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:
Jan. 02, 2007
Filed:
May. 06, 2004
Mary L. MC Stravick, Fairport, NY (US);
Paul C. Julien, Webster, NY (US);
Sue E. Blaszak, Fairport, NY (US);
William H. Hollenbaugh, Jr., Rochester, NY (US);
Mary L. Mc Stravick, Fairport, NY (US);
Paul C. Julien, Webster, NY (US);
Sue E. Blaszak, Fairport, NY (US);
William H. Hollenbaugh, Jr., Rochester, NY (US);
Xerox Corporation, Stamford, CT (US);
Abstract
A black toner of toner particles including at least one binder, at least one black colorant, and a package of external additives is described, wherein the at least one binder includes a styrene acrylate binder and wherein the external additives include each of a first silica having an average particle size of from about 35 to about 45 nm, a second silica having an average particle size of from about 135 to about 160 nm, and a titania having an average particle size of from about 35 to about 45 nm. Also described is a developer that includes the black toner and carrier particles comprising a core of ferrite coated with a coating comprising a polymethyl methacrylate polymer and fluoro-copolymer, carbon black and melamine beads. The black toner and developer are preferably used in a semiconductive magnetic brush development system.