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Process for producing electrophotographic photosensitive member, electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus

A technology of electrophotography and manufacturing method, which is applied in the photoengraving process of the pattern surface, the electric recording process using the charge pattern, the equipment of the electric recording process applying the charge pattern, etc., can solve the uneven SD gap, the output image density Deviations, defects, etc.

Inactive Publication Date: 2004-08-18
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the case of spraying jet water to remove it, there are problems such as complexity of the removal device and residual water droplets after removal.
[0007] On the other hand, when the end of the dried coating film is not removed, the friction between the electrophotographic photoreceptor and the separator causes layer peeling, and the SD gap becomes uneven, resulting in variation in the density of the output image.
In addition, sometimes defects in the image are caused by the peeled layer

Method used

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  • Process for producing electrophotographic photosensitive member, electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus
  • Process for producing electrophotographic photosensitive member, electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus
  • Process for producing electrophotographic photosensitive member, electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] An aluminum cylinder with a diameter of 62 mm and a length of 363 mm was used as a support.

[0081] Then, 10 parts of SnO2 coating process barium sulfate (conductive pigment), 2 parts of titanium oxide (pigment for adjusting resistance), 6 parts of phenolic resin, 0.001 part of silicone oil (homogenized agent), and a mixed solvent of 4 parts of methanol / 16 parts of methoxy propanol were dispersed for 2 hours to adjust the coating solution for the conductive layer.

[0082] This conductive layer was dip-coated on a support with a coating solution, and thermally cured at 140° for 30 minutes to form a conductive layer with a film thickness of 15 μm.

[0083] Next, 3 parts of N-methoxymethyl nylon and 3 parts of copolymerized nylon were dissolved in a mixed solvent of 65 parts of methanol / 30 parts of n-butanol to prepare a coating solution for an intermediate layer.

[0084] This intermediate layer was dip-coated on the conductive layer with a coating solution, and dried ...

Embodiment 2

[0111] In Example 1, an electrophotographic photoreceptor was produced and evaluated in the same manner as in Example 1, except that the notch angle was set to 90° when the end portion of the charge transport layer was removed. The results are shown in Table 1.

Embodiment 3

[0113] In Example 1, an electrophotographic photoreceptor was produced and evaluated in the same manner as in Example 1, except that the notch angle was 90° and the air injection time was 5 seconds when removing the end portion of the charge transport layer. The results are shown in Table 1.

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Abstract

In a process for producing an electrophotographic photosensitive member having a support and a photosensitive layer provided thereon, the process comprises a coating step of coating the surface of the support with a coating fluid to form a wet coating; a drying step of drying the wet coating formed by the coating step, to form a dried coating film; a cutting step of making a cut in the dried coating film formed by the drying step, in its peripheral direction at a preset position; and a removal step of removing, by jetting a gas, the dried coating film on its end side extending from the cut made by the cutting step. Also disclosed are an electrophotographic photosensitive member produced by this production process, and a electrophotographic photosensitive member and an electrophotographic apparatus which have the electrophotographic photosensitive member.

Description

technical field [0001] The present invention relates to a method of manufacturing an electrophotographic photoreceptor, and relates to an electrophotographic photoreceptor, a process cartridge having the electrophotographic photoreceptor, and an electrophotographic device. Background technique [0002] In the past, inorganic electrophotographic photoreceptors using inorganic photoconductive substances such as selenium, cadmium sulfide, and zinc oxide were used as electrophotographic photoreceptors mounted on electrophotographic devices. From the viewpoints of high productivity, ease of material design, and the like, organic electrophotographic photoreceptors using organic photoconductive materials are often used. [0003] Generally, an organic electrophotographic photoreceptor has a structure in which one or more layers (including a photosensitive layer) are formed on a support, and these layers are formed by applying a coating liquid for each layer and drying it. In additi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G5/05G03G5/10
CPCG03G5/10G03G5/0503G03G5/0525
Inventor 小川英纪长田宫子
Owner CANON KK