JP4978045B2 - Cleaning device and image forming apparatus having the same - Google Patents

Description

  The present invention relates to a cleaning device that cleans the surface of a charging roll that charges the surface of a photoreceptor, and an image forming apparatus including the cleaning device.

  In recent years, image quality has been improved and image quality defects caused by charging rolls have become a problem. For example, if a minute foreign matter adheres to the charging roll, a charging failure on the photosensitive member occurs, resulting in a white point or a color point on the charging roll pitch, thereby causing an image defect. In addition, if toner, paper powder, external additives contained in the toner, discharge products, etc. adhere to the surface of the charging roll in a filming state, the charging performance may change and image quality may be deteriorated.

Accordingly, some image forming apparatuses include a cleaning device that cleans toner, dust, and the like attached to the surface of the charging roll. (Patent Document 1)
The cleaning device includes a plate-like cleaning sheet, and the surface of the charging roll is cleaned by bringing the cleaning sheet into surface contact with the charging roll and reciprocating in the axial direction of the charging roll.

As described above, since the cleaning sheet is in surface contact with the charging roll, the charging roll is not locally pressed. Thereby, the charging roll is not deformed.
JP 11-288150 A

  However, since the cleaning sheet moves back and forth in the axial direction of the charging roll to clean the surface of the charging roll, dust or the like peeled off from the charging roll rolls between the charging roll and the cleaning sheet, and dust is collected on the surface of the charging roll. May adhere again.

  In consideration of the above-described facts, the present invention provides a cleaning device capable of cleaning the surface of the charging roll without reattaching dust or the like peeled off from the surface of the charging roll, and an image forming apparatus including the same. This is a problem.

A cleaning device according to claim 1 of the present invention is a cleaning device that cleans the surface of a charging roll that charges the surface of a photoreceptor, and a sheet-like cleaning member that contacts the surface of the charging roll in a bent state; First cleaning means for reciprocating the cleaning member in a tangential direction of the charging roll, and the sheet-like cleaning member extends obliquely with respect to the direction in which the cleaning member reciprocates and has a hole wall In this case, an elongated hole is provided in contact with the surface of the charging roll.

  According to the above configuration, the cleaning member is brought into contact with the surface of the charging roll in a bent state, and the first driving unit reciprocates the cleaning member in the tangential direction of the charging roll to clean the surface of the charging roll.

  Since the cleaning member is reciprocated in the tangential direction of the charging roll, foreign matter such as dust removed from the charging roll is scraped off in the tangential direction and does not stay between the cleaning member and the charging roll.

In this way, since dust or the like peeled off from the surface of the charging roll does not stay between the cleaning member and the charging roll, the surface of the charging roll can be cleaned without reattaching the dust or the like.
Specifically, the cleaning sheet reciprocates in a state where the edge of the hole wall of the long hole provided in the cleaning sheet is in contact with the surface of the charging roll and scrapes dust and the like adhering to the surface of the charging roll. Here, since the elongated holes are provided so as to extend obliquely with respect to the moving direction of the cleaning sheet, all the edges of the hole walls of the elongated holes contact the surface of the charging roll at an angle. For this reason, dust etc. can be efficiently peeled off from the surface of the charging roll. Also, the dust and the like scraped off are discharged from the long hole.

A cleaning device according to claim 2 of the present invention is a cleaning device that cleans the surface of a charging roll that charges the surface of a photoreceptor, and a sheet-like cleaning member that contacts the surface of the charging roll in a bent state; Second cleaning means for reciprocating the cleaning member in the circumferential direction of the charging roll, and the sheet-like cleaning member extends obliquely with respect to the reciprocating direction of the cleaning member, and has a hole wall. In this case, an elongated hole is provided in contact with the surface of the charging roll.

  According to the above configuration, the second driving unit reciprocates the cleaning member in the circumferential direction of the charging roll. As a result, foreign matter such as dust removed from the charging roll is scraped off in the circumferential direction with the same force and does not stay between the cleaning member and the charging roll.

