JP2007304334A - Cleaning device for image forming apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cleaning device for an image forming apparatus that corrects creep deformation of a cleaning blade or sealing member, which occurs as a result of pressing the cleaning blade against an image carrier. <P>SOLUTION: In the cleaning device 30, the cleaning blade 31 is disposed such that its one end is fixed to a mounting member 33 formed from a spring rotated around a rotation shaft 34, and the sealing member 32 is disposed such that its one end is fixed to a part extended from the mounting member 33. A pressing member 35 is disposed on the back of the cleaning blade 31. When the cleaning blade 31 is set in a separated position, the pressing member 35 is brought into contact with the back of the cleaning blade 31 such that the cleaning blade 31 is pressed in a direction opposite to the direction in which the cleaning blade 31 is curved when it is in a pressure-contact position where the blade 31 is pressed against an intermediate transfer belt 21. Thus, creep deformation of the cleaning blade or sealing member is corrected. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image forming apparatus including a cleaning device that cleans residual toner remaining on an image carrier of an image forming apparatus such as an electronic copying machine, a printer, a facsimile machine, or a multi-function machine. .

  In an electrophotographic image forming apparatus, an image latent image formed on an image carrier is developed with toner, and the toner image formed on the image carrier is temporarily transferred to an intermediate transfer member and then transferred to a recording medium. Alternatively, a process of directly transferring to a recording medium and fixing the recording medium on which the toner image is transferred to form an image is taken.

  When the toner image formed on the image carrier is transferred to an intermediate transfer member or a recording medium, the toner that has not been transferred remains on the image carrier, but the residual toner interferes with the next image formation. From the above, cleaning is performed by a cleaning device.

  As such a cleaning device, a device using a rubber cleaning blade having elasticity that presses against the surface of the image carrier or the intermediate transfer member is widely used, and the cleaning device is disposed upstream or downstream of the cleaning blade. Is provided with a seal member for preventing the collected toner from scattering.

  FIG. 9 is a cross-sectional view for explaining an example of the configuration of the above-described conventional cleaning apparatus 100. FIG. 9A shows a state in which the cleaning blade is in pressure contact with the image carrier, and FIG. It shows a state separated from the image carrier.

  In FIG. 9, 121 is a belt-shaped intermediate transfer member (image carrier), and 122 is a roller around which the intermediate transfer member is wound. The cleaning device 100 includes a cleaning blade 101 having one end fixed to a spring plate 103 that rotates around a rotation shaft 104 inside the box-shaped device main body 105, and one end fixed to the end of the device main body 105. A sealing material 102 is disposed.

  Normally, as shown in FIG. 9A, the cleaning blade 101 has a surface of the intermediate transfer member 121 that moves in the direction of arrow a by the free end of the blade being pressed against the intermediate transfer member 121 by the elastic force of the spring plate 103. The remaining toner is scraped off and stored in the box-shaped apparatus main body 105. Further, the free end of the sealing material 102 also comes into contact with the intermediate transfer member 121, and is scraped off to prevent the toner contained in the apparatus main body 105 from scattering. Reference numeral 108 denotes a screw that conveys the toner contained in the apparatus main body 105 to the outside.

  The cleaning blade 101 is pressed against the intermediate transfer member 121 during the image forming operation to clean the residual toner on the intermediate transfer member. However, the cleaning blade 101 enters a standby state while being in contact with the intermediate transfer member 121 even during the image forming operation. Wait for the start of the next image forming operation. This is because if the cleaning blade is separated from the intermediate transfer member (image carrier) during a period other than the image forming operation, the recovered toner may be scattered.

  However, if the waiting period is long when the cleaning blade is in pressure contact with the image carrier, the cleaning blade and the seal member disposed on the upstream side of the cleaning blade undergo creep deformation while being in pressure contact with the image carrier. In a high temperature environment, creep deformation occurs in a relatively short time, and even if the pressed state is released, the original shape is not restored. FIG. 9B shows a state in which the cleaning blade 101 is separated from the intermediate transfer member (image carrier) 121, and shows a state in which the cleaning blade 101 and the seal member 102 disposed on the upstream side are creep-deformed. Has been.

