Image forming device

Abstract

To prevent deterioration of an image such as chipping of the image formed by a process cartridge mounted in an apparatus body.SOLUTION: An image forming apparatus 1 is such that process cartridges 50 including electrification wires 52 for electrifying photoconductor drums 51y, 51m, 51c, and 51k are removably mounted in an apparatus body 1a, and the image forming apparatus has: cleaning units 200 that are each attached to the process cartridge 50 and movable between a cleaning position for cleaning the electrification wire 52 and a retracted position retracted from the cleaning position; and inhibition members 21 that each inhibit the mounting of the process cartridge 50 in the apparatus body 1a when the cleaning unit 200 is at the cleaning position.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present invention relates to an image forming apparatus such as an electrophotographic copying machine or a printer to which a process cartridge is detachably attached. [Background technology]

[0002] Patent Document 1 discloses an image forming apparatus in which a cartridge equipped with a cleaning member for cleaning a discharge member such as a discharge wire is detachably mounted. The cartridge mounted in the image forming apparatus of Patent Document 1 includes a photosensitive member on which an electrostatic latent image is formed, a discharge member extending along the photosensitive member and facing the photosensitive member, and a cleaning unit that cleans the discharge member by moving along the extension direction of the discharge member. The cleaning unit also has a main body portion that is provided so as to be movable along the extension direction of the discharge member, and an operating portion that protrudes from the main body portion so as to be grippable. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-076925 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in Patent Document 1, if the cleaning unit is not moved to the standby position at the end of the cartridge when cleaning the charging wire, the cleaning unit will block the optical path of the laser. In Patent Document 1, the device main body can be operated with the cleaning unit blocking the optical path of the laser, which poses a problem that when an image is output, the part of the image where the optical path of the laser is blocked will be missing.

[0005] SUMMARY OF THE INVENTION An object of the present invention is to provide an image forming apparatus that can prevent image degradation, such as image loss, caused by a process cartridge mounted in the apparatus main body. [Means for solving the problem]

[0006] The image forming apparatus according to the present invention comprises: an image forming apparatus having a photosensitive drum, a charging member that charges the photosensitive drum, and a cleaning unit including a cleaning member that cleans the charging member and an operation portion that is operated by a user to move the cleaning member between a cleaning position where the charging member is cleaned and a retracted position where the cleaning member is retracted from the cleaning position; a process cartridge that is mountable to the image forming apparatus; a guide portion that guides the process cartridge in an installation direction in which the process cartridge is installed in the image forming apparatus; a stopper that abuts against the process cartridge guided in the installation direction by the guide portion to limit movement of the process cartridge in the installation direction; and a lever portion that is connected to the stopper and moves together with the stopper, and a second position where the stopper does not come into contact with the process cartridge guided by the guide portion in the mounting direction, and when the cleaning member is at the cleaning position when the process cartridge is mounted to the image forming apparatus, the stopper at the first position comes into contact with the process cartridge guided by the guide portion in the mounting direction, thereby disabling the process cartridge from being mounted to the image forming apparatus; and when the cleaning member is at the retracted position when the process cartridge is mounted to the image forming apparatus, the lever portion is pressed by the cleaning unit, causing the lever portion to move and the stopper to move from the first position to the second position, thereby enabling the process cartridge to be mounted to the image forming apparatus. . [Effects of the Invention]

[0007] According to the present invention, it is possible to prevent image degradation, such as missing parts of an image, caused by a process cartridge mounted in the main body of the apparatus. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a perspective view of an image forming apparatus according to an embodiment of the present invention; [Figure 2] 2 is a schematic diagram of the image forming apparatus according to the embodiment of the present invention with the CRG cover closed; FIG. [Figure 3] FIG. 2 is a schematic diagram of the image forming apparatus according to the embodiment of the present invention with the CRG cover open. [Figure 4] 1 is an enlarged perspective view of a portion of an image forming apparatus according to an embodiment of the present invention; [Figure 5] FIG. 2 is a perspective view of a process cartridge according to the embodiment of the present invention. [Figure 6] 1 is an enlarged schematic cross-sectional view of a portion of an image forming apparatus according to an embodiment of the present invention. [Figure 7] 1 is a perspective view of an image forming apparatus according to an embodiment of the present invention, with a process cartridge attached thereto; DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments will be described in detail with reference to the drawings.