In this way, since dust or the like peeled off from the surface of the charging roll does not stay between the cleaning member and the charging roll, the surface of the charging roll can be cleaned without reattaching the dust or the like.
Specifically, the cleaning sheet reciprocates in a state where the edge of the hole wall of the long hole provided in the cleaning sheet is in contact with the surface of the charging roll, and scrapes dust and the like adhering to the surface of the charging roll. Here, since the elongated holes are provided so as to extend obliquely with respect to the moving direction of the cleaning sheet, all the edges of the hole walls of the elongated holes contact the surface of the charging roll at an angle. For this reason, dust etc. can be efficiently peeled off from the surface of the charging roll. Also, the dust and the like scraped off are discharged from the long hole.

According to a third aspect of the present invention, there is provided a cleaning device for cleaning a surface of a charging roll for charging a surface of a photosensitive member. First driving means for reciprocating the cleaning member in a tangential direction of the charging roll, and the free end portion of the sheet-like cleaning member extends obliquely with respect to the direction in which the cleaning member reciprocates. In addition, a notch is provided in which the edge of the cut wall contacts the surface of the charging roll.

According to the above configuration, the cleaning member is brought into contact with the surface of the charging roll in a bent state, and the first driving unit reciprocates the cleaning member in the tangential direction of the charging roll to clean the surface of the charging roll.
  Since the cleaning member is reciprocated in the tangential direction of the charging roll, foreign matter such as dust removed from the charging roll is scraped off in the tangential direction and does not stay between the cleaning member and the charging roll.
  In this way, since dust or the like peeled off from the surface of the charging roll does not stay between the cleaning member and the charging roll, the surface of the charging roll can be cleaned without reattaching the dust or the like.
  Specifically, the cleaning sheet reciprocates while the edge of the cut wall provided at the free end of the cleaning sheet is in contact with the surface of the charging roll, and scrapes dust and the like adhering to the surface of the charging roll. Drop it. Here, since the cutouts are provided so as to extend obliquely with respect to the moving direction of the cleaning sheet, all the edges of the cut wall of the cutout are in contact with the surface of the charging roll at an angle. For this reason, dust etc. can be efficiently peeled off from the surface of the charging roll. Moreover, dust and the like that are scraped off are discharged from the notch.

A cleaning device according to claim 4 of the present invention is a cleaning device for cleaning the surface of a charging roll that charges the surface of a photoreceptor, and a sheet-like cleaning member that contacts the surface of the charging roll in a bent state; Second driving means for reciprocating the cleaning member in the circumferential direction of the charging roll, and the free end of the sheet-like cleaning member extends obliquely with respect to the reciprocating direction of the cleaning member. In addition, a notch is provided in which the edge of the cut wall contacts the surface of the charging roll.

According to the above configuration, the second driving unit reciprocates the cleaning member in the circumferential direction of the charging roll. As a result, foreign matter such as dust removed from the charging roll is scraped off in the circumferential direction with the same force and does not stay between the cleaning member and the charging roll.
  In this way, since dust or the like peeled off from the surface of the charging roll does not stay between the cleaning member and the charging roll, the surface of the charging roll can be cleaned without reattaching the dust or the like.
  Specifically, the cleaning sheet reciprocates while the edge of the cut wall provided at the free end of the cleaning sheet is in contact with the surface of the charging roll, and scrapes dust and the like adhering to the surface of the charging roll. Drop it. Here, since the cutouts are provided so as to extend obliquely with respect to the moving direction of the cleaning sheet, all the edges of the cut wall of the cutout are in contact with the surface of the charging roll at an angle. For this reason, dust etc. can be efficiently peeled off from the surface of the charging roll. Moreover, dust and the like that are scraped off are discharged from the notch.

  An image forming apparatus according to a fifth aspect of the present invention employs the cleaning device according to any one of the first to fourth aspects.