  As a countermeasure, a method has been proposed in which the cleaning blade is kept in pressure contact with the image carrier during periods other than the image forming operation, but the pressure contact force is reduced (see Patent Document 1).

In addition, when the image forming operation is not performed for a long time, the developing roller is separated (see Patent Document 2). When the image forming operation is not performed, the cleaning blade is separated from the image carrier, and the seal member is the image carrier. In order to prevent the scattering of toner by bringing it into contact with the toner, refer to Patent Document 3.
JP-A-5-127574. JP-A-2005-315946. Japanese Utility Model Publication No. 5-45742.

  As described above, if the standby period in a state where the cleaning blade is in pressure contact with the image carrier becomes long, the cleaning blade and the seal member disposed on the upstream side thereof are creep-deformed, and the pressure contact state is released. The original shape is not restored, and even the above-described conventional technique cannot prevent the cleaning blade or the seal member from being deformed by creep.

  SUMMARY OF THE INVENTION An object of the present invention is to provide an image forming apparatus including a cleaning device having a configuration that prevents creep deformation of a cleaning blade.

  SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, and the invention of claim 1 is directed to contact the surface of the image carrier to clean the toner remaining on the surface of the image carrier and to prevent the toner from scattering from the toner container. A cleaning device for an image forming apparatus having a sealing member for preventing the cleaning member, wherein the cleaning device is movable between a pressure contact position where the cleaning member is pressed against the surface of the image carrier and a separation position where the cleaning member is separated from the surface of the image carrier. And a pressing member that presses the cleaning member and the seal member from the back in the direction of the image carrier. The pressing member is opposite to the bending direction received at the press contact position when the cleaning member and the seal member are in the separated position. An image forming apparatus cleaning apparatus that corrects crepe deformation by pressing in a direction.

  The cleaning member is a cleaning blade or a cleaning brush.

  Further, the seal member is a seal member that is made of a film having one end held by a toner container and the other end formed at a free end, and seals the toner container.

  The cleaning device includes a configuration in which the cleaning member and the seal member are stopped at a standby position intermediate between the pressure contact position and the separation position, and the cleaning member and the seal member are at the separation position when stopped at the standby position. You may comprise so that the pressing force smaller than the pressing force pressed on the opposite side to the receiving bending direction may be received from the said pressing member.

  The cleaning device may adjust the pressing force with which the cleaning member presses against the surface of the image carrier when the cleaning member is in the pressing position according to external information.

  And when the said cleaning member exists in a separation position or a standby position, the said cleaning apparatus is good to adjust the pressing force pressed on the opposite side to the bending direction received from a pressing member according to external information.

  The external information is one or more pieces of information selected from the number of prints, environmental temperature and humidity, and the like.

  The pressing member is a member fixed to the housing of the cleaning device, and the cleaning member contacts the pressing member when moving to the separation position and is pressed to the opposite side to the bending direction received at the pressing position. It may be configured as follows.

  Further, the pressing member may be brought into pressure contact with the cleaning member by an elastic configuration.

  And when the said cleaning member moves to a separation position, the said seal member shall contact | abut the cleaning member or the member holding a cleaning member, and shall be pressed on the opposite side to the bending direction received in a press-contact position.

  The sealing member is a urethane film having a free end of 5 mm or more and a thickness of 200 μm or less.

  The sealing member may be reinforced by overlapping a resin material on the back surface.

  As described above, the present invention provides an image forming apparatus including a cleaning member that presses against the surface of the image carrier and cleans the toner remaining on the surface of the image carrier and a seal member that prevents toner from scattering from the toner container. A cleaning device for an apparatus, wherein the cleaning member or the seal member is creep-deformed by a pressing force received when the cleaning member or the seal member is in a press-contact position where it is pressed against the surface of the image carrier. Is moved to the separation position, and the cleaning member or the seal member is pressed in the direction opposite to the bending direction received at the pressure contact position to correct the creep deformation. Thereby, a cleaning member and a sealing member can be maintained in a favorable state for a long time.

