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Electrophotographic photoreceptor, method of producing electrophotographic photoreceptor, and apparatus of forming electrophotographic image

A technology of electrophotography and manufacturing method, which is applied in the direction of electric recording technology using charge pattern, equipment and optics of electric recording technology using charge pattern, and can solve the problems of memory resistance, low hole transport performance and wear resistance. Improves memory resistance, high curing reaction, and film strength

Inactive Publication Date: 2018-01-30
KONICA MINOLTA INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, these proposed charge-transporting substances added to the surface protection layer have low hole-transporting properties and cannot satisfy memory resistance under stricter conditions.
In order to satisfy memory resistance, it is desirable to contain a charge-transporting material with high hole-transporting properties, but the charge-transporting material with high hole-transporting properties is in the light absorption wavelength region of the polymerization initiator used for the curing reaction of the surface protective layer There is absorption in the medium, so the hardness decreases greatly, and as a result, there is a problem that the wear resistance is poor.

Method used

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  • Electrophotographic photoreceptor, method of producing electrophotographic photoreceptor, and apparatus of forming electrophotographic image

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Embodiment

[0344] Hereinafter, although an Example demonstrates this invention concretely, this invention is not limited to these.

[0345] Electrophotographic photoreceptors 1 to 19 were produced as follows.

[0346] [Production of Electrophotographic Photoreceptor 1]

[0347] The surface of the cylindrical aluminum support body with a diameter of 60 mm was cut, and the electroconductive support body was prepared.

[0348]

[0349] A dispersion liquid having the following composition was diluted 1.5 times with the same mixed solvent, left to stand overnight, and then filtered (filter: using a 5 μm filter manufactured by Nippon Paul Co., Ltd.), to prepare an intermediate layer coating liquid.

[0350]

[0351] Dispersion was performed in a batch mode for 5 hours using a sand mill as a disperser.

[0352] The above-mentioned coating solution was applied on the above-mentioned support by a dip coating method so that the thickness after drying would be 2 μm, thereby forming an interm...

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Abstract

Provided is an electrophotographic photoreceptor including a conductive support, a photosensitive layer, and a surface protective layer disposed in sequence. The surface protective layer includes a cured product of a composition containing a polymerizable compound, a charge transporting material, and at least two polymerization initiators. The polymerization initiators include an acyl phosphine oxide and an O-acyl oxime.

Description

technical field [0001] The present invention relates to an electrophotographic photoreceptor, a method for producing the same, and an electrophotographic image forming apparatus, and in particular, to an electrophotographic photoreceptor capable of maintaining durability and having memory resistance (memory resistance) and abrasion resistance, and its production Method and electrophotographic image forming apparatus. Background technique [0002] In recent years, in electrophotographic image forming apparatuses, in addition to increasing the speed of print output, downsizing and maintenance-free apparatuses are required. Accompanying these demands, there are increasing demands for a smaller diameter (miniaturization) and higher durability of drum-shaped photoreceptors among electrophotographic photoreceptors used in electrophotographic image forming apparatuses. As an electrophotographic photoreceptor, the photosensitive layer of the commonly used organic photoreceptor (her...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G5/147
CPCG03G5/0564G03G5/0618G03G5/062G03G5/14704G03G5/14791G03G5/0542G03G5/0546G03G5/14734G03G15/75G03G5/14717G03G5/0532G03G5/0507G03G5/047G03G5/0525G03G5/0696G03G5/102
Inventor 上田麻理藤田俊行堀口治男
Owner KONICA MINOLTA INC
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