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Electrophotographic photoreceptor, electrophotographic photoreceptor cartridge, and image formation device

A technology of electrophotography and photoreceptor, which is applied in the fields of optics, electrical recording, instruments, etc., can solve the problems of poor electrical characteristics and adhesion, and achieve the effect of excellent adhesion and sufficient wear resistance

Active Publication Date: 2019-05-21
MITSUBISHI CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In general, a binder resin that constitutes a charge transport layer and is excellent in wear resistance is often poor in electrical characteristics and adhesiveness, so the idea that such separation of functions is effective has been disclosed many times in the past.

Method used

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  • Electrophotographic photoreceptor, electrophotographic photoreceptor cartridge, and image formation device
  • Electrophotographic photoreceptor, electrophotographic photoreceptor cartridge, and image formation device
  • Electrophotographic photoreceptor, electrophotographic photoreceptor cartridge, and image formation device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0189]

[0190] Use a ball mill to disperse surface-treated titanium oxide in a mixed solvent with a mass ratio of methanol / 1-propanol of 7 / 3, thereby obtaining a dispersion slurry of surface-treated titanium oxide, which has an average primary particle size of Rutile-type titanium oxide with a diameter of 40 nm ("TTO55N" manufactured by Ishihara Sangyo Co., Ltd.) and 3% by mass of methyldimethoxysilane ("TSL8117" manufactured by Toshiba Silicone Co., Ltd.) relative to the titanium oxide were mixed by Henschel. machine for mixing. In the dispersion slurry, the mixed solvent of methanol / 1-propanol / toluene, and the compound represented by ε-caprolactam [the compound represented by the following formula (A)] / bis(4-amino-3-methylcyclohexyl) Methane [the compound represented by the following formula (B)] / hexamethylenediamine [the compound represented by the following formula (C)] / decamethylene dicarboxylic acid [the compound represented by the following formula (D) Compound] / oc...

Embodiment 2

[0231] A photoreceptor was produced in the same manner as in Example 1, except that the production of the second charge transport layer-forming coating liquid and the production of the first charge transport layer-forming coating liquid were changed as follows in Example 1. And carried out the evaluation, the results are shown in Table-2.

[0232]

[0233] Make 100 parts of polycarbonate resin (PC2) (viscosity-average molecular weight 30,000) with the following repeating structural unit, 60 parts of compounds shown in the above-mentioned CT-5 as charge transport material, antioxidant (Ciba Specialty Chemicals company as additive) manufactured, trade name Irganox 1076) and 0.05 parts of silicone oil (manufactured by Shin-Etsu Silicone: trade name KF96) dissolved in 560 parts of a mixed solvent of tetrahydrofuran / toluene (8 / 2 (mass ratio)) to prepare the second charge Coating liquid for transmission layer formation.

[0234] [chemical formula 9]

[0235]

[0236]

[0237]...

Embodiment 3

[0239] A photoreceptor was produced in the same manner as in Example 1, except that the production of the second charge transport layer-forming coating liquid and the production of the first charge transport layer-forming coating liquid were changed as follows in Example 1. And carried out the evaluation, the results are shown in Table-2.

[0240]

[0241] Make 100 parts of polycarbonate resin (PC3) (viscosity-average molecular weight 50,000) with the following repeating structural unit, 60 parts of compounds shown in the above-mentioned CT-5 as charge transport material, antioxidant (Ciba Specialty Chemicals company as additive) 4 parts, product name Irganox 1076) and 0.05 parts of silicone oil (manufactured by Shin-Etsu Silicone Co., Ltd.: product name KF96) were dissolved in 610 parts of a mixed solvent of tetrahydrofuran / toluene (8 / 2 (mass ratio)), and the second charge was prepared. Coating liquid for transmission layer formation.

[0242] [chemical formula 10]

[024...

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Abstract

The purpose of the present invention is to provide: an electrophotographic photoreceptor having a charge transport layer that has excellent electrical characteristics and adhesion, while manifesting satisfactory wear resistance indispensable for long service life, and an electrophotographic photoreceptor cartridge and an image formation device provided with the electrophotographic photoreceptor. The present invention pertains to an electrophotographic photoreceptor having a charge transport layer comprising at least two layers, the elastic deformation rate of the binder resin contained in a first charge transport layer, which is the outermost layer, and the elastic deformation rate of the binder resin contained in a second charge transport layer, satisfying a prescribed relationship.

Description

technical field [0001] The present invention relates to an electrophotographic photoreceptor having excellent abrasion resistance, electrical properties, and adhesiveness, an electrophotographic photoreceptor cartridge and an image forming apparatus including the electrophotographic photoreceptor. Background technique [0002] Electrophotographic technology has been widely used in copiers, printers, and printing machines because of the ability to obtain high-quality images in real time. As for the electrophotographic photoreceptor (hereinafter referred to as "photoreceptor"), which is the core of electrophotography technology, photoreceptors using organic photoconductive substances, which have the advantages of being pollution-free and easy to film and manufacture, have been widely used. . [0003] When the guaranteed number of image forming apparatuses is large, the photoreceptor is also required to have high repeat durability. In order to maintain the image quality over ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G5/05G03G5/047G03G5/06G03G5/147
CPCG03G5/0592G03G5/0596G03G5/047G03G5/0564G03G5/061473G03G5/06147G03G5/061443G03G5/06149G03G5/056
Inventor 藤井章照长尾由香宫下涉
Owner MITSUBISHI CHEM CORP
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