JPH06236134A - Cleaning device for image forming device - Google Patents

Abstract

PURPOSE:To prevent flawing of a photosensitive body by removing the additives on the photosensitive body without accumulating toners and additives between the fibers of a cleaning brush. CONSTITUTION:The cleaning brush 32 of an image forming device, which transfers the toner image on a drum- or belt-shaped photosensitive body onto a transfer material and removes the residual toners after the transfer by the cleaning brush 32 and a cleaning blade 33, is composed of bundles of insulating fibers and conductive fibers and is constituted by binding a band-shaped brush member, which is formed by flocking four bundles and three bundles per 11mm in the transverse direction of a base fabric 40 as one unit in W weave and in an array form to this base fabric and specifying the transverse spacing L3 between the respective fiber bundles to 2 to 3mm, the width L2 of the W weave to 2 to 4mm and the spacing L1 between the three bundles and the four bundles to 0.5 to 1.5mm, around a shaft.

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 cleaning toner remaining on a photoconductor in an image forming apparatus such as an electrostatic copying machine, a facsimile machine or a printer.

[0002]

2. Description of the Related Art FIG. 1 is a block diagram showing an example of a conventional color electrophotographic copying machine, but the present invention is preferably applied to this type of copying machine. This copying machine comprises an automatic document feeder 1, an image input section 2, an image output section 3 and a transfer material feeding section 4.
The color original document is placed on the platen glass 5 by the automatic original document feeder 1. The image input unit 2 includes an imaging unit 6, a wire 7 for driving the unit, a drive pulley 9, etc., and a CC in the imaging unit 6
In the case of four full colors using a D line sensor and a color filter, the color original is the light primary color B.
After reading each of (blue), G (green), and R (red) and converting into a digital image signal, this signal is the primary color of toner Y
(Yellow), C (cyan), M (magenta), K (black), and further, in order to improve reproducibility of color, gradation, definition, etc., various data processing is performed to obtain the color gradation. The toning toner signal is converted into an on / off binary signal and output to the image output unit 3. The image output unit 3 includes the scanner 1
0, a photoconductor drum 11, a charger 12 for uniformly charging the photoconductor drum 11 around the photoconductor drum 11, and a developing device 13 for developing an electrostatic latent image into a toner image. , A transfer device 1 for transferring a toner image to a transfer material
4. A cleaning device 16 for collecting the untransferred residual toner is arranged, and the photosensitive drum 11 is rotationally driven by an electric motor as shown by an arrow. In the laser output unit 10a of the scanner 10, the image input unit 2
The image signal of yellow, for example, is converted into an optical signal, and a latent image corresponding to the original image is formed on the photosensitive drum 11 via the polygon mirror 10b, the f / θ lens 10c, and the reflection lens 10d. For example, if the yellow latent image is transferred to the transfer material via the developing device 13, the photosensitive drum 11
After the residual toner is removed by the cleaner 16, the toner is charged by the charger 12, and the laser output unit 10a outputs a magenta image signal. Hereinafter, latent images of cyan and black image signals are sequentially formed.

The developing device 13 is a yellow developing device 13.
Y, magenta developing device 13M, cyan developing device 13C,
It has a black developing device 13K, and each developing device is arranged around the rotation shaft. Then, for example, when forming a yellow toner image, the yellow developing device 13 is placed at the position shown in the drawing.
When developing with Y to form a magenta toner image, the developing device 13 is rotated to dispose the magenta developing device 13M at a position in contact with the photosensitive drum 11. The cyan and black developments are similarly operated. A transfer material carrier made of a dielectric sheet is stretched around the outer periphery of the transfer drum 15 that constitutes the transfer device 14. The transfer drum 15 is connected to a dedicated electric motor or the photosensitive drum 11 by a gear, and is illustrated in the drawing. It is driven to rotate as shown by the arrow.
Around the transfer drum 15, a transfer charger 17, a toner charge control static eliminator 19, a peeling claw 20, a static eliminator 21, a cleaner 22, a pressing roll 23, and a suction charger 25 are arranged. The transfer material conveyed from the transfer material supply unit 4 via the paper feed roller 4a and the paper feed guide 4b is attracted to the dielectric sheet by corona discharge of the attraction charger 25. The transfer drum 15 rotates in synchronization with the photoconductor drum 11. For example, a toner image developed in yellow is transferred to a transfer material by a transfer charger 17, and further, by rotation of the transfer drum 15, another toner image is sequentially transferred. The color is transferred.

