JP2001117418A - Packing method for electrophotographic photoreceptor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packing method for electrophotographic photoreceptor by which damage generated on the surface of a photosensitive layer by the contact of a black paper can be avoided when covering the outer surface of the photoreceptor with the black paper. SOLUTION: In the packing method for electrophotographic photoreceptor for covering the outer surface of a photoreceptor 1 with a black paper 2, which photoreceptor is obtained by providing a photosensitive layer 1b on the surface of a cylindrical substrate 1a, the black paper 2 equipped with cornered parts 2a by notching both the corners of one side of the rectangular black paper having the same width as the photosensitive layer 1b into slanting lines is prepared, and the photoreceptor 1 is packed by covering the outer surface by winding this black paper 2 around the surface of the photosensitive layer 1b with the side of the cornered parts 2a as a winding start side.

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 photosensitive member used in an electrophotographic apparatus. More specifically, the present invention relates to a packing method for protecting a photosensitive layer formed on an outer surface of an electrophotographic photosensitive member.

[0002]

2. Description of the Related Art A photoreceptor used in an electrophotographic apparatus is formed by forming a photoconductive photosensitive layer on the surface of a cylindrical substrate. Since the photosensitive layer plays an important role in the electrophotographic process, such as converting an optical image into an electrostatic latent image, to protect the photosensitive layer from mechanical damage, deterioration due to strong light, and adhesion of contaminants, For example, a packing method in which light-shielding black paper such as black high-quality paper is wound around the outer surface of the photoreceptor and covered has been frequently used.

[0003] If there is a gap between the photosensitive layer and black paper, the photosensitive layer is damaged by the intrusion of dust and the like, and this causes a photoreceptor to cause image defects. A packing method has been adopted in which a rectangular black paper having the same width as the layer is tightly wound on the surface of the photosensitive layer and wound.

[0004]

In the case of the photoreceptor by the conventional packing method, the photosensitive layer was securely protected by the black paper wound tightly, but the black paper was placed on the surface of the photosensitive layer. At the time of winding, there is a problem that the corners of the black paper come into contact with the surface of the photosensitive layer to damage the photosensitive layer, which may cause a deterioration in the quality of the photosensitive member such as poor appearance or image defects.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to cover the outer surface of a photoreceptor with black paper, which is generated on the surface of the photosensitive layer by contact with the black paper. An object of the present invention is to provide a method of packing an electrophotographic photoreceptor capable of avoiding damage.

[0006]

According to the present invention, an object of the present invention is to provide a method of packing an electrophotographic photoreceptor, wherein the outer surface of a photoreceptor having a photosensitive layer provided on a cylindrical substrate is coated with black paper. This is achieved by cutting out both corners of one side having the same width as the rectangular black photosensitive layer and forming a chamfered portion, and winding around the surface of the photosensitive layer using the chamfered portion as a winding start side.

[0007] It is effective to use black paper in which the chamfered portion is cut into either an oblique line or an oblique line or an arc with rounded edges. According to the above packing method,
When the outer surface of the photoreceptor is covered with black paper, the surface of the photosensitive layer comes into contact with the rounded portion of the black paper cut into an obtuse or square shape, so that no damage occurs.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view showing a method of packing an electrophotographic photosensitive member according to the present invention, and shows a state immediately before packing. In FIG. 1, when the outer surface of a photosensitive member 1 having a photosensitive layer 1b formed on the surface of a cylindrical base 1a formed of a conductive circular tube is covered with black paper 2, both sides having the same width as the photosensitive layer 1b are used. A black paper 2 having corners cut out as indicated by dotted lines and having a chamfered portion 2a is prepared and wound around the surface of the photosensitive layer 1b with the chamfered portion 2a side as the winding start side so that the photosensitive layer 1b is covered. The body 1 is packed.

FIG. 2 is a plan view of a black paper used for packing the electrophotographic photosensitive member according to the present invention. FIG. 2 (a) is a black paper provided with a diagonally cut corner, and FIG. 2 (b). FIG. 4 is a view showing black paper provided with a rounded oblique line (rounded oblique line) chamfered portion, and FIG. 4C is a diagram showing a black paper provided with an arcuate chamfered portion. In the black paper 21 shown in FIG. 2A, both corners of one side having the same width as the photosensitive layer are cut obliquely, and a cut-out chamfered portion (hatched portion) 21a is provided as shown by a dotted line. Is the winding start side 21b.

