Xerox Corporation

John R Laing

Hui Chang

Edward J Gutman

Santokh Singh Badesha

Arnold W Henry

George J Heeks

Richard L Schank

Merlin E Scharfe

J Stephen Kittelberger

Mark James Hirsch

John G VanDusen

Suresh K Ahuja

John L Haack

Deepak R Maniar

Angelo J Barbetta

Don B Jugle

Joseph R Weber

Victor Berko-Boateng

Meurig W Williams

Richard D Manca

George W Vianco

Michael S Smith

Mit G Turakhia

Maria E McCall

C D Zimmer

A waste toner reclamation process includes collecting waste toner, screening the collected waste toner, meltmixing the screened waste toner with a second toner, and extruding, grinding and classifying the mixed toner product, wherein the collected waste toner comprises a mixture of different colored toner particles.

Process for producing toner

A process involving: collecting waste toner; screening the collected waste toner; melt mixing the screened waste toner with a second toner, and grinding and classifying the melt mixed toner product.

An apparatus and process for reducing accumulation of toner from the surface of an electrode member in a development unit of an electrostatographic printing apparatus by providing an organic coating on at least a portion of the electrode member.

Organic coated development electrodes and methods thereof

An apparatus for reducing accumulation of toner from the surface of an electrode member in a development unit of an electrostatographic printing apparatus which includes providing a low surface energy coating on at least a portion of the electrode member.

Coated development electrodes and methods thereof

A marking particle color blending device for use in an electrophotographic printing machine of the type having an electrostatic latent image recorded on a photoconductive member is provided. The device includes a first container for storing a first supply of marking particles defining a first color and a second container for storing a second supply of marking particles defining a second color. The device further includes a mixing chamber operably associated with the first container and the second container for receiving a least a portion of at least one of the first supply of marking particles and the second supply of marking particles. The device also includes a first metering device operably associated with the first container and the mixing chamber for accurately controlling the quantity of the first supply of marking particles entering the mixing chamber. The device further includes a second metering device operably associated with the second container and the mixing chamber for accurately controlling the quantity of the second supply of marking particles entering the mixing chamber.

Copy machine with physical mixing of distinct toner to form a custom

A process for cleaning imaging members which comprises applying thereto subsequent to the formation and development of images a composition comprised of resin particles, carbon black particles, magnetite, charge additive, or a mixture of charge additives, and a wax component comprised of polymeric alcohols of the formula

Cleaning processes

A process for the preparation of developer compositions comprising providing a first developer comprised of carrier and first toner comprised of resin, pigment, polyolefin, compatibilizer, charge control agent, and surface additive, and adding thereto a second replenisher comprised of carrier, and second toner comprised of resin, pigment, polyolefin, compatibilizer, charge control agent, and surface additive, and wherein the surface additive of the second toner is present in a lesser amount than the surface additive of the first toner.

Processes for controlling developer aging

A toner composition comprised of resin particles, pigment particles, and bis-(distearyldimethylammonium)sulfate.

Toner and developer compositions with charge enhancing additives

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.

Developer compositions with suspension polymerized styrene butadiene

A toner composition comprised of resin, pigment or dye particles, and a quaternary ammonium bisulfate charge enhancing additive of the formula R'.sub.2 R'.sub.2 N.sup.+ X- wherein R' and R' are independently selected from the group consisting of alkyl, aryl, and alkylaryl; and X- is a bisulfate anion.

A toner composition comprised of resin, pigment, and a mixture of charge enhancing additives comprised of a first additive of distearyl dimethyl ammonium methyl sulfate, and a second additive comprised of a tetraalkyl ammonium bisulfate.

Toner compositions with charge enhancing additives

A process for the preparation of developer compositions which comprises (1) providing carrier particles consisting of a core with a coating thereover; (2) introducing the carrier particles into a blending apparatus; (3) adding to the blending apparatus fine toner particles with a diameter of from about 2 microns to about 10 microns, said particles being comprised of toner resin particles, pigment particles, and a charge enhancing additive; (4) affecting blending for a period of time sufficient to enable the classified toner particles to alter the tribogenerating ability of the surface of the carrier particles and become embedded therein; (5) subsequently adding to the resulting blended mixture toner particles of a diameter of from about 2 to about 18 microns, and comprised of toner resin particles, pigment particles, and a charge enhancing additive; and (6) blending for a period of form about 1 minute to about 5 minutes.

Process for developer compositions

Toner removal device for removing residual toner and debris from a charge retentive surface after transfer of toner images from the surface. This device is characterized by the use of a pair of detoning rolls, one for removing toner from a biased cleaner brush and the other for removing debris such as paper fibers and Kaolin from the brush. The rolls are electrically biased so that one of them attracts toner from the brush while the other one attracts debris. Thus, the toner can be reused without degradation of copy quality while the debris can be discarded.

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Rochester, NY, United States of America

John R Laing