[0010] <Configuration of image forming device> The configuration of an image forming apparatus 1 according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 4 and 6. FIG.

[0011] The image forming apparatus 1 includes an apparatus main body 1a, a CRG cover 11, a blocking member 21, a spring 22, an upper support member 23a, a lower support member 23b, an LED exposure unit 40, and a process cartridge 50. The image forming apparatus 1 also includes a conveying roller 70, a sheet conveying belt 73, transfer rollers 74y, 74m, 74c, and 74k, a fixing unit 80, and a pair of discharge rollers 91.

[0012] The apparatus main body 1a is formed with a CRG guide 60 as a guide recess that opens the inside of the apparatus main body 1a to the outside. The CRG guide 60 has a function of guiding the process cartridge 50 when it is attached to the apparatus main body 1a.

[0013] The CRG cover 11 is attached to the apparatus body 1a of the image forming apparatus 1 so as to be able to open and close, and when closed, it holds sheets P as recording materials to be discharged by a pair of discharge rollers 91.

[0014] The blocking member 21 prevents the process cartridge 50 from being attached to the apparatus main body 1a when an operation portion 240 of a cleaning unit 200 (described later) of the process cartridge 50 is not in the retracted position. The blocking member 21 is provided individually for each CRG guide 60. Note that the illustration of the blocking member 21 is omitted in Figures 1 to 3. The configuration of the blocking member 21 will be described in detail later.

[0015] As shown in FIG. 6, the spring 22 as a biasing member biases the blocking member 21 in a direction in which a part of the blocking member 21 protrudes outside the device main body 1a.

[0016] 6, the upper support member 23a is provided inside the device main body 1a and extends above the blocking member 21 in the sliding direction of the blocking member 21. The upper support member 23a is provided at a position where it is not exposed to the outside from the CRG guide 60 when viewed from the direction A in FIG.

[0017] 6, the lower support member 23b is provided inside the device main body 1a and extends below the blocking member 21 in the sliding direction of the blocking member 21. The lower support member 23b is provided at a position where it is not exposed to the outside from the CRG guide 60 when viewed from the direction A in FIG.

[0018] The LED exposure unit 40 irradiates the surfaces of the photosensitive drums 51y, 51m, 51c, and 51k with light based on an image signal to form electrostatic latent images.

[0019] The process cartridges 50 are arranged above the sheet conveying belt 73, and multiple process cartridges 50 are installed along the front-rear direction parallel to the conveying direction of the sheet P. Here, four process cartridges 50 are shown as an example. The process cartridges 50 are configured to be detachably installed in the apparatus main body 1a through the opening 10 when the CRG cover 11 shown in FIG. 3 is open, and are replaceable. The configuration of the process cartridges 50 will be described in detail later.

[0020] The conveying roller 70 is driven to rotate by a motor (not shown), causing the sheet conveying belt 73 to rotate clockwise in FIG.

[0021] The sheet conveying belt 73 conveys the sheet P in synchronization with the toner images of each color formed on the photosensitive drums 51y, 51m, 51c, and 51k.

[0022] The transfer rollers 74y, 74m, 74c, and 74k are provided inside the sheet conveying belt 73. When a voltage is applied to the transfer rollers 74y, 74m, 74c, and 74k, the toner images of each color formed on the photosensitive drums 51y, 51m, 51c, and 51k are sequentially transferred onto the sheet P being conveyed on the sheet conveying belt 73.

[0023] The fixing unit 80 includes a fixing roller 81 incorporating a heater (not shown), and a pressure roller 82. The fixing unit 80 applies heat and pressure to the sheet P onto which the toner image has been transferred by the transfer rollers 74y, 74m, 74c, and 74k, using the fixing roller 81 and the pressure roller 82, thereby fixing the toner image to the sheet P. The fixing unit 80 transports the sheet P onto which the toner image has been fixed toward a pair of discharge rollers 91.

[0024] The pair of discharge rollers 91 discharges the sheet P conveyed from the fixing unit 80 onto the CRG cover 11.

[0025] <Process cartridge configuration> The configuration of the process cartridge 50 of the image forming apparatus 1 according to the embodiment of the present invention will be described in detail with reference to FIG.

