Xerox Corporation

Xeerox Corporation

Robert J Gruber

John F Knapp

Steven B Bolte

Paul C Julien

Ronald J Koch

Raymond A Yourd, Iii

Bing R Hsieh

Richard F Koehler, Jr

Edul N Dalal

John S Berkes

Richard B Lewis

Lawrence Floyd, Jr

John L Haack

Santokh Singh Badesha

Shadi L Malhotra

Rabin Moser

Bernard Grushkin

Robert A Nelson

Edward W Connors

Doretta Agostine

Nicholas J Germano

Timothy J Fuller

Karen Ann Moffat

Kock-Yee Law

Dan A Hays

Arnold W Henry

Thomas R Hoffend

Walter Mychajlowskij

Eugene Frederick Young

Anthony J Paine

Michael G Swales

John Wei-Ping Lin

Dale R Ims

Edward J Gutman

Richard P Germain

Deepak R Maniar

Carol A Fox

Louis V Isganitis

Nancy Beth Goodman

John G VanDusen

Donald J Goodman

Raphael F Bov, Jr

Thomas J Pacansky

Paul W Eakin

Susan J Kremer

Michael J Oszczakiewicz

Leon A Howland

Steven T Dunn

Angello J Barbetta

Debesh Majumdar

Thomas D Cometa

A heat and pressure fuser and a Release Agent Management (RAM) system therefor. A dual function RAM system is provided. The dual function RAM system supplies functional release agent material having a relatively high concentration of functional chains (in the order of 0.05 to 0.4 mol %) to an elastomeric fuser member as well as release agent material having low funtionality or no functionality. The elastomeric fuser member may contain metal oxide particles. The low functionality release agent is relatively non-reactive. Depending on whether the elastomeric member contains the metal oxide particles, the functional chains of the high concentration release agent material which are periodically supplied to the fuser roll surface either attach to the metal particles exposed at the surface of the fuser roll by chemical bonds or to the elastomeric material itself. The non-reactive chains adhere to the functional chains by much weaker physical (such as van der Waals) chains. The periodic application of the high concentration release agent material includes application for a relatively short duration at machine startup as well as periodically thereafter as needed. Application of the release agent is effected using an elongated web impregnated with alternate bands or areas of silicone oil containing high and low functional chains.

Dual levels of functional and non-reactive release agents for fusers

A fuser member for use in an electrostatographic printing machine has at least one layer of an elastomer composition comprising a silicone elastomer and a mica-type layered silicate, the silicone elastomer and mica-type layered silicate forming a delaminated nanocomposite with silicone elastomer inserted among the delaminated layers of the mica-type layered silicate.

Thermally stable fuser member

A heat and pressure fuser and Release Agent Management (RAM) systems therefor. Dual RAM systems are provided. A first RAM system supplies functional release agent material having a relatively high concentration of functional chains (.about.O.05 to 0.3 mol %) to an elastomeric fuser member prior to a second RAM system which supplies release agent material having low functionally or no functionality. The elastomeric fuser member may contain metal oxide particles. The low functionality release agent is relatively non-reactive. Depending on whether the elastomeric member contains the metal oxide particles, the functional chains of the high concentration release agent material which are periodically supplied to the fuser roll surface either attach to the metal particles exposed at the surface of the fuser roll by chemical bonds or to the elastomeric material itself. The non-reactive chains adhere to the functional chains by much weaker physical (such as van der Waals) chains. The periodic application of the high concentration release agent material includes application for a relatively short duration at machine startup as well as periodically thereafter as needed.

Dual oil release agent management system

An apparatus for developing a latent image recorded on a surface, including a housing defining a chamber storing a supply of toner. A toner donor member is spaced from the image bearing surface and adapted to transport toner to a region opposed from the surface. A charging device is disposed in the chamber for ion charging the toner. An air injection system fluidizes the toner in the chamber. The injection system and a transport member cooperate with one another to define a region wherein a substantially constant quantity of toner having a substantially constant ion charge is deposited on the transport member. The toner is electrostatically transferred from the transport member to the donor member which contains interdigitated electrodes positioned near the surface of a dielectric core roll. An AC voltage is applied between the interdigitated electrodes to detach toner from the donor member so as to form a toner cloud for developing the latent image in an image on image process.

