JP2002268397A - Cleaning device for imaging device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an imaging device, by which banding due to bristle tilting of the cleaning brush of a photoreceptive drum is prevented, when a machine is not used for a long time. SOLUTION: The installation positions of lubricant 506 and a holder 522 are set, by moving in parallel on the upstream side in the rotating direction with respect to the rotary shaft of a brush roller 505. Even though the lubricant 506 is tilted by the rotation of the brush roller 505, edge is made less likely to be bitten in by the brush of the brush roller 505 corresponding to the portion equal to the movement to the upstream side. Even though the edge bites into by the brush roller 505 because the shape of the lubricant 506 is changed, the pressure is weakened, because the length of a compression spring 523 is elongated, so that the bristle tilting of the brush roller 505 will not occur.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning device for an image forming apparatus such as a copying machine, a printer, and a facsimile, and more particularly, to a cleaning apparatus for an image forming apparatus using an intermediate transfer member.

[0002]

2. Description of the Related Art In an electrophotographic recording apparatus in which a lubricant is applied to the surface of an image carrier to prevent the formation of a filming layer, as shown in FIG. Hold solid lubricant 10 and rotating brush 11 in holder 1
2, a lubricant applying mechanism is proposed in which the lubricant 10 is scraped little by little by the rotation of the rotary brush 11 and applied to an image carrier (not shown). In the figure, 13 is a guide, and 14 is a compression spring for pressurizing.

[0003] In the above prior art, the rotating brush 1
When 1 rotates in one direction, the lubricant 10 falls down in the rotation direction of the rotating brush 11 due to the play of the lubricant 10 and the holder 12,
A phenomenon occurs in which the edge (corner) of the lubricant 10 bites into the rotating brush 11 (FIG. 1B). As a result, hair falls about 2 to 4 mm wide on the rotating brush 11 (see FIG. 2),
The problem is that vibration or abnormal noise is generated by the rotation of the rotating brush 11 that has fallen.

[0004] In the worst case, this vibration causes an abnormal image such as banding in the image. In addition, once the rotating brush 11 has fallen, the rotating brush 11 stops at a state where the lubricant 10 bites into the bristle breaking position. There is a tendency to do so. In addition, this hair fall is particularly likely to occur at an early stage when the pressure of the compression spring 14 for pressing the lubricant 10 to the rotating brush 11 is large.

It is an object of the present invention to provide a cleaning device for an image forming apparatus having the above-described mechanism, which can prevent the falling of the rotating brush from occurring, and can prevent the occurrence of abnormal noise and abnormal images. And

[0006]

According to a first aspect of the present invention, there is provided a cleaning apparatus for an image forming apparatus having an intermediate transfer member, wherein the cleaning apparatus for an image forming apparatus includes an intermediate transfer member. A lubricant supply member for supplying a lubricant to the transfer body, a lubricant, and a lubricant pressurizing member for bringing the lubricant into contact with the lubricant supply member, wherein a brush roller rotating in one direction is used as the lubricant supply member; In addition, the lubricant pressurizing member is installed on the upstream side in the rotation direction with respect to the rotation axis of the brush roller.

According to a second aspect of the present invention, there is provided a cleaning device for an image forming apparatus having an intermediate transfer member, wherein the cleaning device rotates in one direction as a lubricant supply member for the intermediate transfer member. Using a brush roller, a structure in which a lubricant attached to a lubricant holding member is pressed against the brush roller by a pressing member to supply the lubricant to the intermediate transfer body, and the width of the lubricant is set to the width of the lubricant holding member It is characterized by the above.

