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CHARGE RECEPTOR FOR COLOR ELECTROSTATOGRAPHY

IP.com Disclosure Number: IPCOM000026451D
Original Publication Date: 1992-Feb-29
Included in the Prior Art Database: 2004-Apr-05
Document File: 2 page(s) / 136K

Publishing Venue

Xerox Disclosure Journal

Abstract

A development system has been conceived involving external voltage manipulation between development stages for single pass development with perfect registration of up to four colors derived from toner which might be magnetic and thus opaque. This system utilizes a charge acceptor (photoreceptor or electroreceptor) with a patterned back electrode. In Figure 1, a partial plan view of a charge acceptor having a patterned back eiectrode is illustrated which comprises a series of parallel conductive lines A, B, C, and D aligned on a electrically insulating support, the lines being perpendicular to the process direction. The lines A, B, C, and D are interdigited at the sides of the charge receptor, thus forming, for example, four sets of development lines. These lines are addressed electrically by making contact with suitable electrical contacts, e.g., stationary carbon fiber brushes (not shown). Alternatively, lines are voltage addressed in a manner not requiring mechanical contact by using suitable optoelectronic devices which are incorporated at the end of each line and which connect the lines of a given set (A, B, C, or D) to a cornrnon voltage manifold (not shown). The line sets can be formed by any suitable technique such as a lithographic or laser delineation process and are so configured that each set can be addressed separately. Figure 2 shows a cross-sectional view of the charge acceptor structure with lines A, B, C, and D supported by an insulating substrate. These electrically conductive lines are covered with an insulator or a photoinsulator in the imaging region. Charge is image-wise applied to the surface of this insulator by any suitable and conventional electrophotographic or electrographic technique. The surface, bearing the resulting electrostatic latent image is sequentially developed at development zones A, B, C and D adjacent the imaging surface of the charge acceptor.

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XEROX DISCLOSURE JOURNAL

CHARGE RECEPTOR FOR COLOR ELECTROSTATOGRAPHY
F. Jansen
I. Chen
R. Anderson
B. E. Springett

Proposed Classification US. C1.430/047
Int.
C1. G03g 13/01

4+ tt

00

AB FIG. 1 clo CD

FIG. 2

B C

FIG. 3

D

XEROX DISCLOSURE JOURNAL - Vol. 17, No. 1 JanuaryIFebruary 1992 33

[This page contains 1 picture or other non-text object]

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CHARGE RECEPTOR FOR COLOR ELECTROSTATOGRAPHY

(Cont 'd)

A development system has been conceived involving external voltage manipulation between development stages for single pass development with perfect registration of up to four colors derived from toner which might be magnetic and thus opaque. This system utilizes a charge acceptor (photoreceptor or electroreceptor) with a patterned back electrode. In Figure 1, a partial plan view of a charge acceptor having a patterned back eiectrode is illustrated which comprises a series of parallel conductive lines A, B, C, and D aligned on a electrically insulating support, the lines being perpendicular to the process direction. The lines A, B, C, and D are interdigited at the sides of the charge receptor, thus forming, for example, four sets of development lines. These lines are addressed electrically by making contact with suitable electrical contacts, e.g., stationary carbon fiber brushes (not shown). Alternatively, lines are voltage addressed in a manner not requiring mechanical contact by using suitable optoelectronic devices which are incorporated at the end of each line and which connect the lines of a given set (A, B, C, or D) to a cornrnon voltage manifold (not shown). The line sets can be formed by any suitable technique such as a lithographic or laser delineation process and are so configured that each set can be addressed separately. Figure 2 shows a cross-sectional view of the charge acceptor structure with lines A, B, C, and D supported by an insulating substrate. These electrically conductive lines are covered with an insulator or a photoinsulator in the imaging region. Charg...