JPH09160468A - Photoreceptor unit of image forming device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a trouble caused by rolling in a cleaning blade when a photoreceptor is new and a deterioration caused by rubbing of the cleaning blade by transferring a lubricant applied to the contact surface of a protective sheet with the photoreceptor on the surface of the photoreceptor at the time of peeling and removing the protective sheet from the photoreceptor. SOLUTION: This photoreceptor unit 0 is provided with the photoreceptor 1, a unit case rotatably supporting the photoreceptor 1, the protective sheet 2 with which the surface of the photoreceptor 1 is coated through the lubricant 3, a peeling means 4 protecting the photoreceptor 1 and having a fixed tape 4d being a handhold in the case of peeling the sheet 2, and rollers 6, 7B and 6B stretching the photoreceptor 1 turnably in a direction shown by arrow A. The lubricant 3 applied to the contact surface of the sheet 2 with which the outer periphery of the photoreceptor 1 is covered from the time immediately after the photoreceptor 1 is produced till it is attached to an image forming device with the photoreceptor 1 is transferred to the surface of the photoreceptor 1 when the sheet 2 is peeled and removed from the photoreceptor 1 by the peeling means 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image forming apparatus such as an electrophotographic copying machine, a facsimile, a printer, a scanner, or a multi-function peripheral having these functions, and more particularly, it can be attached to and detached from the main body of the apparatus. The present invention relates to improvement of a photosensitive unit.

[0002]

2. Description of the Related Art A photoconductor portion of an image forming apparatus is replaced due to electrical fatigue caused by repeated charging, exposure and static elimination, and mechanical fatigue caused by rubbing against a recording paper in each process of development, cleaning and transfer. In order to facilitate this replacement work, the photoconductor is made independent as a photoconductor unit and is detachably attached to the apparatus main body. Also,
Not only the photoconductor unit but also peripheral process components such as a cleaning device and a transfer unit are made into a cartridge so that the unit can be attached / detached and replaced. However, in order to reduce the running cost per sheet of recording paper, it is necessary to keep the price as low as possible by limiting the constituent elements that are replacement parts. Further, the photoconductor unit in which only the photoconductor of the image forming apparatus is unitized is
Since the surface of the photosensitive member is exposed after manufacturing, the exposed surface is protected by a protective member such as a cover for light shielding and scratch prevention. For example, in the photoconductor cartridge,
In order to shield the exposed surface of the photoconductor, especially the part corresponding to the transfer part and the developing part, cover the entire photoconductor with a movable light-shielding cover made of resin to prevent photodegradation of the photoconductor. The technology described above is known (Japanese Patent Laid-Open No. 61-260).
264).

Further, by providing a photosensitive drum cover made of a resin material and a moving rail for guiding the photosensitive drum cover, the photosensitive drum cover is sealed by the photosensitive drum cover so as to prevent damage due to an external impact or light. There is also known a technique for protecting the photosensitive drum from exposure to light (see Japanese Patent Laid-Open No. 3-80285). Also,
A technique is also known in which a removable protective sheet that covers the belt-shaped photoconductor is wound around the image forming unit while also covering the conveyance path of the recording paper so as to protect the belt-shaped photoconductor. (See the publication of Kaihei 5-232751). However, in these conventional examples, a cover or the like that covers the photoconductor for shielding light and preventing scratches causes an increase in cost, or the cleaning blade is rubbed between the photoconductor and the cleaning blade when it is new. There are problems such as deterioration due to wear, and a trouble that the cleaning blade is caught when the cleaning blade is wound on the contact surface with the photosensitive body when the photosensitive body is new.

[0004]

In the conventional photoconductor unit of the image forming apparatus described above, a cover for covering the photoconductor in order to shield the photoconductor and prevent scratches causes an increase in cost, or a new photoconductor is used. At the same time, there is a problem that the cleaning blade is deteriorated due to rubbing against the photoconductor, or a trouble occurs that the cleaning blade is caught in the contact surface with the photoconductor when the photoconductor is new. Therefore, the present invention solves such a problem. That is, it is an object of the present invention to provide a photoconductor unit for an image forming apparatus, which is excellent in operability and can be manufactured at a low cost while preventing the trouble of the cleaning blade from being caught when the photoconductor is new and deterioration due to rubbing.