According to a third aspect of the present invention, there is provided a cleaning device for an image forming apparatus having an intermediate transfer member, wherein the cleaning device rotates in one direction as a lubricant supply member for the intermediate transfer member. A structure in which a lubricant attached to a lubricant holding member is pressed against the brush roller by a pressure member using a brush roller to supply the lubricant to the intermediate transfer body, and an upstream side in a rotation direction of the brush roller The corners of the lubricant located in the above are characterized by curved surfaces.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. An embodiment in which the present invention is applied to an electrophotographic color copying machine (hereinafter, referred to as “color copying machine”) as an example of an image forming apparatus will be described. However, it is to be understood that the present invention is not limited to a copying machine. Of course.

First, a schematic configuration and operation of a color copying machine will be described with reference to FIG. This color copier includes a color image reading device (hereinafter, referred to as a color scanner) 1,
Color image recording device (hereinafter referred to as color printer)
2, a paper feed bank 3 and the like.

The color scanner 1 includes a contact glass 1
Illumination lamp 122 and mirror group 1
An image is formed on the color sensor 125 via the lenses 23a, 123b, 123c and the lens 124, and the color image information of the document 4 is converted into, for example, red (hereinafter referred to as R), green (Gre
en below G), blue (Blue below B)
Is read for each color separation light and is converted into an electric image signal. Here, the color sensor 125 is R, G,
It is composed of B color separation means and a photoelectric conversion element such as a CCD, and simultaneously reads three color images obtained by separating the color of the image of the document 4. Then, based on the R, G, and B color separation image signal intensity levels obtained by the color scanner 1, a color conversion process is performed by an image processing unit (not shown), and black (B
lac and Bk), yellow (Yellow and Y), cyan (Cyan and C), and magenta (Magenta and M) color image data are obtained.

The operation of the color scanner 1 for obtaining the color image data of Bk, Y, C and M is as follows. Upon receiving a scanner start signal which is timed with the operation of the color printer 2 described later, an optical system including the illumination lamp 122 and mirror groups 123a, 123b, 123c scans the document 4 in the left direction of the arrow in FIG. Color image data of one color is obtained for each scan of. By repeating this operation four times in total, for example, each color separation light of R, G, B is read and converted into an electric image signal. Alternatively, R, G, and B image data are stored in the memory. When a memory (not shown) is used, R, G, B in one scan
Image data of three colors is obtained. Then, each time the color printer 2 sequentially visualizes the images and superimposes them to form a final four-color full-color image. Based on the intensity levels of the R, G, and B color separation image signals obtained by the color scanner, a color conversion process is performed by an image processing unit (not shown), and the Bk, Y, C, and M image data are processed. Get.

The color printer 2 includes a photosensitive drum 200 as an image carrier, a writing optical unit 220, a revolver developing unit 230, an intermediate transfer unit 500,
It comprises a next transfer unit 600, a fixing device 700 and the like.

FIG. 4 is a schematic structural view of an image forming section which is a main part of the color copying machine of FIG. This image forming section
As shown by an arrow in the drawing, a photosensitive drum 200 serving as an image carrier that rotates counterclockwise, a charger 201 serving as a charging unit, a cleaning blade 202, and a photosensitive brush cleaning device 300 including a cleaning brush (fur brush) 203. , A discharge lamp 206, a potential sensor 204, a developed density pattern detector 205, a writing optical unit 220 (FIG. 4 shows only the laser beam L for exposure), and a revolver developing unit 23 as a developing unit.
0, intermediate transfer unit 500, secondary transfer unit 600
And so on.

The writing optical unit 220 converts the color image data from the color scanner 1 into an optical signal, and applies a laser beam corresponding to the image of the document on the surface of the photosensitive drum 200 uniformly charged by the charger 201. L
To perform optical writing to form an electrostatic latent image on the surface of the photosensitive drum 200. This writing optical unit 2
Reference numeral 20 denotes, for example, a semiconductor laser as a light source, a laser emission drive control unit, a polygon mirror and its rotation motor, f
/ Θ lens, reflection mirror, etc.

The revolver developing unit 400
Are a Bk developing device 401 using Bk toner, a C developing device 402 using C toner, and an M developing device 40 using M toner.
3, a Y developing device 404 using Y toner, a developing revolver driving unit for rotating the entire unit counterclockwise, and the like.

