JP5265466B2 - Cleaning device, image forming device - Google Patents

Description

  The present invention belongs to a technical field of an image forming apparatus such as a printer, a copier, or a multifunction machine, and particularly relates to a cleaning technique for removing deposits such as toner remaining on an image carrier.

  In an electrophotographic image forming apparatus such as a copying machine or a printer, a photosensitive drum is widely used as an image carrier. In the image forming apparatus using the photosensitive drum, the peripheral surface of the photosensitive drum is uniformly charged to a predetermined potential by a charging device, and an LED of an exposure device is applied to the peripheral surface of the photosensitive drum based on image data. By irradiating light or the like, the potential is partially attenuated to form an electrostatic latent image corresponding to the original image, and this electrostatic latent image is developed by a developing device, so that the peripheral surface of the photosensitive drum is developed. A toner image is formed, and the toner image is transferred to the sheet when the sheet passes through a transfer region formed by bringing the photosensitive drum and the transfer member into contact with or in close proximity to each other. .

  In this type of image forming apparatus, after a toner image is transferred to a sheet, some toner may remain on the peripheral surface of the photosensitive drum without being transferred to the sheet. The residual toner adhering to the peripheral surface of the photosensitive drum becomes an obstacle to the next new image formation, and therefore the photosensitive drum needs to be cleaned. The cleaning method used here includes, for example, a method in which a rotating member such as a cleaning roller or a rotating brush is pressed against the peripheral surface of the photosensitive drum to move and collect residual toner on the rotating member, or a photosensitive member. A method of scraping residual toner by bringing a cleaning blade into contact with the peripheral surface of the drum, or a cleaning method combining these methods is widely known.

  On the other hand, when an amorphous silicon photoconductor is used as the photoconductor, discharge products generated by the discharge of the charging device are likely to adhere to the peripheral surface. If this discharge product absorbs moisture, the electrical resistance of the peripheral surface of the photoreceptor may be reduced, causing a problem of image flow that disturbs the electrostatic latent image. For this reason, a method is known in which a small amount of abrasive is added to the toner, the toner is carried on the peripheral surface of the cleaning roller, and the discharge product adhering to the peripheral surface of the photosensitive member is polished by this toner to be cleaned. It has been.

  The following Patent Documents 1 and 2 disclose techniques relating to cleaning of a photosensitive drum.

  In Patent Document 1 below, a polishing mode is provided in which the polishing roller is disposed upstream and above the rotation direction of the image carrier relative to the cleaning blade, and the rotation direction of the polishing roller is used to polish the surface of the image carrier. In this case, the rotation direction of the image carrier is set in the same direction as the rotation direction of the image carrier, so that the nip outlet between the polishing roller and the photosensitive drum is positioned above the nip portion to form a toner reservoir there. It has been proposed that the surface of the photosensitive drum is polished using a toner that is present and that the rotation direction of the image carrier is different from that in a mode other than the polishing mode.

  In Patent Document 2 below, the rubbing roller and the photosensitive drum are rotated in the same direction at the rubbing portion, and the rotation speed of the rubbing roller at the time of image formation is set larger than the rotation speed of the photosensitive drum. A technique is disclosed in which the rotational speed of the rubbing roller during image formation is set larger than the rotational speed of the rubbing roller during image formation.

JP 2008-146034 A JP 2005-345505 A

  In the image forming apparatus according to Patent Document 1, when the rotation direction of the polishing roller in a mode other than the polishing mode is simply different from the rotation direction of the image carrier, the toner in the toner pool is discharged from the nip outlet to the outside. Therefore, there is a concern that the toner in the toner reservoir becomes very small, and the toner necessary for cleaning disappears. In order to compensate for the shortage of toner, it is conceivable to supply toner from the developing unit, but this causes an increase in toner consumption.

  In the image forming apparatus according to Patent Document 2, the rotational speed of the rubbing roller during image formation is set to be larger than the rotational speed of the photosensitive drum. However, in this case, the photosensitive drum is driven by the rotation of the rubbing roller, and the rotational speed of the photosensitive drum becomes unstable. As a result, there is a possibility that image noise (jitter noise) having a horizontal stripe pattern occurs in the image transferred to the transfer material.

  The present invention has been made in view of such circumstances, and provides a cleaning device and an image forming apparatus that perform a cleaning operation capable of preventing or suppressing occurrence of jitter noise while suppressing toner consumption. With the goal.