[0005]

In order to achieve the above object, the present invention according to claim 1 is a photosensitive member unit which is detachably mountable to an image forming apparatus and is rotatably held to form an image. Body, a protective sheet covering the outer periphery of the photoconductor, a lubricant applied to the contact surface of the protective sheet with the photoconductor, and the protective sheet by transferring the lubricant to the surface of the photoconductor The most main feature is that it is a photoconductor unit of an image forming apparatus having a peeling means for peeling it from the photoconductor. A second aspect of the present invention is characterized in that, in the photoconductor unit of the image forming apparatus according to the first aspect, the protective sheet is a black paper. According to a third aspect of the present invention, in the photoconductor unit of the image forming apparatus according to the first or second aspect, the lubricant is applied to a portion of the surface of the photoconductor that is in contact with the cleaning blade during mounting. What is done is the main feature. According to a fourth aspect of the present invention, in the photoconductor unit of the image forming apparatus according to the first, second or third aspect, the peeling unit has a winding member that winds up the protective sheet. And According to a fifth aspect of the present invention, in the photoreceptor unit of the image forming apparatus according to the first, second, third, or fourth aspect, the peeling unit includes a pressing member that presses the protective sheet against the photoreceptor. Is the main feature. A sixth aspect of the present invention is characterized in that, in the photoconductor unit of the image forming apparatus according to the fifth aspect, the pressing member is a pressure roller which can be pressure-bonded and rotated.

[0006]

According to the present invention, in the photosensitive member unit of the image forming apparatus, the photosensitive member is a protective sheet which covers the outer periphery of the photosensitive member immediately after production and before being mounted in the image forming apparatus. The lubricant applied to the contact surface with is transferred to the surface of the photoconductor when the protective sheet is peeled off and removed from the photoconductor by the peeling means. Also, it is possible to provide a photosensitive member unit of an image forming apparatus which is excellent in operability and which is capable of preventing deterioration due to rubbing.
According to a second aspect of the present invention, the lubricant applied to the contact surface of the protective sheet made of black paper covering the outer periphery of the photoconductor from immediately after production to the time when the photoconductor is attached to the image forming apparatus is exposed by the peeling means. When the protective sheet is peeled off and removed from the body, it is transferred to the surface of the photoconductor, so it prevents damage to the cleaning blade when the photoconductor is new and deterioration due to rubbing. It is possible to provide a low-cost photoconductor unit of an image forming apparatus.

According to a third aspect of the present invention, the outer periphery of the photoconductor from immediately after production until it is mounted on the image forming apparatus is applied only to the minimum necessary contact surface of the contact surfaces of the protective sheet with the photoconductor. Since the lubricant is transferred to the surface of the photoconductor when the protective sheet is peeled off and removed from the photoconductor by the peeling means, deterioration of the cleaning blade when the photoconductor is new and deterioration due to rubbing is obviated. It is possible to provide a photoconductor unit of an image forming apparatus that is excellent in operability and is low in cost while being prevented. According to a fourth aspect of the present invention, the lubricant applied to the contact surface of the protective sheet covering the outer periphery of the photosensitive member with the photosensitive member from immediately after production until the photosensitive member is mounted on the image forming apparatus is exposed by the winding member of the peeling unit. When the protective sheet is peeled off from the body and transferred to the surface of the photoconductor, the cleaning blade is prevented from being caught when the photoconductor is new and deterioration due to rubbing is prevented. It is possible to provide a photoconductor unit of an image forming apparatus that is excellent in operability such that a lubricant does not adhere to clothes or the like of workers.

