes a plate-like terminal connection portion 61 a that is integrally formed along the surface of the terminal connection side support surface 48 and a plate that is integrally formed on the surface of the bearing facing side support surface 49. Shaped bearing connection portion 61b. In the power supply member 61 of the first embodiment, the terminal connecting portion 61a and the bearing connecting portion 61b are formed in a shape in which plate-like bodies intersecting each other are connected. Further, as shown in FIGS. 8 and 9, the connecting portions 61a and 61b are formed so as to close the peeling holes 48a and 49a.

10 is a cross-sectional view of the peeling portion shown in FIG. 9 taken along the line XX. FIG. 10A is an explanatory diagram of a state where the power feeding terminal comes into contact and power can be fed, and FIG. FIG.
In FIG. 10A, the outer surface of the terminal connecting portion 61a is in contact with the protruding charging power supply terminal U1a extending from the image forming apparatus main body U1 in a state where the visible image forming apparatus UK is mounted on the image forming apparatus main body U1. Thus, charging voltage is supplied to the charging roll CRk.
7 to 9, the bearing connecting portion 61 b is opposed to the spring positioning portion 46 a of the bearing member 46, and is a protrusion-shaped, so-called boss-like spring positioning as an example of a biasing member one end side fixing portion. The part 61c is integrally formed. In FIG. 7, a coil spring 62 that presses the charging roll CRk against the photosensitive member Py is installed as an example of an urging member between the spring positioning portion 46a of the bearing member 46 and the spring positioning portion 61c of the power feeding member. Has been. The coil spring 62 is made of a conductive metal material, and one end side and the other end side are fitted into the spring positioning portions 46a and 61c and are held in a positioned state.

Therefore, in the image carrier Uk2 of the first embodiment, the charging power supply member 61, the coil spring 62, and the bearing member 46 are electrically connected with a conductive material, and by these members, A power supply path (61 + 62 + 46) for supplying power to the charging roll CRk is configured. Therefore, the charging voltage supplied from the power supply terminal U1a of the image forming apparatus main body U1 to the terminal side connection portion 61a communicates with the bearing connection portion 61b from the terminal connection portion 61a of the power supply member 61, and passes through the coil spring 62 and the bearing member 46. And supplied to the charging roll CRk.
In FIG. 5, a developing power supply member 63 for supplying a developing bias to the developing roll G1k is disposed outside the developing unit Uk1 below the power supply member 61 so as to be exposed to the outside. The power supply member 63 is electrically connected to the developing roll G1k. Like the power supply member 61 for charging, the image forming apparatus UK is mounted on the image forming apparatus main body U1 in the state where the visible image forming apparatus UK is mounted. A developing voltage is supplied by contacting the outer surface of a power supply terminal for development (not shown) of the main body U1.

(Description of molding method)
FIG. 11 is a schematic explanatory view of a method of integrally forming the power feeding member, FIG. 11A is an explanatory view when the frame is attached to the first mold, and FIG. 11B is a view illustrating the second mold from the state of FIG. 11A. FIG. 11C is an explanatory diagram of a state in which the resin forming the power supply member is injected from the state where the first mold and the second mold are mounted, and FIG. 11D is a two-color power supply member on the frame It is explanatory drawing of the state shape | molded.
In Example 1, when the charging power supply member 61 is integrally formed on the frame body 41 by two-color molding, first, the frame body 41 with the peeling holes 48a and 49a formed by a conventionally known molding method is used. Mold.

Next, in FIGS. 11A and 11B, the molded frame body 41 with the peeling holes 48 a and 49 a is attached to the first mold 71. In FIG. 11B, at this time, a power supply member forming space 71 a corresponding to the power supply member 61 is formed between the first mold 71 and the frame body 41.
Next, in FIG. 11B and FIG. 11C, the frame body 41 is sandwiched between the second mold 72 facing the first mold 71. At this time, an injection port 72a for resin injection is formed in the second mold 72, and the injection port 72a is set so as to be fitted in the peeling hole 48a of the frame body 41.
Next, in FIG. 11C and FIG. 11D, the resin that forms the power supply member 61 is injected (flowed) into the power supply member forming space 71a from the injection hole 72a, and is solidified to form the power supply member 61.