  According to the above configuration, since the cleaning device according to any one of claims 1 to 4 is employed, the cleaning member does not reattach dust or the like removed from the surface of the charging roll. Can clean the surface

  According to the present invention, the surface of the charging roll can be cleaned without reattaching dust or the like removed from the surface of the charging roll.

  A first embodiment of an image forming apparatus employing the cleaning device of the present invention will be described with reference to FIGS.

  As shown in FIG. 4, the image forming apparatus 100 performs image processing based on color image information sent from an image data input device such as a personal computer (not shown), and records it as a recording medium by electrophotography. A color image is formed on the paper P.

  The image forming apparatus 100 includes image forming units 10Y, 10M, 10C, and 10K that form toner images of respective colors of yellow (Y), magenta (M), cyan (C), and black (K). In the following, when it is necessary to distinguish YMCK, description will be made by adding any of Y, M, C, and K after the reference. When YMCK does not need to be distinguished, Y, M, C, K is omitted.

  The image forming units 10Y, 10M, 10C, and 10K are arranged so that the image forming units 10Y, 10M, 10C, and 10K move in the traveling direction of the endless intermediate transfer belt 30 that is stretched by the backup roll 34 and the plurality of stretch rolls 32. They are arranged in series in the order of 10K. In addition, the intermediate transfer belt 30 is provided with primary transfer rolls 16Y and 16M arranged to face the photosensitive drums 12Y, 12M, 12C, and 12K as the photosensitive bodies of the image forming units 10Y, 10M, 10C, and 10K, respectively. , 16C, and 16K.

  Next, the configuration of each of the image forming units 10Y, 10M, 10C, and 10K and the image forming operation will be described with respect to the image forming unit 10Y that forms a yellow toner image.

  The surface of the photosensitive drum 12Y is uniformly charged by a charging roll 13Y as a charging member. The surface of the charging roll 13Y is cleaned by a cleaning device 50Y including a cleaning sheet 52Y that can be bent and deformed as a cleaning member. The details of the cleaning device 50Y will be described later.

  Next, image exposure corresponding to the yellow image is performed by the exposure device 14Y, and an electrostatic latent image corresponding to the yellow image is formed on the surface of the photosensitive drum 12Y.

  The electrostatic latent image corresponding to the yellow image is developed by the toner carried on the developing roll 18Y to which the developing bias of the developing device 15Y is applied, and becomes a yellow toner image. The yellow toner image is primarily transferred onto the intermediate transfer belt 30 by the pressing force of the primary transfer roll 16Y and the electrostatic attraction force by the transfer bias applied to the primary transfer roll 16Y.

  In this primary transfer, the entire yellow toner image is not transferred to the intermediate transfer belt 30, and a part of the yellow toner image remains on the photosensitive drum 12Y as transfer residual yellow toner. Further, an external additive of toner is also attached to the surface of the photosensitive drum 12Y. After the primary transfer, the photosensitive drum 12Y passes through a position facing the cleaning device 20Y, and transfer residual toner and the like on the surface of the photosensitive drum 12Y are removed. Thereafter, the surface of the photosensitive drum 12Y is charged again by the charging roll 13Y for the next image forming cycle.

  In the image forming apparatus 100, the image forming process similar to the above is performed at the timing considering the relative positions of the image forming units 10Y, 10M, 10C, and 10K. At 10K, Y, M, C, and K color toner images are sequentially superimposed on the intermediate transfer belt 30 to form a multiple toner image.

  Then, the multiple toner images are batched from the intermediate transfer belt 30 by the electrostatic attraction force of the secondary transfer roll 36 to which the transfer bias is applied to the recording paper P conveyed to the secondary transfer position A at a predetermined timing. Then, it is transferred onto the recording paper P.

  The recording paper P to which the multiple toner images have been transferred is separated from the intermediate transfer belt 30, and then conveyed to the fixing device 31, where it is fixed to the recording paper P by heat and pressure, thereby forming a full color image.