Development system

A fuser member is disclosed with a supporting substrate having an outer layer of a composition comprising integral interpenetrating networks of haloelastomer and silica.

Fusing components containing ceramer compositions

An electrostatographic imaging process includes forming an electrostatic latent image on an image forming device, developing the electrostatic latent image on the image forming device with at least one developer containing carrier particles and a blend of two or more compatible toner compositions, and transferring the toner image to a receiving substrate and fixing it thereto. Among the compatible toner compositions that may be selected are toner compositions having blend compatibility components coated on an external surface of the toner particles and particulate toner compositions containing therein blend compatibility components or passivated pigments. Electrostatographic imaging devices, including a tri-level imaging device and a hybrid scavengeless development imaging device, are also provided for carrying out the described process. The processes and apparatus of the present invention are especially useful in imaging processes for producing single color or highlight color images using customer selectable colors, or for adding highlight color to a process color image produced by the same apparatus.

Process and apparatus for achieving customer selectable colors in an

A MICR tape allows for the complete release of magnetic material from the tape substrate. This is accomplished by creating a tape with a layered structure including a magnetic layer coated on a polymer layer with a release layer therebetween.

Materials and structure for tape with enhanced release

A process for the preparation of toner compositions with excellent humidity characteristics and comprised of resin particles, and pigment particles which comprises adding thereto metal oxide particles surface treated with a metal salt complex charge enhancing additive.

Toner and processes thereof

An electrophotographic process for enabling substantially tamperproof images, including the generation of a latent image; developing the image with a toner composition comprised of resin particles, magnetite particles, and a colored organic soluble dye, a colored organic insoluble dye, or the salts thereof; and an optional additive component comprised of an aliphatic hydrocarbon or a polymeric alcohol of the formula

Magnetic image character recognition processes

A process for the preparation of encapsulated toner compositions which comprises a core dispersion obtained by adding pigment to a monomer, and wherein the pigment is sterically stabilized with a block copolymer; dispersing the resulting core dispersion into an aqueous solution containing an emulsifier; adding thereto an aqueous solution containing a shell monomer; encapsulating the core dispersion by interfacial polymerization of said shell monomer; and heating to initiate a free radical polymerization of the core monomer.

Processes for the preparation of encapsulated toner compositions

An encapsulated toner composition comprised of a core comprised of pigments or dyes, and a polymer; and wherein the core is encapsulated in a polyester shell with functional groups thereon, and derived from diacid halide polyesters.

Encapsulated toner compositions and processes thereof

An electrophotographic process which comprises the generation of a latent image; developing the image with a toner composition comprised of resin particles, magnetite particles, and a polymeric fluorocarbon; and subsequently providing the developed image with magnetic ink characters thereon to a reader/sorter device whereby toner offsetting and image smearing is avoided or minimized in said device.

Toner compositions and processes thereof

Disclosed is an improved toner composition comprised of resin particles, pigment particles, and present on the surface thereof additives comprised of a charge enhancing component sorbed on a flow aid composition.

Toner compositions with modified charge enhancing additives

Disclosed is a process for forming two-color images which comprises charging an imaging member, creating on the member a latent image comprising areas of high, medium, and low potential, developing the low areas of potential with a developer comprising a specific colored toner and a specific carrier as described herein, subsequently developing the high areas of potential with a developer comprising a specific black toner and a specific carrier as described herein, transferring the developed two-color image to a substrate, and permanently affixing the image to the substrate.

Process for forming two-color images

A negative charged toner composition comprised of resin particles, pigment particles, and as a charge enhancing additive dithiolene complexes of the formulas of FIGS. 1,2,3 or 4, wherein X is selenium or sulfur, M is a metal, R is alkyl, Y is a cation, Z represents zinc, and n represents the valence of the cation and anion components.

Toner compositions with negative charge enhancing additives

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Pittsford, NY, United States of America

Robert J Gruber