When the transfer drum is rotated four times and the transfer of the four colors is completed, AC charge is removed by the separating discharger 18 provided inside and outside the transfer drum 15, and the transfer material is peeled off.
The toner image is separated by the conveyance belt 27 and sent to the fixing device 29, and the toner image is melted and fixed by the heat and pressure roller 30, and the copy cycle ends. Conventionally, the cleaning device 16 often cleans residual toner by bringing a blade of a rubber-like elastic body into contact with the photoconductor in view of advantages of configuration, cost, space and the like. However, the blade alone cannot completely clean the large amount of toner, paper fibers, fillers, etc. that remain on the photoconductor.Therefore, a cleaning brush is provided on the upstream side of the blade. After removing the fibers and the filler, the residual toner is removed with a blade.

[0005]

By the way, the toner is externally or internally added with an additive in order to obtain a charging property, a transfer property and a cleaning property. As the additive, a metal oxide having a size of several tens nm to several microns is mainly used. Although these additives are developed on the photoconductor together with the toner, even if the toner is transferred onto the recording paper, it remains with the untransferred toner or alone on the photoconductor.
Although these residual additives are removed by the cleaning brush, they are not perfect and accumulate on the edges of the blade and scratch the photoreceptor. As a result, white stripes appear on the copy, and the image quality is greatly impaired. Conventionally, in a cleaning device in which a cleaning brush is used in combination with a cleaning blade, the cleaning brush is made of a bundle of insulating fibers or a mixed fiber of insulating fibers and conductive fibers, and a bundle of 800 to 2000 bundles per square inch, I have flocked hair. Then, the distance between the bundles is about 1 mm or less in the front, rear, left and right, and the fibers are very densely planted on the shaft of the cleaning brush. Therefore, even if the residual toner and additives on the photoconductor are removed, the toner and additives in the brush cannot be removed by the flicker bar even if they remain in the brush to some extent. If the toner adheres to the brush or the toner accumulated in the brush hardens the brush, the photoconductor is damaged.

The present invention has been conceived in view of the above, and is an image forming apparatus capable of removing additives on a photoconductor and preventing scratches on the photoconductor without accumulating toner or additives between cleaning brushes. It is an object of the present invention to provide a cleaning device.

[0007]

In order to achieve the above object, a cleaning device for an image forming apparatus according to the present invention comprises:
In a cleaning device of an image forming apparatus, in which a toner image on a drum-shaped or belt-shaped photosensitive member is transferred onto a transfer material and residual toner after transfer is removed by a cleaning brush 32 and a cleaning blade 33, the cleaning brush 32 is , A bundle of insulating fibers and conductive fibers, and this fiber bundle is planted in rows by W weave with 4 and 3 bundles per 11 mm in the width direction of the base cloth 40 as one unit. , The widthwise spacing of each fiber bundle is 2-3
mm, W weaving width is 2 to 4 mm, and a band-shaped brush member having an interval of 3 bundles and 4 bundles of 0.5 to 1.5 is wound around the shaft 41. Further, the fiber bundles are flocked in rows in the width direction of the base cloth, and the fiber bundles to be flocked in rows are 5 to 8 bundles per 10 mm, the interval between the rows is t, and the length of the fiber bundle is t. When the height is h, 0.3 ≦ t /
The relation is h ≦ 1.0. Also cleaning brush 3
The peripheral speed of 2 is 1.0 to 1.4 times the peripheral speed of the photosensitive member, and the amount of interference between the cleaning brush 32 and the flicker bar 33 (BF
I) is 0.5 to 1.5 mm, the amount of interference (BPI) between the cleaning brush 32 and the photosensitive member is 0.5 to 1.5 mm, and the above brush fibers to be applied to the base cloth are cleaned by the cleaning brush 32.
To the rotation direction side at a hair fall angle of 0 to 45 °, the brush fiber length is set to 6 to 7 mm, and the tip force of the cleaning brush 32 is set from 30 g / 100 mm to 160 g /
The range is 100 mm.

