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:
Feb. 11, 2003
Filed:
Mar. 27, 2001
Wayne Thomas Ferrar, Fairport, NY (US);
Jane Robinson Cowdery-Corvan, Webster, NY (US);
William Tod Gruenbaum, Rochester, NY (US);
Jeanne Ellen Kaeding, Rochester, NY (US);
Michel Frantz Molaire, Rochester, NY (US);
Louis Joseph Sorriero, Rochester, NY (US);
David Steven Weiss, Rochester, NY (US);
Heidelberger Druckmaschinen AG, Heidelberg, DE;
Abstract
An electrophotographic element comprises: an electrically conducting layer, a charge generating layer overlying the electrically conducting layer, and a charge transport layer overlying the electrically conducting layer. The charge transport layer, which can be an overcoat overlying the charge generating layer, comprises the reaction product in an aqueous medium of a mixture comprising a silsesquioxane polymer and a hole transport compound that comprises a tertiary arylamine containing at least one alcoholic or one phenolic hydroxy substituent.