According to a fifth aspect of the present invention, the lubricant applied to the contact surface of the protective sheet covering the outer periphery of the photosensitive member from the back surface of the protective sheet covering the outer periphery of the photosensitive member from immediately after production until mounting on the image forming apparatus. Since the protective sheet is transferred to the surface of the photoconductor when the protective sheet is peeled off from the photoconductor by the peeling means having a pressing member that is pressed against the photoconductor, it is possible to prevent the cleaning blade from being caught in the photoconductor and rubbing it. It is possible to provide a photoreceptor unit of an image forming apparatus which is excellent in operability such as preventing deterioration in advance and promoting adhesion of a lubricant to the surface of the photoreceptor.
In claim 6, the lubricant applied to the contact surface of the protective sheet covering the outer periphery of the photosensitive member with the photosensitive member from immediately after the production until the photosensitive member is mounted on the image forming apparatus is transferred from the back surface to the photosensitive member. Since the protective sheet is transferred to the surface of the photoconductor when the protective sheet is peeled and removed from the photoconductor by the peeling means having a pressing pressure roller, the cleaning blade is not caught when the photoconductor is new and deterioration due to rubbing is caused. It is possible to provide a photoconductor unit of an image forming apparatus which is excellent in operability such as preventing the above-mentioned and further promoting adhesion of the lubricant to the surface of the photoconductor.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a vertical sectional view showing a schematic configuration of a photoconductor unit 0 according to the first embodiment of the present invention. The photoconductor unit 0 includes a photoconductor 1 including a photoconductor drum or a photoconductor belt, a unit case that rotatably supports the photoconductor 1, and a protective sheet 2 attached to the surface of the photoconductor 1 via a lubricant 3. And a peeling means 4 having a fixing tape 4d that protects the photoreceptor 1 and serves as a clue when peeling the protective sheet 2, and a roller that stretches the photoreceptor belt 1 rotatably in the direction of arrow A shown in the drawing. 6, 6A, and 6B. Similar to an ordinary electrophotographic image forming apparatus, after an electrostatic latent image is formed on the outer peripheral surface 1a of the photoconductor 1, it is visualized with toner, and this visualized image is transferred and fixed on a recording paper. By doing so, image formation is performed. The surface 1a of the photoconductor 1 is provided with a
The contact surface with the photoconductor 1 is covered with a protective sheet 2 coated with a lubricant 3. The protection sheet 2 is made of black paper for cost reduction and light shielding. Lubricant 3 above
For example, a material such as zinc stearate or Kainer of polyvinylidene fluoride resin is used. This material is diluted with alcohol at a ratio of 1: 8, and is thinly applied to the protective sheet 2 with a brush or spray. It is easy to take afterwards, and moreover, it is easily attached to the surface 1a of the photoconductor. In the protect cover 4c as the peeling unit 4 in the photosensitive unit 0a of the photosensitive unit 0, one end of the protective sheet 2 is fixed by a fixing tape 4d, and the fixing tape 4d is pulled out in the direction of arrow B shown in the drawing. While the lubricant 3 is being transferred from the protective tape 2 side to the surface 1a of the photoconductor 1, the protective sheet 2 can be easily peeled off from the surface 1a of the photoconductor 1. A cleaning facing roller 6 is provided at a position where the cleaning blade 5 (not shown) comes into contact with the surface of the photoreceptor.
The protection cover 4c is detachably attached to the shaft 6a of the cleaning facing roller 6.

FIG. 2 is a sectional view of an example of an image forming apparatus in which the photoconductor unit 0 is mounted. The surface 1a of the photoconductor 1 of the photoconductor unit 0 is precharged by the charger 7 and then exposed. LD writing is performed at 8 to form an electrostatic latent image. Surface 1a of photoconductor 1
The electrostatic latent image formed on the CTM (CleanerTo
toner replenishment tank 9a
The toner 10 is supplied from the developing device 11 and is passed through a developing device 11 to be developed into a toner image, which is visualized. The recording sheet 13 placed and stored in the sheet feeding cassette 12 is timed to match the transfer charger. The toner image conveyed to the position 14 and transferred, and then transferred to the recording paper 13 is fixed by being passed between the fixing roller 15a and the pressure roller 15b having a heater inside the fixing device 15 and being sandwiched therebetween. It is designed to be ejected and stored. On the other hand, the residual toner remaining on the surface 1a of the photoreceptor 1 is scraped off by the cleaning blade 5 and the waste toner 10a is removed.
As a result, the waste toner is collected in the waste toner collecting tank 9b of the CTM 9, and the residual charge is discharged by irradiating light with the discharging lamp 16 to prepare for the next image forming step.

FIG. 3 is an external perspective view of the image forming apparatus. The photoconductor unit 0, which holds the photoconductor 1 of the photoconductor belt, is attached / detached in the direction of arrow C in the figure and in the direction of arrow D in the figure. Like the CTM 9, it can be attached and detached inside the main body of the image forming apparatus. The CTM 9 is a toner 10 not shown.
Will be replaced when the replenishment is completed, but since the photoconductor unit 0 has a longer life than the CTM9, the photoconductor unit 0 is replaced.
If the CTM9 and the above CTM9 are exchanged separately, the running cost per copy sheet can be reduced, and since the CTM9, which has an earlier exchange time, is installed on the upper stage of the photoconductor unit 0, the operability of the exchange work is good. .