  Hereinafter, an embodiment in which the present invention is applied to a four-cycle full-color image forming apparatus will be described.

  FIG. 1 is a diagram for explaining the configuration of a 4-cycle full-color image forming apparatus 10. Since the 4-cycle full-color image forming apparatus itself is a known configuration, only the outline of the configuration will be briefly described.

  In FIG. 1, reference numeral 11 denotes a photosensitive drum, around which a charging device 12, an exposure device 13 having a laser device, a primary transfer device 14 and a cleaning device 15 are arranged with an intermediate transfer belt 21 interposed therebetween.

  A developing device 16 having four color developing units 16Y, 16M, 16C, and 16K is disposed adjacent to the photosensitive drum 11. The developing unit 16Y is yellow, the developing unit 16M is magenta, and the developing unit 16C. Is charged with cyan toner, and the developing unit 16K is loaded with black toner, and the four-color developing units 16Y to 16K have the image latent image of the corresponding color at the developing position by the rotation of the photosensitive drum 11 in the direction of arrow a. The four color developing units 16Y to 16K are configured to move to the developing position in accordance with the movement timing.

  An intermediate transfer belt 21 is disposed in contact with the photosensitive drum 11, and the intermediate transfer belt 21 is installed between a driving roller 22, a driven roller 24, and intermediate rollers 23 and 25. A secondary transfer roller 26 is disposed with the transfer belt 21 interposed therebetween, and the recording paper P is supplied between the intermediate transfer belt 21 and the secondary transfer roller 26. A fixing device 27 is disposed. Further, a cleaning device 30 is disposed on the driven roller 24 with the intermediate transfer belt 21 interposed therebetween.

  The operation of the above configuration will be briefly described. An image signal output by scanning a document on a document table (not shown) with a scanner or an image signal output from a personal computer (not shown) on the surface of the photosensitive drum 11 uniformly charged by the action of the charging device 12. Input to the exposure apparatus 13. The exposure device 13 includes a laser device. First, laser light modulated by a yellow image signal is projected onto the surface of the photoconductor 11 to form a yellow image latent image. The yellow image latent image is developed with yellow toner of the developing unit 16Y, and the formed yellow toner image is transferred onto the intermediate transfer belt 21 by the action of the primary transfer device 14.

  Again, the surface of the photosensitive drum 11 is uniformly charged by the action of the charging device 12, and laser light modulated by a magenta image signal is projected from the exposure device 13 onto the surface of the photosensitive member 11 to form a magenta image latent image. Is done. The magenta image latent image is developed with the magenta toner of the developing unit 16M, and the formed magenta toner image is superimposed on the yellow toner image transferred on the intermediate transfer belt 21 by the action of the primary transfer device 14. Is transcribed.

  Thereafter, the above processing is sequentially repeated for cyan and black image signals, and yellow, magenta, cyan, and black toner images are superimposed and transferred onto the intermediate transfer belt 21 to form a full-color toner image.

  The recording paper P is supplied from a paper supply device (not shown) at the timing when the full color toner image formed on the intermediate transfer belt 21 reaches the position of the secondary transfer device 26, and the full color toner image is stored in the secondary transfer device 26. It is transferred onto the recording paper P by the action. Thereafter, the recording paper P is conveyed to the fixing device 27, subjected to a fixing process, and discharged.

  Untransferred toner remaining on the intermediate transfer belt 21 without being transferred is cleaned by a cleaning device 30 according to the present invention described below.

  Next, the cleaning device 30 according to the present invention will be described. The cleaning device includes a plurality of embodiments (40, 50) in addition to the cleaning device 30 of the first embodiment. Hereinafter, description will be made sequentially.

