JPH05204280A - Positioning mechanism for cleaning device attached to image forming device - Google Patents

Abstract

PURPOSE:To eliminate fear that a photosensitive drum is damaged by a cleaning blade at the time of transporting a copying machine. CONSTITUTION:A housing 21 in which a fur brush and the cleaning blade 40 are housed is fixed at a position close to or separate from the photosensitive drum by positioning a positioning shaft 50. When the shaft 50 is allowed to slide in the case of separating the shaft 50 from the photosensitive drum, an operating member 42 attached to the shaft 50 comes in contact with a turning lever 45, which is turned in a direction where it is separated from the photosensitive drum. The lever 45 is attached to a blade shaft 43 and the cleaning blade 40 attached to the shaft 43 is turned in a direction being separated from the photosensitive drum.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mechanism for positioning a cleaning device, which is mounted on an image forming apparatus such as a copying machine or a printer and used for cleaning a photosensitive drum, on the main body of the image forming apparatus.

[0002]

2. Description of the Related Art In an electrophotographic copying machine, a toner image is formed on a photosensitive drum, and after the toner image is transferred onto a sheet, unnecessary toner adhering to the photosensitive drum is removed by a cleaning device. It is supposed to be removed. Recently, in such a cleaning device, in order to promote the cleaning effect on the surface of the photosensitive drum,
Before the blade is brought into sliding contact with the photosensitive drum to scrape off the toner adhering to the surface of the photosensitive drum, a fur brush is brought into contact with the surface of the photosensitive drum to clean the surface of the photosensitive drum.

In a cleaning device having such a blade and a fur brush, the surface of the photoconductor drum is protected so as not to damage the surface of the photoconductor drum when the copier is not operated as during transportation or storage of the photocopier. It is necessary to keep the blade and fur brush away from.
Therefore, the entire cleaning device is moved and fixed so as to be separated from the photosensitive drum.

[0004]

In a cleaning device having a blade and a fur brush, when fixing the entire cleaning device away from the photosensitive drum, the mechanism for moving the entire cleaning device becomes complicated. Moreover, it is not easy to fix it at a predetermined position. Further, since the power for rotating the fur brush is transmitted to the drive system of the copying machine main body through the gear, in this case, the gear may not mesh accurately.

The present invention solves such a problem, and an object thereof is to provide a cleaning device capable of separating the blade and the fur brush from the outer peripheral surface of the photosensitive drum with a simple structure. is there.

[0006]

SUMMARY OF THE INVENTION A cleaning device of the present invention comprises a housing whose upper portion is supported by a support shaft parallel to the photosensitive drum so as to be rotatable about the support shaft with respect to the main body of the image forming apparatus. A blade shaft that is installed in parallel with the photosensitive drum in the housing, and is rotatably supported with respect to the housing, and is attached to the blade shaft so as to face the peripheral surface of the photosensitive drum. A cleaning blade, the blades are arranged in parallel in the circumferential direction of the photosensitive drum in parallel, and a brush member disposed in the housing so as to rotate integrally with the housing; Positioning means for positioning the housing at a position close to the photosensitive drum and at a position away from the photosensitive drum, and the housing moves the photosensitive drum from the photosensitive drum by the positioning means. In positioning the position, and moving means for moving the blade shaft away from the photosensitive drum, which comprises a, the object is achieved.

[0007]

In the positioning mechanism of the cleaning device of the present invention, the housing is rotated and positioned by the positioning means to a position close to and away from the photosensitive drum, and the rotation of the housing causes the cleaning blade and the brush member to move. The state of being separated from the photosensitive drum and the state of being in contact with the photosensitive drum. Then, when the housing is separated from the photosensitive drum by the positioning unit, the blade shaft supporting the cleaning blade is rotated by the blade moving unit to position the cleaning blade at a position further separated from the photosensitive drum. It

[0008]

EXAMPLES Examples of the present invention will be described below. The cleaning device of the present invention is used by being mounted on, for example, an electrophotographic copying machine. This cleaning device is shown in FIG.
As shown in FIG. 3, the housing 21 is provided in the vicinity of the photosensitive drum 10 that rotates in the direction indicated by the arrow A.
The housing 21 has an opening 21 facing the photoconductor drum 10.
The opening 21a has an upper portion, and the upper portion of the opening portion 21a is covered with a cover 24 that is detachable from the housing 21.

