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Electrophotographic photosensitive member, method for producing electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus

A technology of electrophotography and photosensitive members, applied in the equipment of the electric recording process using the charge pattern, the electric recording process using the charge pattern, optics, etc., and can solve problems such as changes

Inactive Publication Date: 2016-02-10
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, since the accumulation of charges in the undercoat layer is sufficiently suppressed, the potential may vary during repeated image forming periods

Method used

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  • Electrophotographic photosensitive member, method for producing electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus
  • Electrophotographic photosensitive member, method for producing electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus
  • Electrophotographic photosensitive member, method for producing electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0133] 100 parts of zinc oxide particles (specific surface area: 18.8m 2 / g, powder resistance: 4.9×10 6 Ω·cm, purity: 98.5%) was mixed with 500 parts of toluene. 0.75 parts of dimethyldimethoxysilane (trade name: KBM-22, manufactured by Shin-Etsu Chemical Co., Ltd.) was added to the mixture. The mixture was stirred for 6 hours. Toluene was then evaporated under reduced pressure. The mixture was dried at 140° C. for 6 hours, thus obtaining zinc oxide particles whose surfaces were treated with the compound represented by formula (B-2).

[0134] The following materials were dispersed in a sand mill for 3 hours using glass beads having a diameter of 0.8 mm.

[0135]

[0136] After dispersion, 0.01 parts of silicone oil SH28PA (manufactured by Dow Corning Toray Silicone Co., Ltd.) and 5.6 parts of poly(methyl methacrylate) resin particles (PMMA, manufactured by Sekisui Plastics Co., Ltd., SSX-103, average particle diameter 3.5 μm ) was added to the dispersion liquid to pre...

Embodiment 2 to 23

[0143] The metal oxide particles used in Example 1 to prepare the coating liquid for the undercoat layer, the kind and amount of the compound represented by any one of the formulas (A-1) to (A-10), and the The kind and amount of the compound represented by any one of the formulas (B-1) and (B-2) were varied as listed in Table 11. Except for this, an electrophotographic photosensitive member was produced in the same manner as in Example 1.

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Abstract

An electrophotographic photosensitive member includes a support and an undercoat layer on the support. The undercoat layer contains a metal oxide particle. The metal oxide particle contains a compound represented by any one of the formulae (A-1) to (A-10) and a compound represented by any one of the formulae (B-1) and (B-2) on the surface thereof.

Description

technical field [0001] The present invention relates to an electrophotographic photosensitive member, a method of manufacturing the electrophotographic photosensitive member, a process cartridge including the electrophotographic photosensitive member, and an electrophotographic apparatus including the electrophotographic photosensitive member. Background technique [0002] An electrophotographic photosensitive member installed in an electrophotographic apparatus includes an undercoat layer containing metal oxide particles between a support and a photosensitive layer. It is known that the surface of metal oxide particles is modified with an organic compound in order to suppress charge injection from the support to the photosensitive layer and to suppress charge accumulation in the photosensitive layer. [0003] For example, Japanese Patent Laid-Open No. 10-301314 and Japanese Patent Laid-Open No. 04-229872 describe a technique for treating (surface-treating) the surface of me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G5/04G03G5/14G03G21/18G03G15/00
CPCG03G5/0517G03G5/0521G03G5/144
Inventor 村上健杉山和道川口大辅田中大介
Owner CANON KK