Silsesquioxane compositions containing tertiary arylamines for hole transport

US6517984B1 · kind B1 · utility

Assignee

• Heidelberger Druckmaschinen AG · DE

Inventors

• Wayne T. Ferrar · Fairport, US
• Jane Robinson Cowdery-Corvan · Webster, US
• William T. Gruenbaum · Rochester, US
• Jeanne E. Kaeding · Rochester, US
• Michel F. Molaire · Rochester, US
• Louis J. Sorriero · Rochester, US
• David S. Weiss · Corning, US

Key dates

• Filing date: Mar 27, 2001
• Grant date: Feb 11, 2003
• Expiry date: Mar 27, 2021

Classification

• Technology area (CPC G): Physics
• CPC primary: G03G5/14786
• WIPO field: Optics
• WIPO sector: Instruments

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.