[0008]

[Operation] Toner and additives do not accumulate between the cleaning brushes and become hard, and the removed additives do not adhere to the photoreceptor again.

[0009]

EXAMPLES Examples of the present invention will be described below with reference to the drawings. FIG. 2 is a sectional view showing an embodiment of the cleaning device in the image forming apparatus according to the present invention. FIG. 2 shows the photoconductor 11 and the cleaning device 16 described in FIG. 1, and in the cleaning device 16, when the rotation direction of the photoconductor 11 is the direction of the arrow in the drawing, the toner flows out to the outside in order from the upstream side. A film seal 31, a cleaning brush 32, and a cleaning blade 33 for preventing the above are provided.

The cleaning blade 33 is formed of an elastic material such as rubber, one end of which is fixed to the housing 34 through a mounting member 35, and the other end of which is in contact with the photoconductor 11 at an acute angle with respect to its rotation direction. Is arranged as.
The cleaning brush 32 is provided so as to be rotatable in the direction opposite to the photoconductor 11 and to overlap the photoconductor 11 as shown in FIG. 3. By rotating in contact with the photoconductor 11, the cleaning brush 32 is transferred. Photoconductor 11 without being transferred by
It is arranged so as to scrape off the toner and the carrier remaining on. The housing 34 has a cleaning brush 3
A flicker bar 36 that mechanically removes the toner adhered to the cleaning roller 2 is provided so as to overlap the cleaning brush 32, and a toner transporting roller 37 rotates on the opposite side of the cleaning brush 32 from the photoconductor 11. The residual toner, which is arranged so that it can be collected in the housing 34, is stored in a toner collection box (not shown). In FIG. 3, BPI is a cleaning brush 32.
And the photoconductor 11, and the BFI is the cleaning brush 32.
And the amount of interference with the flicker cover 36.

In the present invention, the cleaning brush 3
2 is composed of an insulating fiber and a conductive fiber, and the photoconductor 11 side is grounded. Examples of the cleaning brush will be described below. Example PP (polypropylene) is adopted as the insulating fiber, thickness 17d (denier) is 40f (filament), and conductive fiber B12N (trade name Bertron) is adopted, and thickness 10d is 32f, each 2f. 1 in bundles together
As a bundle of books, as shown in FIG.
Plant at 0. Then, when viewed from the back of the base cloth 40 so that the density is 125 bundles / inch ² , the base cloth 40 is planted so that the point A shown in FIG. 4A is as shown in FIG. The width of the base cloth 40 is 10.5 mm, and as shown in FIG. 4B, the interval L between the row of 4 bundles and the row of 3 bundles with 4 bundles and 3 bundles as one unit
₁ is 1.0 mm, 4 bundles, and 3 bundles of W weave width (interval between points A) L ₂ is 3 mm, and the spacing L ₃ between each bundle is 2.5 mm. This is spirally wound around the shaft 41. At this time, the pitch when wound is about 12 mm, and when viewed from the direction perpendicular to the brush axis, it becomes as shown in FIG. In order to simplify the drawing, FIGS. 4A, 4B, and 5 show the arrangement of the root portion of the bundle of brushes, and the bristles are omitted.

Experiments were carried out on the above-mentioned embodiment under the following apparatus and conditions. Photosensitive member: OPC (organic photosensitive drum) 16 with a diameter of 84 mm
0 mm / sec Blade: Urethane 70 Hs, Thickness 2.0 mm, Free length 10 mm, Biting amount 1.0 mm Brush: Diameter 19 mm, BPI 1.0 mm, BFI1.
0 mm, peripheral speed 190 mm / sec Development system: reversal development Table 1 shows the copy volume until white streaks appear on the copy and the image quality is impaired by testing the example and the conventional example.