Each of the developing machines 401 to 404 installed in the revolver developing unit 400 has a developing material carrier which rotates by bringing an ear of the developing material into contact with the surface of the photosensitive drum 200 in order to develop an electrostatic latent image. As a developing sleeve, and a developer paddle that rotates to pump up and agitate the developer,
And a developing sleeve driving unit for rotating the developing sleeve clockwise as indicated by the arrow.

In this embodiment, each of the developing machines 401 to 40
The toner in 4 is negatively charged by stirring with the ferrite carrier, and a developing bias power supply (not shown) as a developing bias applying means (not shown) applies a negative DC voltage Vdc (DC component) to each developing sleeve to an AC voltage Vac (DC component). A developing bias voltage on which an AC component is superimposed is applied, and each developing sleeve is biased to a predetermined voltage with respect to the metal base layer of the photosensitive drum 200.

In a standby state of the main body of the color copying machine, the revolver developing unit 400 is stopped at the home position where the Bk developing machine 401 is located at the developing position, and when the copy start key is pressed, the original starts reading image data. Then, based on the color image data, the optical writing by the laser beam L, that is, the formation of the electrostatic latent image starts (hereinafter, the electrostatic latent image based on the Bk image data is referred to as “Bk electrostatic latent image”).
That. The same applies to C, M, and Y).

In order to enable development from the front end of the Bk electrostatic latent image, before the front end of the electrostatic latent image reaches the Bk development position, the rotation of the Bk developing sleeve is started to start the Bk electrostatic latent image. Is developed with Bk toner. After that, the developing operation of the Bk electrostatic latent image is continued. When the rear end of the Bk electrostatic latent image passes the Bk developing position, the revolver is immediately moved until the developing machine of the next color comes to the developing position. The developing unit 400 rotates. This is completed at least before the leading end of the electrostatic latent image based on the next image data reaches the developing position.

The intermediate transfer unit 500 includes an intermediate transfer belt 501 which is an intermediate transfer member stretched over a plurality of rollers described later. This intermediate transfer belt 50
1, a secondary transfer belt 601 as a transfer material carrier of the secondary transfer unit 600, a secondary transfer bias roller 605 as a secondary transfer charge applying unit, and a belt cleaning blade 504 as an intermediate transfer body cleaning unit. ,
A lubricant application brush 505 serving as a lubricant application means is disposed so as to face the lubricant application brush 505.

The intermediate transfer belt 501 includes a primary transfer bias applying roller 507, a belt driving roller 508, a belt tension roller 509, and a primary transfer charge applying means.
Secondary transfer opposed roller 510, cleaning opposed roller 5
11 and an earth roller 512. Each roller is formed of a conductive material, and each roller other than the primary transfer bias roller 507 is grounded.

The primary transfer bias roller 507 is supplied with a primary transfer power supply 801 controlled by a constant current or a constant voltage.
A transfer bias controlled at a predetermined current or voltage according to the number of superimposed toner images is applied. The intermediate transfer belt 501 is driven by a drive motor (not shown) in a direction indicated by an arrow.
8 is driven in the direction of the arrow. The intermediate transfer belt 501 is made of a semiconductor or an insulator and has a single-layer or multilayer structure.

A transfer section for transferring the toner image on the photosensitive drum 200 to the intermediate transfer belt 501 (hereinafter referred to as a “primary transfer section”)
In this case, the intermediate transfer belt 501 is stretched by the primary transfer bias roller 507 and the ground roller 512 so as to be pressed against the photosensitive drum 200 side, so that a predetermined distance is provided between the photosensitive drum 200 and the intermediate transfer belt 501. A nip portion having a width is formed.

The lubricant applying brush 505 grinds the zinc stearate 506 as a lubricant formed in a plate shape,
The polished fine particles are applied to the intermediate transfer belt 501. The lubricant application brush 505 is also configured to be adjacent to the intermediate transfer belt 501, and is controlled so as to contact the intermediate transfer belt 501 at a predetermined timing.