FIG. 4 is a diagram showing a procedure for mounting the photoconductor unit 0a in the image forming apparatus. In FIG. 4A, the front cover 17 of the image forming apparatus is indicated by an arrow E.
Rotate in the direction to open. In FIG. 4B, the photoconductor unit 0a is inserted into the image forming apparatus in the direction of the arrow D shown while holding the knob 4A. In FIG. 4C, the fixing bracket 18 provided on the side wall of the housing is installed in the direction of arrow E shown, and the set screw 19 is screwed in the direction of arrow F shown to fix the photoconductor unit 0a. The photoconductor unit 0a is fixed by a fixing bracket 18 so as to be rotatable and non-removable. Subsequently, FIG.
In peeling off the protect cover 4c of the photoconductor unit 0a, first, the unit 0 is rotated in the direction of the arrow G shown, and then the knob 4A is lifted in the direction of the arrow H shown while holding the knob 4A. Pull out the protect cover from the shaft 6a of the roller 6. As shown in the drawing of FIG. 5E, the lubricant 3 on the protective sheet 2 is lifted after rotating the protect cover 4c and pulled out in the direction of the arrow I shown in the drawing. The surface 1a of the photoconductor 1 is rubbed to transfer and adhere to the surface 1a of the photoconductor 1.

FIG. 6 is a vertical sectional view of a photosensitive unit 0b according to a second embodiment of the present invention, in which the same components as those in the first embodiment are designated by the same reference numerals, and the description of the duplicated construction and operation will be made. Is omitted. That is, the surface 1a of the photoconductor 1 is covered with the protective sheet 2 coated with the lubricant 3 on the contact surface with the photoconductor 1 in order to shield light and prevent scratches. The same as the above embodiment. In this embodiment, the inside of the protect cover 4c of the peeling means 4 in the photoconductor unit 0b of the photoconductor unit 0 is
A winding member 4a (winding shaft) to which one end of the protective sheet 2 is fixed is provided. A handle 4a1 is fixedly provided at the end of the winding member 4a, and by rotating the handle 4a1 in the direction of arrow J shown in the drawing,
The protective sheet 2 is pulled out in the direction of the arrow K shown in the drawing and wound around the winding shaft 4a, the lubricant 3 is transferred to the surface 1a of the photoconductor 1, and the protective sheet 2 is pulled from the surface 1a of the photoconductor 1. It is designed to be peeled off. The cleaning facing roller 6 is provided at a position where the cleaning blade 5 (not shown) comes into contact with the cleaning facing roller 6.
The point that the protect cover 4c is detachably attached to the shaft 6a is similar to the above. Since the procedure for mounting the photoconductor unit 0b on the image forming apparatus is the same as that described with reference to FIGS. 4 and 5, duplicated description will be omitted.

4 (b), the photoconductor unit 0b is inserted into the image forming apparatus in the direction of the arrow D shown in the figure, and then the photoconductor unit 0b is fixed by the fixing bracket 18 as shown in FIG. 4 (c). To do. Further, as shown in FIG. 7, by rotating the handle 4a1 in the direction of arrow J shown in the drawing, the protective sheet 2 is pulled out in the direction of arrow K shown in FIG. The lubricant 3 is transferred onto the protective sheet 2 and the protective sheet 2 is transferred onto the surface 1a of the photoreceptor 1.
It is designed to be peeled off from. Similar to FIG. 5D, the protect cover 4c of the photoconductor unit 0a is
First, it is rotated in the direction of arrow G shown, then lifted in the direction of arrow H shown and pulled out from the shaft 6a of the cleaning facing roller 6 not shown. Therefore, the work of mounting the photoconductor unit 0b on the image forming apparatus is facilitated, and the lubricant 3 does not adhere to clothes or the like of the worker, so that the operability is good.

