ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS

• US 20120114375A1
• Filed: 09/03/2010
• Published: 05/10/2012
• Est. Priority Date: 09/04/2009
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Fujii, Atsushi, Tsuji, Haruyuki, Matsuoka, Hideaki, Shida, Kazuhisa, Nakamura, Nobuhiro
• Granted Patent: US 9,256,145 B2
• Time in Patent Office: Days
• US Class Current: 399/111
• CPC Class Codes: G03G 5/08 characterised by the photoconductive material being inorganic
• CPC Class Codes: G03G 5/104 comprising inorganic material other than metals, e.g. salts, oxides, carbon
• CPC Class Codes: G03G 5/142 Inert intermediate layers
• CPC Class Codes: G03G 5/144 comprising inorganic material

Abstract

An electrophotographic photosensitive member that can not easily cause charging lines even where it is an electrophotographic photosensitive member employing as a conductive layer a layer containing metal oxide particles is disclosed. Also disclosed are a process cartridge and an electrophotographic apparatus which have such an electrophotographic photosensitive member. The electrophotographic photosensitive member has a conductive layer which contains titanium oxide particles coated with tin oxide doped with phosphorus or tungsten.

Claims

1. An electrophotographic photosensitive member comprising a support, a conductive layer formed on the support, and a photosensitive layer formed on the conductive layer, wherein;

the conductive layer contains a binding material, and titanium oxide particles coated with tin oxide doped with phosphorus or tungsten.

2. The electrophotographic photosensitive member according to claim 1, wherein the conductive layer has a volume resistivity of from 5.0×

10⁸ Ω

·

cm or more to 1.0×

10¹³ Ω

·

cm or less.

3. A process cartridge which integrally supports the electrophotographic photosensitive member according to claim 1 and at least one means selected from the group consisting of a charging means, a developing means, a transfer means and a cleaning means, and is detachably mountable to the main body of an electrophotographic apparatus.

4. An electrophotographic apparatus which comprises the electrophotographic photosensitive member according to claim 1, and a charging means, an exposure means, a developing means and a transfer means.