  According to a first aspect of the present invention, there is provided a cleaning blade that removes toner adhering to the peripheral surface from the peripheral surface by contacting the peripheral surface of the image bearing drum, and a peripheral surface of the image bearing drum by the cleaning blade. A toner receiving member that forms a toner storing portion that receives and stores the toner removed from the toner cartridge at a predetermined position, and a peripheral surface that is in sliding contact with the peripheral surface of the image bearing drum, and is in sliding contact with the peripheral surface of the image supporting drum. A cleaning roller having a peripheral surface in contact with the toner in the toner storage portion and carrying the toner, and the image carrier drum in which the peripheral surface of the cleaning roller is in contact with the image carrier drum from top to bottom A roller controller that rotates the cleaning roller so as to move in the same direction as the peripheral surface of the toner. The peripheral surface of the cleaning roller faces the toner receiving member. The roller control unit moves the toner stored in the toner storage unit in a direction of scooping up from below, and the roller control unit performs an image forming period in which the toner image is formed on the image bearing drum, The moving speed of the peripheral surface is set slower than the moving speed of the peripheral surface of the image carrier drum, and the moving speed of the peripheral surface of the cleaning roller during the non-image forming period other than the image forming period is set during the image formation. The cleaning device is set to a speed higher than the moving speed of the peripheral surface of the cleaning roller.

  According to the present invention, the toner receiving member is provided, the toner removed from the peripheral surface of the image bearing drum by the cleaning blade is received and stored at a predetermined position, and the stored toner is used as a cleaning toner. Since it is carried on the peripheral surface, the image carrying drum can be cleaned (the removal operation) during the image forming period without requiring new toner each time cleaning is performed.

  In addition, during the image formation period, the moving speed of the peripheral surface of the cleaning roller is set slower than the moving speed of the peripheral surface of the image carrier drum, so that generation of image noise (jitter noise) is prevented. Can do.

  Further, since the moving speed of the peripheral surface of the cleaning roller is set to a speed larger than the moving speed of the peripheral surface of the cleaning roller during the image formation during the non-image forming period, the image bearing drum and the cleaning roller The distribution in the axial direction of the toner at the contact portion can be made uniform.

  That is, when an image forming operation is performed, the image is formed as in the case where the position of the image to be formed on the peripheral surface of the image bearing drum is concentrated on one end side in the axial direction. Depending on the form of the power image, the distribution of the toner sandwiched between the cleaning roller and the image bearing drum at these contact portions may not be uniform in the axial direction.

  Therefore, as in the present invention, the peripheral surface of the cleaning roller is moved in the same direction as the peripheral surface of the image carrier drum from the top to the bottom at the contact portion with the image carrier drum, and the toner At a position facing the receiving member, the toner stored in the toner storage section is moved in the direction of scooping up from below, so that the toner pool is formed above the contact portion between the cleaning roller and the image bearing drum. In the non-image formation period, the moving speed of the peripheral surface of the cleaning roller is set to be higher than the moving speed of the peripheral surface of the cleaning roller during the image formation. The toner accumulated in the contact portion is quickly and uniformly dispersed in the axial direction by sliding contact with the carrier drum. It can be made uniform in the axial direction of the distributions. As a result, the peripheral surface of the image bearing drum can be uniformly cleaned in the axial direction during the next image formation.

The invention according to claim 2, in the cleaning device according to claim 1, wherein the roller control unit, the non-image forming period, the moving speed of the peripheral surface of the cleaning roller, when temporarily before Symbol image forming Is set to a speed larger than the moving speed of the peripheral surface of the cleaning roller in step S1, and then returned to the moving speed of the peripheral surface of the cleaning roller at the time of image formation .

  When the moving speed of the peripheral surface of the cleaning roller is set to be higher than the moving speed of the peripheral surface of the cleaning roller at the time of image formation, particularly when the moving speed of the peripheral surface of the cleaning roller is increased. The speed difference (absolute value) between the moving speed of the peripheral surface of the carrying drum and the moving speed of the peripheral surface of the cleaning roller before the speed of movement of the peripheral surface of the cleaning roller is increased. When the speed difference (absolute value) from the moving speed is larger, it is conceivable that the amount of heat generated by friction at the contact portion between the cleaning roller and the image bearing drum increases.

  Accordingly, in the present invention, since the movement speed is temporarily switched, an increase in the amount of heat generated at the contact portion between the cleaning roller and the image bearing drum can be prevented or suppressed.

