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Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus

A technology of electrophotography and photosensitive members, applied to the equipment of the electric recording process using the charge pattern, the electric recording process using the charge pattern, optics, etc., to achieve the effect of reducing the initial friction coefficient and suppressing positive storage

Inactive Publication Date: 2014-07-23
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] As a result of studies by the present inventors, it was found that when the resin having a siloxane moiety at the terminal disclosed in Japanese Patent Application Laid-Open 2008-195905, Japanese Patent Application Laid-Open No. Carbonate resin or polyester resin) and a charge-transporting substance having a specific structure as a charge-transporting substance, there is room for improvement in terms of positive memory

Method used

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  • Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus
  • Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus
  • Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0146] An aluminum cylinder having a diameter of 30 mm and a length of 265 mm was prepared as a support (conductive support).

[0147] Subsequently, by 10 parts with SnO 2 Coated barium sulfate (conductive particles), 2 parts of titanium oxide (pigment for adjusting resistance), 6 parts of phenolic resin (binder resin), 0.001 part of silicone oil (leveling agent), and 4 parts of methanol and 16 parts of methoxy A mixed solvent of propanol was used to prepare a coating solution for forming a conductive layer. The coating liquid for forming a conductive layer is applied to the support by dip coating to form a coating film. The produced coating film was cured (thermally cured) at 140° C. for 30 minutes to form a conductive layer having a thickness of 15 μm.

[0148] Subsequently, a coating liquid for forming an undercoat layer was prepared by dissolving 3 parts of N-methoxymethylated nylon and 3 parts of copolymerized nylon in a mixed solvent of 65 parts of methanol and 30 part...

Embodiment 2 to 44 and 47 to 190

[0167] In addition to changing the types of component α, component β, component γ, polycarbonate resin A, polyester resin B, and solvent of the charge transport layer in Example 1 as shown in Table 3, in the same manner as in Example 1 An electrophotographic photosensitive member was produced in the same manner as in .

Embodiment 191 to 194

[0169] In addition to changing the types of component α, component β, component γ, polycarbonate resin A, polyester resin B, and solvent of the charge transport layer in Example 1 as shown in Table 3, in the same manner as in Example 1 An electrophotographic photosensitive member was produced in the same manner as in .

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Abstract

The invention relates to an electrophotographic photosensitive member, a process cartridge and an electrophotographic apparatus. The charge transporting layer as the surface layer of an electrophotographic photosensitive member includes a charge transporting substances represented by any one of formulae (1) to (5), a specific compound, and a specific resin (binder resin). The specific compound is hexanol, heptanol, cyclohexanol, benzyl alcohol, ethylene glycol, 1,4-butanediol, 1,5-pentanediol, diethylene glycol, diethylene glycol ethyl methyl ether, ethylene carbonate, propylene carbonate, nitrobenzene, pyrrolidone, N-methylpyrrolidone, methyl benzoate, ethyl benzoate, benzyl acetate, ethyl 3-ethoxypropionate, acetophenone, methyl salicylate, dimethyl phthalate, or sulfolane.

Description

technical field [0001] The present invention relates to an electrophotographic photosensitive member, a process cartridge, and an electrophotographic apparatus. Background technique [0002] An electrophotographic photosensitive member containing an organic photoconductive material (charge generating material) is generally used as an electrophotographic photosensitive member mounted on an electrophotographic apparatus. Since electrical or mechanical external forces such as charging, exposing, developing, transferring, and cleaning are directly applied to the surface of the electrophotographic photosensitive member when the electrophotographic apparatus repeatedly performs image formation, the surface of the electrophotographic photosensitive member needs to have durability against external force. In addition, the surface of the electrophotographic photosensitive member needs to have reduced frictional force (lubricity and slidability) applied to a contact member such as a cl...

Claims

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Application Information

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IPC IPC(8): G03G5/04G03G21/18G03G15/00
CPCG03G5/051G03G5/0514G03G5/0517G03G5/0521G03G5/056G03G5/0564G03G5/0589G03G5/0592G03G5/0616G03G5/061473G03G5/06147G03G5/061443G03G5/06149G03G5/04G03G5/047G03G5/14756G03G15/06G03G21/18G03G5/06144
Inventor 西将史姉崎隆志志田和久云井郭文田中大介杉山和道
Owner CANON KK
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