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Composition for overcoat layer of organophotoreceptor, organophotoreceptor manufactured by employing the same and the electrophotographic imaging apparatus containing the same

an organophotoreceptor and overcoat layer technology, which is applied in the direction of electrographic process, instruments, coatings, etc., can solve the problems of organophotoreceptors that are easy to wear, reduce the thickness of organophotoreceptors, and reduce the lifetime of organophotoreceptors, so as to improve electrical, mechanical and mechanical properties, the effect of increasing the lifetime of the organophotoreceptor

Inactive Publication Date: 2006-06-29
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a composition for an overcoat layer of an organophotoreceptor that can improve its electrical and mechanical properties, as well as increase its lifetime. The composition includes polyaminoether, an electron transport material, and an alcoholic solvent. The overcoat layer has a thickness of 0.01 to 5 μm and may be a single layer or a double layer. The invention also provides an electrophotographic imaging apparatus comprising a support roller and an organophotoreceptor operably coupled to the support roller with motion of the support rollers resulting in motion of the organophotoreceptor.

Problems solved by technology

An organophotoreceptor may be easily worn due to friction between toner and a roller or a cleaning blade, which decreases the thickness of the organophotoreceptor, resulting in a reduction in lifetime.

Method used

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  • Composition for overcoat layer of organophotoreceptor, organophotoreceptor manufactured by employing the same and the electrophotographic imaging apparatus containing the same
  • Composition for overcoat layer of organophotoreceptor, organophotoreceptor manufactured by employing the same and the electrophotographic imaging apparatus containing the same
  • Composition for overcoat layer of organophotoreceptor, organophotoreceptor manufactured by employing the same and the electrophotographic imaging apparatus containing the same

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example 1

[0068] A charge transport layer was formed as follows: 2 g of a hydrazone-based charge transport material (of the following formula synthesized from U.S. Pat. No. 6,066,426), and 2 g of polycarbonate (PCZ200, Mitsubishi Chemical, Japan) were dissolved in 16 g of tetrahydrofuran (THF), the solution was then filtered using a syringe filter having a pore size of 1 μm, and coated on an aluminum drum at a speed of 300 mm / min using a ring coater, giving a charge transport layer having a thickness of approximately 8 μm.

[0069] Next, a charge-generating layer is formed as follows. 0.84 g of polyvinylbutyral (BX-1, available from SEKISUI CO., Japan) was dissolved in 17.2 g of ethanol, and then 1.96 g of titanyloxy phthalocyanine (TiOPc, available from H.W. SANDS), as a charge generating material, was mixed to the solution. This mixture was milled in an attrition miller for 1 hour. 4.29 g of the resulting milled dispersion was diluted with 10.1 g of butylacetate and 0.63 g of ethanol and fil...

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Abstract

A composition for an overcoat layer suitable for use in an organophotoreceptor for liquid toner, an organophotoreceptor manufactured by employing the composition and an electrophotographic imaging apparatus containing the organophotoreceptor. Since the organophotoreceptor can maintain higher charge potential and low residual or discharge potential, the lifetime of the organophotoreceptor can be extended. Also, since the organophotoreceptor has good solvent resistance and abrasion resistance, it can be advantageously used for liquid toner.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application is a divisional application of co-pending application Ser. No. 10 / 681,324 filed Oct. 9, 2003, now pending, and claims the benefit of Korean Patent Application No. 2002-61490, filed Oct. 9, 2002, in the Korean Intellectual Property Office, the disclosures of which are incorporated herein by reference.BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The present invention relates to a composition for an overcoat layer of an organophotoreceptor, an organophotoreceptor manufactured by employing the same and an electrophotographic imaging apparatus containing the same. More specifically, the invention relates to a composition for an overcoat layer suitable for use in an organophotoreceptor for liquid toner, the composition having good electrical properties and increased abrasion resistance and adhesion to extend the lifetime of an organophotoreceptor. The present invention also relates to an organophotorece...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C08G18/08G03G5/00G03G5/147G03G5/043G03G5/05G03G5/06G03G5/14G03G15/04
CPCC08K5/315G03G5/043G03G5/051G03G5/0514G03G5/0525G03G5/0567G03G5/0571G03G5/0575G03G5/0589G03G5/0607G03G5/14708G03G5/1473G03G5/1476G03G5/14769G03G5/14786C08L79/02G03G5/14
Inventor LEE, NAM-JEONGYOKOTA, SABUROYON, KYUNG-YOLLEE, HWAN-KOOJOO, HAE-REEKIM, BOOM-JUN
Owner SAMSUNG ELECTRONICS CO LTD
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