  As the toner receiving member, as in the third aspect of the present invention, the toner receiving member is installed from a peripheral surface of the cleaning roller to a radially outer side in a section of the roller via a predetermined gap, and the image is formed by the cleaning blade. It is assumed that the toner removed from the carrying drum is stored.

  According to a fourth aspect of the present invention, there is provided image data for the image bearing drum, a charging unit that uniformly charges the circumferential surface of the image bearing drum, and the circumferential surface of the image bearing drum after the charging operation by the charging unit. An exposure unit that forms an electrostatic latent image by performing an exposure operation based on the image, a developing unit that visualizes the electrostatic latent image formed on the peripheral surface of the image carrying drum with toner, and a peripheral portion of the image carrying drum. 4. A transfer unit that transfers a toner image formed on a surface to a predetermined recording medium, and an adhering material that adheres to a peripheral surface of the image carrying drum after the transfer by the transfer unit. An image forming apparatus comprising the cleaning device according to claim 1.

  According to this invention, in the image forming apparatus, the effect of the invention according to any one of claims 1 to 3 can be obtained.

  According to the present invention, uniform cleaning can be performed in the axial direction while preventing or suppressing toner consumption and occurrence of jitter noise.

1 is a diagram schematically showing an internal configuration of an embodiment of an image forming apparatus according to the present invention. It is a figure which shows the structure of a cleaning unit. 1 is a block diagram illustrating an electrical configuration of an image forming apparatus according to an exemplary embodiment. FIG. 6 is a diagram illustrating a state where a toner reservoir is formed above the contact portion between the photosensitive drum and the cleaning roller. It is a flowchart which shows the process of a control part.

  Hereinafter, an embodiment of an image forming apparatus including a cleaning device according to the present invention will be described with reference to the drawings. FIG. 1 is a front view showing an example of an image forming apparatus according to the present invention.

  As shown in FIG. 1, the image forming apparatus 1 has a cylindrical photosensitive drum 2 whose peripheral surface is made of amorphous silicon as an image bearing drum. 3), a developing device (corresponding to the developing unit) 4, a transfer roller (corresponding to the transferring unit) 5 as an example of a transfer body, a cleaning unit 6, and a static eliminator 7 are arranged along the rotation direction of the photosensitive drum 2. Has been. The developing device 4 holds toner. The toner has a configuration in which an abrasive such as silica, alumina, zirconia, titania or the like is attached to the peripheral surface of the binder resin as mother particles. In addition to the binder resin, the toner contains, for example, about 30% pigment, wax, charge control agent, and the like.

  The image forming operation by the image forming apparatus 1 is performed as follows. After the peripheral surface of the photosensitive drum 2 is uniformly charged to a predetermined potential by the charger 3, exposure is performed by irradiating the peripheral surface of the photosensitive drum 2 with laser light 9 according to image data by an unillustrated exposure unit. As a result, an electrostatic latent image is formed on the photosensitive drum 2. Thereafter, the electrostatic latent image on the photosensitive drum 2 is developed by the developing device 4 into a toner image, and the toner image on the photosensitive drum 2 is transferred to a transfer material, for example, a recording paper 12 by the transfer roller 5. . At the time of this transfer, a transfer bias electric field is applied between the photosensitive drum 2 and the transfer roller 5 so that the charged toner is smoothly moved to the recording paper 12 as a recording medium. The recording medium includes a member that temporarily holds a toner image, such as an intermediate transfer member.

  The toner remaining on the photosensitive drum 2 after the transfer is removed by the cleaning unit 6. Thereafter, the residual potential on the photosensitive drum 2 is erased by the static eliminator 7. Then, it is charged again by the charger 3, and the above image forming process is repeated.

  On the other hand, the recording paper 12 is unwound from the paper cassette 13 and conveyed along the conveying line 14 and is sent between the photosensitive drum 2 and the transfer roller 5. The toner image is transferred, and then discharged to the discharge tray 16 through the fixing unit 15. A registration roller pair 17 is provided on the upstream side of the transfer roller 5 in the transport line 14. The registration paper pair 17 abuts against the registration roller pair 17 and is temporarily stopped to form an image on the photosensitive drum 2. In synchronization with the timing, the registration roller pair 17 is driven to feed the recording paper P toward the transfer nip between the photosensitive drum 2 and the transfer roller 5.

  In the image forming apparatus 1 configured as described above, the transfer roller 5 is disposed above the photosensitive drum 2, and the conveyance line 14 is provided so as to pass between the photosensitive drum 2 and the transfer roller 5. ing. A cleaning unit 6 is provided below the transport line 14 and downstream of the transfer roller 5 in the rotation direction of the photosensitive drum 2.