(Description of peeling method)
FIG. 12 is an explanatory diagram of the deflection when the power supply member is peeled, FIG. 12A is an explanatory diagram of the maximum deflection, and FIG. 12B is an explanatory diagram of the magnitude of the deviation with respect to the unbent state.
In the visible image forming apparatus UK according to the first embodiment, when the visible image forming apparatus UK collected due to the end of use or failure is reused, that is, when it is recycled, the power feeding member 61 made of a material different from that of the frame body 41 is framed. By separating from the body 41, efficient recycling becomes possible. 10B and 12, the power supply member 61 of the first embodiment can easily peel the power supply member 61 by inserting and pushing the rod-shaped jig 76 from the peeling holes 48a and 49a. At this time, as shown in FIG. 12A, the deformation amount of the power supply member 61, that is, the deflection, can be regarded as equivalent (can be approximated) to the both-end support beam that receives the central concentrated load. Therefore, the load by the jig 76 is W, the longitudinal elastic modulus (Young's modulus) is E, the length of the power supply member (length in the X-axis direction) is L, and the width of the power supply member (width in the Z-axis direction) is and is b, second moment and ^{I (= bh 3/12)} , the displacement direction of the (Y axis direction) is pushed the displacement direction (X axis direction) along the length L x, the jig 76 ( When the deflection is y, the following equation (1) is obtained from the equation of deflection in the both-end support beam that receives the central concentrated load.
y = −W · x ³ / (12 · E · I) + W · L ² · x / (16 · E · I) (1)
From this equation, the maximum deflection y _max occurring at the center (the position of x = L / 2) is expressed by equation (2).
y _max = W · L ³ / (48 · E · I) (2)

Here, in FIG. 12B, when the power feeding member 61 is bent, the deviation (length) in the X-axis direction between the positions of both ends with respect to the unbent state is ΔL, and the angle formed with respect to the center of the deflection is θ. When the radius from the center to the neutral plane is r, the following equations (3) to (5) are obtained.
r · θ = L (3)
(R + h / 2) · cos (θ / 2) = (r−y _max + h / 2) Equation (4)
ΔL = L / 2− (ry _max + h / 2) tan (θ / 2) Equation (5)
When r is deleted from the equations (3) and (4) and rearranged, the equation (6) is obtained.
y _max = (L / θ + h / 2) {1-cos (θ / 2)} (6)
Further, in equation (5), θ is minute, approximated as tan (θ / 2) = θ / 2, and arranged by applying equation (3), equation (7) is obtained.
ΔL = (θ / 2) · (y _max −h / 2) (7)
Therefore, when ΔL becomes the length of the power supply member drop prevention portion 50, the power supply member 61 can be removed from the frame body 41. Therefore, the load W cannot be removed even by a certain degree of impact from the formulas (2) and (6). Can be derived when the load is easily removed when the jig 76 is used, and ΔL can be derived from the derived θ and Equation (7). As a result, the claw length ΔL for preventing the drop can be set so that the load W does not come off even with a certain degree of impact and can be easily removed when a person uses the jig 76.

(Operation of Example 1)
In the image forming apparatus U according to the first embodiment having the above-described configuration, the power supply member 61 is integrally formed on the frame body 41 by two-color molding. There is no need to bend, curve, or form a mounting portion or hole for mounting on the frame. That is, machining and post-machining attachment work are omitted, costs are reduced, and attachment errors and the like can be reduced.
In the image forming apparatus U according to the first embodiment, when the power supply member 61 is removed from the frame body 41 by recycling or the like, the power supply member 61 is removed from the frame body 41 by inserting a jig 76 into the peeling holes 48a and 49a. It can be easily removed with little force. In the first embodiment, the power supply member drop prevention unit 50 prevents the power supply member 61 that is molded and fixed in two colors and is not easily peeled off even if the power supply member 61 is peeled off in a normal use state. Furthermore, in the image forming apparatus U according to the first embodiment, when the power feeding member 61 is two-color molded, the resin is injected and molded through the peeling hole 48a, so that the peeling hole 48a is reliably formed. Further, due to the formation of the peeling hole 48a, environmental consideration can be visually appealed.

