Xerox Corporation

Rafik O Loutfy

Ah-Mee Hor

Giuseppa Baranyi

Gregory J Kovacs

Zoran D Popovic

Cheng-Kuo Hsiao

Man C Tam

Peter Michael Kazmaier

William W Limburg

Jean M Frechet

Dasarao K Murti

Sylvie Gauthier

Nan-Xing Hu

Santokh Singh Badesha

John F Yanus

Yu Qi

James McConnell Duff

Dale S Renfer

Thomas W Smith

T Brian McAneney

George Liebermann

Gordon K Hamer

Carol A Jennings

James Harry Sharp

Beng S Ong

Barkev Keoshkerian

Karen Ann Moffat

Damodar M Pai

Kathleen M Carmichael

Joseph C Mammino

Hadi K Mahabadi

Sandra J Gardner

Timothy P Bender

John W Spiewak

Richard P Veregin

Michael K Georges

Donald S Sypula

Milan Stolka

John Graham

T Hwee Ng

Richard A Burt

Arnold L Pundsack

Cheng K Hsiao

Donald J Teney

Deborah J Nichol-Landry

Emery G Tokoli

Paul S Vincett

Philip H Soden

Brian D Lesser

Michael G Taylor

Alan John Toth

Eric M Peters

Ah M Hor

Ronald Forstinger

Christopher Rodgers

Hany M Aboushaka

Judith P Meester

Lloyd F McIntyre

Steven Bloembergen

A surface-grafted material having an inorganic material, a linking group, and a charge transport moiety capable of transporting holes or electrons, and the charge transport moiety is grafted to a surface of the inorganic material via the linking group.

Inorganic material surface grafted with charge transport moiety

An imaging member includes a substrate, a charge transport layer, a charge generator layer, and a charge transporting or photoconductive overcoating layer.

Positive charging photoreceptor

An imaging member with a surface-grafted material having an inorganic material, a linking group, and a charge transport moiety capable of transporting holes or electrons, and the charge transport moiety is grafted to a surface of the inorganic material via the linking group, and further, an image forming apparatus having the imaging member.

Imaging member having inorganic material filler surface grafted with charge transport moiety

Disclosed is a process for preparing copolymers which comprises, in the order stated: (1) adding monomers containing unsaturated carbon-to-carbon bonds, a first polymerization initiator, a second polymerization initiator, and a solvent to a reaction vessel; (2) purging the resulting solution with an inert gas; (3) sealing the reaction vessel and pressurizing it by addition of an inert gas to a pressure of from about 20 to about 600 kilopascals over ambient atmospheric pressure; (4) maintaining the temperature within the pressurized reaction vessel at a temperature of from about 50 to about 100.degree. C. for a period of from about 60 to about 300 minutes; (5) thereafter maintaining the temperature within the pressurized reaction vessel at a temperature of from about 80 to about 115.degree. C. for a period of from about 30 to about 300 minutes, wherein the temperature in step (5) is higher than the temperature in step (4); and (6) subsequently maintaining the temperature within the pressurized reaction vessel at a temperature of from about 115 to about 160.degree. C. for a period of from about 30 to about 180 minutes, wherein the temperature in step (6) is higher than the temperature in step (5). Polymers prepared according to the process of the present invention can be particularly useful in migration imaging members.

Processes for preparing copolymers

A free radical polymerization process for the preparation of polymer comprising:

Stable free radical polymerization processes and compositions thereof

A process for the preparation of photogenerating pigments which comprises the sublimation of a pelletized crude photogenerating pigment at a temperature of from about 250.degree. to about 500.degree. C.; depositing the sublimate onto a substrate; subsequently increasing the sublimation temperature by from about 10.degree. to about 100.degree. C. above the first sublimation temperature, and depositing the resulting sublimate onto a substrate.

Processes for the preparation of photogenerating compositions

Disclosed is a migration imaging member comprising a substrate, an infrared or red light radiation sensitive layer comprising a pigment predominantly sensitive to infrared or red light radiation, and a softenable layer comprising a softenable material, a charge transport material, and migration marking material predominantly sensitive to radiation at a wavelength other than that to which the infrared or red light radiation sensitive pigment is sensitive contained at or near the surface of the softenable layer. When the migration imaging member is imaged and developed, it is particularly suitable for use as a xeroprinting master and can also be used for viewing or for storing data.

Infrared or red light sensitive migration imaging member

A polyarylamine polymer represented by formula ##STR1## wherein: n is between about 5 and about 5,000, or 0 if p&gt;0,

Polyarylamine polymers

Disclosed is a printing plate precursor which comprises a base layer, a layer of photohardenable material, and a layer of softenable material containing photosensitive migration marking material. Alternatively, the precursor can comprise a base layer and a layer of softenable photohardenable material containing photosensitive migration marking material. Also disclosed are processes for preparing printing plates from the disclosed precursors.

Camera speed printing plate with in situ mask

An electrostatographic imaging member comprising a support layer and at least one electrophotoconductive layer, said imaging member comprising a polyarylamine polymer represnted by the formula: ##STR1## wherein: n is between about 5 and about 5,000 or 0 if p&gt;0,

Electrophotographic imaging member utilizing polyarylamine polymers

Disclosed is a xeroprinting process which comprises

Xeroprinting process with improved contrast potential

Disclosed is an improved layered photoresponsive imaging member comprised of a supporting substrate, a vacuum evaporated photogenerator layer comprised of certain fractionaklly sublimed indigoid pigments such as 4,4,7,7'-tetrachlorothioindigo; and an aryl amine hole transport layer comprised of molecules of the following formula: ##STR1## dispersed in a resinous binder and wherein X is selected from the group consisting of halogen and alkyl.

Indigoid photoconductor imaging members

Disclosed is an improved layered photoresponsive imaging member comprised of a vacuum evaporated photogenerator layer comprised of fractionally sublimed quinacridone pigments including 2,9-dichloroquinacridone, and an aryl amine hole transport layer comprised of molecules of the following formula ##STR1## dispersed in a resinous binder, and wherein X is selected from the group consisting of halogen and alkyl.

Quinacridone photoconductor imaging members

A photoresponsive imaging member comprised of a thionated perylene photogeneratoring layer, and a charge transport layer.

Thionated perylene photoconductive imaging members for electrophotography

Disclosed is an improved layered photoresponsive imaging member comprised of a supporting substrate, a vacuum evaporated photogenerator layer comprised of certain pyranthrone pigments including tribromo-8,16-pyranthrenedione and trichloro-8,16-pyranthrenedione; and an aryl amine hole transport layer comprised of molecules of the following formula: ##STR1## dispersed in a resinous binder and wherein X is selected from the group consisting of halogen and alkyl.

Pyranthrone photoconductor imaging members

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Willowdale, Canada

Rafik O Loutfy