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PHOTOACTIVE IMAGING PARTICLE

IP.com Disclosure Number: IPCOM000024586D
Original Publication Date: 1981-Feb-28
Included in the Prior Art Database: 2004-Apr-02
Document File: 2 page(s) / 48K

Publishing Venue

Xerox Disclosure Journal

Abstract

A photoactive agglomerate particle is prepared which exhibits a sharp action spectrum. The particle comprises a colorant dye located in a central core and surrounded by a layer of clear carrier. The clear carrier is, in turn, surrounded by dye sensitized organic photoconductor material, such as polyvinyl carbazole dyed with 1 percent (by weight) Rhodamine B dye. The encapsulation of the colorant in the central core isolates it from the polyvinyl carbazole and prevents the dye from broadly sensitizing the photoresponse of the particle. Subsequent to image formation, the colorant in the central core is dispersed into the supporting substrate of the imagewise arranged particulate layer. Such a particle may be constructed by spray drying or sequential agglomeration of the colorant material in a carrier followed by encapsulation by the photosensitive material.

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XEROX DISCLOSURE JOURNAL

PHOTOACTIVE IMAGING PARTICLE Proposed Ray H. Luebbe, 3. Classification

U.S. Cl. 430/56

Int. C1. G03g 5/00

A photoactive agglomerate particle is prepared which exhibits a sharp action spectrum. The particle comprises a colorant dye located in a central core and surrounded by a layer of clear carrier. The clear carrier is, in turn, surrounded by dye sensitized organic photoconductor material, such as polyvinyl carbazole dyed with 1 percent (by weight) Rhodamine B dye. The encapsulation of the colorant in the central core isolates it from the polyvinyl carbazole and prevents the dye from broadly sensitizing the photoresponse of the particle. Subsequent to image formation, the colorant in the central core is dispersed into the supporting substrate of the imagewise arranged particulate layer. Such a particle may be constructed by spray drying or sequential agglomeration of the colorant material in a carrier followed by encapsulation by the photosensitive material.

Volume 6 Number 1 January/February 1981 45

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46

   XEROX DISCLOSURE JOLJRNAL Volume 6 Number 1 January/February 1981

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