FIG. 13 is an explanatory diagram of an example of a conventional power supply member, and corresponds to FIG. 9 of the first embodiment.
14 is an enlarged explanatory view of the main part of the caulking portion of the conventional power supply member shown in FIG. 13, FIG. 14A is an explanatory view of the attached state, and FIG. 14B is an explanatory view of removing the power supply member.
In FIG. 13, in the conventional visible image forming apparatus 01, the power feeding member 03 composed of a sheet metal attached to the frame body 02 includes an attached portion 03a and a pair of caulking portions formed on the attached portion 03a. 14b, and the crimping portion 03b is crimped to the protrusion 02a formed on the frame body 02, so that the power feeding member 03 is attached to the frame body 02.
On the other hand, as shown in FIG. 9, in the visible image forming apparatus UK according to the first embodiment, a power feeding member 61 is integrally formed on the frame body 41. That is, it is not necessary to form the attachment portion 03a and the crimping portion 03b as in the prior art, or to bend to form a rib for increasing the rigidity. Resource saving is achieved by omitting the waste material at the time of forming the portion 03b, and further, the cost is reduced by omitting the processing operation and the waste material processing for bending the attached portion 03a and the caulking portion 03b.

Further, in the power supply member 61 according to the first embodiment, the caulking work can be omitted, the attachment becomes easy, and the visible image forming apparatus UK can be automatically assembled by the manufacturing apparatus.
Further, even if the conventional caulking power supply member 03 is removed by recycling or the like, the caulking portion 03b is caught as shown in FIG. 14B, and a force in a direction that prevents the removal is applied. For this reason, in order to remove the power supply member 03, it is necessary to bend the caulking portion 03b outward with a jig such as tweezers as shown by the arrow, and it takes time and effort to remove the jig such as tweezers. It took time and money. On the other hand, in the power supply member 61 of the first embodiment, the peeling holes 48a and 49a and the jig 76 are easily peeled off, and the recycling operation is quickly performed.
In addition, the sheet metal power supply member 03 as in the prior art has a risk of injury when the hand is cut when assembled, but the power supply member 61 of Example 1 can prevent injury during the assembly operation. .

FIG. 15 is an explanatory view corresponding to FIG. 7 of the first embodiment, and is an explanatory view of a connection portion between the conventional power supply member and the charging roll shown in FIG. 13, and FIG. 15A is a state before the power supply member is attached. FIG. 15B is an explanatory diagram of a state where a power feeding member is attached, and FIG. 15C is an explanatory diagram of a state where a coil spring is mounted between the power feeding member and the bearing member.
In FIG. 15A, in the conventional visible image forming apparatus 01, unlike the visible image forming apparatus UK of the first embodiment, a boss-shaped spring positioning portion 02b is formed not on the power supply member 03 but on the frame body 02. It was. As shown in FIG. 15B, the power feeding member 03 is formed with a positioning portion through hole 03c, and the positioning portion through hole 03c fits into the spring positioning portion 02b, so that the charging roll 04 side of the power feeding member 03 is connected. It was positioned and fixed to the frame body 02. A coil spring 07 is mounted between the spring positioning portion 02b and the bearing member 06, and the spring positioning portion 02b combines positioning of the power feeding member 03 and positioning of one end side of the coil spring 06. .

