Robert J Rumery

US Patent:

55454992, Aug 13, 1996

Filed:

Jul 7, 1995

Appl. No.:

8/499147

Inventors:

Vernon M. Balthis - Longmont CO
Ronald A. Merten - Boulder CO
Robert J. Rumery - Longmont CO
Robert L. Vollmer - Boulder CO

Assignee:

Lexmark International, Inc. - Greenwich CT

International Classification:

G03G 547

US Classification:

430 59

Abstract:

A photoconductor for use in electrophotographic reproduction devices is disclosed. This photoconductor exhibits improved oil resistance when used with liquid toners and excellent cycling stability. The photoconductors of the present invention utilize a phthalocyanine dye, particularly an X-form metal-free phthalocyanine, dispersed in a medium molecular weight polyvinyl chloride binder in the charge generating layer, and a charge transport molecule, particularly a hydrazone such as DEH, in a polyestercarbonate binder in the charge transport layer.