  FIG. 2 is an enlarged view showing the configuration of the cleaning unit 6.

  The cleaning unit 6 includes a cleaning roller 10, a cleaning blade 11 disposed below the cleaning roller 10, that is, a downstream side in the rotation direction of the photosensitive drum 2 when viewed from the cleaning roller 10, and the vicinity of the cleaning roller 10. A plate roll 12 (corresponding to a toner receiving member).

  The cleaning roller 10 has a cylindrical shape, and its peripheral surface slides (contacts) with the peripheral surface of the photosensitive drum 2 with a rotational axis Q parallel to the rotational axis O of the photosensitive drum 2 as a rotation center. It will rotate. The cleaning roller 10 is driven by a drive motor 20 (see FIG. 1). The drive motor 20 is controlled by a roller control unit 21 (see FIG. 3) described later.

  The cleaning roller 10 is made of foamed rubber, for example, and has fine irregularities on the peripheral surface. The toner adheres to the peripheral surface of the cleaning roller 10 due to the unevenness.

  The cleaning blade 11 contacts the circumferential surface of the photosensitive drum 2 at a predetermined position below the cleaning roller 10 (a position downstream in the rotation direction of the photosensitive drum 2), and toner (from the circumferential surface of the photosensitive drum 2) Residual toner) is scraped off.

  The plate roll 12 is a member for forming a toner storage space (an example of a storage unit) scraped by the cleaning blade 11. That is, the plate roll 12 has a curved surface that is curved along the peripheral surface of the cleaning roller 10 on the radially outer side in the cross section of the cleaning roller 10 and on the opposite side of the photosensitive drum 2 with respect to the cleaning roller 10. The space surrounded by the plate roll 12, the cleaning roller 10 and the peripheral surface of the photosensitive drum 2 and the cleaning blade 11 is formed as the storage space.

  When the radius of the photosensitive drum 2 is set in the range of 20 mm to 50 mm, for example, and the radius of the cleaning roller 10 is set in the range of 10 mm to 30 mm, for example, the separation between the plate roll 12 and the cleaning roller 10 is performed. The distance is set in the range of 1 mm to 3 mm, for example.

  In the cleaning unit 6, the electrostatic latent image supplied from the developing device 4 and formed on the peripheral surface of the photosensitive drum 2 is converted into a toner image by the developing device 4, and this toner image is transferred to the recording paper P. The toner remaining on the peripheral surface of the photosensitive drum 2 without being transferred to the recording paper P is scraped off by the cleaning blade 11. The scraped toner is stored in the storage space. When the toner stored in the storage space reaches the position of the peripheral surface of the cleaning roller 10, the cleaning roller 10 carries the toner on the peripheral surface.

  The plate roll 12 has an upper end at a contact portion (hereinafter referred to as a nip portion) between the cleaning roller 10 and the photosensitive drum 2 in order to make the toner stored in the storage space easily adhere to the peripheral surface of the cleaning roller 10. It is preferable that it is configured to extend to a height position equivalent to or higher than that. Here, the height refers to a height in a direction perpendicular to the ground.

  FIG. 3 is a block diagram showing an example of the electrical configuration of the image forming apparatus 11 shown in FIG. As shown in FIG. 3, the image forming apparatus 1 includes an input operation unit 18 and a control in addition to the photosensitive drum 2, the charger 3, the developing device 4, the transfer roller 5, the cleaning unit 6, and the static eliminator 7. Part 21.

  Although not described in detail, the input operation unit 18 is a numeric key for inputting the number of prints, a start button for starting a print operation, a stop for the print operation, and a stop for canceling the input operation. / Clear button, a reset button for setting various settings to an initial state or a standard operation state, and the like.

  The control unit 21 includes, for example, a CPU (Central Processing Unit) that executes predetermined arithmetic processing, a ROM (Read Only Memory) that stores a predetermined control program, and a RAM (Random Access Memory) that temporarily stores data. The above-described photosensitive drum 2, charger 3, developing device 4, transfer roller 5, cleaning unit 6 and static eliminator 7 are connected to the control unit 21.

  The control unit 21 in this embodiment functions as a drum control unit 22 and a roller control unit 23.