Inside the housing 21, a cleaning blade 40 extending from below the cover 24 in the opening 21a and in sliding contact with the surface of the photosensitive drum 10, and an upstream side of the cleaning blade 40 in the rotating direction of the photosensitive drum 10 are provided. And a fur brush 30 for rolling contact with. Photoconductor drum 10
The toner image is formed on the surface of the fur brush 30 and the cleaning blade 40 in the cleaning device of the present invention after the toner image is transferred. Therefore,
The surface is cleaned. A soft receiving blade (not shown) is provided below the fur brush 30 so as to cover the lower portion of the opening of the housing 21, and the toner removed by the cleaning blade 40 and the fur brush 30 is received by the receiving blade. It is dropped into the housing 21 by the blade.

The housing 21 is supported by the main body of the copying machine by a support shaft 15 provided at the upper end thereof. The support shaft 15 is parallel to the photosensitive drum 10 and is inserted through the upper end of the housing 21. Each end of the support shaft 15 extends from the housing 21, and a portion extending to the front side of the main body of the copying machine is a fixed plate fixed to the main body of the copying machine.
A screw 16 is rotatably supported by 20. Also,
An end portion of the support shaft 15 extending toward the back side of the copying machine body is supported by a rear side plate 29 (see FIG. 3) of the copying machine body.

In the middle of each fixed plate 20, each support shaft
A pair of elongated holes 17a and 17b extending along the circumference centered on the axial center position of 15 are formed, respectively.
Screws 18a and 18b attached to the side surface of the housing are slidably fitted in the long holes 17a located on the far side of the photoconductor drum 10 along the long holes 17a and 17b, respectively.

A fur brush 30 installed in the housing 21 in parallel with the photosensitive drum 10 is provided with a rotary shaft 31 at its axial center, and each end of the rotary shaft 31 is provided on each side surface of the housing 21. Supported by. Each end of the rotary shaft 31 is inserted through each side of the housing 21, the front end of the main body of the copying machine is supported by the fixed plate 20, and the opposite end is as shown in FIG. It is supported by the rear plate 29. The surface of the fur brush 30 can be brought into rolling contact with the surface of the photosensitive drum 10.

Housing beneath fur brush 30
Fur brush 30 and cleaning blade in 21
A spiral conveyor 34 that conveys the toner removed by 40 in the axial direction of the fur brush 30 is provided.
An end portion of the spiral conveyor 34 on the front side of the copying machine body is supported by a stopper portion 42b of an operation member 42 described later. The opposite end of the spiral conveyor is connected to a discharge pipe 33 that passes through the rear plate 29.

Above the fur brush 30, there is a photosensitive drum.
A cleaning blade 40 is provided which extends over substantially the entire axial length of the blade 10. The cleaning blade 40
2 is connected to a blade shaft 43 supported in the housing 21 by a bracket 48 and a blade receiver 44, as shown in FIGS. The bracket 48 has an L-shaped cross section that covers the far side and the lower side of the photosensitive drum 10 on the blade shaft 43, and extends over almost the entire area of the blade shaft 43. The blade receiver 44 has a mounting plate 44a that substantially entirely contacts the portion of the bracket 48 that covers the lower side of the blade shaft 43, and the photosensitive drum 10 in a substantially vertical state from the side edge of the mounting plate 44a on the photosensitive drum side. Support plate 44b extending to the side, the cleaning blade 4 on the support plate 44b.
0 is attached.

As shown in FIG. 2, the blade receiver 44 is fixed to the bracket 48 by attaching a central portion of the support plate 44a in the longitudinal direction to a central portion of the bracket 48 in the longitudinal direction by a bolt 49. The bracket
A base end portion of an arm member 47 extending toward the far side of the photoconductor drum 10 is attached from a central portion in the longitudinal direction of 48, and a weight 46 is attached to a tip end portion of the arm member 47. The weight 46 urges the cleaning blade 40 toward the photoconductor drum side about the blade shaft 43, and the photoconductor drum of the bracket 48 attached to the blade shaft 43.
The side edge extending toward the 10 side is the opening 21a of the housing 21.
It is in contact with the cover 24 that covers the upper part. As a result, the tip portion of the cleaning blade 40 is brought into pressure contact with the surface of the photoconductor drum 10 by a predetermined pressure contact force.