FIG. 7 is a vertical cross-sectional view of a photoconductor unit according to a third embodiment of the present invention. In this embodiment, the same parts as those in the above embodiment are designated by the same reference numerals, and the duplicated description will be omitted. To do. The protective sheet 2 covers the entire surface of the photoreceptor or the exposed portion. In the photoconductor unit 0c of the photoconductor unit 0, the protect cover 4c of the peeling means 4
One end of the protective sheet 2 is fixed to the above by the fixing tape 4d. Although the cleaning counter roller 6 is provided at a position where the cleaning blade 5 (not shown) comes into contact with the cleaning blade 5, the lubricant 3 does not have to cover the entire surface of the protective sheet 2, and at least the cleaning counter roller 6 contacts the photoreceptor 1. It is applied to the area corresponding to the contact portion, that is, the surface 1a corresponding to the arrow XX area shown in the drawing. Therefore, the lubricant 3 on the sheet 2 which is transferred and applied to the surface 1a of the photoconductor by pulling out the protect cover 4c of the peeling means 4 in the direction of the arrow B in FIG. Body 1 is cleaning blade 5
Since it is applied only to the portion corresponding to the contacting portion of the cleaning blade 5 and is applied only to the minimum necessary contact surface of the cleaning blade 5 that contacts the photosensitive member surface 1a, the cost can be reduced. The procedure for mounting the photoconductor unit 0c on the image forming apparatus is the same as that described in FIG. That is, the front cover 17 is opened, the photoconductor unit 0c is attached, and the fixing bracket 18 is used for fixing. In addition, the protect cover 4c of the photoconductor unit 0c is pulled out as shown in FIG.
This is the same as the method (d).

FIG. 9 shows a procedure for peeling the protective sheet 2. The lubricant 3 on the protective sheet 2 is rotated by the protective cover 4c as shown in FIG. When it is pulled out in the I direction, it is transferred to and adheres to the surface 1a of the photoconductor 1 by sliding friction with the surface 1a of the photoconductor 1. In this way, since the lubricant 3 is applied only to the minimum necessary contact surface with which the cleaning blade 5 abuts on the surface 1a of the photoconductor 1, the cost can be reduced by reducing the material cost. FIG. 10 is a vertical cross-sectional view of a photoconductor unit 0d according to the fourth embodiment of the present invention. This photoconductor unit 0d is a photoconductor including a photoconductor drum or a photoconductor belt as in the other embodiments. 1 and protective sheet 2,
It has a lubricant 3 and a peeling means 4. Photoconductor unit 0d
One end of the protective sheet 2 is fixed to the protect cover 4c of the peeling means 4 in FIG. When the protective sheet 2 is attached to the photoconductor unit 0d, the lubricant 3 is applied to at least a region corresponding to a portion of the cleaning facing roller 6 in contact with the photoconductor 1, that is, a surface 1a corresponding to an arrow XX region in the drawing. It has been applied. Inside the protect cover 4c, there is provided a pressing member 4b for pressing the protective sheet 2 from the back surface to the photoconductor 1 on the cleaning facing roller 6, that is, a pressure bonding roller 4b1 which is rotatable while being pressure-bonded to the photoconductor. The pressure roller 4b1 is rotatably supported by the other end of the leaf spring 4b2 supported at a proper position of the cover 4c, so that the pressure roller 4b1 is rollably pressed against the surface of the photoconductor. Therefore, the lubricant 3 on the sheet 2 which is transferred and applied to the surface 1a of the photoconductor 1 by pulling out the protect cover 4c of the peeling means 4 in the direction of the arrow B in the figure is the area XX. It is only pressed and applied. The lubricant 3 is the surface 1 of the photoreceptor 1.
The contact surface of the cleaning blade 5 (not shown in a) is pressed by the pressure roller 4b1 and applied, so that the adhesion of the lubricant 3 to the surface 1a of the photoconductor 1 can be promoted.