  The transfer residual toner on the intermediate transfer belt 30 that has not been transferred to the recording paper P is collected by the intermediate transfer belt cleaner 33.

  Next, the cleaning device 50 will be described in detail.

  As shown in FIG. 3, the cleaning device 50 provided on the top of the charging roll 13 is provided with a plate-like cleaning sheet 52 that comes into contact with the charging roll 13, and the end of the cleaning sheet 52 is charged at the end. A support member 54 having a rectangular cross section extending in the axial direction of the roll 52 is provided. The support member 54 is rotated to bend the cleaning sheet 52, and the cleaning sheet 52 contacts the surface of the charging roll 13 by the reaction force.

  As shown in FIG. 1, a motor 56 fixed to the frame member is provided above both ends of the support member 54, and the cleaning sheet 52 is moved in the tangential direction of the charging roll 13 by the rotational force of the motor 56 (see FIG. 1). The surface of the charging roll 13 is cleaned by reciprocating in the indicated K direction). In this embodiment, the reciprocating movement is set to be always performed during the image forming operation by the control unit that controls the image forming operation.

  Specifically, a pin 54A is provided at the end of the support member 54, and the pin 54A can move in a groove 58A extending in the K direction provided in a guide rail 58 fixed to a frame member (not shown). ing. The support member 54 is provided with a stopper that hits the guide rail, and the support member 54 does not rotate. Further, the pin 54A is fitted in a long hole 60A provided at the tip of the rod-shaped link 60, and is relatively movable in the long hole 60A. Also, the base end portion of the link 60 is provided with a long hole 60 </ b> C like the tip portion, and one end of the rotating rod 62 is movably fitted by the rotational drive of the motor 56. Further, the link 60 is pivotally supported by the frame member at the shaft portion 60B at a substantially central portion in the length direction. Further, the base end portion of the rod 62 provided with one end movably in the elongated hole 60C is fixed to the rotating shaft of the motor 56, and is configured to rotate in the L direction shown in FIG.

  With this configuration, as shown in FIG. 2A, when the rod 62 whose base end is fixed to the motor 56 is in a horizontal state, the pin 54A is positioned at one end of the groove 58A. Further, as shown in FIG. 2B, when the motor 56 rotates and one end of the rod 62 faces downward and the rod 62 moves to a vertical state, the link 60 rotates around the shaft portion 60B, The pin 54A that can be relatively moved in the elongated hole 60A moves to the center of the groove 58A. Further, as shown in FIG. 2C, when the rod 62 moves to the horizontal state, the pin 54A moves to the other end of the groove 58A. Further, as shown in FIG. 2D, when one end of the rod 62 faces upward and the rod 62 moves to the vertical state, the pin 54A moves to the center of the groove 58A. Further, the motor 56 rotates to return the pin 54A to the original position as shown in FIG. As described above, the motor 56 makes one rotation, so that the pin 54A reciprocates once in the groove 58A. Thereby, the support member 54 and the cleaning sheet 52 can also reciprocate in the tangential direction (K direction shown in FIG. 2) of the charging roll 13 (see FIG. 1).

  In this way, the cleaning sheet 52 is moved back and forth in the tangential direction (K direction) of the charging roll 13 in a state where the cleaning sheet 52 is in contact with the surface of the charging roll 13. Is scraped off in the tangential direction and does not stay between the cleaning sheet 52 and the charging roll 13.

  As a result, the surface of the charging roll 13 can be cleaned without causing dust or the like removed from the surface of the charging roll 13 to reattach to the charging roll 13.

  Further, since dust or the like does not stay between the cleaning sheet 52 and the charging roll 13, the surface of the charging roll 13 is not damaged.