  The drum control unit 22 controls the rotation operation of the photosensitive drum 2. In this embodiment, when the image forming operation is performed by the image forming apparatus 1, the photosensitive drum 2 is rotated in advance. When the image forming apparatus 1 does not perform the image forming operation, the rotating operation of the photosensitive drum 2 is stopped. The moving speed of the peripheral surfaces of the photosensitive drum 2 and the cleaning roller 10 is referred to as a peripheral speed. The peripheral speed of the photosensitive drum 2 at the time of image formation is set, for example, in the range of 75 mm / second to 500 mm / second.

  The roller control unit 23 controls the rotation operation of the cleaning roller 10 and rotates the cleaning roller 10 in the direction opposite to the rotation direction of the photosensitive drum 2 as indicated by an arrow B in FIG. The cleaning roller 10 is rotated in a direction that moves in the same direction as the peripheral surface of the photosensitive drum 2 at a contact portion between the peripheral surface of the photosensitive drum 10 and the peripheral surface of the photosensitive drum 2). That is, the drum control unit 22 and the roller control unit 23 are arranged so that the peripheral surface of the photosensitive drum 2 and the peripheral surface of the cleaning roller 10 move from the top to the bottom at the contact portions thereof. 10 is rotated.

  At this time, the cleaning roller 10 scoops up the toner stored in the storage space and supplies this toner as a cleaning toner to the contact portion between the photosensitive drum 2 and the cleaning roller 10.

  In this embodiment, the roller control unit 23 changes the moving speed of the peripheral surface of the cleaning roller 10 depending on whether the image forming process is performed or not.

  That is, the roller control unit 23 always sets the peripheral speed of the cleaning roller 10 to a speed slower than the peripheral speed of the photosensitive drum 2, for example, 0.95 times the peripheral speed of the photosensitive drum 2 during the image forming period. Set the speed to As a result, the cleaning roller 10 operates to remove the adhering matter adhering to the peripheral surface of the photosensitive drum 2 using the toner carried in the storage space and supplied to the contact portion with the photosensitive drum 2 as an abrasive. Do. At this time, since the peripheral speed of the cleaning roller 10 is set slower than the peripheral speed of the photosensitive drum 2, the occurrence of image noise (jitter noise) can be prevented.

  On the other hand, in the non-image forming period, the roller control unit 23 temporarily sets the peripheral speed of the cleaning roller 10 during the image formation only while the cleaning roller 10 rotates only a few times (for example, two times). Is set to be higher than the peripheral speed of the cleaning roller 10 (however, it is not set to coincide with the peripheral speed of the photosensitive drum 2). As a result, the axial distribution of toner at the contact portion between the photosensitive drum 2 and the cleaning roller 10 can be made uniform.

  That is, when a certain image forming operation is performed, for example, the position of the image to be formed on the peripheral surface of the photosensitive drum 2 is concentrated on one end side in the axial direction. Depending on the form of the image to be obtained, the distribution of the toner sandwiched between the cleaning roller 10 and the photosensitive drum 2 at these contact portions may not be uniform in the axial direction.

  Therefore, in this embodiment, the peripheral speed of the cleaning roller 10 is set to a speed larger than the peripheral speed of the cleaning roller 10 in the image forming period during the non-image forming period. As a result, the amount of toner supplied to the contact portion per unit time by the cleaning roller 10 becomes larger than that during the image forming period, and as shown by an arrow X in FIG. 4, the cleaning roller 10 and the photosensitive drum 2 Toner accumulates at the top of the contact area. Here, due to the sliding contact between the cleaning roller 10 and the photosensitive drum 2, the accumulated toner is quickly and uniformly dispersed in the axial direction. Thereby, the toner distribution at the contact portion can be made uniform in the axial direction. As a result, the peripheral surface of the photosensitive drum 2 can be uniformly cleaned in the axial direction during the next image formation.

  FIG. 5 is a flowchart showing processing by the control unit 21.

  As shown in FIG. 5, when an instruction for an image forming operation is given by the input operation unit 18 (YES in step # 1), the drum control unit 22 moves the photosensitive drum 2 in a predetermined direction (arrow A in FIG. 2). The cleaning roller 10 is rotated forward (rotated in the direction opposite to the rotational direction of the photosensitive drum 2) at a rotational speed slower than the rotational speed of the photosensitive drum 2 (step # 2). Thereby, it is possible to remove discharge products generated by the discharge of the charger 3 and attached to the surface of the photosensitive drum 2.

  The roller control unit 23 performs the process of step # 2 until the image forming operation is completed (NO in step # 3), and when the image forming operation is completed and the image forming period ends (YES in step # 3). The rotational speed of the cleaning roller 10 is increased to a predetermined speed and rotated (step # 4).