The procedure for mounting the photoconductor unit 0d of this embodiment on the image forming apparatus is the same as that shown in FIG. 4, and the procedure for removing the protect cover 4c is as shown in FIG.
This is as shown in (d) and FIGS. 11 (a) and (b). That is,
First, attach the protect cover 4c to the arrow G in FIG.
Direction, then lift in the direction of arrow H
The cleaning counter roller 6 (not shown) is pulled out from the shaft 6a. Then, in FIG. 11 (a), the protect cover 4c is rotated in the direction of the arrow G shown in FIG.
The rotatable pressure-bonding roller 4b1 is pressure-bonded by the leaf spring 4b2, rotates in the direction of the arrow L shown, and the lubricant 3 is pressed from the back surface of the protective sheet 2 to the front surface 1a of the photoconductor 1. In FIG. 11B, the protective sheet 2
The upper lubricant 3 rotates the protective cover 4c, lifts it, and pulls it out in the direction of the arrow I shown in the drawing. The upper lubricant 3 slides on the surface 1a of the photosensitive member 1 and the pressure roller 4b1 of the pressing member 4b.
Is applied to the surface 1a of the photoconductor 1 so as to be attached thereto. Thus, the surface 1a of the photoconductor
Since the lubricant 3 is pressed and applied to the contact surface with which the cleaning blade 5 (not shown) abuts, the photoreceptor 1
It is possible to promote the adhesion of the lubricant 3 to the surface 1a of the. In each of the above-described embodiments, the belt-shaped photosensitive member 1 is illustrated, but the peeling means 4 of the present invention may be applied to a drum-shaped member.

[0018]

As described above, according to the first aspect of the present invention, the protective sheet covering the outer periphery of the photoconductor from the time immediately after production to the time when the photoconductor is attached to the image forming apparatus is provided on the contact surface with the photoconductor. Since the applied lubricant is transferred to the surface of the photoconductor when the protective sheet is peeled off and removed from the photoconductor by the peeling means, the cleaning blade may not be caught when the photoconductor is new and deterioration due to rubbing may occur. It has become possible to provide a photoconductor unit of an image forming apparatus which is excellent in operability and which is prevented in advance.

According to the second aspect of the present invention, the lubricant applied to the contact surface of the protective sheet made of black paper covering the outer periphery of the photoconductor from immediately after the production until it is mounted on the image forming apparatus is in contact with the photoconductor. Is transferred to the surface of the photoconductor when the protective sheet is peeled and removed from the photoconductor by the peeling means, so that the surface of the photoconductor can be protected at low cost.
Further, it has become possible to provide a photoconductor unit of an image forming apparatus which is excellent in operability and is low in cost, while preventing the cleaning blade from being caught when the photoconductor is new and preventing deterioration due to rubbing.

According to the third aspect of the present invention, the outer periphery of the photoconductor from immediately after production until the time when the photoconductor is attached to the image forming apparatus is applied only to the minimum necessary contact surface of the contact surface of the protective sheet with the photoconductor. The lubricant is transferred to the surface of the photoconductor when the protective sheet is peeled off and removed from the photoconductor by the peeling means, so that the amount of the lubricant used is reduced to reduce the cost and the photoconductor. It has become possible to provide a photoconductor unit of an image forming apparatus which is excellent in operability and is low in cost, while preventing the trouble of winding the cleaning blade when it is new and deterioration due to rubbing.

According to the fourth aspect of the present invention, the lubricant applied to the contact surface of the protective sheet covering the outer periphery of the photosensitive member with the photosensitive member from immediately after the production until the mounting on the image forming apparatus is wound up. When the protective sheet is peeled off from the photoconductor with a member and transferred to the surface of the photoconductor, the workability of winding up the protective sheet is improved, and the cleaning blade entrainment failure and sliding when the photoconductor is new. (EN) It is possible to provide a photoconductor unit of an image forming apparatus that prevents deterioration due to rubbing, is easy to mount, and has excellent operability such that a lubricant does not adhere to clothes or the like of workers. Became.

According to the fifth aspect of the present invention, the lubricant applied to the contact surface of the protective sheet covering the outer periphery of the photosensitive member from immediately after production until it is attached to the image forming apparatus is applied to the protective sheet. When the protective sheet is peeled off and removed from the photoconductor by the peeling means having a pressing member that presses against the photoconductor from the backside, the transfer is transferred to the surface of the photoconductor, and the transferability of the lubricant is greatly improved. A photoreceptor unit of an image forming apparatus that is excellent in operability, such as preventing the cleaning blade from being caught when the photoreceptor is new and deterioration due to rubbing, and promoting adhesion of a lubricant to the surface of the photoreceptor. It is now possible to provide.

