JPH09249276A - Packing method of electrophotographic photoreceptor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packing method in which the lower and upper parts of a photoreceptor are easily distinguished in the state the external face of the body is coated with a protection cover in order to previously prevent troubles caused by the reversed position of the electrophotographic photoreceptor. SOLUTION: In a packing method for an electrophotographic photoreceptor in which a photosensitive layer 2 formed at the external surface of the cylindrical photoreceptor 1 is coated with a protection cover sheet 3, one or more sticking pieces 4 are stuck to the protection cover 3 and the winding end of the overlapped part is positioned at the asymmetrical point against the central part of the cylinder axis of the body 1. It is effective that the sticking pieces 4 are stuck to the overlapped part of the winding end positioned by the distance within 1/3 of the cylinder length of the photoreceptor 1 from the one end edge of the body 1 to stop winding. A pressure-sensitive adhesive tape is preferably used for the sticking pieces 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for packing a photoconductor used in an electrophotographic apparatus.

[0002]

2. Description of the Related Art An electrophotographic photosensitive member is manufactured by dipping the outer surface of a cylindrical substrate (a method of forming a film by immersing a cylindrical substrate in a coating solution containing a photosensitive material almost vertically). The method of forming the photosensitive layer is widespread. A sheet having a light-shielding property on the outer surface of the photoconductor in order to protect the photoconductive layer formed on the outer surface of the photoconductor after the film formation process from mechanical damage, deterioration due to strong light, adhesion of contaminants, and the like. A packing method of covering with a protective cover is generally adopted. As a material for the sheet-like protective cover, black fine paper is often used, but in some cases, a synthetic resin film such as polyester may be used.

2A and 2B are configuration diagrams showing an example of a conventional packing method for an electrophotographic photosensitive member. FIG. 2A shows a state before packing and FIG. 2B shows a state after packing. . The packing procedure will be described below with reference to FIG. First, a sheet-like protective cover 3 having a light-shielding property of a size capable of covering substantially the entire surface of the photosensitive layer 2 formed on the outer surface of the photosensitive member 1 is prepared. The photosensitive layer 2 is covered by winding along the surface, and finally, the winding end superposed portion of the protective cover 3 is fixed from the outer surface with an adhesive tape 4a. The method of fixing the winding end overlapping portion of the protective cover 3 at the substantially central portion is described in JP-B-1-573.
No. 44 discloses this.

[0004]

In the film forming process by the dipping method, the cylindrical substrate has a substantially vertical axis in a coating tank having a predetermined coating liquid corresponding to the number of film forming layers. The cylindrical substrate is dipped in and then pulled up to complete the photoreceptor. In the photoconductor that has completed the film formation process of the photosensitive layer, there is a slight variation in the film formation state due to the difference in the coating condition near the edge between the lower part that is the dipping start side and the upper part that is the opposite side Since there will be differences such as the presence or absence of uncoated parts depending on the dipping situation, avoiding these effects by providing appropriate margins (areas where the photosensitive function is not expected) at the lower and upper edges of the photoconductor. Utilize the area of stable and stable photosensitivity. Therefore, it is extremely important that the lower part and the upper part of the photoconductor can be clearly discriminated in the step after the formation of the photosensitive layer.

However, in the conventional packing method in which the outer surface of the photoreceptor is covered with a sheet-like protective cover and one central portion of the winding end overlapping portion of the protective cover is fixed from the outer surface with an adhesive tape, Since the external appearance afterward is almost symmetrical, it is difficult to determine whether or not the photoconductor reverses in the packaged state, which causes problems due to vertical reversal of the photoconductor in the process after film formation. There was a possibility to do. In addition, in order to accurately know whether or not the photoconductor is reversed in the conventional state, it is necessary to peel off the adhesive tape or shift the protective cover to reconfirm the outer surface of the photoconductor, so that the photosensitive layer is mechanically There is a possibility that the film quality may be deteriorated such as damage, and a great amount of labor may be consumed.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems and to provide a packing method which makes it possible to easily distinguish the lower part and the upper part of a photoconductor even when the outer surface of the photoconductor is covered with a protective cover. I am trying.

[0007]

In order to achieve the above-mentioned object, a method for packing an electrophotographic photosensitive member in which a photosensitive layer formed on the outer surface of a cylindrical photosensitive member is covered with a sheet-like protective cover. In order to solve the problem, one or more fixing pieces are attached to the protective cover and the position where the winding end overlapping portion is unwound is set to be asymmetric with respect to the central portion in the cylindrical axial direction of the photoconductor. ing. By doing so, the above object can be achieved without separately providing a mark on the protective cover for distinguishing the upper and lower parts of the photoconductor.

Further, it is effective to attach a fixing piece to the winding end overlapping portion at a position separated from the edge portion of one end of the photosensitive member by a distance within 1/3 of the cylindrical length of the photosensitive member and fix the winding end. . Furthermore, it is preferable that the fixing piece is an adhesive tape. Based on the above-mentioned packing means, even if the outer surface of the photoconductor is covered with the protective cover, it is possible to easily distinguish between the lower part and the upper part of the photoconductor, and the trouble due to the upside-down reversal of the photoconductor in the subsequent process is prevented. This can be prevented in advance, and the workability at the time of packing is improved, so that reliable and quick packing can be realized.