On the front side of the main body of the copying machine, the end of the blade shaft 43 extends outward from the housing 21 and is located between the housing 21 and the fixed plate 20. A rotating lever 45 is attached to an end portion of the blade shaft 43 located outside the housing 21. The rotation lever 45 has a long plate shape, and one end thereof is attached to the upper portion of the blade shaft 43. The rotating lever 45 extends from the blade shaft 43 to the far side of the photosensitive drum 10 in a substantially horizontal state,
It is bent downward, and its tip is bent toward the photoconductor drum 10 side, and its tip is an engaging portion 45a. As shown in FIG. 4, the engaging portion 45a is notched at the front end on the housing 21 side.

Below the engaging portion 45a of the rotating lever 45,
A positioning shaft 50 that is inserted in the housing 21 in a horizontal state is provided. The positioning shaft 50 is slidable in the axial direction with respect to the housing 21.
An operation member 42, which is in a substantially vertical state in proximity to the turning lever 45, is attached to the 50. The operating member 42 has a flat plate-shaped main body portion 42a adhered to the photosensitive drum 10 side portion of the positioning shaft 50, and is perpendicular to the main body portion 42a on the far side of the housing 21 of the main body portion 42a. Stopper part 42b,
An action portion 42c bent in an inclined state toward the photoconductor drum 10 above the portion of the main body portion 42a adhered to the positioning shaft 50.
And have. The stopper portion 42b is located outside the fixed plate 20. In the main body portion 42a, a portion to which the action portion 42c is connected extends upward, and a concave portion is provided in the fixed plate 20 side portion, and the lower end portion of the fixed plate 20 is located in the concave portion. ing. The action portion 42c is located on the side of the engaging portion 45a of the rotating lever 45 on the side of the housing 21.
The fixed plate 20 side portion of 2c is the photosensitive drum 10 side and the fixed plate.
The inclined portion extends toward the 20 side, and the inclined portion is engaged with the engaging portion of the rotating lever 45 by sliding the positioning shaft 50 in the direction opposite to the direction shown by the arrow B in FIG. It engages with the notched portion of 45a. And
Further, as the positioning shaft 50 is slid in the same direction, the acting portion 42c of the operating member 42 causes the engaging portion 4c of the turning lever 45 to move.
It abuts against 5a and pushes up the engaging portion 45a. As a result, the blade shaft 43 to which the rotating lever 45 is attached is rotated.

Since the lower end of the fixed plate 20 is located in the recess provided in the upper portion of the main body 42a of the operating member 42, the axial sliding of the positioning shaft 50 is limited by the recess. It

The positioning shaft 50 has a small-diameter portion 56 in which the front side portion of the operating member 42 has a smaller diameter than the diameter of the main portion of the positioning shaft 50 facing the photosensitive drum 10.
Outside the small diameter portion 56, a medium diameter portion 55 having a diameter smaller than the portion of the positioning shaft 50 facing the photoconductor drum 10 and larger than the small diameter portion 56 is continuously provided. The medium diameter part
The front end of 56 is a large-diameter portion 58 having the same diameter as the main portion of the positioning shaft 50. Positioning axis 50
The other end portion on the back surface side is a tapered portion 50b whose diameter is gradually reduced toward the end surface side.

As shown in FIG. 1, the fixed plate 20 is provided with a positioning hole 22 through which the end of the positioning shaft 50 is inserted, and the rear plate 29 of the main body of the copying machine also has the other positioning shaft 50. Is formed with a positioning hole 23 through which the end portion of is inserted. As shown in FIG. 5, the positioning hole 22 provided in the fixed plate 20 has a diameter of a main portion and a large diameter portion 58 of the positioning shaft 50 so that the entire positioning shaft 50 can be inserted into the photosensitive drum 10 side. Has a circular large-diameter hole portion 25 having a diameter substantially equal to, the far side of the photosensitive drum 10, the diameter of the intermediate diameter portion 55 so that the intermediate diameter portion 55 of the positioning shaft 50 is inserted. It has a medium diameter hole portion 26 set to have substantially the same diameter. Then, between the large diameter hole portion 25 and the medium diameter hole portion 26, the large diameter hole portion 25 and the medium diameter hole portion
A communication portion 27 that communicates with 26 is provided. The communicating portion 27 is spaced so that the small diameter portion 56 of the positioning shaft 50 can pass through.

