G - Physics – 03 – G
Patent
G - Physics
03
G
96/77
G03G 5/06 (2006.01) G03G 5/07 (2006.01) G03G 17/04 (2006.01)
Patent
CA 1093884
PHOTOSENSITIVE COMPOSITION FOR PHOTOELECTROPHORETIC IMAGING SYSTEMS ABSTRACT OF THE DISCLOSURE Photosensitive composition for use in photoelectro- phoretic imaging system. The particulate component of this composition includes vanadyl phthalocyanine pigment particles which have been treated with a polymer having structural units of the formula Image wherein Z is a pendant group of the formula Image or Image 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. The intimate association of at least some of the polymer with at least some of the vanadyl phthalocyanine pigment is believed to effectively attenuate photoinjection of holes from the phthalocyanine pigment into the surrounding materials thereby both reducing the Dmin of the phthalocyanine pigment; and, to improve color separation of reproductions prepared by processes employing a subtractive color system.
272697
Carreira Leonard M.
Forest Edward
Grushkin Bernard
Sim & Mcburney
Xerox Corporation
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