The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 19, 2002
Filed:
Oct. 26, 2000
John James Ianni, Medina, NY (US);
J. Stephen Kittelberger, Rochester, NY (US);
Daniel Andrew Harrington, Walworth, NY (US);
Eugene Frederick Young, Rochester, NY (US);
Hui Chang, Pittsford, NY (US);
Nilmarie Santos-Roman, Penfield, NY (US);
Dennis J. O'Keefe, Ontario, NY (US);
Joseph Louis Leonardo, Penfield, NY (US);
Paul Lynn Jacobs, Webster, NY (US);
Kiran B. Sheth, Penfield, NY (US);
Dongming Li, Fairport, NY (US);
Louis Joseph Kurtic, Jr., Fairport, NY (US);
Robert Edward Lutz, Webster, NY (US);
Yelena Lipovetskaya, Rochester, NY (US);
Xerox Corporation, Stamford, CT (US);
Abstract
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.