As shown in FIG. 6, the positioning hole 23 provided in the rear side plate 29 of the main body of the copying machine is inserted from the taper portion 50b at the end portion of the positioning shaft 50 so that the positioning shaft 5 can be inserted.
It has two fitting holes 23a and 23b having a diameter substantially equal to the maximum diameter of the positioning shaft 50 so that 0 can be inserted therethrough. The fitting holes 23a are arranged side by side in a direction in which they come into contact with and separate from the photoconductor drum 10, and both of them are in communication with each other by a communication portion having an interval smaller than the diameter of each fitting hole 23a.

At the rear end of the positioning shaft 50,
As shown in FIG. 3, an idle gear 51 is rotatably fitted. The idle gear 51 is rotated by meshing with an input gear (not shown) to which power from the drive source of the copying machine main body is transmitted. The idle gear 51 is urged toward the back side of the copying machine body by a push spring 57 fitted to the positioning shaft 50. A passive gear 52 fixed to the end of the rotary shaft 31 of the fur brush 30 meshes with the idle gear 51, and the rotary gear 31 is rotationally driven by the passive gear 52. As shown in FIG. 1, an intermediate gear 53 is fixed to the end of the rotary shaft 31 opposite to the end to which the passive gear 52 is attached.
It meshes with the transmission gear 54 fixed to the above-mentioned spiral conveyor 34. Therefore, the rotation of the rotary shaft 31 is transmitted to the spiral conveyor 34 so that the spiral conveyor 34 is rotated.

In the cleaning device having such a structure, when the copying machine is usable, the entire positioning shaft 50 is moved to the front side as shown in FIG.
The state where 50b can move in the communication part between the fitting holes 23a and 23b of the positioning hole 23 in the fixed plate 20 on the back side is set. In this case, the small diameter portion 56 of the positioning shaft 50 is located in the positioning hole 22 provided in the fixed plate 20 on the front side of the copying machine body. Then, the small-diameter portion 56 is located in the large-diameter hole portion 25 of the positioning hole 22, and the taper portion 50b on the rear surface side of the positioning shaft 50 is fitted to the photosensitive drum 10 side in the rear surface-side positioning hole 23. It is located in the hole 23a. In such a state, the positioning shaft 50 is moved to the back side, the tapered portion 50b is inserted through the fitting hole 23a of the positioning hole 23 on the back side, and the positioning shaft 50 has an intermediate diameter at the front end. The large diameter portion 58 adjacent to the portion 55 is positioned in the large diameter hole portion 25 of the positioning hole 22, and the positioning shaft 50 is positioned in the large diameter hole portion 25. As a result, the housing 21 supported by the support shaft 15 is positioned in a position close to the photoconductor drum 10 where the fur brush 30 is pressed against the photoconductor drum 10.

At this time, the operating portion 42c of the operating member 42 attached to the positioning shaft 50 does not contact the engaging portion 45a of the rotating lever 45, as shown in FIG.
Is rotated by a weight 46. And the blade shaft 43
The side edge portion of the bracket 48 attached to the photosensitive drum 10 side is in contact with the cover 24 of the housing 21,
The tip of the cleaning blade 40 is pressed against the surface of the photosensitive drum 10.

Further, in such a state, the positioning shaft 50
The idle gear 51 provided on the back side of the copying machine main body is pressed by the pressing spring 57, and the rotary shaft of the fur brush 30 is rotated.
When the idle gear 51, which is in a state of meshing with the passive gear 52 provided in the gear 31, is transmitted from the main body of the copying machine to the rotating shaft 31, the fur brush 30 is rotated and the rotating shaft is rotated. It is transmitted to the spiral conveyor 34 via the intermediate gear 53 attached to the 31 and the transmission gear 54 meshing with the intermediate gear 53, and the spiral conveyor 34
34 is driven to rotate. At this time, since each end of the positioning shaft 50 is positioned by the positioning hole 22 of the fixed plate 20 and the positioning hole 23 of the rear plate 29, respectively, the idle gear 51 and the input gear provided in the copying machine main body are The inter-axle distance becomes a predetermined state, and uneven rotation of the idle gear 51 is suppressed.

As described above, since the cleaning blade 40 is pressed against the photosensitive drum 10 and the fur brush 30 is pressed against the photosensitive drum 10 to be rotationally driven, the surface of the rotating photosensitive drum 10 is Cleaning is performed by rolling contact of the fur brush 30 that is rotationally driven and by sliding contact of the cleaning blade 40.

