Xerox Corporation

Nancy A Listigovers

Trevor I Martin

Gordon K Hamer

Kathleen M Carmichael

Sharon E Normandin

Paul Joseph Gerroir

John A Creatura

Thomas Edward Enright

Michael F Cunningham

Donald P Sullivan

Marcel Philippe Breton

Stephan V Drappel

Hadi K Mahabadi

James Daniel Mayo

Cheng-Kuo Hsiao

Richard P Veregin

Michael K Georges

Tie Hwee Ng

Giuseppa Baranyi

Terry L Bluhm

Gerald R Allison

Fatima M Pontes

Cheng K Hsiao

Fernando Perez Yulo

Charles G Allen

Maria V McDougall

Kayong K Koch

Conductive polymeric particles can be formed by mixing a monomer, carbon black and a block copolymer, wherein the block copolymer contains an A block that is miscible with said monomer and a B block that anchors to the surface of the carbon black, such as polystyrene or a derivative of polystyrene. A polymerization initiator is added to the mixture and bulk polymerization is effected until about 5 to about 30 weight percent of the monomer has been polymerized. This partially polymerized product is then dispersed in water and further polymerized.

Conductive particles containing carbon black and processes for the

An ionographic process which comprises the generation of a latent image comprised of characters; developing the image with an encapsulated magnetic toner comprised of a core comprised of a polymer and magnetite and wherein the core is encapsulated within a polymeric shell; and subsequently providing the developed image with magnetic ink characters thereon to a reader/sorter device.

Magnetic image character recognition processes with encapsulated toners

An aqueous ink jet ink composition comprising pigment, water, and an (A.sub.n -B.sub.m) block copolymer wherein n represents the degree of polymerization of A and m represents the degree of polymerization of B, wherein A is styrene, and B is acrylic acid.

Ink compositions

A photoconditive imaging member comprised of a supporting substrate, a photogenerating layer comprised of a photogenerating pigment, or photogenerating pigments dispersed in a polystyrene/poly(methacrylic acid) (A.sub.n -B.sub.m) block copolymer wherein A is the anchoring block, B is the steric stabilizing block, and n and m represent the number of segments; and a charge transport layer.

Hydroxygallium phthalocyanine pigments with block copolymer binders

A process for the preparation of a photogenerating composition which comprises mixing titanyl phthalocyanine Type IV with the AB block copolymer polystyrene-4-vinyl pyridine in a suitable solvent.

Imaging member processes

A photoconductive imaging member comprised of a supporting substrate, a photogenerating layer comprised of photogenerating pigments dispersed in a polystyrene/polyvinyl pyridine (A.sub.n -B.sub.m) block copolymer wherein n represents the degree of polymerization of A and m represents the degree of polymerization of B, and a charge transport layer.

Photoconductive imaging members with polymer binders

Disclosed is a toner composition comprised of pigment particles and monovinyl aromatic terpene copolymer resin particles, and more specifically styrene terpene copolymer resins.

Toner compositions with styrene terpene resins

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 cold pressure fixing toner composition comprised of a core containing a polymer component and magnetic pigment particles, and wherein the core is encapsulated within a shell comrised of the interfacial polycondensation reaction of a first polyisocyanate component and a second amine component, which toner includes thereon an electroconductive material obtained from a water based dispersion of said material in a polymeric binder, said first polyisocyanate component being selected from the group consisting of PAPI 27, PAPI 135, PAPI 94, PAPI 901, Isonate 143L, Isonate 181, Isonate 125M, Isonate 191, and Isonate 240; and said second amine component selected from the group consisting of ethylenediamine, tetramethylenediamine, pentamethylenediamine, hexamethylenediamine, p-phenylenediamine, m-phenylenediamine, 2-hydroxy trimethylenediamine, diethylenetriamine, triethylenetetraamine, tetraethylenepentaamine, 1,8-diaminooctane, xylylene diamine, bis(hexamethylene)triamine, tris(2-aminoethyl)amine, 4,4'-methylene bis(cyclohexylamine), bis(3-aminopropyl)ethylene diamine, 1,3-bis(aminomethyl)cyclohexane, 1,5-diamino-2-methylpentane piperazine, 2-methylpiperazine, 2,5-dimethylpiperazine, and 1,4-bis(3-aminopropyl)piperazine.

Single component cold pressure fixable encapsulated toner compositions

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Oakville, Canada

Nancy A Listigovers