  Although the present invention has been described in detail with respect to specific embodiments, the present invention is not limited to such embodiments, and various other embodiments are possible within the scope of the present invention. It is clear to the contractor. For example, in the first embodiment, the reciprocating movement of the cleaning sheet 52 is always performed during the image forming operation. However, the present invention is not limited to this, and a cleaning cycle may be provided at a certain timing other than the image forming operation to reciprocate. good. Since this image forming apparatus is provided with a collection box (not shown) that collects dust and the like scraped off by the cleaning sheet 52, the dust and the like are not scattered regardless of when the cleaning sheet 52 is operated.

  Next, a second embodiment of an image forming apparatus employing the cleaning device of the present invention will be described with reference to FIG.

  In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  In this embodiment, unlike the first embodiment, the motor 56 (see FIG. 1) for reciprocating the support member 54 and the cleaning sheet 52 is not provided, and a solenoid 70 is provided instead.

  Note that guide rails or the like may be provided at both ends of the support member 54 to support the reciprocating movement of the support member 54.

  Specifically, the solenoids 70 fixed to the frame member are disposed at both ends of the support member 54, and the distal ends of the movable rods 70 </ b> A of the solenoid 70 are fixed to both ends of the support member 54.

  With this configuration, the movable rod 70 </ b> A of the solenoid 70 is reciprocated in the tangential direction (K direction) of the charging roll 13 in accordance with an instruction from the control unit. Accordingly, the cleaning sheet 52 is reciprocated in the tangential direction (K direction) of the charging roll 13.

  In this manner, the cleaning sheet 52 can be easily reciprocated by using the solenoid 70.

  Next, a third embodiment of an image forming apparatus employing the cleaning device of the present invention will be described with reference to FIG.

  In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  In this embodiment, unlike the first embodiment, the motor 56 (see FIG. 1) for reciprocating the support member 54 and the cleaning sheet 52 is not provided, and instead, a rack and pinion mechanism 74 is provided. ing.

  Specifically, the rack and pinion mechanism 74 includes a rack shaft 76 provided with a rack 76 </ b> A and a pinion 78 that meshes with the rack 76. The rack shaft 76 is movable along a guide portion 80A extending in the K direction of the guide member 80 fixed to the frame member. Further, a support member 54 is fixed to the tip of the rack shaft 76.

  With this configuration, a motor (not shown) rotates the pinion 78 in the normal direction and reverses the rack shaft 76 in the K direction in accordance with an instruction from the control unit. Accordingly, the cleaning sheet 52 is reciprocated in the tangential direction (K direction) of the charging roll 13.

  Thus, by using the rack and pinion mechanism 74, the cleaning sheet 52 can be reliably reciprocated.

  Next, a fourth embodiment of the image forming apparatus employing the cleaning device of the present invention will be described with reference to FIG.

  In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  In this embodiment, unlike the first embodiment, the motor 56 (see FIG. 1) for reciprocating the support member 54 and the cleaning sheet 52 in the tangential direction is not provided. Instead, the support member 54 and the cleaning sheet are provided. A solenoid 86 that reciprocally moves 52 in the circumferential direction of the charging roll 13 is provided.

  Specifically, one end of the support 82 is fixed to both ends of the support member 54, and the other end of the support 82 is pivotally supported on the rotation shaft of the charging roll 13. Further, the pins 54A provided at both ends of the support member 54 are movable in a long hole 86B provided at the tip of the movable rod 86A of the solenoid 86 fixed to the frame member.

  With this configuration, the movable rod 86A of the solenoid 86 reciprocates in the tangential direction (N direction shown in FIG. 7) of the charging roll 13 in accordance with an instruction from the control unit. Further, the pin 54 reciprocates along the circumferential direction of the charging roll 13 (M direction shown in FIG. 7) while moving in the elongated hole 86B. Thereby, the cleaning sheet 52 reciprocates in the circumferential direction (M direction) of the charging roll 13.