[0026] In Figure 5, Figure 5(a) is a perspective view seen from behind in the mounting direction of the process cartridge 50 to the apparatus main body 1a, and Figure 5(b) is a perspective view seen from ahead in the mounting direction of the process cartridge 50 to the apparatus main body 1a.

[0027] The process cartridge 50 includes photosensitive drums 51y, 51m, 51c, and 51k, a holding roller 54, a charging unit 55, a guide protrusion 56, and a developing roller 62.

[0028] The photosensitive drums 51y, 51m, 51c, and 51k are arranged in the front-rear direction. Each of the photosensitive drums 51y, 51m, 51c, and 51k is driven to rotate counterclockwise in FIG.

[0029] One retention roller 54 is provided for each of the photosensitive drums 51y, 51m, 51c, and 51k, and is a member in which a metal rotating shaft is covered with a roller body made of a conductive foam elastic material. The retention roller 54 collects and temporarily holds toner remaining on the surfaces of the photosensitive drums 51y, 51m, 51c, and 51k after transfer. The retention roller 54 is configured to return the held toner to the photosensitive drums 51y, 51m, 51c, and 51k during cleaning. The toner returned to the photosensitive drums 51y, 51m, 51c, and 51k is transferred to the sheet conveying belt 73 and collected by a cleaning unit (not shown).

[0030] The charging unit 55 includes a charging wire 52, a vent 110, a vent 111, a cleaning unit 200, and a counter electrode (not shown), and uniformly charges the surfaces of the photosensitive drums 51y, 51m, 51c, and 51k.

[0031] The charging wire 52 is a metal wire that generates a corona discharge when a predetermined voltage is applied to it. The charging wire 52 is disposed above the photosensitive drums 51y, 51m, 51c, and 51k so as to face the photosensitive drums 51y, 51m, 51c, and 51k, and extends along the axial direction (left-right direction) of the photosensitive drums 51y, 51m, 51c, and 51k.

[0032] The charging wire 52 as a charging member is a plate-like electrode formed in a generally U-shape in side view so as to face a counter electrode (not shown). The counter electrode is composed of a grid electrode located between the charging wire 52 and the photosensitive drums 51y, 51m, 51c, and 51k, and a pair of shield electrodes located in front of and behind the charging wire 52.

[0033] The vent 110 is an air inlet that guides air outside the charging unit 55 to the charging wire 52 .

[0034] The ventilation opening 111 serves both as a guide to enable movement of the cleaning unit 200 and as an exhaust opening for exhausting air around the charged wire 52, and is extended in the left-right direction, which is the extension direction of the charged wire 52.

[0035] The guide projection 56 projects from the side surface of the process cartridge 50 on the front side in the mounting direction relative to the apparatus main body 1a.

[0036] The developing rollers 62y, 62m, 62c, and 62k are configured to supply toner to the photosensitive drums 51y, 51m, 51c, and 51k, respectively. The toner in the container 63 is supplied from a supply roller (not shown), and the supplied toner is regulated to a uniform thickness between the developing rollers 62y, 62m, 62c, and 62k and a layer thickness regulating blade (not shown) is interposed between the developing rollers 62y, 62m, 62c, and 62k. The developing rollers 62y, 62m, 62c, and 62k develop the electrostatic latent images formed on the photosensitive drums 51y, 51m, 51c, and 51k, respectively, with the toner carried thereon, thereby forming toner images on the photosensitive drums 51y, 51m, 51c, and 51k, respectively.

[0037] <Cleaning unit configuration> The configuration of the cleaning unit 200 attached to the process cartridge 50 mounted in the image forming apparatus 1 according to the embodiment of the present invention will be described in detail with reference to FIG.

[0038] The cleaning unit 200 is a member that is attached to the process cartridge 50 and cleans the charging wire 52 , and includes a wire cleaner 210 and an operating portion 240 .

[0039] The wire cleaner 210 comes into sliding contact with the charging wire 52 inside the ventilation opening 111 to wipe off foreign matter adhering to the charging wire 52 .

[0040] The operating portion 240 is movable along the ventilation opening 111 by being operated by the user, and has a protruding portion 241. The protruding portion 241 protrudes downward in the mounting direction of the process cartridge 50 to the apparatus main body 1a in FIG. 5. The protruding portion 241 has an inclined surface 242 at its lower end, which is the tip in the protruding direction.