On the other hand, in the power supply member 61 of Example 1 shown in FIG. 7, the spring positioning portion 61c is integrally formed with the power supply member 61 itself, and the positioning portion through hole 03c is formed like the power supply member 03 of the prior art. It is possible to eliminate the mounting work for positioning the positioning part through hole 03c through the spring positioning hole 02b. In the power supply member 61 of the first embodiment, the power supply member 61 having a power supply function and a biasing member fixing function is formed at the same time.
Further, in the power supply member 61 of Example 1, the position of the coil spring 62 is not displaced by the spring positioning portion 61c, and the power supply member 61 and the charging rolls CRy to CRk are reliably electrically connected.

FIG. 16 is a schematic explanatory diagram of a method for integrally forming a power feeding member in a power-supplied unit according to the second embodiment of the present invention, and is an explanatory diagram of a molding method corresponding to FIG. 11 of the first embodiment. Fig. 16B is an explanatory diagram when the frame is attached to the first die, Fig. 16B is an explanatory diagram when the second die is attached from the state of Fig. 16A, and Fig. 16C is the first die and the second die are attached. FIG. 16D is an explanatory view of a state in which the power supply member is molded in two colors on the frame body.
Next, an image forming apparatus according to a second embodiment of the present invention and a visible image forming apparatus as an example of a power supplied unit mounted on the image forming apparatus will be described. In the description of the second embodiment, the first embodiment will be described. Constituent elements corresponding to those constituent elements are denoted by the same reference numerals, and detailed description thereof is omitted. The second embodiment is different from the first embodiment in the following points, but is configured in the same manner as the first embodiment in other points.

16A and 16B, in the second embodiment, when the charging power supply member 61 is integrally formed on the frame body 41 by two-color molding, first, the pre-formed frame body 41 is first molded into the first mold 71. Attach to ′. At this time, as shown in FIG. 11B, the separation hole entry portion 71b ′ as an example of the separation portion entry portion of the first mold 71 ′ enters the separation hole 48a of the frame body 41 and closes the separation hole 48a. Mounted in a state.
Next, in FIGS. 16B and 16C, the frame body 41 is sandwiched between the second mold 72 ′ facing the first mold 71 ′. At this time, an injection port 72a 'for resin injection is formed in the second mold 72'. A power supply member forming space 71 a ′ corresponding to the power supply member 61 is formed between the second mold 72 ′ and the frame body 41.
Next, in FIGS. 16C and 16D, the resin forming the power supply member 61 is injected (poured) into the power supply member forming space 71a ′ from the injection hole 72a ′, and is solidified to form the power supply member 61.

(Operation of Example 2)
In the image forming apparatus U according to the second embodiment having the above-described configuration, the peeling hole 48a is easily and reliably formed by closing the peeling hole 48a with the peeling hole entering portion 71a ′ during two-color molding.
In addition, the power supply member 61 of the second embodiment has the same functions and effects as those of the first embodiment.

(Example of change)
As mentioned above, although the Example of this invention was explained in full detail, this invention is not limited to the said Example, A various change is performed within the range of the summary of this invention described in the claim. It is possible. Modification examples (H01) to (H06) of the present invention are exemplified below.
(H01) In the above-described embodiment, the printer as the image forming apparatus has been exemplified. However, the present invention is not limited to this, and a FAX, a copying machine, or a multifunction machine having all or a plurality of functions may be used. Further, the image forming apparatus is not limited to a multi-color developing image forming apparatus, and may be configured by a monochromatic, so-called monochrome image forming apparatus.

(H02) In the above embodiment, the material to be used is not limited to the material exemplified in the embodiment, and any usable material can be adopted according to the design, specifications, and the like.
(H03) In the above-described embodiment, the power supply member 61 is exemplified as a power supply member for a charger. However, the present invention is not limited to this, and can be applied to a power supply member for a power-supplied member that requires power supply. For example, the present invention can be applied to a power supply member for developing rolls G1y to G1k as an example of a developing member, a power supply member for transfer rolls T1y to T1k as an example of a transfer device, and a power supply member for a static eliminator Jk. In addition to this, the present invention can also be applied to power supply in a model in which a voltage is applied to a cleaning device and electrostatically removed, or in a model including an intermediate transfer body and a secondary transfer device. Moreover, although the charging rolls CRy to CRk are exemplified as the charger, the invention is not limited to this, and the charger can also be applied to a corona discharge type charger, so-called corotron or scorotron.