The secondary transfer unit 600 includes a secondary transfer belt 601 and the like stretched over three support rollers 602, 603, and 604, and a stretch portion between the support rollers 602 and 603 of the intermediate transfer belt 501 is formed. The secondary transfer opposing roller 510 can be pressed against the roller. One of the three support rollers 602, 603, and 604 is a driving roller that is rotationally driven by a driving unit (not shown), and the driving roller drives the secondary transfer belt 601 in a direction indicated by an arrow in the drawing.

The secondary transfer bias roller 605 is a secondary transfer means, and is disposed so as to sandwich the intermediate transfer belt 501 and the secondary transfer belt 601 between the secondary transfer opposing roller 510 and a constant current control. A transfer bias of a predetermined current is applied by a secondary transfer power supply 802 to be performed. The support roller 602 and the secondary transfer bias roller 605 are arranged so that the secondary transfer belt 601 and the secondary transfer bias roller 605 can take a position where the secondary transfer belt 601 is pressed against the secondary transfer opposing roller 510 and a position where the secondary transfer belt 601 and the secondary transfer bias roller 605 are separated. Is provided in the direction of the arrow. The secondary transfer belt 601 and the support roller 6 at the separated position
02 is indicated by a two-dot chain line in FIG. In the figure, reference numeral 650 denotes a pair of registration rollers, and a secondary transfer bias roller 605.
The transfer paper P, which is a transfer material, is fed at a predetermined timing between the intermediate transfer belt 501 and the secondary transfer belt 601 held between the secondary transfer belt 601 and the intermediate transfer belt 510.

Fixing roller pair 70 of secondary transfer belt 601
A transfer sheet discharging charger 606 serving as a transfer material discharging unit and a belt discharging charger 607 serving as a transfer material carrier discharging unit are provided on a portion stretched around the first support roller 603.
Are opposed to each other. A cleaning blade 608, which is a transfer material carrier cleaning unit, is in contact with a portion of the secondary transfer belt 601 that is stretched around the lower support roller 604 in the drawing.

The transfer paper discharging charger 606 discharges the electric charges held in the transfer paper so that the transfer paper can be separated from the secondary transfer belt 601 by the strength of the transfer paper itself. is there. The belt static elimination charger 607 eliminates electric charges remaining on the secondary transfer belt 601. Further, the cleaning blade 608 is for removing the adhered matter adhered to the surface of the secondary transfer belt 601 for cleaning.

In the color copier thus constructed, when the image forming cycle is started, the photosensitive drum 2
Reference numeral 00 denotes a counterclockwise rotation indicated by an arrow by a drive motor (not shown), and the intermediate transfer belt 501 is rotated clockwise by an arrow by a belt driving roller 508. As the intermediate transfer belt 501 rotates, primary transfer is performed by a transfer bias by a voltage applied to the primary transfer bias roller 507 to form a Bk toner image, a C toner image, an M toner image, and a Y toner image. Then, a toner image is finally formed on the intermediate transfer belt 501 in the order of Bk, C, M, and Y.

For example, a Bk toner image is formed as follows. The charging charger 201 uniformly charges the surface of the photosensitive drum 200 to a predetermined potential with negative charges by corona discharge. Then, raster exposure using laser light is performed by a writing optical unit (not shown) based on the Bk color image signal. When this raster image is exposed, in the exposed portion of the surface of the photosensitive drum 200 that is initially uniformly charged, the charge proportional to the amount of exposure light disappears, and a Bk electrostatic latent image is formed.