[First Embodiment of Cleaning Device]
FIG. 2 is a cross-sectional view illustrating the configuration of the cleaning device 30 according to the first embodiment. FIG. 2A illustrates a state where the cleaning blade is in a pressure contact position where the cleaning blade is in pressure contact with the intermediate transfer belt 21, and FIG. Indicates a state in which the cleaning blade is in a separated position separated from the intermediate transfer belt 21.

  The cleaning device 30 of the first embodiment includes a cleaning blade 31 having one end fixed to a mounting member 33 made of a spring material that rotates around a rotation shaft 34 inside a box-shaped device main body 39, and A seal member 32 having one end fixed to an extension of the attachment member 33 is arranged. In addition, the pressing member 35, which is a feature of the present invention, is disposed on the back surface of the cleaning blade 31 (on the side opposite to the intermediate transfer belt 21). Reference numeral 38 denotes a screw that conveys the toner contained in the apparatus main body 39 to the outside.

  Until the yellow, magenta, cyan, and black toner images are superimposed and transferred onto the intermediate transfer belt 21 to form a full color toner image, the cleaning blade 31 is set at the separation position shown in FIG. The cleaning blade 31 is not in contact with the intermediate transfer belt 21.

  In this state, the pressing member 35 contacts the back surface of the cleaning blade 31 and presses in a direction opposite to the bending direction received when the cleaning blade 31 is pressed by the intermediate transfer belt 21 to correct the creep deformation of the cleaning blade. To do.

  When the full-color toner image superimposed and transferred onto the intermediate transfer belt 21 is transferred onto the recording paper P, the cleaning blade 31 moves to the press contact position shown in FIG. 2A, and the cleaning blade 31 moves to the intermediate transfer belt 21. The toner remaining on the surface of the intermediate transfer belt 21 moving in the direction of arrow a is scraped off and accommodated in the box-shaped apparatus main body 39. Further, the free end of the seal member 32 also comes into contact with the intermediate transfer belt 21 to prevent the toner contained in the apparatus main body 39 that is scraped off and accommodated in the toner container from scattering.

  FIGS. 3A and 3B are diagrams illustrating the configuration of the pressing member 35. FIG. 3A is a front view of the pressing member 35, and FIG. 3B is a side view thereof. The pressing member 35 includes a contact member 35a that contacts the cleaning blade 31, a support member 35b, and a spring member 35c. The support member 35b is fixed to the side wall of the apparatus main body 39 and is disposed inside the support member 35b. The contact member 35a is pressed against the cleaning blade 31 by the spring member 35c.

  The front end portion 35a1 of the contact member 35a that contacts the cleaning blade 31 has a curved surface so as not to damage the cleaning blade, and the contact member 35a has a hardness such as metal so that the entire surface is not curved. It shall be composed of high materials. Further, the support member 35 b may be configured integrally with the side wall of the apparatus main body 39.

  4A and 4B are diagrams for explaining the configuration of the mounting member 33. FIG. 4A is a front view of the mounting member 33, and FIG. 4B is a side view thereof. The attachment member 33 made of a spring material is a U-shaped member as a whole, and a rotation shaft 34 is provided in a portion 33a corresponding to the U-shaped bottom side. 39 is held on the side wall. The attachment member 33 rotates around the rotation shaft 34 and is pressed against the intermediate transfer belt 21 by the cleaning blade 31 that is fixed (position shown in FIG. 2A). A known driving means (not shown) for moving between (position shown in FIG. 2B) is provided.

  In addition to fixing one end of the cleaning blade 31 to the mounting member 33, the left and right ends of the seal member 32 are fixed to the tip of the U-shaped left and right extension 33b.

[Second Embodiment of Cleaning Device]
FIG. 5 is a cross-sectional view for explaining the configuration of the cleaning device 40 according to the second embodiment. FIG. 5A shows a state where the cleaning blade is in a pressure contact position where it comes into pressure contact with the intermediate transfer belt, and FIG. A state in which the cleaning blade is in a separated position separated from the intermediate transfer belt is shown.

  The same members as those of the cleaning device 30 of the first embodiment described above are denoted by the same reference numerals, description thereof is omitted, and differences will be described.

