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:
Dec. 04, 2001
Filed:
Nov. 15, 2000
John S. Chambers, Rochester, NY (US);
Huoy-Jen Yuh, Pittsford, NY (US);
Michael Sanchez, Fairport, NY (US);
Harold F. Hammond, Webster, NY (US);
Helen R. Cherniack, Rochester, NY (US);
Robert C. U. Yu, Webster, NY (US);
John S. Facci, Webster, NY (US);
Rachael McGrath, Churchville, NY (US);
Xerox Corporation, Stamford, CT (US);
Abstract
A charge transport layer material for a photoreceptor includes at least a polycarbonate polymer, at least one charge transport material, polytetrafluoroethylene particle aggregates having an average size of less than about 1.5 microns, hydrophobic silica and a fluorine-containing polymeric surfactant dispersed in a solvent. The presence of the hydrophobic silica enables the dispersion to have superior stability by preventing settling of the PTFE particles. A resulting charge transport layer produced from the dispersion exhibits excellent wear resistance against contact with an AC bias charging roll, excellent electrical performance, and delivers superior print quality.