  Next, the roller control unit 23 determines whether or not the cleaning roller 10 has rotated, for example, twice in this state (step # 5), and if it determines that the cleaning roller 10 has not rotated twice ( If NO in step # 5), the process returns to step # 4. If it is determined that the cleaning roller 10 has rotated twice (YES in step # 5), the rotational speed of the cleaning roller 10 is set in step # 2. Returning to the rotational speed, the cleaning roller 10 is rotated (step # 6).

  As described above, in this embodiment, the plate roll 12 is provided, and the toner remaining on the peripheral surface of the photosensitive drum 2 without being transferred or the toner remaining in the developing device 4 without being used for the image forming operation is used as unnecessary toner. The toner discharged onto the photosensitive drum 2 is scraped off by the cleaning blade 11, and the scraped toner is received and collected by the plate roll 12, so that a new toner is not required every time cleaning is performed. The photosensitive drum 2 can be cleaned (the removal operation) during the image forming period.

  Further, since the peripheral speed of the cleaning roller 10 is set slower than the peripheral speed of the photosensitive drum 10 during the image forming period, it is possible to prevent the occurrence of image noise (jitter noise).

  In the non-image forming period, the peripheral speed of the cleaning roller 10 is temporarily set to be higher than the peripheral speed of the cleaning roller 10 at the time of image formation. The toner reservoir can be formed on the upper part of the contact area with the toner 10, and the sliding contact between the cleaning roller 10 and the photosensitive drum 2 can make the toner axial distribution uniform at the contact area. The peripheral surface of the body drum 2 can be cleaned uniformly in the axial direction.

DESCRIPTION OF SYMBOLS 1 Image forming apparatus 2 Photoconductor drum 3 Charger 4 Developing apparatus 5 Transfer roller 6 Cleaning unit 7 Static eliminator 10 Cleaning roller 11 Cleaning blade 12 Plate roll 18 Input operation part 21 Control part 22 Drum control part 23 Roller control part

Claims (4)

A cleaning blade for removing toner adhering to the peripheral surface from the peripheral surface by contacting the peripheral surface of the image bearing drum;
A toner receiving member that forms a toner storage portion that receives and stores toner removed from the peripheral surface of the image bearing drum at a predetermined position by the cleaning blade;
A cleaning roller having a peripheral surface slidably contacting the peripheral surface of the image bearing drum, and a peripheral surface slidably contacting the peripheral surface of the image bearing drum contacting the toner of the toner storage unit and supporting the toner;
A roller controller that rotates the cleaning roller so that the circumferential surface of the cleaning roller moves in the same direction as the circumferential surface of the image carrier drum from the top to the bottom at the contact portion with the image carrier drum; Prepared,
The peripheral surface of the cleaning roller moves in a direction to scoop up the toner stored in the toner storage portion from below at a position facing the toner receiving member,
The roller control unit
An image forming period in which a toner image is formed on the image bearing drum, a moving speed of the peripheral surface of the cleaning roller is set slower than a moving speed of the peripheral surface of the image carrier drum,
A cleaning device that sets a moving speed of the peripheral surface of the cleaning roller during a non-image forming period other than the image forming period to be higher than a moving speed of the peripheral surface of the cleaning roller during the image formation. The roller control unit, the non-image forming period, after the moving speed of the peripheral surface of the cleaning roller is set to a velocity greater than the moving speed of the peripheral surface of the cleaning roller during temporarily before Symbol image forming, the image The cleaning device according to claim 1, wherein the cleaning device returns to the moving speed of the peripheral surface of the cleaning roller at the time of formation .   The toner receiving member is disposed from a peripheral surface of the cleaning roller to a radially outer side in a cross section of the roller via a predetermined gap, and stores toner removed from the image bearing drum by the cleaning blade. The cleaning device according to claim 1, wherein The image bearing drum;
A charging unit for uniformly charging the peripheral surface of the image bearing drum;
An exposure unit that forms an electrostatic latent image by performing an exposure operation based on image data on the peripheral surface of the image bearing drum after the charging operation by the charging unit;
A developing unit that visualizes the electrostatic latent image formed on the peripheral surface of the image bearing drum with toner;
A transfer unit for transferring a toner image formed on the peripheral surface of the image bearing drum to a predetermined recording medium;
4. An image forming apparatus comprising: the cleaning device according to claim 1, for removing deposits attached to a peripheral surface of the image carrying drum after being transferred by the transfer unit.

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