(H04) In the above embodiment, it is desirable to provide the power supply member drop prevention unit 50, but it may be omitted.
(H05) In the above embodiment, the visible image forming device UK in which the image holding member unit Uk2 and the developing unit Uk1 are unitized is illustrated as the unit to be fed. However, the present invention is not limited to this, and the image holding member unit Uk2 It is also possible to provide a power-supplied unit that can be attached and detached by itself. In addition, it is possible to provide a power-supplied unit that can be attached / detached only by the developing unit Uk1, or to be a power-supplied unit that can be attached / detached only by the transfer units T1y to T1k.

FIG. 17 is an explanatory diagram of a modified example of the present invention, FIG. 17A is an explanatory diagram of Modified Example 1 of the feeding member, FIG. 17B is an illustrative diagram of Modified Example 2 of the feeding member, and FIG. Explanatory drawing and FIG. 17D are explanatory drawings of the modification 4 of an electric power feeding member.
(H06) In FIG. 17, the shape of the power supply member of the above embodiment is not limited to the shape illustrated in Embodiments 1 and 2, and can be changed to any shape. For example, as shown in FIG. 17A, the peeled portion 61d of the power supply member 61 enters the peel hole 48a, and the peeled portion 61d is pushed with a jig 76 or the like as in the first and second embodiments. It can also be configured to peel off. Further, as shown in FIG. 17B, it is also possible to form the part to be peeled 61e so as to enter a part of the peeling hole 48a. Furthermore, as shown in FIG. 17C, it is also possible to form the part to be peeled 61f so as to protrude through the peeling hole 48a. In this case, the power supply member 61 can be peeled from the peeling hole 48 a by pressing the part to be peeled 61 f without using the jig 76. In addition, as shown in FIG. 17D, it is possible to form an entry portion 61g that enters the inside of the power supply member drop prevention portion 50.

