Xerox Corporation

Other

Sue E Blaszak

Edul N Dalal

Kristen M Natale-Hoffman

Roger N Ciccarelli

Jacques C Bertrand

Paul C Julien

Denise R Bayley

Thomas R Pickering

Elliott A Eklund

Susan J Kremer

Mary L Mc Stravick

Grazyna E Kmiecik-Lawrynowicz

John S Berkes

William H Hollenbaugh, Jr

Ronald J Koch

Yelena Shapiro

Robert L Gruber

William H Hollenbaugh

Mary L Mcstravick

A toner composition includes toner particles having at least one spacer of substantially monodisperse latex particles that are dried and attached to the toner particles, in which the attached latex particles have an average particle size of from about 60 nm to about 500 nm. The presence of the spacer enables improved toner transfer efficiency maintainability while maintaining excellent tribo level, tribo stability with aging, charge through performance and cohesion behavior with aging.

Toner compositions including large external latex particles

A black toner of toner particles including at least one binder, at least one black colorant, and a package of external additives is described, wherein the at least one binder includes a styrene acrylate binder and wherein the external additives include each of a first silica having an average particle size of from about 35 to about 45 nm, a second silica having an average particle size of from about 135 to about 160 nm, and a titania having an average particle size of from about 35 to about 45 nm. Also described is a developer that includes the black toner and carrier particles comprising a core of ferrite coated with a coating comprising a polymethyl methacrylate polymer and fluoro-copolymer, carbon black and melamine beads. The black toner and developer are preferably used in a semiconductive magnetic brush development system.

Emulsion aggregation black toner and developer with superior image quality

Color toner compositions and processes thereof

A process including: blending toners from a set of primary toners to form a set of secondary toners; and developing the secondary color toners to form spot color images, wherein the color gamut of all said images embody substantially the entire PANTONE.RTM. spot color space.

Toner compositions and processes thereof

Toners comprised of a cyan toner, a magenta toner, a yellow toner, an orange toner, or a red toner, and a black toner, each of said toners being comprised of resin and pigment; and wherein the pigment for the orange toner is Orange 13, Cl 21110, Orange 34, Cl 21115, Orange 5, Cl 12075, Orange 16, Cl 21160, Orange 36, Cl 11780, Orange 46, Cl 15602, Orange 67, or Orange 69, and wherein the pigment for the red toner is Red 53:1, Cl 15585, Red 48:1, Cl 15865:1, Red 122, Cl 12370, or Red 254; and wherein said pigment for each toner is prepared by flushing said wet pigment, wherein a cyan, magenta, orange, or red and yellow pigment water wet cake is mixed with toner resin, and the water is substantially removed to generate pigmented resin, or wherein said pigment for each toner is prepared by dispersing said pigment with a polymeric alcohol.

Colored toner and developer compositions

Toners comprised of a cyan toner, a magenta toner, a yellow toner, a violet toner, and a black toner, each of said toners being comprised of resin and pigment; and wherein the pigment for the violet toner is Violet 19 with a C.I. number of 46500, Violet 23 with a C.I. number of 51319, Violet 3 with a C.I. number of 42535, Blue 1, Blue 60, or Blue 61, and wherein said pigment for each toner, excluding black, is prepared by flushing a wet pigment, wherein said cyan, magenta, yellow, and violet pigment water wet cake is mixed with a toner resin, and the water is removed to generate pigmented resin.

Colored toner and developer compositions and process for enlarged color

Toners comprised of a cyan toner, a magenta toner, a yellow toner, an orange toner, a green toner, and a black toner, each of said toners being comprised of resin and pigment; and wherein the pigment for the orange toner is Orange 5, C.I. number 12075, Orange 13, C.I. number 21110, Orange 16, C.I. number 21160, or Orange 34, C.I. number 21115, and the pigment for the green toner is Green 7, C.I. number 74260, or Green 36, C.I. number 74265, and wherein said pigment for each toner, excluding black, is prepared by flushing each of said pigments, wherein a cyan, magenta, yellow, orange, and green pigment water wet cake is mixed with toner resin, and the water is removed, or substantially removed to generate pigmented resins.

A combination of five colored toners containing resin and certain pigments of magenta, yellow, orange, red, and black, and processes for the preparation of these toners by, for example, mixing a cyan, magenta, orange, or red and yellow pigment water wet cake with toner resin, followed by substantially removing the water to generate pigmented resin.

Process for the preparation of colored toner and developer compositions

A combination of toners including a cyan toner, a magenta toner, a yellow toner, an orange toner, a green toner and a black toner, each of the toners containing resin and pigment. The pigment for the orange toner can be Orange 5, C.I. number 12075, and the pigment for the green toner can be Green 7, C.I. number 74260. The pigment for each of the toners excluding black can be prepared by flushing processes.

A combination of toners containing a cyan toner, a magenta toner, a yellow toner, a violet toner, and a black toner, each toner containing resin and pigment. The pigment for each of the colored toners, which excludes black, can be prepared by flushing a wet pigment cake with a toner resin and removing water to generate a pigmented resin.

Toners comprised of a cyan toner, a magenta toner, a yellow toner, a green toner, and a black toner, each of said toners being comprised of resin and pigment; and wherein the pigment for the green toner is Green 7, CI Number 74260, or Green 36, CI Number 74265, and wherein said pigment, excluding black, is dispersed in said resin by flushing, wherein a cyan, magenta, green, and yellow pigment water wet cake is mixed with toner resin, and the water is sbustantially removed to generate pigmented resin.

Color toner and developer compositions

Toner compositions are formed by selecting a portion of at least one metal-containing pigment or dye and a portion of at least one metal-free pigment or dye, at least one pigment or dye containing a regulated metal and/or material and at least one pigment or dye containing a non-regulated metal and/or material, at least two pigments or dye each containing a different regulated metal and/or material, or pigments or dyes which contain different regulated metals and/or materials in different concentrations to provide required toner properties while maintaining metal, regulated metal and/or regulated material content of a toner composition below a prescribed level, and dispersing the pigments together in the composition.

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Penfield, NY, United States of America

Sue E Blaszak