On the other hand, when the copying machine is transported or stored, the positioning shaft 50 is pulled toward the front side of the copying machine main body to taper the end of the positioning shaft 50 on the rear side of the copying machine. Position the hole 50b in the rear plate 29
It is located in the fitting hole 23a. At this time, the positioning axis 50
Of the positioning shaft 50 by contacting the side edge of the recess provided in the main body 42a of the operating member 42 provided on the front side of the positioning shaft 50.
Is prevented, and there is no risk that the tapered portion 50b provided at the rear end of the positioning shaft 50 will come out of the positioning hole 23. Then, the small diameter portion 56 of the positioning shaft 50,
It is located in the positioning hole 22 in the fixed plate 20 on the front side.

In such a state, the small diameter portion of the positioning shaft 50
The positioning shaft 50 is moved in a direction away from the photoconductor drum 10 so that 55 passes through the communication portion 27 of the positioning hole 22. Then, when the small diameter portion 55 passes through the communicating portion 27 of the positioning hole 22 and is positioned in the medium diameter hole portion 26 of the positioning hole 22, the taper portion 50b at the other end of the positioning shaft 50 moves to the copying machine. The positioning hole 23 of the fixing plate 20 on the rear surface side of the main body is located in the fitting hole 23b on the far side of the photosensitive drum 10. In such a state, when the positioning shaft 50 is pulled to the front side, the acting portion 42c of the operation member 42 attached to the positioning shaft 50 is
As shown in FIG. 7, after the notch of the engaging portion 45a of the rotating lever 45 is contacted, the engaging portion 45a of the lever 45 rides on the acting portion 42c of the operating member 42. As a result, the engagement lever 45 moves against the gravity of the weight 46 and the blade shaft 43
Is rotated in the direction away from the photosensitive drum, and the tip of the cleaning blade 40 attached to the blade shaft 43 via the bracket 48 is separated from the surface of the photosensitive drum 10 as shown in FIG. It becomes a state. Then, when the medium diameter portion 55 of the positioning shaft 50 is positioned and positioned in the medium diameter hole portion 26 of the positioning hole 22 which is located away from the photosensitive drum 10, the engaging portion 45a of the turning lever 45 is moved. The operating member 42 is positioned while riding on the acting portion 42c.

In this way, the positioning shaft 50 is positioned in the portion of each of the positioning holes 22 and 23 away from the photoconductor drum 10, so that each of the screws 18a and 18b has each of the elongated holes.
It moves in a direction away from the photoconductor drum 10 along 17a and 17b, and the entire housing 21 is rotated together with the blade shaft 43 around the support shaft 15 in a direction away from the photoconductor drum 10. As a result, the fur brush 30 supported in the housing 21 is separated from the photosensitive drum 10.

The medium diameter portion 55 of the positioning shaft 50 is fixed to the fixed plate 20.
When positioned in the medium-diameter hole portion 26 of the positioning hole 22 of the idle gear 51 attached to the positioning shaft 50.
The meshing between the idle gear 51 and the passive gear 52 is released, and there is no possibility that power is transmitted to the passive gear 52.

In this state, when the cleaning blade is to be replaced, the entire cleaning device is removed from the main body of the copying machine, and the opening 21 of the housing 21 is removed.
The cover 24 covering the upper part of a is removed. Then, the positioning shaft 50 is slid to the rear side so that the large diameter portion 58 of the positioning shaft 50 is positioned inside the large diameter portion 25 of the positioning hole 22 of the fixed plate 20. As a result, the acting portion 42c of the operating member 42 attached to the positioning shaft 50 is not in contact with the engaging portion 45a of the turning lever 45, as shown in FIG. It is rotated by 46. The blade shaft 43 is rotated by the rotation of the rotation lever 45. In this case, since the cover 24 of the housing 21 is removed, the weight 46 is rotated by the action of gravity. 45 and the blade shaft 43 are rotated to the position shown in FIG. As a result, the cleaning blade 40 attached to the blade shaft 43 via the bracket 48 is exposed to the outside through the opening 21a of the housing 21. Then, when the entire housing 21 is tilted down so that the opening 21a faces upward, a bolt for mounting the blade receiver 44 with the cleaning blade 40 attached to the bracket 48.
The cleaning blade 40 is replaced by visually recognizing 49 from above and removing the bolt 49 with a screwdriver.