FIG. 1 is an overall explanatory view of an image forming apparatus according to Embodiment 1 of the present invention. FIG. 2 is an explanatory diagram illustrating a state in which the opening / closing portion of the image forming apparatus according to the first exemplary embodiment of the present invention is opened. FIG. 3 is an explanatory view of a visible image forming apparatus which is an example of a detachable body according to the first embodiment of the present invention. FIG. 3A is an explanatory view at the time of use, and FIG. It is explanatory drawing of a state. 4 is a cross-sectional view taken along line IV-IV in FIG. FIG. 5 is an explanatory perspective view of the process cartridge according to the first embodiment. FIG. 6 is an explanatory diagram of the image carrier support member in a state where the power supply member is omitted. FIG. 7 is an explanatory view of a main part of a coil spring portion as an example of an urging member that urges the charging roll of the first embodiment. FIG. 8 is an enlarged explanatory view of a main part of the peeling portion of the image carrier support member in a state where the power feeding member is peeled. FIG. 9 is an enlarged view of a main part of the power supply member portion of the image carrier support member of the process cartridge according to the first embodiment. 10 is a cross-sectional view of the peeling portion shown in FIG. 9 taken along the line XX. FIG. 10A is an explanatory diagram of a state where the power feeding terminal comes into contact and power can be fed, and FIG. FIG. FIG. 11 is a schematic explanatory view of a method of integrally forming the power feeding member, FIG. 11A is an explanatory view when the frame is attached to the first mold, and FIG. 11B is a view illustrating the second mold from the state of FIG. 11A. FIG. 11C is an explanatory diagram of a state in which the resin forming the power supply member is injected from the state where the first mold and the second mold are mounted, and FIG. 11D is a two-color power supply member on the frame It is explanatory drawing of the state shape | molded. FIG. 12 is an explanatory diagram of the deflection when the power supply member is peeled, FIG. 12A is an explanatory diagram of the maximum deflection, and FIG. 12B is an explanatory diagram of the magnitude of the deviation with respect to the unbent state. FIG. 13 is an explanatory diagram of an example of a conventional power supply member, and corresponds to FIG. 9 of the first embodiment. 14 is an enlarged explanatory view of the main part of the caulking portion of the conventional power supply member shown in FIG. 13, FIG. 14A is an explanatory view of the attached state, and FIG. 14B is an explanatory view of removing the power supply member. FIG. 15 is an explanatory view corresponding to FIG. 7 of the first embodiment, and is an explanatory view of a connection portion between the conventional power supply member and the charging roll shown in FIG. 13, and FIG. 15A is a state before the power supply member is attached. FIG. 15B is an explanatory diagram of a state where a power feeding member is attached, and FIG. 15C is an explanatory diagram of a state where a coil spring is mounted between the power feeding member and the bearing member. FIG. 16 is a schematic explanatory diagram of a method for integrally forming a power feeding member in a power-supplied unit according to the second embodiment of the present invention, and is an explanatory diagram of a molding method corresponding to FIG. 11 of the first embodiment. Fig. 16B is an explanatory diagram when the frame is attached to the first die, Fig. 16B is an explanatory diagram when the second die is attached from the state of Fig. 16A, and Fig. 16C is the first die and the second die are attached. FIG. 16D is an explanatory view of a state in which the power supply member is molded in two colors on the frame body. FIG. 17 is an explanatory diagram of a modified example of the present invention, FIG. 17A is an explanatory diagram of Modified Example 1 of the feeding member, FIG. 17B is an illustrative diagram of Modified Example 2 of the feeding member, and FIG. Explanatory drawing and FIG. 17D are explanatory drawings of the modification 4 of an electric power feeding member.

Explanation of symbols

41: Power-supplied member support,
48a, 49a ... peeling part,
62 ... biasing member,
61 ... feeding member,
61 + 62 + 46 ... feeding path,
61c ... fixed part,
CRy, CRm, CRc, CRk: Power-supplied member, charger, charging member,
Py, Pm, Pc, Pk ... image carrier,
U: Image forming apparatus,
U1 ... Image forming apparatus main body,
UY, UM, UC, UK: Power-supplied unit.

Claims (6)

A power-supplied member support made of insulating resin that supports a power-supplied member to be fed;
A power supply member made of a conductive resin that forms a power supply path to the power- supplied member and is different from the power-supplied member support formed integrally with the power-supplied member support;
A power-supplied unit comprising: The power-supplied member composed of a charger disposed opposite to an image carrier whose surface is charged;
The power-supplied unit according to claim 1, comprising: The charger composed of a cylindrical charging member;
A conductive biasing member that forms a part of a power feeding path that applies a force to press the charging member against the surface of the image carrier and feeds power to the charging member;
While supporting one end of the urging member, the power supply member having a fixing portion for fixing the urging member in a positioned state;
The power-supplied unit according to claim 2, further comprising: Peeling portion for peeling said feed member of the supply member support is formed on a surface integrally formed, the pre-Symbol feeding conductive member from said power-fed member support,
The power-supplied unit according to any one of claims 1 to 3, further comprising: An image carrier,
A charger for charging the surface of the image carrier;
A power-supplied member support made of insulating resin that supports the image carrier and the charger;
A power supply member made of a conductive resin that forms a power supply path to the charger and is different from the power-supplied member support formed integrally with the charger;
An image carrier unit comprising: An image forming apparatus main body;
The power-supplied unit according to claim 1, wherein the power-supplied unit can be attached to and detached from the image forming apparatus main body.
An image forming apparatus comprising:

Images