[0013]

[Table 1]

As described above, in the embodiment, the conventional example,
The number of copies until the occurrence of an image defect was increased from 1.5 times to 2 times compared with the above. In the above embodiment, the distance L ₃ between the bundles in one horizontal row in FIG. 4 is 2.0 mm or less, and the distance L ₁ between the rows of 3 bundles and the row of 4 bundles is 0.5 mm or less. However, if the width L _{2 of the} W weave is set to 2.0 mm or less, toner and additives are accumulated in the brush like a conventional brush, and the effect is lost. In addition, the distance L ₃ in the width direction of each fiber bundle is 3.0 mm or more, the distance L ₁ between rows is 1.5 mm or more, and the width of the W weave is 4.0 mm.
In the above case, the ability of the brush to remove the additive on the photoconductor is lowered, and the effect is lost.

Example: PP (polypropylene) is used as the insulating fiber, thickness 17d (denier) is 40f (filament), and conductive fiber B12N (trade name Bertron) is used, and thickness 10d is 32f. 6 into 2 bundles together to obtain a density of 125 bundles / inch ² .
As shown in FIG. The width of the base cloth 40 is W10 mm, and a fiber bundle is planted at a distance L of 4 mm between the rows at right angles to the axial direction of the base cloth 40 as shown in FIG. Then, the length of the bundle of fibers is adjusted to 6.5 mm by shirring. After the base cloth is spirally wound around the shaft 41, it becomes as shown in FIG.

In this example, an experiment was conducted under the following apparatus and conditions. Photosensitive member: OPC (organic photosensitive drum) 16 with a diameter of 84 mm
0 mm / sec Blade: Urethane 70 Hs, Thickness 2.0 mm, Free length 10 mm, Biting amount 1.0 mm Brush: Diameter 19 mm, BPI 1.0 mm, BFI1.
0 mm, peripheral speed 190 mm / sec, developing system: reversal development When this example and the conventional example were tested, white streaks appeared on the copy, and the copy volume until the image quality was impaired was exactly the same as the above example. As shown in Table 1, the same effect as that of the example was obtained. It should be noted that it is impossible to plant 9 or more pieces in the width 10 mm of the base cloth 40, and if the number is 4 or less, the scraping force becomes small and the requirement cannot be satisfied. Further, the minimum value of the distance between rows is up to 0.3 times the length of the fiber, and if it is less than 0.3 times, what is caught by the brush cannot be flicked and the drum is reattached again. On the other hand, if the distance between the rows is the same as the length of the brush fibers, the ability to scrape off the toner and the like is reduced.

Next, the speed of the cleaning brush 32 relative to the photosensitive member 11, the amount of interference (BFI) between the cleaning brush 32 and the flicker bar 36, the cleaning brush 3
An example in which the amount of interference (BPI) between the photosensitive member 11 and the photoconductor 11 and the bristle collapse angle of the brush fiber with respect to the base fabric when the brush fiber of the cleaning brush 32 collapses in the brush rotation direction and the length of the brush bristles are changed Are shown below. The cleaning devices in this embodiment are the same as those in FIGS. 2 to 5 used in the above embodiment. See also FIG.
Represents the definition of the hair fall angle θ of the brush fiber 42 with respect to the base cloth, and the hair fall angle θ means the angle tilted toward the brush rotation direction with respect to the posture perpendicular to the base cloth.

Example PP (polypropylene) is used as the insulating fiber, thickness 17d (denier) is 40f (filament), and conductive fiber B12N (trade name Bertron) is used, and thickness 10d is 32f. A parameter experiment was performed using the cleaning brush thus prepared, by varying the peripheral speed of the cleaning brush. The result is shown in FIG. The vertical axis is the copy volume until white streaks appear on the copy and the image quality is impaired, and the horizontal axis is the peripheral speed of the cleaning brush.
An experiment was conducted on this example using the following apparatus and conditions. Photoconductor: OPC (organic photoconductor drum) with a diameter of 84 mm, peripheral speed 160 mm / sec Blade: Urethane 70 Hs, thickness 2.0 mm, free length 10 mm, bite amount 1.0 mm Brush: diameter 19 mm, BPI 1.0 mm, peripheral speed ( Thirteen
0 mm / sec to 290 mm / sec) BFI1.0
mm, hair fall angle 20 ° Development system: reversal development As a result, the peripheral speed of the cleaning brush is 160 mm / s.
It was found that it has a maximum value between ec and 220 mm / sec.