  In the cleaning device 40 of the second embodiment, a second seal member 41 is disposed on the downstream side of the cleaning blade 31 of the cleaning device 30 of the first embodiment. Omitted. When the attachment member 33 is rotated around the rotation shaft 34 and the cleaning blade 31 is set at a separation position (FIG. 5B) separated from the intermediate transfer belt 21, a seal that fixes the second seal member 41 is secured. The mounting member 42 contacts the end of the mounting member 33 and also contacts the push-up member 37 provided on the mounting member 33 to warp the second seal member 41 in the reverse direction toward the intermediate transfer belt 21.

  With this configuration, the creep deformation of the second seal member 41 can be corrected. Note that the creep deformation can be effectively corrected by applying a displacement amount in the reverse direction larger than the pressing force with which the cleaning blade 31 presses against the intermediate transfer belt 21.

  The push-up member that pushes up the seal member in the reverse direction is hardly stressed and therefore does not require any particular strength. A push-up member 37 may be provided on the cleaning blade 31. In addition, when the dedicated attachment member 42 to which the second seal member 41 is fixed is provided, the angle of the second seal member 41 that presses against the intermediate transfer belt 21 can be freely adjusted. Depending on the setting of the angle, the free end of the second seal member 41 may bite into the cleaning blade 31 and the push-up member 37 may not be required.

[Third embodiment of cleaning device]
6A and 6B are cross-sectional views illustrating the configuration of the cleaning device 50 according to the third embodiment. FIG. 6A illustrates a state where the cleaning blade is in a pressure contact position where the cleaning blade is in pressure contact with the intermediate transfer belt, and FIG. A state in which the cleaning blade is in a separated position separated from the intermediate transfer belt is shown.

  The cleaning device 50 of the third embodiment is obtained by adding the configuration of the cleaning device 40 of the second embodiment to the configuration of the cleaning device 30 of the first embodiment. A configuration for correcting the creep deformation of the second seal member 41 of the cleaning device 40 of the second embodiment is added to the configuration including the pressing member 35. Since the configurations of the first and second embodiments have already been described, the description of the cleaning device 50 of the third embodiment that combines them will be omitted.

[Fourth Embodiment of Cleaning Device]
The fourth embodiment of the cleaning apparatus relates to the configuration of the cleaning apparatus when stored for a long time without using the image forming apparatus. FIG. 7 is a cross-sectional view illustrating the configuration of the cleaning device 60 according to the fourth embodiment, which is basically the same as the cleaning device 50 according to the third embodiment described above, and thus detailed description of the configuration is omitted. However, the fourth embodiment has a configuration in which the pressure contact force that the cleaning blade presses against the intermediate transfer belt is released.

  That is, the pressing member 35 is rotated around the rotation shaft 34 by a known driving means (not shown), and the pressure contact position (the position shown in FIG. 2A) where the cleaning blade 31 is pressed against the intermediate transfer belt 21. In the configuration of moving between the separation positions (positions shown in FIG. 2B), the pressing member 35 is stopped at the intermediate position between the pressure contact position and the separation position, that is, the standby position, and the cleaning blade 31 and the second seal member 41 is made not to contact an intermediate transfer belt.

  As a means for stopping at the intermediate position (standby position), a known appropriate means for stopping at the intermediate position can be adopted as a known driving means for rotating the pressing member 35 around the rotation shaft 34. In addition, the entire cleaning device 60 may be moved away from the intermediate transfer belt 21, and the cleaning blade 31 may be separated from the position where it is pressed against the intermediate transfer belt 21.

  By keeping the cooling blade and the second seal member away from the intermediate transfer belt and preventing them from coming into contact, creeping deformation of the cooling blade and the second seal member is prevented even during long-term storage. can do.

