Xerox Corporation

Dennis J O'Keefe

Eugene Frederick Young

Dongming Li

Hui Chang

Joseph L Leonardo

J Stephen Kittelberger

John J Ianni

Paul Lynn Jacobs

Yelena Lipovetskaya

Nilmarie Santos-Roman

Louis Joseph Kurtic, Jr

Daniel Andrew Harrington

Kiran B Sheth

Robert Edward Lutz

Cross-linked toner resin having linear portions and cross-linked portions of high density microgel particles, where the toner resin is an unsaturated polyester resin, is prepared using a liquid chemical initiator such as 1,1-bis(t-butyl peroxy)-3,3,5-trimethylcyclohexane so that the cross-linked resin achieved contains less than 0.20 percent by weight of acids. In particular, the cross-linked toner resin is free of benzoic acid. The method of making the cross-linked toner resin includes (a) spraying the liquid chemical initiator onto the unsaturated polyester resin prior to, during or subsequent to melting of the unsaturated polyester resin to form a polymer melt; and (b) subsequently cross-linking the polymer melt under high shear to form the cross-linked toner resin.

Cross-linked polyester toners and process of making such toners

A toner comprised of resin, magnetite treated, or coated with a phosphate titanium component, optional wax, charge additive, and surface additives comprised of silica and metal oxides.

Magnetic toner compositions with surface additives

Magnetic compositions with surface additives

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Ontario, NY, United States of America

Dennis J O'Keefe