Xerox Corporation

Angelo J Barbetta

Thomas R Hoffend

Robert D Bayley

Hadi K Mahabadi

Scott M Silence

K Derek Henderson

Carol A Fox

Stephan V Drappel

Michael Steven Hawkins

Enno Eric Agur

Bernard Grushkin

Maria N McDougall

Gerald R Allison

John G VanDusen

Richard D Manca

John A Creatura

T Hwee Ng

Denise Y Wright

Roger N Ciccarelli

Thomas Edward Enright

Hui Chang

John R Laing

Paula J MacLeod

Emery G Tokoli

Charles H Honeyman

Doretta Agostine

A toner comprised of resin, colorant, and a potassium stearate charge enhancing additive.

Toner and developer compositions with charge enhancing additives

A toner containing resin, colorant, and a potassium sorbate, or a potassium tartrate charge enhancing additive.

A composition comprised of a core and thereover a polymer of (1) polystyrene/alkyl methacrylate/dialkylaminoethyl methacrylate, (2) polystyrene/alkyl methacrylate/alkyl hydrogen aminoethyl methacrylate, (3) polystyrene/alkyl acrylate/dialkylaminoethyl methacrylate, or (4) polystyrene/alkyl acrylate/alkyl hydrogen aminoethyl methacrylate.

Coated carrier

A carrier comprised of a core and a polymer coating of (1) styrene/monoalkylaminoalkyl methacrylate or (2) styrene/dialkylaminoalkyl methacrylate.

A carrier comprised of a core and thereover a polymer of (1) methylmethacrylate and a monoalkyl aminoalkyl methacrylate, or (2) a polymer of methylmethacrylate and dialkylaminoalkyl methacrylate.

A carrier comprised of a core and thereover a polymer of styrene, an olefin and a dialkylaminoalkyl methacrylate.

A carrier comprised of a core and a polymer coating containing a quaternary ammonium salt functionality.

Low fix temperature toner resins are fabricated by a reactive melt mixing process wherein polymer resins are cross-linked at high temperature and high shear. The resins are particularly suitable for high speed fusing, show excellent offset resistance and wide fusing latitude and superior vinyl offset properties.

Reactive melt mixing process for preparing cross-linked toner resins and

Reactive melt mixing process for preparing cross-linked toner resin

A low melt toner resin with low minimum fix temperature and wide fusing latitude contains a linear portion and a cross-linked portion containing high density cross-linked microgel particles, but substantially no low density cross-linked polymer. The resin may be formed by reactive melt mixing.

Toners having cross-linked toner resins

A process for the preparation of carrier particles which comprises the dry coating of a carrier or carrier cores with conductive submicron polymeric particles containing from about 1 to about 50 weight percent of conductive fillers, and wherein said conductive polymer particles are prepared by mixing at least one monomer with a polymerization initiator, a crosslinking component and a chain transfer component; effecting bulk polymerization until from about 5 to about 50 weight percent of the monomer has been polymerized; terminating polymerization by cooling the partially polymerized monomer; adding thereto from about 1 to about 50 weight percent of a conductive filler or conductive fillers, followed by mixing thereof; dispersing the aforementioned mixture of conductive filler or fillers, and partially polymerized product in water containing a stabilizing component to obtain a suspension of particles with an average diameter of from about 0.05 to about 1 micron in water; polymerizing the resulting suspension by heating; subsequently washing and drying the product; thereafter heating the carrier core or carrier cores and the resulting conductive polymer particles to enable fusing thereof to said core or cores; and cooling the carrier particles obtained, which particles have a conductivity of from between about 10.sup. -4 to about 10.sup.-10 mho-cm.sup.-1.

Dry carrier coating and processes

A toner composition comprised of resin, pigment particles, and a distearyl dimethyl ammonium hexafluorophosphate charge enhancing additive.

Toner and developer compositions with fluorophosphate charge enhancing

A process for the preparation of conductive submicron polymeric particles which comprises mixing at least one monomer with a polymerization initiator, a crosslinking component and a chain transfer component; effecting bulk polymerization until from about 10 to about 50 weight percent of the monomer has been polymerized; terminating polymerization by cooling the partially polymerized monomer; adding thereto from about 1 to about 50 weight percent of a conductive filler, or conductive fillers, followed by mixing thereof; dispersing the aforementioned mixture of conductive filler or fillers, and partially polymerized product in water containing a stabilizing component to obtain a suspension of particles with an average diameter of from about 0.05 to about 1 micron in water; polymerizing the resulting suspension by heating; and subsequently washing and drying the product.

Conductive composite particles and processes for the preparation thereof

Cross-linked toner resins

Developer compositions with toner compositions comprised of suspension polymerized styrene butadiene polymers, pigment particles, magnetites, and charge enhancing additives; and carrier components comprised of a carrier core with a coating thereover comprised of a polymer mixture with from about 10 to about 90 percent by weight of a first polymer, and from about 90 to about 10 percent by weight of a second polymer, which first and second polymers are not in close proximity in the triboelectric series.

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Penfield, NY, United States of America

Angelo J Barbetta