Xerox Corporation

Bausch-lomb Incorporated

Raymond A Yourd, Iii

Robert J Gruber

Paul C Julien

Gary D Friends

Richard C Chromecek

Shadi L Malhotra

John F Knapp

Steven B Bolte

Ronald J Koch

Lawrence Y Wissman

Thomas R Hoffend

John S Berkes

Carol A Fox

John G VanDusen

Robert A Nelson

Doretta Agostine

Debesh Majumdar

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 an improved stable colored toner composition comprised of resin particles, colloidal silica additive particles, and colored pigment particles; and wherein each of the toners are encapsulated in a continuous shell from about 1 to about 30 percent by weight of a waxy substance with a molecular weight of from about 500 to about 20,000.

Process for preparing encapsulated color toner compositions

A toner composition comprised of particles of a polyester with siloxane block segments therein, which particles have incorporated therein release additives.

Toner compositions with release additives therein

Disclosed is an encapsulated toner composition comprised of (1) domains containing a polymer component having dispersed therein a release composition; and thereover (2) a host resin component comprised of toner resin particles and pigment particles.

Toner compositions with release agents therein

Disclosed is a process for affecting a reduction in fusing energy and permitting minimal image de-enhancement which comprises (1) providing a toner composition with toner resin particles, and pigment particles; (2) affecting spheroidization of the aforementioned toner composition; (3) incorporating the spheroidized toner composition into a xerographic imaging apparatus with a flash fusing device incorporated therein; (4) generating an electrostatic latent image in the imaging apparatus; (5) developing the image formed with the spherical toner composition; (6) transferring the image to a supporting substrate; and (7) permanently affixing the image thereto with energy emitted from a flash fusing device.

Flash fusing process with prespheroidized toner

Inclusion of carbonyl modified amino acid monomers in polymeric compositions for biomedical applications, including contact lenses, increases the water content and oxygen permeability of the polymer without significant changes in other desirable properties of the polymer.

Alpha, beta-unsaturated carbonyl modified amino acid monomer and

Disclosed is an improved positively charged dry electrostatic colored toner composition comprised of first resin particles; crosslinked second resin particles; colored pigment particles excluding black; and selected from the group consisting of cyan, magenta, yellow, blue, red, and brown; a low molecular weight wax; and a charge enhancing additive selected from the group consisting of alkyl pyridinium halides, organic sulfonate compositions and organic sulfate compositions of the following formulas: ##STR1## wherein R is a hydrocarbon group containing from about 8 to about 22 carbon atoms, and A is an anion; ##STR2## wherein R.sub.1 is an alkyl group of from about 12 carbon atoms to about 22 carbon atoms, R.sub.2 and R.sub.3 are independently selected from alkyl groups containing from about 1 carbon atom to about 5 carbon atoms, R.sub.4 is an alkylene group of from about 1 carbon atom to about 5 carbon atoms, R.sub.5 is a tolyl group or an alkyl group of from about 1 carbon atom to about 3 carbon atoms, and n is the number 3 or 4; and distearyl dimethyl ammonium methyl sulfate, behenyl trimethyl ammonium methyl sulfate, and distearyl methyl ethyl ammonium ethyl sulfate.

Positively charged colored toner compositions

Disclosed are improved positively charged toner composition comprised of resin particles, pigment particles, and as a charge enhancing additive a phosphonium compound of the formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, and R.sub.4, are selected from the group consisting of alkyl, aryl, substituted alkyl, and substituted aryl, and A is an anion.

Positively charged toner compositions containing phosphonium charge

Disclosed are positively charged toner compositions comprised of resin particles, pigment particles, and imide charge enhancing additives of the formula: ##STR1## wherein R.sub.1, R.sub.2, and R.sub.3, are alkyl groups containing from 1 carbon atom to about 25 carbon atoms, R.sub.4 is selected from the group consisting of hydrogen, nitro, halogen, amino, and alkyl and A is an anion.

Electrophotographic toner compositions containing novel imide charge

This invention relates to improved positively charged toner compositions for use in developing electrostatic images contained in electrostatographic imaging devices wherein fusing is accomplished with a fuser roll fabricated from lead oxide and a vinylidene fluoride hexafluoropropylene copolymer, which composition is comprised of resin particles, pigment particles, and as the charge enhancing additive present in an amount of from about 0.1 percent by weight to about 10 percent by weight, a pyridinium tetrafluoroborate of the following formula: ##STR1## wherein R.sub.1 is an alkyl group containing from about 1 carbon atom to about 22 carbon atoms, and R.sub.2 is an alkyl group containing from about 1 carbon atom to about 8 carbon atoms, or a halogen, and n is zero or 1.

Method of fusing toner compositions containing pyridinium

Developer composition with a negative charge enhancing additive is disclosed.

Developer compositions containing diaryl sulfonimides

Toner compositions containing pyridinium tetrafluoroborates

Low N-vinyl lactam content copolymers are cross-linked with resonance free di(alkene tertiary amine) cyclic compounds to obtain biomedical devices, including soft contact lenses, which have good oxygen permeability and mechanical properties.

Low N-vinyl lactam content based biomedical devices

N-vinyl lactam monomers and comonomers are cross-linked with resonance free di(alkene tertiary amine) cyclic compounds to obtain biomedical devices, including contact lenses, which have high oxygen permeability and good mechanical properties.

Growing community of inventors

Rochester, NY, United States of America

Raymond A Yourd, Iii