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Electrophotographic photoconductor containing simple quinones to improve electrical properties

An electrophotography and molecular technology, applied in optics, electrical recording, instruments, etc., can solve problems such as inoperability

Inactive Publication Date: 2002-07-10
LEXMARK INT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patent only cites DEH as a charge transport agent, this material is not operable in the present invention

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Example 1 - Quinone formulated in CGL:

[0061] Photoconductors were prepared as described above, but 0.18 g (4% total solids) of 3,3'-di-tert-butyl-5,5'-dimethyldiphenoquinone was added to the CGL dispersion instead of the equivalent amount of BX -55Z polyvinyl butyral.

Embodiment 2

[0062] Example 2 - Quinone formulated in CGL:

[0063] Photoconductors were prepared as described above, except that 0.18 grams (4% total solids) of duroquinone was added to the CGL dispersion in place of an equivalent amount of BX-55Z polyvinyl butyral.

Embodiment 3

[0064] Example 3 - Quinone formulated in CTL:

[0065] Prepare the photoconductor as described above, but add 0.2 g (1% total solids) or 1.0 g (5% total solids) of 3,3'-di-tert-butyl-5,5'-dimethyldiphenyl to the CTL solution Quinone instead of an equivalent amount of Makrolon 5208 bisphenol polycarbonate

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PUM

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Abstract

A photoconductor for use in electrophotographic reproduction devices is disclosed. The photoconductor provides simultaneous improvement in both photoreceptor sensitivity and fatigue, while also providing higher charge voltage, lower residual voltage and lower dark decay. The photoconductor of the present invention includes simple quinone additives in either the charge generation layer, the charge transport layer, or both layers. Quinone additives are preferably selected from o-quinone, duroquinone, diphenoquinone, naphthaquinone, and mixtures of those materials, with duroquinone and the mixture E+Z 3, 3'-di-t-butyl-5, 5'-dimethyl diphenoquinones being preferred.

Description

field of invention [0001] The present invention relates to a photoconductor for use in electrophotographic reproduction equipment which exhibits improved photoreceptor sensitivity without adversely affecting its cyclic fatigue performance. Background of the invention [0002] The present invention is a layered electrophotographic photoconductor, that is, a photoconductor having a metal substrate element on which a charge generation layer and a charge transport layer are typically coated in this order. Although these layers are usually separated from each other, they can be combined into a single layer that can provide both charge generation and charge transport functions. Such photoconductors may optionally include a barrier layer between the metal substrate element and the charge generation layer, an adhesion promoting layer between the barrier layer (or substrate element) and the charge generation layer, and / or a barrier layer between the charge transport layer. A topcoat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G5/047G03G5/05G03G5/06
CPCG03G5/0614G03G5/0696G03G5/047G03G5/0517G03G5/061443
Inventor R·H·勒文S·T·莫斯尔
Owner LEXMARK INT INC
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