  As described above, since the cleaning sheet 52 is reciprocated in the circumferential direction of the charging roll 13, foreign matters such as dust removed from the charging roll 13 are scraped off in the circumferential direction, and the gap between the cleaning sheet 52 and the charging roll 13 is removed. It will not stay.

  For this reason, the surface of the charging roll 13 can be cleaned without reattaching dust or the like to the charging roll 13.

  Next, a fifth embodiment of an image forming apparatus employing the cleaning device of the present invention will be described with reference to FIGS.

  In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  In this embodiment, unlike the first embodiment, the cleaning sheet 52 is provided with a plurality of elongated holes 52A extending along the axial direction of the charging roll 13 with respect to the direction in which the cleaning sheet 52 reciprocates. .

  Further, as shown in FIG. 8B, since the elongated holes 52A are provided so as to extend obliquely with respect to the moving direction of the cleaning sheet 52, the edge 52B of the hole wall of the elongated holes 52A is all charged at an angle. It touches the surface. For this reason, dust or the like can be efficiently peeled off from the surface of the charging roll 13. Furthermore, as shown in FIG. 9, adjacent long holes 52 </ b> A are provided so as to wrap in the axial direction of the charging roll 13.

  With this configuration, the edge 52 </ b> B of the long hole 52 </ b> A provided in the cleaning sheet 52 contacts the surface of the charging roll 13, and the cleaning sheet 52 reciprocates to scrape off dust attached to the surface of the charging roll 13. . Further, the one-way moving distance of the reciprocating movement is set to be larger than the P dimension (dimension in the moving direction of the elongated hole 52A) of the elongated hole 52A shown in FIG.

  In this way, the adjacent long holes 52A are wrapped and the one-way moving distance is made larger than the P dimension of the long holes 52A, so that the edge 52B of the hole wall of the long holes 52A is evenly distributed from the surface of the charging roll 13. Dust and the like can be removed. Further, dust and the like scraped off can be discharged from the long hole 52A.

  For this reason, the removed dust or the like does not get caught between the cleaning sheet 52 and the charging roll 13.

  Next, a sixth embodiment of the image forming apparatus employing the cleaning device of the present invention will be described with reference to FIGS.

  In addition, about the same member as 5th Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  In this embodiment, unlike the fifth embodiment, the cleaning sheet 52 is not provided with a long hole 52A. Instead, a notch 52D extending obliquely with respect to the direction in which the cleaning sheet 52 reciprocates is provided. A plurality of cleaning sheets 52 are provided along the axial direction of the charging roll 13 at the free end.

  10B, the edge 52E of the cut wall of the notch 52D is provided so as to contact the surface of the charging roll 13. As shown in FIG. Further, as shown in FIG. 11, adjacent notches 52D are provided so as to wrap in the axial direction of the charging roll 13.

  With this configuration, the edge 52E of the cut wall of the notch 52D provided in the cleaning sheet 52 makes contact with the surface of the charging roll 13, and the cleaning sheet 52 reciprocates to scrape off dust and the like adhering to the surface of the charging roll 13. . The one-way movement distance of the reciprocating movement is set to be larger than the R dimension (dimension in the movement direction of the notch 52D) of the notch 52D shown in FIG.

  In this way, the adjacent cutouts 52D are wrapped and the one-way moving distance is made larger than the R dimension of the cutouts 52D. Dust and the like can be removed. Further, dust and the like scraped off can be discharged from the notch 52D.

  For this reason, the removed dust or the like does not get caught between the cleaning sheet 52 and the charging roll 13.