According to the sixth aspect of the invention, the lubricant applied to the contact surface of the protective sheet covering the outer periphery of the photosensitive member with the photosensitive member from immediately after the production until it is mounted on the image forming apparatus is provided with the protective sheet. When the protective sheet is peeled off and removed from the photoconductor by a peeling means having a pressure roller that presses the photoconductor onto the photoconductor from the back side, transfer to the surface of the photoconductor is significantly improved. , A photoconductor unit of an image forming apparatus having excellent operability such as preventing a cleaning blade from being caught when the photoconductor is new and preventing deterioration due to rubbing, and further facilitating adhesion of a lubricant to the surface of the photoconductor. Can now be provided.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram illustrating a main part of a photoconductor unit of an image forming apparatus according to a first exemplary embodiment of the present invention.

FIG. 2 is a perspective view illustrating an outline of an image forming apparatus to which a photoconductor unit according to the embodiment of the present invention is attached and detached.

FIG. 3 is a perspective view illustrating a detached state of a photosensitive unit according to an exemplary embodiment of the present invention.

FIGS. 4A, 4B and 4C are explanatory views for explaining a procedure for mounting the photoconductor unit according to the embodiment of the present invention on the image forming apparatus.

5 (d) and 5 (e) are views showing a procedure for peeling off the protective sheet of the photoconductor unit in FIG.

FIG. 6 is a structural explanatory view of a photoconductor unit according to a second embodiment of the present invention.

FIG. 7 is an explanatory diagram of a peeling operation of a protective sheet in the photoconductor unit of the example of FIG.

FIG. 8 is a structural explanatory view of a photoconductor unit according to a third embodiment of the present invention.

FIG. 9 is a diagram illustrating a peeling operation of a protective sheet in a photoconductor unit according to a third embodiment of the present invention.

FIG. 10 is a structural explanatory view of a photoconductor unit according to a fourth embodiment of the present invention.

11A and 11B are views showing a procedure for peeling off the protective sheet in the embodiment of FIG.

[Explanation of symbols]

0 ... Photosensitive member unit, 0a-d ... Photosensitive member unit, 1 ... Photosensitive member, 1a ... Surface, 2 ... Protective sheet, 3 ... Lubricant, 4 ... Peeling Means, 4a ...
Winding member, 4a1 ... Handle, 4b ... Pressing member, 4b1 ... Pressure roller, 4b2 ... Leaf spring, 4c ... Protect cover, 4d ... Fixing tape, 5 ... Cleaning Blade, 6 ... Opposing roller for cleaning, 6a ... Shaft, 7 ... Charging charger, 8 ... Exposure unit, 9 ... CTM, 9a ...
・ Toner supply tank, 9b ... Waste toner recovery tank,
10 ... Toner, 10a ... Residual toner, 11 ...
・ Developing device, 12 ... Paper feeding cassette, 13 ... Recording paper, 14 ... Transfer charger, 15 ... Fixing device, 1
5a: fixing roller, 15b: pressure roller, 16
... Static elimination lamp, 17 ... Front cover, 18 ...
..Fixing brackets, 19 ... Set screws

Claims (6)

[Claims] 1. A photoconductor unit detachably mountable to an image forming apparatus, a photoconductor rotatably held by a unit case, a protective sheet attached to an outer peripheral surface of the photoconductor, and an outer periphery of the photoconductor. A lubricant applied to the surface of the protective sheet in contact with the surface, and a peeling means for peeling the protective sheet from the photoreceptor, and the surface of the photoreceptor when peeling the peeling means from the photoreceptor. A photoconductor unit for an image forming apparatus, wherein the lubricant is transferred. 2. The photoconductor unit of the image forming apparatus according to claim 1, wherein the protective sheet is black paper. 3. The image forming apparatus according to claim 1, wherein the lubricant is applied to at least a portion where a cleaning blade comes into contact with the surface of the photoconductor when the photoconductor unit is mounted. The photoconductor unit of the device. 4. The peeling means has a winding member that winds up the protective sheet.
2. A photoconductor unit of the image forming apparatus described in 2 or 3. 5. The photoconductor unit of the image forming apparatus according to claim 1, wherein the peeling means includes a pressing member that presses the protective sheet against the photoconductor. 6. The photoconductor unit for an image forming apparatus according to claim 5, wherein the pressing member is a pressure roller that is rotatable in pressure contact with the protective sheet.