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Electrophotography photoreceptor

一种电子照相、感光体的技术，应用在光学、电记录术、仪器等方向，能够解决缺乏耐久性、感光度低等问题，达到抑制影像模糊、分散性优异的效果

Active Publication Date: 2007-03-14
KYOCERA DOCUMENT SOLUTIONS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, conventional electrophotographic photoreceptors have problems of low sensitivity and lack of durability.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific example 1

[0174] Specific examples of the hole transport agent include compounds represented by the following general formulas (17) to (20).

[0175]

[0176] In general formula (17), R 1a ~R 12a Each independently, is a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group with 1 to 12 carbon atoms, a substituted or unsubstituted alkoxy group with 1 to 12 carbon atoms, or a substituted or unsubstituted carbon atom An aryl group with 6 to 30 carbon atoms, a substituted or unsubstituted alkenyl group with 6 to 30 carbon atoms, and -OR 13a (R 13a A group represented by an alkyl group with 1 to 10 carbon atoms, a perfluoroalkyl group, or an aryl group with 6 to 30 carbon atoms), R 1a ~R 5a , R 6a ~R 10a , R 11a and R 12a Two substituents can be connected to each other to form a saturated or unsaturated ring, Ar 1a is a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 12 carbon atoms, a substituted or unsubstituted aryl group having 6 to ...

specific example 2

[0195] In addition, specific examples of the hole transport agent include compounds (HTM-1 to 4) represented by the following formulas (21) to (24).

[0196]

[0197]

[0198] (2)-4 addition amount

[0199] It is characterized in that the addition amount of the hole transport agent is set to a value within the range of 1 to 100 parts by weight with respect to 100 parts by weight of the binder resin.

[0200] The reason is that if the amount of the hole transport agent added is less than 1 part by weight, the sensitivity characteristics of the photoreceptor layer may not be maintained after predetermined continuous printing.

[0201] On the other hand, if the amount of the hole transport agent added exceeds 100 parts by weight, it may be difficult to mix and disperse uniformly or crystallize easily.

[0202] Therefore, with respect to 100 parts by weight of the binder resin, the amount of the hole transport agent to be added is more preferably within a range of 5 to 80 p...

Embodiment 1

[0301] 1. Fabrication of Electrophotographic Photoreceptor

[0302] On the conductive support, an intermediate layer, a charge generating layer, and a charge transporting layer were sequentially formed to prepare the laminated electrophotographic photoreceptor of Example 1.

[0303] (1) Formation of the middle layer

[0304] The intermediate layer was formed as follows. Using a paint shaker, 2.5 parts by weight of titanium oxide (surface-treated with MT-02, alumina, silica, and silicone, with a number-average primary particle diameter of 10 nm (manufactured by TAYCA)) was added, and a quaternary copolymerization 1 part by weight of polyamide resin CM8000 (manufactured by TORAY Corporation), 10 parts by weight of methanol as a solvent, and 2.5 parts by weight of n-butanol were dispersed for 10 hours, and then filtered through a 5-micron filter to prepare a coating for the intermediate layer. cloth liquid.

[0305] Next, one end of an aluminum substrate (supporting substrate)...

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PUM

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Abstract

An electrophotographic photoconductor where generation of cracks, crystallization of a photosensitive layer, and the like occur infrequently by sticking of finger oil. An electrophotographic photoconductor includes a conductive substrate on which a photosensitive layer containing at least a chargegenerating agent, a hole transfer agent and a binding resin is provided, wherein the binding resin is comprised of a plurality of polycarbonate resins; and the photosensitive layer contains a biphenyl derivative as a plasticizer component represented by the following general formula (1), wherein, R1 to R10 is respectively independent, is substituted or un-substituted C1-C12 alkyl and the like, R is substituted or un-substituted C1-C12 alkylene and the like.

Description

technical field [0001] The present invention relates to an electrophotographic photoreceptor, and in particular, to an electrophotographic photoreceptor in which occurrence of cracks due to adhesion of finger oil or crystallization of a photosensitive layer and the like are less likely to occur. Background technique [0002] Conventionally, as an electrophotographic photoreceptor used in an image forming apparatus, an organic photoreceptor containing a charge generating agent that generates charges by light irradiation, a charge transporting agent that transports the generated charges, and a composition in which these are dispersed has been widely used. The bonding resin of the material layer, etc. [0003] The following image forming process is carried out: For such an organic photoreceptor, the surface is charged (main charging process), after forming an electrostatic latent image (exposure process), the electrostatic latent image is subjected to toner in a state where a d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G5/04G03G5/06
CPCG03G5/0672G03G5/0614G03G5/0696G03G5/0666G03G5/0517G03G5/0596G03G5/0564G03G5/061443G03G5/06147G03G5/061473
Inventor 东润大坪淳一郎
Owner KYOCERA DOCUMENT SOLUTIONS INC
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