Xerox Corporation

Joseph R Weber

Edward J Gutman

Joan R Ewing

Kathryn A Wallace

Santokh Singh Badesha

Damodar M Pai

Bing R Hsieh

Arnold W Henry

Robert D Bayley

George J Heeks

Roger N Ciccarelli

Thomas R Hoffend

Robert M White

Kurt B Gundlach

Robert P Altavela

Che C Chow

Timothy L Lincoln

J Stephen Kittelberger

Peter F Erhardt

Louis V Isganitis

John R Laing

Gary R Fague

John L Haack

Lawrence H Herko

Henry R Kang

Jerry H Taylor

Warren E Solodar

Norman S Edgett

John L Ferrante

Leela Ganguly

Francois Soos

Kathyrn A Wallace

Raymond R Wells

Ronald E Bilak

An article including: a corotron assembly and a protective coating thereover, where the coating comprises at least one sequestering additive, such as ferrous fumarate or ferrous oxalate, which additive sequesters acidic oxygenates of nitrogen, such as nitrate or nitrite compounds.

Protective corona coating compositions and processes thereof

A coated donor roll comprises a core with a coating, the coating comprising a charge transporting polymer, an organic acid metal salt compound, and iodine.

Developing apparatus and coated developer roller

Fluoroelastomer surfaces for fuser members and a method for fusing thermoplastic resin toner images to a substrate using fuser surfaces, including a method for forming these surfaces which includes dissolving a fluoroelastomer; adding an amino silane to form a resulting homogeneous fluoroelastomer solution; and subsequently providing a layer of the homogeneous fluoroelastomer solution to the supporting substrate.

Fluoroelastomer members

A method and apparatus for determining the level of roughness in a paper or other substrate to be processed in a machine, and for correspondingly adjusting the machine parameters that are affected by the different levels of substrate roughness, before the substrate is processed through the machine.

Method and apparatus for detecting substrate roughness and controlling

Several methods are provided for cleaning felt or foam materials that are used to store and deliver ink, particularly ink supplied to ink jet printheads in an ink jet printing system. The felt materials are contaminated during manufacture, by various antistats, primarily phosphates. These antistats later react with the ink to create kogation and nozzle blocking problems as well as reduction of surface tension of the ink. The methods of the invention are directed to reducing the antistats left in the storage material after manufacture. In one method, the material is washed in heated softened water. Prior to loading the material in the wash, IPA is added to the heated wash. The material is washed through two Wash/Rinse cycles and then dried. The removal of the calcium in the wash water via softening prevents the precipitation of calcium-phosphate salts, which, when the material later contacts the ink, reduces nozzle clogging caused by these precipitates. The addition of the IPA increases removal of the phosphate antistats and greatly reduces the kogation and clogging problems. In a second embodiment, the storage material is washed in tap water to which has been added the IPA as well as a chelating agent. The chelating agent prevents the calcium from forming a precipitate with the remaining antistats in the material and provides the same function against any calcium or other divalent metal ions that may be introduced during ink flow from material to printhead nozzle.

Method of cleaning an ink storage material

A method of fabricating thermal ink jet printheads comprises aligning and bonding a pair of silicon wafers together, which have, on opposing confronting surface thereof, a plurality of sets of linear arrays of heating elements and associated driver circuitry on one wafer surface and a plurality of sets of parallel grooves and a communicating reservoir for each set of grooves. The grooves and reservoirs are filled with a filler material which is solid or gels at room temperature and liquid at higher temperatures. The bonded pair of wafers are severed into a plurality of individual printhead sby dicing processes conducted at room temperature. One of the dicing processes cuts the grooves in a direction perpendicular thereto in order to form concurrently the nozzle face and nozzles. The solid filler material supports fragile edges of the wafers and prevents entry of dicing debris and other contaminants. The printheads are subjected to heat, spinning, and high pressure water spray to remove the filler material.

Method of reducing chipping and contamination of reservoirs and channels

An apparatus and method for electrowinning metal from particulate waste metal material is provided whereby waste metal material is mixed with an electrolyte to form a suspension. The suspension is separated into portions. A first portion enters the anodic compartment and a second portion is filtered and enters the cathodic compartment where metal is electrowon onto a rotating cathode.

Apparatus for electrowinning of metal from a waste metal material

A toner composition comprised of resin, pigment, and a nonionic fluorosurfactant charge enhancing additive.

Toner compositions with charge enhancing additives

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

Toner and developer compositions with charge enhancing additives

An improved ink jet composition comprised of a major amount of water, a hydroxypropylated polyethyleneimine with a weight average molecular weight of from about 1,000 to about 10,000, and a dye component; and wherein the ink has a viscosity of from about 1 to about 5 centipoise.

Waterfast ink jet compositions and process

Growing community of inventors

Rochester, NY, United States of America

Joseph R Weber