1
Thomas R Hoffend, Angelo J Barbetta: Toner compositions with ammonium sulfate charge enhancing additives. Xerox Corporation, E O Palazzo, December 24, 1985: US04560635 (290 worldwide citation)

Disclosed in the present application are toner compositions comprised of resin particles, pigment particles, and a sulfate charge enhancing additive selected from the group consisting of distearyl dimethyl ammonium methyl sulfate, and behenyl trimethyl ammonium methyl sulfate.


2
Hadi K Mahabadi, Enno E Agur, Gerald R Allison, Michael S Hawkins, Stephan Drappel, Maria N V McDougall, Bernard Grushkin, Thomas R Hoffend, Angelo J Barbetta: Cross-linked toner resins. Xerox Corporation, Oliff & Berridge, July 13, 1993: US05227460 (129 worldwide citation)

A low melt toner resin with low minimum fix temperature and wide fusing latitude contains a linear portion and a cross-linked portion containing high density cross-linked microgel particles, but substantially no low density cross-linked polymer. The resin may be formed by reactive melt mixing.


3
Hadi K Mahabadi, Denise Y Wright, T Hwee Ng, Angelo J Barbetta, John A Creatura: Conductive composite particles and processes for the preparation thereof. Xerox Corporation, E O Palazzo, August 17, 1993: US05236629 (125 worldwide citation)

A process for the preparation of conductive submicron polymeric particles which comprises mixing at least one monomer with a polymerization initiator, a crosslinking component and a chain transfer component; effecting bulk polymerization until from about 10 to about 50 weight percent of the monomer ...


4
Hadi K Mahabadi, Denise Y Wright, T Hwee Ng, Angelo J Barbetta, John A Creatura: Dry carrier coating and processes. Xerox Corporation, E O Palazzo, July 19, 1994: US05330874 (103 worldwide citation)

A process for the preparation of carrier particles which comprises the dry coating of a carrier or carrier cores with conductive submicron polymeric particles containing from about 1 to about 50 weight percent of conductive fillers, and wherein said conductive polymer particles are prepared by mixin ...


5
Hadi K Mahabadi, Enno E Agur, Gerald R Allison, Michael S Hawkins, Stephan Drappel, Maria N V McDougall, Bernard Grushkin, Thomas R Hoffend, Angelo J Barbetta: Reactive melt mixing process for preparing cross-linked toner resin. Xerox Corporation, Oliff & Berridge, December 27, 1994: US05376494 (52 worldwide citation)

Low fix temperature toner resins are fabricated by a reactive melt mixing process wherein polymer resins are cross-linked at high temperature and high shear. The resins are particularly suitable for high speed fusing, show excellent offset resistance and wide fusing latitude and superior vinyl offse ...


6
Angelo J Barbetta, Robert D Bayley, Carol A Fox, Thomas R Hoffend, Scott M Silence, K Derek Henderson, John G VanDusen: Coated carrier. Xerox Corporation, E O Palazzo, March 28, 2000: US06042981 (23 worldwide citation)

A composition comprised of a core and thereover a polymer of (1) polystyrene/alkyl methacrylate/dialkylaminoethyl methacrylate, (2) polystyrene/alkyl methacrylate/alkyl hydrogen aminoethyl methacrylate, (3) polystyrene/alkyl acrylate/dialkylaminoethyl methacrylate, or (4) polystyrene/alkyl acrylate/ ...


7
Hadi K Mahabadi, Enno E Agur, Gerald R Allison, Michael S Hawkins, Stephan Drappel, Maria N V McDougall, Bernard Grushkin, Thomas R Hoffend, Angelo J Barbetta: Toners having cross-linked toner resins. Xerox Corporation, Oliff & Berridge, October 4, 1994: US05352556 (13 worldwide citation)

A low melt toner resin with low minimum fix temperature and wide fusing latitude contains a linear portion and a cross-linked portion containing high density cross-linked microgel particles, but substantially no low density cross-linked polymer. The resin may be formed by reactive melt mixing.


8
Angelo J Barbetta, Doretta Agostine, Thomas R Hoffend, Richard D Manca, Emery G Tokoli: Toner compositions with inner salt charge enhancing additives. Xerox Corporation, E O Palazzo, June 21, 1988: US04752550 (11 worldwide citation)

Toner compositions comprised of resin particles, pigment particles, and as a charge enhancing additive inner salts wherein the negative charge center is covalently attached to the positive charge center. Also disclosed are developer compositions comprised of the aforementioned toner components and c ...


9
John R Laing, Hui Chang, Richard D Manca, Angelo J Barbetta: Developer compositions with suspension polymerized styrene butadiene resins. Xerox Corporation, Judith L Byorick, Eugene O Palazzo, October 16, 1990: US04963455 (11 worldwide citation)

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 ...


10