[0041] The cleaning unit 200 having the above configuration cleans the entire area of ​​the charging wire 52 required for charging the photosensitive drums 51y, 51m, 51c, and 51k by the user operating the operation unit 240 left and right.

[0042] At this time, when the cleaning unit 200 moves to the right end of the process cartridge 50 in FIG. 5, it is positioned outside the charging range required for image formation on the photosensitive drums 51y, 51m, 51c, and 51k. By being positioned outside the charging range, the cleaning unit 200 does not block the optical path of the laser emitted from the LED exposure unit 40 to the photosensitive drums 51y, 51m, 51c, and 51k. This position is the retracted position of the cleaning unit 200.

[0043] Furthermore, by being positioned within the charging range, the cleaning unit 200 blocks the optical path of the laser emitted from the LED exposure unit 40 to the photosensitive drums 51y, 51m, 51c, and 51k. This position is defined as the cleaning position of the cleaning unit 200.

[0044] <Configuration of blocking member> The configuration of the blocking member 21 of the image forming apparatus 1 according to the embodiment of the present invention will be described in detail with reference to FIGS. 4, 6 and 7. FIG.

[0045] In Figure 6, Figure 6(a) shows a state in which the cleaning unit detection portion 21a is not pressed by the protrusion 241, and Figure 6(b) shows a state in which the cleaning unit detection portion 21a is pressed by the protrusion 241.

[0046] The blocking member 21 includes a cleaning unit detection portion 21a and a CRG stopper 21b.

[0047] The cleaning unit detection portion 21a serving as a lever is biased by a spring 22 via a CRG stopper 21b in a direction in which it protrudes from the apparatus main body 1a (to the right in FIG. 6), and slidably protrudes from the mounting surface 1b of the apparatus main body 1a for the process cartridge 50. Here, the protruding direction of the cleaning unit detection portion 21a is opposite to the retracting direction (direction A in FIG. 4) of the blocking member 21. In addition, the retracting direction of the blocking member 21 is a direction perpendicular to the mounting direction of the process cartridge 50 into the apparatus main body 1a.

[0048] The cleaning unit detection portion 21a protrudes from the mounting surface 1b of the process cartridge 50 of the apparatus main body 1a between adjacent process cartridges 50. The cleaning unit detection portion 21a is provided at a position facing the protruding portion 241 when the cleaning unit 200 is in the retracted position. The cleaning unit detection portion 21a has a downwardly inclined surface 21c formed at the tip in the protruding direction of the cleaning unit detection portion 21a.

[0049] The CRG stopper 21b is provided inside the device main body 1a and is biased rightward in FIG. 6 by a spring 22. The CRG stopper 21b is disposed between the upper support member 23a and the lower support member 23b. The CRG stopper 21b is guided by the upper support member 23a and the lower support member 23b to slide in the direction A in FIG. 4, which is the retraction direction of the CRG stopper 21b, or in the direction opposite to direction A. The CRG stopper 21b slides integrally with the cleaning unit detection portion 21a.

[0050] <Mounting Operation of Process Cartridge into Apparatus Main Body> The operation of mounting the process cartridge 50 into the apparatus main body 1a of the image forming apparatus 1 according to the embodiment of the present invention will be described in detail with reference to FIGS.

[0051] First, the operation of mounting the process cartridge 50 into the apparatus main body 1a when the cleaning unit 200 is in the retracted position will be described.

[0052] First, the guide projection 56 of the process cartridge 50 is inserted into the CRG guide 60 of the apparatus main body 1a from above.

[0053] Then, the guide protrusion 56 moves downward while being guided by the CRG guide 60. At this time, the inclined surface 242 of the protrusion 241 of the cleaning unit 200 abuts against the inclined surface 21c of the cleaning unit detection part 21a, and pushes the cleaning unit detection part 21a into the apparatus main body 1a against the biasing force of the spring 22.

[0054] The cleaning unit detection part 21a, which is pushed in by the inclined surface 242 of the protrusion 241, slides in the direction opposite to the protrusion direction, and the CRG stopper 21b also moves in the retraction direction (direction A in FIG. 4) to retract to the retracted position, as shown in FIG. 7. At this time, the CRG stopper 21b is guided in its movement in the retraction direction by the upper support member 23a and the lower support member 23b.

