Photoresponsive imaging members with polyurethane blocking layers
AssigneeXerox Corporation
InventorsHuoy-Jen Yuh, Beng S. Ong, John W. Spiewak, Constance J. Thornton
Life of this patent
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Abstract
An imaging member comprised of an optional supporting substrate; a ground plane layer; a blocking layer; an optional adhesive layer; a photogenerator layer; and a charge transport layer, wherein the blocking layer is comprised of a polyurethane of the formula: ##STR1## wherein A is a trivalent group; A' is a bivalent group; R is selected from the group consisting of alkylene, substituted alkylene, arylene, and substituted arylene; x and y are number mole fractions the sum of which is equal to 1.0.
Claims39
An imaging member comprised of an optional supporting substrate;
- a ground plane layer;
- a blocking layer;
- an optional adhesive layer;
- a photogenerator layer;
- and a charge transport layer, wherein the blocking layer is comprised of a polyurethane of the formula:
- ##STR15## wherein A is a trivalent group;
- A' is a bivalent group;
- R is selected from the group consisting of alkylene, substituted alkylene, arylene, and substituted arylene;
- x and y are number mole fractions the sum of which is equal to 1.0.
An imaging member comprised of a ground plane layer;
- a blocking layer;
- a photogenerator layer;
- and a charge transport layer, wherein the blocking layer is comprised of a polyurethane of the formula:
- ##STR17## wherein A is a trivalent group;
- A' is a bivalent group;
- R is selected from the group consisting of alkylene, substituted alkylene, arylene, and substituted arylene;
- x and y are number mole fractions the sum of which is equal to 1.0.
Dependencies are inferred from the claim text.