Imaging members and processes for the preparation thereof
AssigneeXerox Corporation
InventorsPeter G. Odell, Trevor I. Martin
Life of this patent
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Abstract
A process for the preparation of layered photoconductive imaging members which comprises forming layers comprised of a mixture of cyclic oligomers with degrees of polymerization of from about 2 to about 20 and a catalyst, wherein one layer contains a conductive filler, the second layer contains a photogenerating pigment and the third layer contains charge transporting molecules, and heating said layers to convert the cyclic oligomer mixture in each layer to a polycarbonate resin.
Claims22
An in situ process for the preparation of layered photoconductive imaging members consisting essentially of forming layers comprised of a mixture of cyclic oligomers with degrees of polymerization of from about 2 to about 20 and a catalyst, wherein one layer contains a conductive filler present in a supporting substrate layer, the second layer contains a photogenerating pigment and the third layer contains charge transporting molecules, and heating said layers to convert the cyclic oligomer mixture in each layer to a polycarbonate resin;
- and wherein said cyclic oligomeric mixture is represented by the formula ##STR4## wherein n represents the degree of polymerization and is a number of form 2 to about 20, and R represents the principle repetition unit of the formula ##STR5## wherein R.sub.1, R.sub.2, and R.sub.3 are independently selected from the group consisting of hydrogen, alkyl and aryl, halogen, and halogen substituted alkyl and halogen substituted aryl.
A process for the preparation of layered photoconductive imaging members, which members are comprised of a supporting substrate, a photogenerating layer, and a charge transport layer;
- and wherein the supporting substrate is comprised of a polycarbonate resin and the resinous binder for said photogenerating layer and said charge transport layer is a polycarbonate, the improvement residing in preparing said polycarbonate in situ by heating a mixture of cyclic oligomers with degrees of polymerization of from about 2 to about 20 and a catalyst thereby converting said cyclic oligomers to said polycarbonates and wherein said cyclic oligomer mixture is represented by the following formula ##STR7## where n represents the degree of polymerization and in a number of from 2 to about 20,and R represents the principle repetition unit of the formula ##STR8## wherein R.sub.1, R.sub.2 and R.sub.3 are independently selected from the group consisting of hydrogen, alkyl and aryl, halogen, and halogen substituted alkyl and halogen substituted aryl.
Dependencies are inferred from the claim text.