[0055] In this state, the guide protrusion 56 can be inserted into the CRG guide 60 from above without interfering with the CRG stopper 21b. This allows the process cartridge 50 to be attached to the apparatus main body 1a. In this way, the blocking member 21 is pressed by the cleaning unit 200 in the retracted position and retracts, allowing the process cartridge 50 to be attached to the apparatus main body 1a. This allows the cleaning unit 200 to be moved and the blocking member 21 to be retracted by the operating part 240.

[0056] Next, the operation of mounting the process cartridge 50 into the apparatus main body 1a when the cleaning unit 200 is in the cleaning position and not in the retracted position will be described.

[0057] First, the guide projection 56 of the process cartridge 50 is inserted into the CRG guide 60 of the apparatus main body 1a from above.

[0058] Then, the guide protrusion 56 moves downward while being guided by the CRG guide 60. At this time, the inclined surface 242 of the protrusion 241 does not abut against the inclined surface 21c of the cleaning unit detection part 21a, and therefore the cleaning unit detection part 21a cannot be pushed in. Therefore, the cleaning unit detection part 21a does not slide in the direction opposite to the protruding direction, and the CRG stopper 21b does not retract.

[0059] In this state, the guide protrusion 56 interferes with and abuts against the CRG stopper 21b, and therefore cannot be inserted from above into the CRG guide 60. As a result, the process cartridge 50 cannot be mounted in the apparatus main body 1a.

[0060] Further, the blocking member 21 is individually provided for each CRG guide 60. Therefore, when the cleaning unit 200 of any one of the four process cartridges 50 guided by each of the four CRG guides 60 is in the cleaning position, the blocking member 21 prevents the installation of the process cartridge 50 whose cleaning unit 200 is in the cleaning position.

[0061] As described above, the blocking member 21 is pressed by the protruding portion 241 and slides and retreats in a direction perpendicular to the mounting direction of the process cartridge 50 into the apparatus main body 1a, thereby enabling the process cartridge 50 to be mounted in the apparatus main body 1a. This makes it possible to shorten the length of the apparatus main body 1a in the mounting direction.

[0062] Furthermore, by providing spring 22 that biases blocking member 21 in the direction opposite to the retracting direction of blocking member 21, cleaning unit detection portion 21a can be reliably made to protrude from mounting surface 1b.

[0063] Furthermore, by making the cleaning unit detection portion 21a protrude from the mounting surface 1b of the apparatus main body 1a between the adjacent process cartridges 50, it is possible to prevent the apparatus main body 1a from becoming large.

[0064] Furthermore, when the cleaning unit 200 is at the cleaning position, the blocking member 21 interferes with the guide protrusion 56, thereby preventing the process cartridge 50 from being attached to the apparatus main body 1a. This allows the guide protrusion 56, which is guided by the CRG guide 60, to interfere with the blocking member 21 when the cleaning unit 200 is at the cleaning position.

[0065] In this embodiment, the cleaning unit 200 is attached to the process cartridge 50 and is movable between a cleaning position where it cleans the charging wire 52 and a retracted position where it is retracted from the cleaning position. The blocking member 21 blocks the installation of the process cartridge 50 into the apparatus main body 1a when the cleaning unit 200 is in the cleaning position. This makes it possible to prevent image degradation, such as missing parts of an image, caused by the process cartridge 50 installed in the apparatus main body 1a.

[0066] The present invention is not limited to the above-described embodiment, and it goes without saying that various modifications are possible without departing from the spirit and scope of the present invention.

[0067] Specifically, in the above embodiment, the cleaning unit detection portion 21a is slidable, but this is not limiting and the cleaning unit detection portion may be rotatable. In this case, when the process cartridge is attached to the apparatus main body, the cleaning unit detection portion is pressed by the operating portion of the cleaning unit and rotates, thereby retracting the CRG stopper 21b.

[0068] In the above embodiment, the image forming apparatus 1 is a color printer (SFP), but the image forming apparatus is not limited to this and may be a multifunction machine equipped with a reading unit on top of the main body of the apparatus. In this case, the reading unit can be made rotatable and the CRG cover 11 can be configured to open, thereby achieving the same effect.

