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GENERATOR LAYER FOR MULTI-LAYERED PHOTORECEPTOR

IP.com Disclosure Number: IPCOM000026455D
Original Publication Date: 1992-Feb-29
Included in the Prior Art Database: 2004-Apr-05
Document File: 2 page(s) / 130K

Publishing Venue

Xerox Disclosure Journal

Abstract

A multilayered photoreceptor exhibiting infrared and visible light sensitivity has been prepared that contains a generator layer comprising trigonal selenium particles, vanadyl phthalocyanine particles and a styrene butadiene copolymer resin binder. The multilayered photoreceptor may be prepared, for example, by first milling trigonal selenium particles with a styrene butadiene copolymer resin and vanadyl phthalocyanine particles with a styrene butadiene copolymer resin separately for different periods of time and then combining the milled dispersions to form a mixed pigment charge generator layer dispersion.

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XEROX DISCLOSURE JOURNAL

GENERATOR LAYER FOR MULTI- LAYERED PHOTORECEPTOR US. C1.430/078 Susan Robinette
Anita P. Lynch
Thomas R. Hoffend
Edward F. Grabowski
Kathleen Carmichael

Proposed Classification

Int. C1. G03g 5/00

A multilayered photoreceptor exhibiting infrared and visible light sensitivity has been prepared that contains a generator layer comprising trigonal selenium particles, vanadyl phthalocyanine particles and a styrene butadiene copolymer resin binder. The multilayered photoreceptor may be prepared, for example, by first milling trigonal selenium particles with a styrene butadiene copolymer resin and vanadyl phthalocyanine particles with a styrene butadiene copolymer resin separately for different periods of time and then combining the milled dispersions to form a mixed pigment charge generator layer dispersion.

The styrene butadiene copolymer resin is a solvent soluble copolymer with about 8535 to about 955 weight percent styrene to butadiene content, having a T range of from about 50°C to 60°C. The resin M, may range from about 50,800 to about 200,000 with a M,/M, of between about 3 and about 8. The mixed pigment charge generator layer dispersion may be applied to a suitable layer such as a charge transport layer, a conductive layer, a blocking layer overlying a conductive layer or an adhesive layer overlying either a blocking layer or a conductive layer. The mixed pigment charge generator layer dispersion may be applied by any suitable technique such as a draw bar. Any suitable thickness may be selected for the charge generator layer. Generally, the thickness of the charge generator layer ranges from about 0.2 to 5 micrometers. A typical dried charge generator layer thickness is about 2 micrometers. If the mixed pigment charge generator layer dispersion is applied to a suitable substrate such as a conductive layer, a blocking layer overlying a conductive layer or an adhesive layer overlying either a blocking layer or a conductive layer, a charge transport layer may be applied over the charge generator layer. The charge transport layer may be of any suitable thickness. Generally, the thickness of the charge transpor...