  FIG. 8 is a view for explaining an example of a separation mechanism that separates the entire cleaning device from the intermediate transfer belt 21. FIG. 8A is a state in which the cooling blade 31 of the cleaning device is in a pressure contact position where the cleaning device 31 is pressed against the intermediate transfer belt 21. FIG. 8B is a side view illustrating the separation mechanism in FIG. FIG. 8C is a front view for explaining a state in the middle of moving from the pressure contact position to the separation position, FIG. 8D is a side view thereof, and FIG. 8E is a state of movement to the separation position. A front view and FIG. 8 (f) are side views thereof.

  8A to 8F, reference numeral 71 denotes a drive cam, 72a denotes a front end of a separation lever, 72b denotes a rear end of the separation lever, 73 denotes a cleaning device, and 73p denotes a rotation center of the cleaning device.

  When the cleaning device 73 is in the pressure contact position shown in FIGS. 8A and 8B, the drive cam 71 is not in contact with the rear end 72b of the separation lever, and the receiving portion 73a provided with the housing of the cleaning device 73. Is in contact with the distal end 72a of the separating lever, but the cleaning device 73 is not moved.

  When the drive cam 71 rotates in the direction of arrow c in this state, the rear end 72b of the separation lever is pushed in the direction of arrow c, and the distal end 72a of the separation lever pushes the housing receiving portion 73a in the direction of arrow d to rotate the cleaning device 73. It is rotated around the center 73p and moved to the separation position shown in FIGS. 8 (e) and 8 (f) through the intermediate state of movement shown in FIGS. 8 (c) and 8 (d). By the rotation of the cleaning device 73, the cooling blade 31 is also moved from the pressure contact position where it is in pressure contact with the intermediate transfer belt 21 to the separation position.

  By stopping the rotation of the drive cam 71 at an intermediate position in the middle, that is, at the standby position, it is possible to release the pressure contact force that the cleaning blade described in the fourth embodiment presses against the intermediate transfer belt. By adjusting the rotation angle of the drive cam 71, the separation amount of the cooling blade can also be adjusted.

  As described above, the embodiment of the present invention has been described in a configuration in which an intermediate transfer belt is used as an image carrier, and a cooling blade is used as a cleaning member for cleaning the surface of the intermediate transfer belt. However, the present invention is not limited to this, and a photosensitive drum or other configuration may be used. Further, the cleaning member is not limited to the cooling blade, and may be a scraper, a brush, or the like.

  The seal member may be a film-like material that does not damage the image carrier. For example, a urethane sheet or the like having a thickness of 200 μm or less and a length to the free end of about 5 mm is difficult to creep. In addition, it is possible to make creep deformation more difficult by backing with a PPS film or the like.

  The pressing force with which the cleaning blade presses against the intermediate transfer belt may be changed in accordance with environmental conditions such as the number of prints and temperature and humidity. For example, if the number of prints increases, the wear of the cleaning blade also progresses and the pressure contact force decreases, so that the reverse pressing force and displacement amount may be increased as the number of prints increases.

  Similarly, since the cleaning blade is likely to remain unwiped in a low temperature environment, it is better to increase the pressing force and displacement amount in the opposite direction to strongly correct the pressure and increase the blade pressure contact force. On the other hand, in a high temperature environment, the cleaning blade wears faster, so it is better to reduce the reverse pressing force and displacement.

  A cleaning device for an image forming apparatus capable of correcting a creep deformation received by a cleaning blade or a seal member pressed against an image carrier by cleaning a transfer residual toner on a surface of an image carrier of the image forming apparatus.