[0069] In the above embodiment, the process cartridge 50 includes the photosensitive drums 51y, 51m, 51c, and 51k, the holding roller 54, the charging unit 55, and the developing roller 62. However, the process cartridge only needs to include at least the charging unit 55. [Explanation of symbols]

[0070] 1. Image forming device 1a Device body 1b Mounting surface 10 aperture 11 Cover 21 Blocking member 21a Cleaning unit detector 21b CRG stopper 21c slope 22 Spring 23a Upper support member 23b Lower support member 40 Exposure unit 50 Process cartridge 51y Photosensitive drum 51m photosensitive drum 51c Photosensitive drum 51k photosensitive drum 52 Charged Wire 54 Retaining roller 55 Charging unit 56 Guide protrusion 60 CRG Guide 200 cleaning units 210 Wire cleaner 240 Operation section 241 Protrusion 242 Slope

Claims

1. An image forming apparatus, a process cartridge that is mountable to the image forming apparatus, the process cartridge having a photosensitive drum, a charging member that charges the photosensitive drum, and a cleaning unit including a cleaning member that cleans the charging member and an operating portion that is operated by a user to move the cleaning member between a cleaning position where the charging member is cleaned and a retracted position where the cleaning member is retracted from the cleaning position; a guide portion for guiding the process cartridge in a mounting direction of the process cartridge to the image forming apparatus; a stopper that abuts against the process cartridge guided in the mounting direction by the guide portion, thereby limiting movement of the process cartridge in the mounting direction; a lever portion connected to the stopper and moving together with the stopper; Equipped with the stopper is movable between a first position where the stopper abuts against the process cartridge guided in the mounting direction by the guide portion and a second position where the stopper does not abut against the process cartridge guided in the mounting direction by the guide portion, when the cleaning member is at the cleaning position when the process cartridge is mounted to the image forming apparatus, the stopper at the first position abuts against the process cartridge guided by the guide portion in the mounting direction, thereby making it impossible to mount the process cartridge to the image forming apparatus; when the cleaning member is in the retracted position when the process cartridge is to be mounted in the image forming apparatus, the lever portion is pressed by the cleaning unit, whereby the lever portion moves and the stopper moves from the first position to the second position, thereby making it possible to mount the process cartridge in the image forming apparatus; An image forming apparatus characterized by:

2. The image forming apparatus comprises: a biasing member that biases the lever portion via the stopper, when the cleaning member is at the cleaning position when the process cartridge is mounted in the image forming apparatus, the lever portion is urged by the urging member against the process cartridge guided in the mounting direction by the guide portion, causing the stopper positioned at the first position to abut against the process cartridge, thereby making it impossible to mount the process cartridge in the image forming apparatus, when the cleaning member is in the retracted position when the process cartridge is to be mounted in the image forming apparatus, the lever portion biased by the biasing member is pressed by the cleaning unit, and the stopper moves from the first position to the second position against the biasing force of the biasing member, thereby making it possible to mount the process cartridge in the image forming apparatus; 2. The image forming apparatus according to claim 1, wherein the image forming apparatus is a recording medium.

3. The process cartridge is one process cartridge, the guide portion is a first guide portion, the image forming apparatus, a second process cartridge that can be attached to the image forming apparatus; a second guide portion that guides the second process cartridge in a mounting direction in which the second process cartridge is mounted to the image forming apparatus; a conveying member that conveys a recording material; Further provided with the image forming apparatus forms an image on the recording material conveyed by the conveying member; the lever portion is disposed between the first guide portion and the second guide portion in relation to the direction in which the recording material is conveyed by the conveying member; 3. The image forming apparatus according to claim 1, wherein the image forming apparatus is a recording medium.

4. The image forming apparatus, a cover that is provided so as to be openable and closable in order to mount and remove the process cartridge in the image forming apparatus; The cover is When the process cartridge is mounted in the image forming apparatus, the cartridge holder is located vertically above the process cartridge.

4. The image forming apparatus according to claim 1, wherein the image forming apparatus is a recording medium.

5. The process cartridge a developing roller that carries and transports toner to develop the electrostatic latent image formed on the photosensitive drum; 5. The image forming apparatus according to claim 1, wherein the image forming apparatus is a recording medium.

Images