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Browse Prior Art Database

PHOTORECEPTORS WITH CHARGE TRANSPORTING POLYMERS

IP.com Disclosure Number: IPCOM000027093D
Original Publication Date: 1995-Apr-30
Included in the Prior Art Database: 2004-Apr-07
Document File: 4 page(s) / 111K

Publishing Venue

Xerox Disclosure Journal

Abstract

Disclosed are photoreceptor structures employing charge transporting polymers for use in electrophotographic imaging members and devices. The imaging members in embodiments comprise a substrate with a charge injecting surface 2, a layer comprising a charge transporting polymer 3, a charge generating layer 4, a charge trapping layer 5, and a passive overcoat layer 6 as shown in Figure 1.

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XEROX DISCLOSURE JOURNAL

PHOTORECEPTORS WITH CHARGE TRANSPORTING POLYMERS
Damodar M. Pai
Santokh S. Badesha

Proposed Classification
U.S. C1.355/211 Int. C1. G03g 05/00

FIG. 1

XEROX DISCLOSURE jOURNAL - Vol. 20, No. 2 March/April 1995 143

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PHOTORECEPTORS WITH CHARGE TRANSPORTING POLYMERS

(Cont'd)

6 5 413

2

NG. 2

144 XEROX DISCLOSURE JOURNAL - Vol. 20, No. 2 MarchiApril 1995

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PHOTORECEPTORS WITH CHARGE TRANSPORTING POLYMERS

(Cont'd)

Disclosed are photoreceptor structures employing charge transporting polymers for use in electrophotographic imaging members and devices. The imaging members in embodiments comprise a substrate with a charge injecting surface 2, a layer comprising a charge transporting polymer 3, a charge generating layer 4, a charge trapping layer 5, and a passive overcoat layer 6 as shown in Figure 1.

In an alternative embodiment, the imaging member comprises a substrate with a blocking surface 2, a positively chargeable photoconductive layer 4/3
wherein the charge generation and transport molecules are in the same layer, a charge trapping layer 5, and a charge transporting polymer layer 6 as shown in Figure 2. Particularly suitable charge transporting polymers for use in either configuration shown in the Figures are polyethercarbonates (PC) and polysil ylenes.

In electrophotographic imaging applications, the charging steps are as follows. In the first step, the corona places negative charge on top of the overcoat layer. The corresponding positive charges are injected and trapped at the trapping layer. The second step consists of neutralizing the negativ...