Browse Prior Art Database

PHOTOSENSITIVE COMPOSITION USEFUL FOR PHOTOELECTROPHORETIC IMAGING

IP.com Disclosure Number: IPCOM000023586D
Original Publication Date: 1978-Apr-30
Included in the Prior Art Database: 2004-Mar-31
Document File: 2 page(s) / 272K

Publishing Venue

Xerox Disclosure Journal

Abstract

Disclosed are photosensitive compositions which are useful in photoelectrophoretic imaging systems but which also might find use in other systems- The particular material of the compo-sition includes vanadyl phthalocyanine pigment particles which have been treated with a mixture of polymeric materials consisting essentially of at least one polymer having struc-tural units of the formula

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Page 1 of 2

XEROX DISCLOSURE JOURNAL

PHOTOSENSITIVE COMPOSITION USEFUL Proposed Classification
FOR PHOTOELECTROPHORETIC IMAGING U~S. Cl. 96/l~2
Richard H. Nealy Int~ Cl. G03g 5/12

Disclosed are photosensitive compositions which are useful in
photoelectrophoretic imaging systems but which also might find
use in other systems~ The particular material of the compo~
sition includes vanadyl phthalocyanine pigment particles which
have been treated with a mixture of polymeric materials
consisting essentially of at least one polymer having struc~
tural units of the formula

H H

-E C

H Z

wherein z is a pendant group of the formula

~or~

(X) (X)

m m

X is a substituent substantially incapable of
withdrawing electrons from the electron rich
pyridinyl moiety;

m is a whole number from 0 to 3; and

n is a whole number in excess of 25;

and, at least one polymer having structural units of the

formula

©~-

H~

Volume 3 Number 2 March/April 1978 91

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

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PHOTOSENSITIVE COMPOSITION USEFUL FOR PHOTOELECTROPHORETIC
IMAGING (Cont~d)

wherein X is vinyl, alpha alkyl substituted vinyl,
or alkyl of 1 to 4 carbon atoms, and

Y is vinyl, alpha alkyl substituted vinyl or alkyl
of 1 to 4 carbon atoms with the proviso that when
only one of either X or Y is vinyl or alpha alkyl
substituted vinyl per structural unite

In a specific embodiment, the invention discloses the treat~
ment of vanadyl phthalocyanine pigments with the mixture of at
least two polymers whereby such...