Xerox Corporation

Palo Alto Research Center Inc.

Raj D Patel

Michael A Hopper

Grazyna E Kmiecik-Lawrynowicz

Guerino G Sacripante

Walter Mychajlowskij

Beng S Ong

Daniel A Foucher

Edward Graham Zwartz

T Hwee Ng

David J Sanders

Daryl Walter Vanbesien

Allan K Chen

Stephan V Drappel

Naveen Chopra

Patricia Ann Burns

Valerie M Farrugia

Cuong Vong

Kimberly D Nosella

Richard P Veregin

Peter Michael Kazmaier

Nan-Xing Hu

Sandra J Gardner

Enno Eric Agur

Melvin D Croucher

Fatima M Mayer

Karen Ann Moffat

Paul Joseph Gerroir

H Bruce Goodbrand

Timothy L Lincoln

Lu Jiang

Sonja Hadzidedic

Kevin F Marcell

Louis V Isganitis

Francisco E Torres

James Wojtyk

Erwin Buncel

Marcel Philippe Breton

Barkev Keoshkerian

Hadi K Mahabadi

Paul Farrell Smith

Maria N V McDougall

Kurt I Halfyard

Emily Louise Moore

Maria N McDougall

Milan Maric

Arthur Helbrecht

Richard P N Veregin

James McConnell Duff

Meng H Lean

Jurgen Hans Daniel

T Brian McAneney

Bernard Grushkin

Man-Chung Tam

Anthony J Paine

Danielle C Boils

Joseph August Bartel

Christine Deborah Anderson

Grazyna Kmiecik-Lawrynowicz

Maria V McDougall

Hock S Tan

Beverly C Dutoff

Lori Ann Rettinger

Tanya Jane Martin

Allen K Chen

Joseph Bartel

Peter Gordon Odell

Chieh-Min Cheng

Ke Zhou

Michael Steven Hawkins

Armin R Volkel

George Amos Gibson

Scott M Silence

Vladislav Skorokhod

Michael K Georges

Ronald F Ziolo

Tie Hwee Ng

Alan Richard Kuntz

Terry L Bluhm

David R Kurceba

James M Proper

Danielle C Boils-Boissier

Wafa Faisul Bashir

Eric M Strohm

Edward C Hanzlik

Garland J Nichols

Robert N Jones

Biritawit Asfaw

Edward J Radigan

Susan Robinette

William J Dale

Joseph D Wright

Lurdes M Martins

Mike Hawkins

Barkey Keoshkerian

Ed Zwartz

Rick Veregin

Shigang (Steven) Qiu

Nam-Suk Ro

Grazyna Kmiecik-Lawrynowica

Maureen M Kedian

In accordance with the invention, there is a method of forming a toner. The method can include blending two or more colorants to form a sample toner and forming a sample color specimen including a printed image comprising the sample toner. The method can further include comparing spectral distribution curves of the sample color specimen with that of a target color specimen including a target color and repeating the disclosed steps until acquiring a desired spectral match between the sample toner and the target color.

Process for producing dry ink colorants that will reduce metamerism

The present disclosure relates to a toner process comprising providing a resin miniemulsion comprising polymeric particles comprising at least one free radical polymerizable monomer compound and at least one alkylene anhydride; blending the miniemulsion with at least one colorant, at least one amine, and optionally at least one wax; heating the resulting mixture below or about equal to the glass transition temperature (Tg) of the resin emulsion; and heating the resulting mixture above or about equal to the glass transition temperature (Tg) of the resin emulsion.

Toner process

The present disclosure relates to a process for latex preparation comprising a first heating of a latomer mixture comprising at least one free radical polymerizable monomer to low conversion and then adding at least one alkylene anhydride; a second heating of the latomer mixture to low conversion; a third heating of the latomer mixture to form polymeric particles; and combining at least one amine with the polymeric particles.

Embodiments include a chemical toner composition having a first resin including a styrene vinyl copolymer and having a Tg of from about 46 to about 56&#xb0; C., b) a second resin including a styrene vinyl copolymer having a Tg of from about 55 to about 65&#xb0; C., c) a distilled wax having a heat of crystallization and a heat of enthalpy, both from about 1.0 to about 4.0 J/g for every weight percent of the wax used in the chemical toner composition, and wherein the wax has a peak melting point of from about 70 to about 99&#xb0; C., and d) a colorant, wherein the chemical toner has a gloss of from about 30 to about 80 GGU.