When the negatively charged Bk toner on the Bk developing roller of the Bk developing device 401 comes into contact with the Bk electrostatic latent image, the toner adheres to the portion of the photosensitive drum 200 where the charge remains. Instead, the toner is attracted to a portion having no charge, that is, an exposed portion, and a Bk toner image similar to the electrostatic latent image is formed. The Bk toner image formed on the photosensitive drum 200 is transferred onto the surface of the intermediate transfer belt 501 that is driven at a constant speed while being in contact with the photosensitive drum 200. Hereinafter, the transfer of the toner image from the photosensitive drum 200 to the intermediate transfer belt 501 is referred to as “belt transfer”.

A small amount of untransferred residual toner remaining on the surface of the photosensitive drum 200 after the belt transfer is cleaned by the photosensitive member cleaning device 210 in preparation for reuse of the photosensitive drum 200.

On the photosensitive drum 200 side, the process proceeds to the C image forming process after the Bk image forming process, and reading of the C image data by the color scanner starts at a predetermined timing.
A C electrostatic latent image is formed on the surface of the photosensitive drum 200 by writing the laser light with the C image data.

Then, after the trailing end of the previous Bk electrostatic latent image has passed and before the leading end of the C electrostatic latent image has reached, the rotating operation of the revolver developing unit 400 is performed, and the C developing device 402 is set to the development position, and the C electrostatic latent image is developed with the C toner. Thereafter, the development of the C electrostatic latent image area is continued, but when the rear end of the C electrostatic latent image passes, the revolver developing unit rotates as in the case of the Bk developing machine 401, and Is moved to the developing position. This is also completed before the leading end of the next M electrostatic latent image reaches the developing position. Note that, for the M and Y image forming steps, the respective color image data reading,
The operations of forming and developing the electrostatic latent image are the same as those of the above-described steps Bk and C, and thus the description thereof is omitted.

On the intermediate transfer belt 501, Bk, C, M, and Y toner images sequentially formed on the photosensitive drum 200 are sequentially aligned and transferred to the same surface. As a result, a toner image in which a maximum of four colors are superimposed on the intermediate transfer belt 501 is formed.

At the time when the image forming operation is started, the transfer paper P is fed from a paper feed unit such as a transfer paper cassette (not shown) or a manual feed tray, and stands by at the nip of the pair of registration rollers 650. Secondary transfer opposing rollers 510 and 2
When the leading end of the toner image on the intermediate transfer belt 501 approaches the secondary transfer portion where the nip is formed by the next transfer bias roller, the pair of registration rollers is adjusted so that the leading end of the transfer paper P coincides with the leading end of the toner image. 650 is driven, and registration of the transfer paper P and the toner image is performed.

Then, the transfer paper P is transferred to the intermediate transfer belt 501.
The sheet passes through the secondary transfer portion while being superposed on the upper toner image. At this time, the four-color superimposed toner image on the intermediate transfer belt 501 is collectively transferred onto the transfer paper by the transfer bias by the voltage applied to the secondary transfer bias roller 605 by the secondary transfer power supply 802. Then, the secondary transfer belt 601
The transfer paper P is discharged when passing through a portion facing the transfer paper discharging charger 606 disposed on the downstream side of the secondary transfer portion in the moving direction of the transfer paper, and is separated from the secondary transfer belt 601 toward the fixing roller pair 701. Sent.

The toner image is fused and fixed at the nip portion of the pair of fixing rollers 701, sent out of the apparatus body by a pair of discharge rollers (not shown), and stacked face up on a copy tray (not shown) to obtain a full-color copy. On the other hand, the surface of the photoconductor drum 200 after the belt transfer is cleaned by the photoconductor cleaning device 210 and is uniformly discharged by a discharge lamp (not shown). Further, the toner remaining on the surface of the intermediate transfer belt 501 after the transfer of the toner image onto the transfer paper P is transferred to the belt cleaning blade 50 pressed against the intermediate transfer belt 501 by a separation / contact mechanism (not shown).
4 is cleaned.