Example PP (polypropylene) is adopted as the insulating fiber, thickness 17d (denier) is 40f (filament), and conductive fiber B12N (trade name Bertron) is adopted, and thickness 10d is 32f. A parameter experiment was performed by shaking the BFI using the cleaning brush. The result is shown in FIG. The vertical axis is the copy volume until white streaks appear on the copy and the image quality is impaired, and the horizontal axis is BFI. An experiment was conducted on this example using the following apparatus and conditions. Photoconductor: OPC (organic photoconductor drum) with a diameter of 84 mm, peripheral speed 160 mm / sec Blade: Urethane 70 Hs, thickness 2.0 mm, free length 10 mm, bite amount 1.0 mm Brush: diameter 19 mm, BPI 1.0 mm, BFI
(0.0 mm to 2.0 mm), hair fall angle of 20 °, peripheral speed of 190 mm / sec Development system: reversal development As a result, it was found that BFI has a maximum value between 0.5 mm and 1.5 mm.

Example PP (polypropylene) is used as the insulating fiber, thickness 17d (denier) is 40f (filament), and conductive fiber is B12N (trade name Bertron), and thickness 10d is 32f. A parameter experiment was performed by shaking the BPI with the cleaning brush. The result is shown in FIG. The vertical axis is the copy volume until white streaks appear in the copy and the image quality is impaired, and the horizontal axis is the BPI. An experiment was carried out on the above-mentioned example using the following apparatus and conditions. Photoconductor: OPC (organic photoconductor drum) with a diameter of 84 mm, peripheral speed 160 mm / sec Blade: Urethane 70 Hs, thickness 2.0 mm, free length 10 mm, bite amount 1.0 mm Brush: diameter 19 mm, BPI (0.0 mm to 2) .0
mm), peripheral speed 190 mm / sec, BFI 1.0 mm,
Hair fall angle 20 °, development system: reversal development As a result, it was found that the BPI has a maximum value between 0.5 mm and 1.5 mm.

Example PP (polypropylene) is used as the insulating fiber, thickness 17d (denier) is 40f (filament), and conductive fiber is B12N (trade name Bertron), and thickness 10d is 32f. A parameter experiment was carried out using the cleaning brush thus prepared, in which the brush collapsed.
FIG. 6 is a conceptual diagram showing how the brush collapses. The result is shown in FIG. The vertical axis is the copy volume until white streaks appear on the copy and the image quality is impaired, and the horizontal axis is the angle of the brush tip of the cleaning brush. An experiment was carried out on the above-mentioned example using the following apparatus and conditions. Photoconductor: OPC (organic photoconductor drum) with a diameter of 84 mm, peripheral speed 160 mm / sec Blade: Urethane 70 Hs, thickness 2.0 mm, free length 10 mm, bite amount 1.0 mm Brush: diameter 19 mm, BPI 1.0 mm, peripheral speed 190
mm / sec, BFI 1.0 mm, development system: reversal development As a result, it was found that the hair collapse had a maximum value between 0 and 45 degrees.

EXAMPLE PP (polypropylene) is used as the insulating fiber, thickness 17d (denier) is 40f (filament), and conductive fiber is B12N (trade name Bertron), and thickness 10d is 32f. A parameter experiment was carried out using the cleaning brush thus prepared, in which the brush collapsed.
The result is shown in FIG. The vertical axis is the copy volume until white streaks appear on the copy and the image quality is impaired, and the horizontal axis is the length of the bristles of the cleaning brush. An experiment was carried out on the above-mentioned example using the following apparatus and conditions. Photoconductor: OPC (organic photoconductor drum) with a diameter of 84 mm, peripheral speed 160 mm / sec Blade: Urethane 70 Hs, thickness 2.0 mm, free length 10 mm, bite amount 1.0 mm Brush: diameter 19 mm, BPI 1.0 mm, peripheral speed 190
mm / sec, BFI 1.0 mm, hair fall 20 ° Development system: reversal development As a result, it was found that the hair length had a maximum value between 6.0 mm and 7.0 mm. Further, the cleaning brushes used in Examples 1 to 4 are, in detail, those obtained by twisting PP of 17d into 40f and making it two.
B12N of d is twisted in 32f, and it is made into 2 pieces. 10,000 pieces / inch ² , 8,000 pieces, respectively
Books / inch ² were used.

