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Electrophotographic photoreceptor, and image forming apparatus and process cartridge using the same

A technology of electrophotography and imaging equipment, which is applied to the equipment of the electric recording process using the charge pattern, the electric recording process using the charge pattern, optics, etc., and can solve the problems of uneven wear and the like

Active Publication Date: 2009-09-02
FUJIFILM BUSINESS INNOVATION CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is because abrasion occurs unevenly on the surface of the photoreceptor due to the influence of conditions such as contact of a member provided in contact with the photoreceptor (for example, a charging roller, an intermediate transfer body, or a cleaning blade).

Method used

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  • Electrophotographic photoreceptor, and image forming apparatus and process cartridge using the same
  • Electrophotographic photoreceptor, and image forming apparatus and process cartridge using the same
  • Electrophotographic photoreceptor, and image forming apparatus and process cartridge using the same

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Effect test

Embodiment

[0255] Hereinafter, the present invention will be specifically described with reference to examples, but it should be understood that the present invention is not limited to these examples.

[0256] Preparation of photoreceptor A1

[0257] Formation of base coat

[0258] 100 parts by weight of zinc oxide (average particle diameter: 70 nm, sample manufactured by Tayca Corporation) and 500 parts by weight of toluene were mixed under stirring. To this mixture, 1.5 parts by weight of a silane coupling agent (trade name: KBM603, manufactured by Shin-Etsu Chemical Co., Ltd.) was added and stirred for 2 hours. Then, toluene was removed by distillation under reduced pressure, and baking was performed at 150° C. for 2 hours.

[0259] 25 parts by weight of methyl ethyl ketone were mixed with 60 parts by weight of zinc oxide subjected to the above-mentioned surface treatment, 15 parts by weight of a curing agent (blocked isocyanate, trade name: SUMIDUR BL3175, manufactured by Sumika Ba...

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Abstract

The present invention provides an electrophotographic photoreceptor having at least a photosensitive layer and a surface layer provided at a surface of the photosensitive layer The surface layer contains a first layer which is provided at the photosensitive layer side and has a refractive index of n1 and a second layer which is provided at the opposite side of the first layer to the photosensitive layer and has a refractive index of n2. The refractive index of the photosensitive layer (n0), the refractive index of the first layer (n1), the refractive index of the second layer (n2), the film thickness (nm) of the first layer (d1), an integer (a) of 0 or more, and the wavelength (nm) of light with which the surface of the photoreceptor is irradiated when an electrostatic latent image is formed (lambda) satisfy specific relationships.

Description

technical field [0001] The present invention relates to an electrophotographic photoreceptor, an image forming apparatus and a process cartridge using the electrophotographic photoreceptor. Background technique [0002] In recent years, in image forming apparatuses using electrophotography, halftone reproduction has been demanded due to colorization and high-definition requirements. Therefore, in an electrophotographic photoreceptor used in an image forming apparatus (hereinafter may simply be referred to as a “photoreceptor”), halftone reproducibility, that is, reproducibility of exposure potential is required. [0003] In addition, from the viewpoint of reducing service costs, it is necessary to reduce the frequency of replacement of electrophotographic photoreceptors, and thus prolonging the lifetime of photoreceptors has become an important technical issue. Organic photoreceptors and inorganic photoreceptors are known electrophotographic photoreceptors. Although the or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G5/147G03G15/00G03G21/18
CPCG03G5/08285G03G5/142G03G5/147G03G5/047G03G5/144
Inventor 岩永刚西川雅之八木茂鸟越诚之
Owner FUJIFILM BUSINESS INNOVATION CORP
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