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Electrophotographic photoreceptor, process cartridge and image-forming apparatus

A technology for electrophotography and imaging equipment, which is applied in the field of process boxes, imaging equipment, and electrophotographic photoreceptors, and can solve problems such as deterioration of electrical characteristics, attenuation of charged potential, and increase in residual potential of photoreceptors.

Active Publication Date: 2007-07-04
FUJIFILM BUSINESS INNOVATION CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the electrophotographic photoreceptors described in the aforementioned Japanese Patent Laid-Open No. 2002-82469 and Japanese Patent Laid-Open No. 2003-186234 also have a problem that their electrical characteristics will vary depending on the used extreme deterioration of the curing conditions
When this type of electrophotographic photoreceptor is repeatedly charged and exposed, the residual potential of the photoreceptor increases and its charging potential decays, resulting in image defects when the photoreceptor is used for long-term imaging

Method used

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  • Electrophotographic photoreceptor, process cartridge and image-forming apparatus
  • Electrophotographic photoreceptor, process cartridge and image-forming apparatus
  • Electrophotographic photoreceptor, process cartridge and image-forming apparatus

Examples

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Effect test

Embodiment 1

[0356] A cylindrical aluminum base material of 30 mmΦ was ground with a centerless grinding apparatus so that the ten-point average surface roughness Rz=0.55 μm. The cylindrical aluminum substrate thus treated by centerless grinding was washed in the following order: it was degreased, etched with a 2% by weight aqueous sodium hydroxide solution for 1 minute, neutralized, and washed with pure water. Then, the aluminum substrate was anodized with 10% by weight sulfuric acid solution (current density: 1.0 A / dm 2 ) to form an anodized film on its surface. After washing with water, it was immersed in a 1% by weight nickel acetate solution at 80° C. for 20 minutes to seal the anodized film. Furthermore, it was washed with pure water and dried. This process provides the aluminum substrate with an approximately 6.5 μm thick anodized film formed on its surface.

[0357] Next, 1 part by weight of gallium phthalocyanine chloride having strong diffraction peaks at Bragg angles (2θ±0.2°...

Embodiment 2

[0362] A honed 30 mmΦ cylindrical aluminum substrate was prepared. Next, 100 parts by weight of a zirconium compound (Orgatix ZC540, produced by Matsumoto Chemical Industry Co., Ltd.), 10 parts by weight of a silane compound (Al100, produced by Nippon Unicar Co., Ltd.), 400 parts by weight of isopropyl alcohol and 200 parts by weight Parts of butanol were mixed to prepare a coating liquid for undercoat layer formation. The coating liquid was coated on an aluminum substrate by dipping the substrate in the coating liquid, and heat-dried at 150° C. for 10 minutes to form an undercoat layer with a thickness of about 0.1 μm on the surface of the substrate.

[0363] Next, 1 part by weight of a hydroxyl group having strong diffraction peaks at Bragg angles (2θ±0.2°) of 7.5°, 9.9°, 12.5°, 16.3°, 18.6°, 25.1° and 28.3° in its X-ray diffraction spectrum Gallium phthalocyanine (HPC-1), 1 part by weight of polyvinyl butyral (S-LEC BM-S produced by Sekisui Chemical Co., Ltd.) and 100 part...

Embodiment 3

[0369] With 100 parts by weight of zinc oxide (the test product produced by TAYCA CORPORATION, the specific surface area is 16m 2 / g, the average particle size is 70nm) and 500 parts by weight of toluene were stirred and mixed, and 1.5 parts by weight of a silane coupling agent (KBM603 produced by Shin-Etsu Chemical Co., Ltd.) was added to the solution and stirred for 2 hours. Then, toluene was removed under reduced pressure, and it was baked at 150° C. for 2 hours. 60 parts by weight of surface-treated zinc oxide, 15 parts by weight of blocked isocyanate (Sumitur 3175 produced by SumitomoBayer Urethane) and 15 parts by weight of butyral resin (S-LEC BM-1 produced by Sekisui Chemical Co., Ltd.) ) is dissolved in 85 parts by weight of methyl ethyl ketone. 38 parts by weight of the resulting solution were mixed with 25 parts by weight of methyl ethyl ketone, and dispersed together with 1 mmΦ glass beads therein in a sand mill for 2 hours to prepare a dispersion liquid. To the ...

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Abstract

An electrophotographic photoreceptor comprising: a conductive support; and a photosensitive layer, wherein the photosensitive layer comprises a first functional layer comprising a cured product of a composition that contains a compound represented by formula (I), in formula (I) wherein F represents n valence orgnic groups with cavity transporting; R respresents univalence orgnic groups; L respresents alkylene groups; n respresents integer of 1-4.

Description

technical field [0001] The present invention relates to an electrophotographic photoreceptor, a process cartridge, and an image forming apparatus. Background technique [0002] Recently, with the technical development of the constituent parts and systems of the electrophotographic image forming apparatus, the electrostatic A large number of improvements have been made in photographic imaging equipment to achieve high-speed, long-life operability. Thus, the demand for high-speed operability and high reliability of each subsystem of the equipment has greatly increased than before. In particular, the photoreceptor for writing images thereon and the cleaning member for cleaning the photoreceptor receive more stress than any other parts due to their mutual sliding, and are often scratched, worn or damaged resulting in Image defects. Thus, the requirements for high-speed operability and high reliability of these two devices are stricter than any other devices. [0003] On the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G5/04G03G21/18G03G15/00
CPCG03G2215/00957G03G5/14708G03G5/0614G03G5/0696G03G5/06G03G5/06142
Inventor 岩崎真宏额田克己山田涉本乡和哉
Owner FUJIFILM BUSINESS INNOVATION CORP