Here, at the time of repeat copying, the operation of the color scanner and the image formation on the photosensitive drum 200 are performed as follows.
After the fourth color (Y) image forming process of the first sheet, the process proceeds to the second color (Bk) image forming process at a predetermined timing. Further, the intermediate transfer belt 501 transfers the second sheet of Bk toner to the area of the surface cleaned by the belt cleaning blade 504 following the batch transfer step of the first sheet of four-color superimposed toner image onto transfer paper. The image is transferred to the belt. Thereafter, the operation is the same as that of the first sheet.

The above is the copy mode for obtaining a four-color full-color copy. However, in the three-color copy mode and the two-color copy mode, the same operation as described above is performed for the designated color and the number of times. Become. In the case of the single-color copy mode, only the developing device of the predetermined color of the revolver developing unit 400 is in the developing operation state and the belt cleaning blade 504 is pressed against the intermediate transfer belt 501 until the predetermined number of sheets is completed. The copy operation is performed with the position as it is.

FIG. 5 is a schematic view of a cleaning device for the intermediate transfer belt. In this cleaning device, the cleaning blade 504 includes a cleaning opposing roller 511.
Then, the holding arm 520 is rotated by a contact / separation mechanism (not shown) to perform a contact / separation operation with respect to the intermediate transfer belt 501. The brush roller 505 scrapes and applies a lubricant 506 such as zinc stearate onto the intermediate transfer belt 501. The lubricant 506 is held in the holder 522,
The holder 522 is compressed with the brush roller 5 by the compression spring 523.
05, the lubricant 506 is scraped off from the tip side in the pressing direction by the rotation of the brush roller 505, and falls onto the vicinity of the contact portion between the cleaning blade 504 and the intermediate transfer belt 501. .
In the figure, reference numeral 524 denotes a guide for the holder 522.

FIG. 6 is a schematic view of a main part of an embodiment of the cleaning device of the image forming apparatus according to the present invention. This device adjusts the installation positions of the lubricant 506 and the holder 522,
The brush roller 505 is installed so as to move parallel to the rotation shaft upstream of the rotation axis of the brush roller 505. Even in this device configuration, the lubricant 506 falls due to the rotation of the brush roller 505, but the edge is less likely to bite into the brush of the brush roller 505 by the amount moved to the upstream side. It is conceivable that the shape of the lubricant 506 changes with time and the edge of the lubricant 506 bites into the brush roller 505.
23, the length of the brush roller 5
No hair fall occurs in 05.

FIG. 7 is a schematic view of a main part of another embodiment of the cleaning device of the image forming apparatus according to the present invention.
In this apparatus, the width a of the lubricant 506 is changed to the width b of the holder 522.
Or more, and the play between the lubricant 506 and the guide 524 is reduced. That is, the guide 524
Width c> width a of lubricant 506 ≧ width b of holder 522. The lubricant 506 has a draft angle of about 3 degrees due to the conventional molding conditions, and this causes more play with the guide 524. However, depending on the molding conditions, the draft angle may be reduced or reduced to zero. And it is advantageous for backlash removal.

Conventionally, the holder 522 is used to prevent the lubricant 506 from directly contacting the guide 524 for the purpose of preventing the lubricant 506 from being damaged, abraded, and ensuring slidability.
In general, the width b of the lubricant 506 is set to be equal to or greater than the width a of the lubricant 506. However, under actual use conditions, the lubricant 506 falls down and is used in contact with the guide 524.
The width of the guide 52 is made larger than the width of the holder 522.
It is considered that reducing the gap between the lubricant 4 and the lubricant 506 is not a problem. As a result, even when the brush roller 505 rotates, the lubricant 506 does not tilt, and the brush roller 505 is always in contact with the plane of the lubricant 506, so that no hair falls.