Toner having crystalline wax

A process including mixing a sulfonated polyester resin, a colorant, and a coagulant; heating the resulting sulfonated polyester mixture; adding a polymetal halide and an anionic latex to form coated toner particles; and heating the coated toner particles is disclosed.

Toner processes

A process for preparing toner particles and compositions adapted for use in preparing toners that comprise a blend of a first polyester resin with a second sharp melting polyester resin. The process includes forming an emulsion resin comprising a branched polyester resin, a crystalline polyester resin, a colorant, and optionally a wax. The resin mixture is aggregated using an aggregating agent, such as a zinc acetate solution, to form an aggregate mixture. The aggregate mixture is then coalesced at a temperature of from about 5 to about 20&#xb0; C. above the Tof the emulsion resin to produce the resultant toner particles.

Low melt toners and processes thereof

Embodiments include a toner with a fractionated and/or distilled wax having from about 30 to about 64 carbon units, a degree of crystallinity as calculated by heat of melting and as measured by DSC of from about 55 to about 100, a Mw is from about 500 to about 800, and a polydispersity of from about 1 to about 1.05.

Embodiments include a fractionated and/or distilled wax having from about 30 to about 64 carbon units, a degree of crystallinity as calculated by heat of melting and as measured by DSC of from about 55 to about 100, a Mw is from about 500 to about 800, and a polydispersity of from about 1 to about 1.05.

Crystalline wax

Embodiments include a distilled wax having a crystallinity of from about 55 to about 100 percent, wherein the degree of crystallinity is calculated using the following formulas: [Heat of enthalpy (Hm) J/g/294 J/g]&#xd7;100=degree of crystallinity (Xc); [Heat of recrystallization (Hrc) J/g/294 J/g]&#xd7;100=degree of crystallinity (Xc); and Sc/(Sc+Sa)]&#xd7;100%, wherein Sc is a diffraction peak area of a crystalline component of the wax and the Sa is a diffraction peak area of an amorphous component of the wax; and wherein the Mp, Mn and Mw of the wax are all within the range of from about 500 to about 800, and wherein the wax has a polydispersity of from about 1 to about 1.05.

Toner particles and a dry-powder electrophoretic display employing such particles are disclosed herein. The toner particles adapted for a dry-powder electrophoretic display comprise emulsion/aggregation particles having a negative charge. At least a portion of the toner particles include a surface coating, comprising a methacrylate polymer, disposed on the surface of the toner particles to impart a positive charge to a set of toner particles. The emulsion/aggregation toner particles have a particle size generally less than about 10 micrometers that allows for improved image quality as compared to conventional toners utilized in dry-powder electrophoretic displays.

Toner compositions for dry-powder electrophoretic displays

Toner compositions include a non cross linked resin; a cross linked resin or gel; a wax; and a colorant. Processes for preparing a toner include mixing a non-cross linked resin and a cross-linked resin or gel in the presence of a wax, a colorant, and a coagulant to provide toner size aggregates; adding additional non-cross linked latex to the formed aggregates thereby providing a shell over the formed aggregates; heating the shell covered aggregates to form toner; and, optionally, isolating the toner.

Toner compositions

A toner composition includes a styrene-based polymer resin, a crystalline polyester wax, a second wax different from the crystalline polyester wax, a colorant, and a coagulant.

Styrene-based toner compositions with multiple waxes

The present disclosure relates to a process including a first heating of a latomer mixture including at least one free radical polymerizable monomer, and at least one alkylene anhydride; a second heating of the latomer mixture to form polymeric particles; and combining the polymeric particles with at least one amine.

A toner composition includes toner particles including a polymeric resin, a colorant, a wax, and an optional coagulant, and a coagulant applied as a surface additive to a surface of the toner particles to alter a triboelectric charge of the toner particles.

Toner compositions and processes

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Oakville, Canada

Raj D Patel