When the copying machine equipped with such a cleaning device is not used, when the image forming operation is started, the cleaning blade 40 is not slidably brought into direct contact with the peripheral surface of the photosensitive drum 10 so as to prevent bending or the like. To prevent
Toner is attached to the cleaning blade 40. When the toner is attached to the cleaning blade 40, first, each end of the positioning shaft 50 is located on the far side of the photoconductor drum of the positioning holes 22 and 23 so that the housing 21 is located far from the photoconductor drum 10. Medium-diameter hole 26 and fitting hole 23
Located in b respectively. In such a state, the copying machine is operated to attach the toner to the entire surface of the photosensitive drum 10.

Thereafter, as shown in FIG. 1, the ends of the positioning shaft 50 are connected to the large diameter portions of the positioning holes 22 and 23 so that the cleaning blade 40 and the fur brush 30 come into contact with the photosensitive drum 10. Also, the large diameter portion 58 of the positioning shaft 50 is positioned inside the fitting hole 23a, and the large diameter portion 58 of the positioning shaft 50 is positioned inside the large diameter portion of the positioning hole 22. As a result, the action portion 42c of the operation member 42 attached to the positioning shaft 50 is
The blade shaft 43 is rotated by the weight 46 so that it does not come into contact with the engaging portion 45a of the rotating lever 45. Then, the side edge of the bracket 48 attached to the blade shaft 43 on the side of the photosensitive drum 10 is in contact with the cover 24 of the housing 21, and the tip of the cleaning blade 40 is pressed against the surface of the photosensitive drum 10. It When the photosensitive drum 10 is rotated again in such a state, the photosensitive drum 10 facing between the cleaning blade 40 and the fur brush 30 is rotated.
10 The toner attached to the surface adheres to the cleaning blade 40 when it is scraped off by the cleaning blade 40. Toner that adheres to the other surface of the photoconductor drum 10 is the fur brush 30 and the cleaning blade 40.
Are removed from the surface of the photoconductor drum 10. In this way, the toner is attached to the cleaning blade 40,
After that, the photosensitive drum 10 is smoothly cleaned by the cleaning blade 40.

[0034]

According to the positioning mechanism of the cleaning device of the present invention, there is no possibility of damaging the photosensitive drum by the cleaning blade when it is not necessary to use the image forming device.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a cleaning device of the present invention.

FIG. 2 is a front view of a positioning mechanism provided in the cleaning device.

FIG. 3 is a perspective view of a main part of the cleaning device.

FIG. 4 is a side view of a positioning mechanism provided in the cleaning device from the photosensitive drum side.

FIG. 5 is an explanatory view of a positioning hole used for a front side fixing plate provided in a positioning mechanism of the cleaning device.

FIG. 6 is an explanatory view of a positioning hole used for a side plate on a rear surface side provided on a positioning mechanism of the cleaning device.

FIG. 7 is a side view of the positioning mechanism for explaining the operation of the positioning mechanism of the cleaning device.

FIG. 8 is a front view of the positioning mechanism in that case.

FIG. 9 is a front view of the positioning mechanism for explaining still another operation of the positioning mechanism of the cleaning device.

[Explanation of symbols]

 10 Photoconductor drum 20 Fixed plate 21 Housing 22 Positioning hole 23 Positioning hole 25 Large diameter part 26 Medium diameter part 30 Fur brush 40 Cleaning blade 43 Blade shaft 44 Blade receiver 45 Rotating lever 46 Weight 48 Bracket 50 Positioning shaft 56 Small diameter part 55 Medium diameter part 58 Large diameter part

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshimitsu Takeuchi 1-228 Tamatsukuri, Chuo-ku, Osaka Mita Engineering Co., Ltd.

Claims (1)

[Claims] 1. A housing having an upper portion rotatably supported by a support shaft parallel to the photosensitive drum with respect to the main body of the image forming apparatus, and a housing parallel to the photosensitive drum and inside the housing. A blade shaft rotatably supported with respect to the housing, a cleaning blade attached to the blade shaft so as to face the peripheral surface of the photoconductor drum, and the blade. Brush members that are arranged in parallel in the circumferential direction of the drum and that are arranged in the housing so as to rotate integrally with the housing; a position where the housing is close to the photosensitive drum; Positioning means for positioning at a position away from the photosensitive drum, and the breaker for positioning the housing at a position away from the photosensitive drum by the positioning means. Positioning mechanism of the cleaning apparatus comprising a moving means for moving the shaft away from the photosensitive drum, a.