In the black paper 22 shown in FIG. 2B, both corners of one side having the same width as the photosensitive layer are cut into oblique lines with rounded ends, and cut out as shown by dotted lines. A rounded oblique line 22a is provided, and this side is defined as a winding start side 22b. In the black paper 23 shown in FIG. 2C, both corners of one side having the same width as the photosensitive layer are cut into an arc shape to form a cut-out chamfered portion (arc shape) 23a as shown by a dotted line. Is the winding start side 23b.

2 (b) and black paper provided with an arc-shaped chamfer shown in FIG. 2 (c). It can easily be inferred from black paper provided with a diagonal-shaped chamfer shown in a). Less than,
A description will be given of an embodiment using black paper provided with slanted corners. (Example 1) Outer diameter 30 (mm) x cylindrical length 254 (mm)
The undercoat layer is provided on the cylindrical substrate of the above, and a charge generating layer and a charge transport layer are laminated thereon to produce a photosensitive member having a width of 245 (mm), and the width is 245 (mm) × length. A rectangular black paper having a thickness of 160 (mm) (trade name: Kony Black, manufactured by Lintec Co., Ltd., 50 g / m ² ) was prepared, and as shown in FIG. m
m), cut into oblique lines with a winding direction of 30 (mm), processed into black paper having a chamfered portion, and wound around the surface of the photosensitive layer with the chamfered portion as the winding start side to cover. (Comparative Example 1) The procedure was the same as that of Example 1 except that a rectangular black paper which was not subjected to diagonal cutting was wound around the surface of the photosensitive layer and covered.

In Example 1 and Comparative Example 1,
Each of the 100 photoconductors was packed, the time required for winding was measured, and the incidence of surface damage on the photoconductive layer was investigated. Table 1 shows the results.

[0013]

[Table 1] According to the above results, in Example 1, there was no surface damage of the photosensitive layer due to black paper, whereas in Comparative Example 1, five (5%) surface damages of the photosensitive layer due to black paper occurred. From this, it was found that the packing method using black paper provided with a corner portion is superior to the packing method using rectangular black paper.

In addition, in Example 1, the required time for winding was reduced by about 9% as compared with Comparative Example 1, so that the workability of the packing was smaller than that of the packing method using rectangular black paper. It turned out that the packing method using the provided black paper is more advantageous.

[0015]

As described above, the method of packing an electrophotographic photosensitive member according to the present invention is performed using black paper provided with a chamfered portion as described above, so that the black paper comes into contact with the surface of the photosensitive layer. Since no damage is caused on the surface of the photoconductor, the defective rate due to the packaging of the photoconductor can be reduced.

As an additional effect, the time required for winding black paper can be reduced, so that work productivity can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a method for packing an electrophotographic photosensitive member according to the present invention.

FIGS. 2A and 2B are plan views of black paper used for packing the electrophotographic photoreceptor according to the present invention, wherein FIG. 2A is black paper having a slanted corner, and FIG. 2B is a slanted line with rounded edges. (C) Black paper provided with an arc-shaped chamfered portion. FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Photoreceptor 1a ... Cylindrical base 1b ... Photosensitive layer 2 ... Black paper 2a ...

Claims (2)

[Claims] 1. A method for packing an electrophotographic photoreceptor, wherein the outer surface of a photoreceptor having a photosensitive layer provided on a cylindrical substrate is coated with black paper, the width of the rectangular black paper being the same as that of the photosensitive layer. A method for packing a photoreceptor for electrophotography, comprising cutting off both corners of one side to form a chamfered portion, and winding around the surface of the photosensitive layer with the chamfered portion side as a winding start side. 2. The electrophotographic photoreceptor according to claim 1, wherein the shaved portion is made of black paper cut into a slanted line, a slanted line with rounded edges, or an arc. Packing method.