1 is a diagram illustrating a configuration of a four-cycle full-color image forming apparatus. FIG. Sectional drawing explaining the structure of the cleaning apparatus of 1st Example. The figure explaining the structure of a press member The figure explaining the structure of an attachment member Sectional drawing explaining the structure of the cleaning apparatus of 2nd Example. Sectional drawing explaining the structure of the cleaning apparatus of 3rd Example. Sectional drawing explaining the structure of the cleaning apparatus of 4th Example. FIG. 4 is a diagram illustrating a separation mechanism that separates the entire cleaning device from an intermediate transfer belt. Sectional drawing explaining the structure of the conventional cleaning apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Full-color image forming apparatus 11 Photosensitive drum 12 Charging apparatus 13 Exposure apparatus 14 Primary transfer apparatus 15 Cleaning apparatus 16 Developing apparatus 16Y, 16M, 16C, 16K Developing unit 21 Intermediate transfer belt 22 Drive roller 23, 25 Intermediate roller 24 Drive roller 26 Secondary transfer roller 27 Fixing device 30 Cleaning device (cleaning device of the first embodiment)
31 Cleaning Blade 32 Sealing Member 33 Mounting Member 34 Rotating Shaft 35 Pressing Member 35a Contacting Member 35b Supporting Member 35c Spring Member 37 Push-up Member 38 Conveying Screw 39 Device Main Body 40 Second Embodiment Cleaning Device 41 Second Sealing Member 42 Seal Mounting member 50 Cleaning device of the third embodiment 60 Cleaning device of the fourth embodiment 71 Driving cam 72 Separation lever 72a Tip of the separation lever 73 Cleaning device 73a Housing receiving portion 73p Cleaning device rotation center

Claims (12)

A cleaning device for an image forming apparatus, comprising: a cleaning member that presses against the surface of the image carrier and cleans toner remaining on the surface of the image carrier; and a seal member that prevents toner from scattering from the toner container.
The cleaning device is configured to be movable between a pressure contact position where the cleaning member is pressed against the surface of the image carrier and a separation position separated from the surface of the image carrier, and the cleaning member and the seal member are moved in the direction of the image carrier from the back side. A pressing member for pressing,
The image forming apparatus cleaning device according to claim 1, wherein when the cleaning member and the seal member are in a separated position, the pressing member is pressed in a direction opposite to a bending direction received at the press contact position to correct crepe deformation. The image forming apparatus cleaning apparatus according to claim 1, wherein the cleaning member is a cleaning blade or a cleaning brush. The image forming apparatus according to claim 1, wherein the seal member is a seal member that is made of a film having one end held by a toner container and the other end formed at a free end, and seals the toner container. Equipment cleaning device. The cleaning device includes a configuration in which the cleaning member and the seal member are stopped at a standby position intermediate between the pressure contact position and the separation position, and the cleaning member and the seal member are bent at the separation position when stopped at the standby position. The image forming apparatus cleaning apparatus according to claim 1, wherein the pressing member receives a pressing force smaller than a pressing force pressing in a direction opposite to the direction from the pressing member. 2. The image according to claim 1, wherein when the cleaning member is in a press-contact position, the cleaning device can adjust a press-contact force with which the cleaning member presses against the surface of the image carrier in accordance with external information. A forming device cleaning device. The cleaning device is capable of adjusting a pressing force for pressing in a direction opposite to a bending direction received from a pressing member according to external information when the cleaning member is at a separation position or a standby position. 2. A cleaning device for an image forming apparatus according to 1. 7. The image forming apparatus cleaning apparatus according to claim 5, wherein the external information is one or more pieces of information selected from the number of prints, environmental temperature and humidity, and the like. The pressing member is a member fixed to the housing of the cleaning device, and the cleaning member is pressed against the bending direction received at the pressing position by contacting the pressing member when moving to the separation position. The image forming apparatus cleaning apparatus according to claim 1, wherein the image forming apparatus is a cleaning apparatus. The image forming apparatus cleaning apparatus according to claim 1, wherein the pressing member is pressed against the cleaning member by an elastic configuration. The seal member is pressed to a side opposite to a bending direction received at the press contact position by contacting the cleaning member or a member holding the cleaning member when the cleaning member moves to a separation position. Item 4. A cleaning device for an image forming apparatus according to Item 1. The cleaning device for an image forming apparatus according to claim 3, wherein the seal member is a urethane film having a free end of 5 mm or more and a thickness of 200 μm or less. The image forming apparatus cleaning apparatus according to claim 3, wherein the sealing member is reinforced by overlapping a resin material on a back surface.

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