[0009]

1 is a block diagram showing a packing method according to an embodiment of the present invention. FIG. 1 (a) shows a state before packing and FIG. 1 (b) shows a state after packing. Show. Figure 1 below
It will be described based on. First, one sheet-like protective cover 3 having a light-shielding property is prepared using black wood free paper.
The width of the protective cover 3 is within the cylindrical length of the photoconductor 1 and the length is the outer peripheral length of the photoconductor 1 plus a stacking margin.
The entire surface of the photosensitive layer 2 formed on the outer surface of the above can be covered with a single winding.

Next, one or more fixing pieces 4 are attached to the protective cover 3 wrapped around the outer surface of the photosensitive member 1 (in the first embodiment,
In the second embodiment, the position where the winding end overlapped portion is unwound is set to an asymmetrical position with respect to the central portion of the photoconductor 1 in the cylinder axis direction. As the fixing piece 4, a section material (such as a seal) made of paper, cloth, synthetic resin sheet or the like having adhesiveness on one side, or a band material having a width of 8 mm to 20 mm (such as an adhesive tape) ) Is used, and the protective cover 3 is molded to a size that occupies approximately twice the size of the pasted portion on the outer surface at one end of the rolled end overlapped portion.

Finally, the protective cover 3 is wound around the outer surface of the photoconductor 1, and the side of the protective cover 3 to which the fixing piece 4 is attached faces upward and the winding end overlapping portion of the protective cover 3 is placed. Polymerize so that there is no slack, and secure piece 4 on the outer surface in front of the bottom of protective cover 3.
Fix the unattached part of and complete the packing. Regarding the packing procedure in which the fixing piece 4 is attached and fixed to the winding end overlapping portion of the protective cover 3, instead of the above procedure, the protective cover 3 should be slackened along the outer surface of the photoconductor 1. The same result can be obtained even if the fixing piece 4 is attached and fixed so as to substantially evenly overlap the lower end and the upper front of the winding end overlapping portion of the protective cover 3 after winding.

(Example 1) A width of 245 (m) along the outer surface of a photosensitive member having a cylindrical length of 250 (mm) and an outer diameter of 30 (mm).
m) and 100 (mm) long black light-shielding sheet is wrapped around as a protective cover, and 75 (m) each from the upper edge of the photoconductor.
m) and 130 (mm) are separated from each other by 10 (m
m) × 40 (mm) weak paper-made weak adhesive tape (adhesive tape having lower adhesiveness than ordinary adhesive tape) was used for fixing. As a result, even if the outer surface of the photoconductor is covered with the protective cover, it is possible to easily distinguish the lower part and the upper part of the photoconductor, and the use of a weak adhesive tape improves workability such as sticking and peeling. Improved and reliable and quick packaging has been realized.

(Embodiment 2) The same protective cover as that of Embodiment 1 is wound around the outer surface of the same photoreceptor as that of Embodiment 1, and at a position 75 mm apart from the upper edge of the photoreceptor. 10 (m
m) × 40 (mm) was fixed using an adhesive tape made of high-quality paper. As a result, the same results as in Example 1 could be obtained.

[0014]

According to the present invention, in a packaging method of an electrophotographic photoreceptor, a photosensitive layer formed on the outer surface of a cylindrical photoreceptor is covered with a sheet-like protective cover. The outer surface of the photoconductor is covered with the protective cover by attaching the fixing piece of and setting the position where the winding end overlapping portion is unwound to be asymmetric with respect to the center of the photoconductor in the cylindrical axis direction. Even in this state, the lower part and the upper part of the photoconductor can be easily discriminated from each other, and it is possible to prevent the occurrence of defects due to the upside-down reversal of the photoconductor in the subsequent process.

In the above-mentioned means, a fixing piece is attached to the winding end overlapping portion at a position separated from the edge portion at one end of the photosensitive member by a distance within 1/3 of the cylindrical length of the photosensitive member to fix the winding end. This makes it possible to more clearly distinguish the lower part and the upper part of the photoconductor. Further, in the above means, by using the adhesive tape for the fixing piece, the workability at the time of packing is improved, and reliable and quick packing can be realized.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a packing method according to an embodiment of the present invention, in which (a) is a state diagram before packaging and (b) is a state diagram after packaging.

2A and 2B are configuration diagrams showing an example of a conventional packing method for an electrophotographic photoreceptor, in which FIG. 2A is a state diagram before packaging, and FIG. 2B is a state diagram after packaging.

[Explanation of symbols]

 1 ... Photoreceptor 2 ... Photosensitive layer 3 ... Protective cover 4 ... Fixing piece

Claims (3)

[Claims] 1. A packing method for an electrophotographic photoreceptor, wherein a photosensitive layer formed on the outer surface of a cylindrical photoreceptor is covered with a sheet-like protective cover, and one or more fixing pieces are attached to the protective cover. A method of packing an electrophotographic photosensitive member, wherein a position at which the winding end overlapping portion is wound is asymmetric with respect to a central portion of the photosensitive member in the cylindrical axis direction. 2. A fixing piece is affixed to the winding end overlapping portion at a position separated from the edge portion of one end of the photosensitive member by a dimension within 1/3 of the cylindrical length of the photosensitive member to fix the winding end. The method for packing an electrophotographic photosensitive member according to claim 1. 3. The packing method for an electrophotographic photosensitive member according to claim 1, wherein the fixing piece is an adhesive tape.