An example of the tip force of the cleaning brush 32 will be described below as an example. Example The scraping force of the cleaning brush 32 depends on the strength of the tip of the brush. If this tip force is weak, even if the toner can be removed to some extent, the additive passes through the cleaning brush due to the influence of its particle size. As a result, the ratio of the additive to the toner that rushes into the cleaning blade increases, and the additive accumulates at the tip of the cleaning blade. In this state, when the additive is transferred to the surface of the photosensitive member due to some influence, filming occurs on the surface of the photosensitive member as a starting point and an image defect due to white spots occurs on the copy.

When the tip force of the cleaning brush 32 is too strong, the brush fibers adhere the toner and additives on the surface of the photoconductor to the surface of the photoconductor in the form of filming, and the tip force is weak. Similarly, an image quality defect due to white spots occurs. The cause is considered to be both heat fusion and mechanical addition of the additive into the concave portion on the surface of the photoreceptor.

Therefore, the relationship between the brush tip force of the cleaning brush 32 and the occurrence of white spots on the copy was examined under the following test conditions. Photoconductor: OPC (organic photoconductor) with a diameter of 84 mm, peripheral speed 1
60mm / sec Blade: Polyurethane 70Hs, bite amount 1.2m
m Brush: BPI by mixing insulating fiber (PP (polyethylene) and conductive fiber B12N (Bertlon: trade name)
BPI1.0 with a mixed spinning of 1.0 mm and PFI 1.0 mm
mm, BFI 1.8 mm.

The results of the above test are shown in FIG. In this figure, ◯ does not occur, Δ indicates occurrence on the photoconductor, and x indicates occurrence. As shown in FIG. 14, when the tip force of the cleaning brush 32 is 30 g / 100 mm, there is no image quality defect on the copy, but slight filming occurs on the photoconductor 11. However, it disappears when the number of copies exceeds 3000. Further, even when the tip force of the cleaning brush 32 is 160 g / 100 mm, the above 3
The same phenomenon as at 0 g / 100 mm occurred.

The tip force of the cleaning brush 32 is measured by the device shown in FIGS. 15 (a) and 15 (b). That is, the tip of an aluminum plate 45 having a length of 50 mm and a width of 100 mm fixed at a fulcrum 44 is projected into the cleaning brush 32 having a diameter of 19 mm for 1 mm and the cleaning brush 32 is rotated. Then, the deflection of the aluminum plate 45 at this time was measured and obtained by the load cell 46 fixed to the middle portion thereof.

[0028]

According to the present invention, toner and additives are not accumulated between the brush fibers of the cleaning brush 32 formed by bundling the insulating fibers and the conductive fibers, and the toner is not hardened as a whole. It is possible to satisfactorily remove the above-mentioned additive 1 without damaging the photoreceptor 1.

[Brief description of drawings]

FIG. 1 is a configuration explanatory view showing an example of an image forming apparatus to which the present invention is applied.

FIG. 2 is a sectional view showing an embodiment of a cleaning device in the image forming apparatus according to the present invention.

FIG. 3 is a diagram for explaining the operation of the present invention.

FIG. 4A is an enlarged cross-sectional view of a cleaning brush of the present invention on a base cloth, and FIG. 4B is a development view showing a flocking pattern thereof.

FIG. 5 is a partial front view of the cleaning brush according to the present invention.

FIG. 6 is a development view showing a flocking pattern of a cleaning brush on a base cloth according to another embodiment of the present invention.

FIG. 7 is a partial front view of a cleaning brush according to another embodiment of the present invention.

FIG. 8 is a conceptual diagram showing a bristle inclination angle of a brush fiber.

FIG. 9 is a diagram showing the relationship between the peripheral speed of the cleaning brush and the number of copies until the image quality is impaired.

FIG. 10 is a diagram showing the relationship between BFI and the number of copies until the image quality is impaired.

FIG. 11 is a diagram showing the relationship between BPI and the number of copies until the image quality is impaired.

FIG. 12 is a diagram showing a relationship between a brush bristle inclination angle and the number of copies until the image quality is impaired.

FIG. 13 is a diagram showing the relationship between the brush fiber length and the number of copies until the image quality is impaired.