It is a side view of the cleaning device concerning a 1st embodiment of the present invention. (A) It is the side view which showed drive parts, such as a motor, of the cleaning apparatus which concerns on 1st Embodiment of this invention, and showed the state in which the pin of a supporting member is located in the edge part of a groove | channel. (B) It is the side view which showed drive parts, such as a motor of the cleaning apparatus which concerns on 1st Embodiment of this invention, and showed the state in which the pin of a supporting member is located in the center part of a groove | channel. (C) It is the side view which showed drive parts, such as a motor, of the cleaning apparatus which concerns on 1st Embodiment of this invention, and showed the state in which the pin of a supporting member is located in the other end part of a groove | channel. (D) It is the side view which showed the drive parts, such as a motor, of the cleaning apparatus which concerns on 1st Embodiment of this invention, and showed the state in which the pin of a supporting member is located in the center part of a groove | channel. 1 is a perspective view of a cleaning device according to a first embodiment of the present invention. 1 is a schematic configuration diagram of an image forming apparatus employing a cleaning device according to a first embodiment of the present invention. It is a side view of the cleaning apparatus which concerns on 2nd Embodiment of this invention. It is a side view of the cleaning apparatus which concerns on 3rd Embodiment of this invention. It is a side view of the cleaning apparatus which concerns on 4th Embodiment of this invention. (A) It is a perspective view of the cleaning apparatus which concerns on 5th Embodiment of this invention. (B) It is the expansion perspective view which showed the long hole of the cleaning apparatus which concerns on 5th Embodiment of this invention. It is the top view which showed the cleaning sheet which concerns on the cleaning apparatus which concerns on 5th Embodiment of this invention. (A) It is a perspective view of the cleaning apparatus which concerns on 6th Embodiment of this invention. (B) It is the expansion perspective view which showed the notch of the cleaning apparatus which concerns on 6th Embodiment of this invention. It is the top view which showed the cleaning sheet which concerns on the cleaning apparatus which concerns on 6th Embodiment of this invention.

Explanation of symbols

12 Photosensitive drum (photosensitive member)
13 Charging roll 50 Cleaning device 52 Cleaning sheet (sheet material)
52A Long hole 52B Hole wall edge 52D Notch 52E Cut wall edge 56 Motor (first drive means)
70 Solenoid (first driving means)
74 Rack and pinion mechanism 86 Solenoid (second drive means)
100 Image forming apparatus

Claims (5)

In the cleaning device for cleaning the surface of the charging roll for charging the surface of the photoreceptor,
A sheet-like cleaning member that comes into contact with the surface of the charging roll in a bent state;
First driving means for reciprocating the cleaning member in a tangential direction of the charging roll,
The sheet-like cleaning member is provided with an elongated hole that extends obliquely with respect to the direction in which the cleaning member reciprocates and that has an edge of a hole wall in contact with the surface of the charging roll . In the cleaning device for cleaning the surface of the charging roll for charging the surface of the photoreceptor,
A sheet-like cleaning member that comes into contact with the surface of the charging roll in a bent state;
Second driving means for reciprocating the cleaning member in the circumferential direction of the charging roll,
The sheet-like cleaning member is provided with an elongated hole that extends obliquely with respect to the direction in which the cleaning member reciprocates and that has an edge of a hole wall in contact with the surface of the charging roll .   In the cleaning device for cleaning the surface of the charging roll for charging the surface of the photoreceptor,
  A sheet-like cleaning member that comes into contact with the surface of the charging roll in a bent state;
  First driving means for reciprocating the cleaning member in a tangential direction of the charging roll,
  A cleaning device in which a free end portion of the sheet-like cleaning member is provided with a notch that extends obliquely with respect to a direction in which the cleaning member reciprocates, and an edge of a cut wall contacts the surface of the charging roll.   In the cleaning device for cleaning the surface of the charging roll for charging the surface of the photoreceptor,
  A sheet-like cleaning member that comes into contact with the surface of the charging roll in a bent state;
  Second driving means for reciprocating the cleaning member in the circumferential direction of the charging roll,
  A cleaning device in which a free end portion of the sheet-like cleaning member is provided with a notch that extends obliquely with respect to a direction in which the cleaning member reciprocates, and an edge of a cut wall contacts the surface of the charging roll.   An image forming apparatus, wherein the cleaning device according to claim 1 is employed.

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