Xerox Corporation

Terry L Bluhm

James Daniel Mayo

Cheng-Kuo Hsiao

Ah-Mee Hor

James McConnell Duff

Cheng K Hsiao

Peter Michael Kazmaier

Gordon K Hamer

Trevor I Martin

Kathleen M Carmichael

Jin Wu

Edward F Grabowski

Kent J Evans

Min-Hong Fu

Susan M VanDusen

Terry L Street

Pudupadi R Sundararajan

Denis Desilets

Dasarao K Murti

Giuseppa Baranyi

Hai-Yen T Tran

Guerino G Sacripante

Beng S Ong

Timothy J Fuller

Marcel Philippe Breton

Raj D Patel

Stephan V Drappel

Hadi K Mahabadi

Sandra J Gardner

Zoran D Popovic

Gregory J Kovacs

George Liebermann

Sharon E Normandin

Kar P Lok

Nancy A Listigovers

Robert H Marchessault

B W Yeung

Eric Bain Wasmund

Cheng-Kuo Hsaio

James F Duff

Duff James M

A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and at least one charge transport layer comprised of at least one charge transport component, and wherein the charge transport layer contains a carbazole.

Carbazole containing charge transport layer photoconductors

A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and at least one charge transport layer comprised of at least one charge transport component, and wherein the charge transport layer contains a pyrazine.

Pyrazine containing charge transport layer photoconductors

A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and at least one charge transport layer containing at least one charge transport component, and wherein the charge transport layer also contains a thiadiazole.

Thiadiazole containing charge transport layer photoconductors

A layered photoconductive imaging member comprised of a supporting substrate, a photogenerating layer and a charge transport layer, and wherein the photogenerating layer contains Type IV oxytitanium phthalocyanine obtained by a process which comprises the hydrolysis of a dihalotitanium phthalocyanine in a strong acid.

Oxytitanium phthalocyanine imaging members and processes thereof

A process for the preparation of Type II dihydroxygermanium phthalocyanine which comprises treating dihalogermanium phthalocyanine or dialkoxygermanium phthalocyanine with a strong acid, followed by treatment with water, and subsequent optional washing with an organic base and an aprotic organic solvent.

Hydroxygermanium phthalocyanine processes

A process for the preparation of a more perfect crystalline form of the Type I polymorph of titanyl phthalocyanine which comprises dissolving a precursor titanyl phthalocyanine Type I in a solution of trihaloacetic acid and alkylene chloride; adding the resultant solution to a solvent thereby enabling precipitation of Type X titanyl phthalocyanine; separating the titanyl phthalocyanine Type X from the solution; followed by a first washing with an organic solvent and a second washing with water; slurrying the resulting Type X titanyl phthalocyanine in an organic solvent enabling conversion of said Type X to Type IV titanyl phthalocyanine; and thereafter, subjecting the Type IV titanyl phthalocyanine obtained to treatment with an organic solvent to enable said crystalline form of titanyl phthalocyanine Type I.

Processes for the preparation of titanyl phthalocyanines

A layered photoconductive imaging member comprised of a supporting substrate, a photogenerating layer and a charge transport layer, and wherein the photogenerating layer contains Type IV titanyl phthalocyanine obtained by a process which comprises the addition of an oxytitanium phthalocyanine containing a mixture of Type I and Type II titanyl phthalocyanine polymorphs, or a substantially pure Type II titanyl phthalocyanine polymorph to a solvent comprised of a trihaloacetic acid and an alkylene halide; adding the resultant solution to a mixture which enables precipitation of Type X oxytitanium phthalocyanine; separating the Type X oxytitanium phthalocyanine from the solution; and thereafter subjecting the Type X oxytitanium phthalocyanine obtained to treatment with a halobenzene, followed by the separation of the said Type IV oxytitanium phthalocyanine.

A layered imaging member comprised of a photogenerating layer of titanyl phthalocyanine prepared by depositing amorphous titanyl phthalocyanine on a substrate maintained at a temperature of from below 25.degree. to about minus 30.degree. C.; and contacting the substrate product with an aliphatic alcohol.

Photogenerating titanyl phthalocyanine and processes thereof

Disclosed is the X polymorphic form of titanyl phthalocyanine.

Imaging members containing titanium phthalocyanines

A layered photoconductive imaging member comprised of a supporting substrate, a photogenerating layer comprised of titanyl phthalocyanine photogenerating pigments and thereover a charge transport layer, and wherein said photogenerating pigments are prepared by a process which comprises the formation of a slurry comprised of dihalotitanium phthalocyanine in a mixture comprised of a trihaloacetic acid and an alkylene chloride; adding the resultant slurry to a mixture of an aliphatic alcohol and water enabling hydrolysis whereby Type X oxytitanium phthalocyanine is obtained; separating the Type X oxytitanium phthalocyanine from the slurry; and thereafter subjecting the Type X oxytitanium phthalocyanine obtained to treatment with a halobenzene, followed by the separation of Type IV oxytitanium phthalocyanine photogenerating pigments.

Phthalocyanine imaging members and processes

Disclosed is a composition comprising a thermotropic liquid crystalline polymer and a modifying component selected from the group consisting of plasticizing agents, antiplasticizing agents, small molecule liquid crystalline materials, and mixtures thereof. Also disclosed is a toner composition comprising a thermotropic liquid crystalline resin, a colorant, and a modifying component selected from the group consisting of plasticizing agents, antiplasticizing agents, small molecule liquid crystalline materials, and mixtures thereof.

Modified thermotropic liquid crystalline compositions

An imaging member comprised of a supporting substrate, a photogenerating layer comprised of a titanyl phthalocyanine of the type selected from the group consisting of Type IV, Type X, Type Z-1, and Type Z-2, prepared by the process which comprises dissolving a titanyl phthalocyanine in a solution of trifluoroacetic acid and methylene chloride; adding the resultant solution to a solvent or solvent mixture that will enable precipitation; and separating the product titanyl phthalocyanine from the solution followed by an optional washing, and a charge transport layer.

Imaging member containing titanium phthalocyanines

Toner with well-dispersed component subparticles is prepared by a method wherein an attritor is initially used to disperse the subparticles in a core monomer, and attrition is continued during initial polymerization of the monomer. Interfacial polymerization is then performed in a preferred embodiment to form encapsulated toner particles.

Process for obtaining improved dispersion of components in toner

A process for the preparation of titanyl phthalocyanine which comprises the treatment of titanyl phthalocyanine Type X with a halobenzene.

Processes for preparation of titanyl phthalocyanines type X

A process for the preparation of titanyl phthalocyanine Type I which comprises the reaction of titanium tetraalkoxide and diminoisoindolene in the presence of a halonaphthalene solvent.

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Oakville, Canada

Terry L Bluhm