FIG. 14 is a diagram showing the relationship between the brush tip force and the presence or absence of filming.

15A and 15B show an apparatus for measuring a brush tip force, FIG. 15A is a side view, and FIG. 15B is a plan view.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Automatic document feeder, 2 ... Image forming apparatus, 3 ... Image output part, 4 ... Transfer material supply part, 5 ... Platen glass, 6 ... Imaging unit, 7 ... Wire, 9 ... Drive pulley, 1
0 ... Scanner, 11 ... Photoconductor, 12 ... Charging device, 13 ... Developing device, 14 ... Transfer device, 15 ... Transfer drum, 16 ... Cleaning device, 17 ... Transfer charger, 18 ... Separation discharger, 19 ... Static eliminator for toner charge control, 20 ... peeling nail
21 ... Static eliminator, 22 ... Cleaner, 23 ... Pressing roll, 25 ... Adsorption charger, 27 ... Conveying belt, 31 ... Film seal, 32 ... Cleaning brush, 33 ... Cleaning blade, 34 ... Housing, 35 ... Mounting member, 40 ... Base cloth, 41 ... Shaft.

Claims (5)

[Claims] 1. A cleaning device of an image forming apparatus, wherein a toner image on a drum-shaped or belt-shaped photosensitive member is transferred onto a transfer material, and residual toner after transfer is removed by a cleaning brush 32 and a cleaning blade 33. The cleaning brush 32 is composed of a bundle of insulating fibers and conductive fibers, and the fiber bundle is W-woven with respect to the base cloth 40 with 4 and 3 bundles per 11 mm in the width direction as one unit. A belt-shaped brush member in which flocking is performed in rows and the distance between the fiber bundles in the width direction is 2 to 3 mm, the width of the W weave is 2 to 4 mm, and the distance between the 3 and 4 bundles is 0.5 to 1.5 mm. A cleaning device for an image forming apparatus, wherein the cleaning device is wound around a shaft 41. 2. The width of the base cloth is 10 to 30 mm, and the shaft 41
The cleaning device for an image forming apparatus according to claim 1, wherein the winding pitch around the base is 1.1 to 1.4 times the width of the base cloth. 3. A cleaning device of an image forming apparatus, wherein a toner image on a drum-shaped or belt-shaped photosensitive member is transferred onto a transfer material, and residual toner after transfer is removed by a cleaning brush 32 and a cleaning blade 33. The cleaning brush 32 is composed of a bundle of insulating fibers and conductive fibers, and the fiber bundles are planted in rows in the width direction of the base fabric 40, and the fiber bundles are also planted in rows. Is 5 to 8 bundles per 10 mm, the distance between the rows is t, and the length of the fiber bundle is h, 0.3 ≦ t / h
A cleaning device for an image forming apparatus having a relationship of ≦ 1.0. 4. A cleaning device of an image forming apparatus, wherein a toner image on a drum-shaped or belt-shaped photosensitive member is transferred onto a transfer material, and residual toner after transfer is removed by a cleaning brush 32 and a cleaning blade 33. The cleaning brush 32 is composed of a bundle of insulating fibers and conductive fibers, and the peripheral speed of the cleaning brush 32 is 1.0 to 1.4 times the peripheral speed of the photoconductor, the cleaning brush 32 and the flicker bar 33. Interference amount (BFI) of 0.5 to 1.5 mm, the interference amount (BPI) of the cleaning brush 32 and the photosensitive member is 0.5 to 1.5 mm, and the brush fiber to be transplanted to the base cloth is applied to the cleaning brush 32. A cleaning machine for an image forming apparatus, which is tilted toward the rotation direction at a hair fall angle of 0 to 45 °, and the length of brush fibers is set to 6 to 7 mm. Apparatus. 5. A cleaning device of an image forming apparatus, wherein a toner image on a drum-shaped or belt-shaped photosensitive member is transferred onto a transfer material, and residual toner after transfer is removed by a cleaning brush 32 and a cleaning blade 33. The tip force of the cleaning brush 32 is 30 g / 100 m
A cleaning device for an image forming apparatus, wherein the cleaning amount is in the range of m to 160 g / 100 mm.