FIG. 8 is a schematic view of a main part of still another embodiment of the cleaning device of the image forming apparatus according to the present invention. In this device, the corner of the lubricant 506 is curved. Conventionally, it has been performed to form a curved surface of about R1 at a corner by a method of forming a lubricant, but in the present embodiment,
By attaching R having a large radius of curvature such as R4 to R5 to the edge of the lubricant 506 with respect to the upstream side in the rotation direction of the brush roller 505, even if the lubricant 506 is inclined, the lubricant 506 is in contact with the brush roller 505 at the curved surface. is there. Therefore, hair fall does not occur. Even if the shape of the lubricant 506 changes with time, the compression spring 5
Since the pressure at 23 is small, hair fall does not occur. Further, since the corners of the lubricant 506 are curved, the brush roller 505 comes into contact with the lubricant 506 in a large area from the beginning, so that it is possible to expect the effect of eliminating the shortage of the lubricant supply at the initial stage.

[0047]

As described above, the cleaning device for an image forming apparatus according to the present invention has an effect that abnormal noise and abnormal images can be prevented by preventing the brush roller from falling down.

The cleaning device for an image forming apparatus according to claims 2 and 3 has an effect that, in addition to the above-mentioned common effects, the brush roller can be prevented from falling down only by changing the shape of the lubricant without changing the installation position of the lubricant. is there.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of a lubricant applying mechanism in a conventional cleaning device of an image forming apparatus.

FIG. 2 is a schematic diagram showing a state in which hair has fallen on a cleaning brush.

FIG. 3 is a sectional view showing a schematic configuration of a color copying machine.

FIG. 4 is a schematic configuration diagram of an image forming unit which is a main part of the color copying machine of FIG. 1;

FIG. 5 is a schematic configuration diagram of an intermediate transfer belt and a cleaning device of the image forming unit in FIG. 4;

FIG. 6 is a schematic view of a main part of an embodiment of the cleaning device of the image forming apparatus according to the present invention.

FIG. 7 is a schematic diagram of a main part of another embodiment of the cleaning device of the image forming apparatus according to the present invention.

FIG. 8 is a schematic view of a main part of still another embodiment of the cleaning device of the image forming apparatus according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Color scanner 2 Color printer 3 Paper supply bank 4 Document 200 Photoconductor drum 201 Charger 210 Photoconductor cleaning device 400 Revolver developing unit 500 Intermediate transfer unit 501 Intermediate transfer belt 504 Cleaning blade 505 Brush roller 506 Lubricant 507 Primary transfer bias Roller 508 Belt drive roller 511 Cleaning opposing roller 520 Holding arm 522 Holder 523 Compression spring 524 Guide 600 Secondary transfer unit 601 Secondary transfer belt 602 to 604 Support roller 605 Secondary transfer bias roller 650 Registration roller pair 700 Fixing unit 701 Fixing roller 801 Primary transfer power supply 802 Secondary transfer power supply

Claims (3)

[Claims] 1. A cleaning device for an image forming apparatus having an intermediate transfer member, comprising: a lubricant supply member for supplying a lubricant to the intermediate transfer member; a lubricant; and a lubricant agent for bringing the lubricant into contact with the lubricant supply member. A brush member that rotates in one direction as the lubricant supply member, and the lubricant and the lubricant pressing member are installed on the upstream side in the rotation direction with respect to the rotation axis of the brush roller. Cleaning device for image forming apparatus. 2. A cleaning device for an image forming apparatus having an intermediate transfer member, wherein a brush roller rotating in one direction is used as a lubricant supply member for the intermediate transfer member, and the brush roller is attached to a lubricant holding member. A cleaning device for supplying a lubricant to the intermediate transfer body by pressing the lubricant with a pressing member, wherein the width of the lubricant is greater than the width of the lubricant holding member. 3. A cleaning device for an image forming apparatus having an intermediate transfer member, wherein a brush roller rotating in one direction is used as a lubricant supply member for the intermediate transfer member, and the brush roller is attached to a lubricant holding member. The intermediate transfer body is supplied with the lubricant by pressing the lubricant with a pressure member, and the corner of the lubricant located upstream with respect to the rotation direction of the brush roller is curved. Cleaning device for an image forming apparatus.