Jacob Pacansky from 6343 Gondola Way, San Jose, CA 95120, Phone: (408) 268-5041

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Jacob Pacansky

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Publications

Us Patents

Electrophotographic Photoconductor Contains Ordered Copolyester Polycarbonate Binder

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US Patent:

51302152, Jul 14, 1992

Filed:

Sep 28, 1990

Appl. No.:

7/590094

Inventors:

James M. Adley - Mantorville MN
Vernon M. Balthis - Boulder CO
Dean S. Ehn - Boulder CO
Ralph F. Fox - Boulder CO
Jacob Pacansky - San Jose CA
Robert L. Vollmer - Boulder CO
Robert J. Waltman - Gilroy CA

Assignee:

Lexmark International, Inc. - Greenwich CT

International Classification:

G03G 505

US Classification:

430 58

Abstract:

A layered electrophotographic photoconductor is disclosed having a ground plane layer, a charge generating layer carried by the ground plane layer, and a charge transport layer carried by the charge generating layer. The polymeric binder material of the charge transport layer and the charge generation layer comprises an ordered copolyestercarbonate whose ester content is in the range of about 35 wt. % to about 70 wt. %, of which about 60 wt. % to about 70 wt. % is preferred, and of which about 70 wt. % is the most preferred. The charge generating molecule is a squarylium, and more specifically 2,4-bis-(4-dimethylamino-2-hydroxyphenyl) cyclobutene diylium-1,3-diolate (OHSQ), or an operative phthalocyanine compound, and preferably oxytitanium phthalocyanine. The charge transporting molecule is a hydrazone, and more specifically 4-diethylaminobenzaldehyde-1,1-diphenylhydrazone (DEH), or 4-diphenylaminobenzaldehyde-1,1-diphenylhydrazone (TPH).

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