Photoconductive imaging members with polyurethane hole transport

Details Photoconductive imaging members with polyurethane hole transport Photoconductive imaging members with polyurethane hole transport

1989-04-03

1991-01-08

Welsh, David

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

Radiation-sensitive composition or product

528 85, 252500, 430 96, G03G 514

Patent

active

049834827

ABSTRACT:
A layered photoresponsive imaging member comprised of a photogenerating layer, and in contact therewith a hole transporting layer comprised of charge transport polyurethanes of the following formula, optionally doped with a charge transport compound, or optionally dispersed in an inert resinous binder: ##STR1## wherein A, B and Z are independently selected from the group of bifunctional linkages; R is an alkyl or aryl group; Ar is an aryl or substituted aryl group; x and y represent the mole fractional numbers of the polyurethane structural composition units, subject to the provision that x is greater than 0 and that the sum of x and y is equal to 1.0; and n represents the number of repeating segments.

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patent: 4226967 (1980-10-01), Tazuke et al.
patent: 4293630 (1981-10-01), Oka
patent: 4801517 (1989-01-01), Frechet et al.
patent: 4806443 (1989-02-01), Yanus et al.
patent: 4806444 (1989-02-01), Yanus et al.
patent: 4937165 (1990-06-01), Ong

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