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. 08, 2009
Filed:
Dec. 21, 2004
Applicants:
Hajime Suzuki, Kofu, JP;
Tadayoshi Uchida, Kofu, JP;
Ryoji Kobayashi, Kofu, JP;
Inventors:
Assignee:
Yamanashi Electronics Co., Ltd., Yamanashi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 5/14 (2006.01); G03G 5/047 (2006.01);
U.S. Cl.
CPC ...
Abstract
An electrophotographic photoreceptor that without detriment to excellent electrophotographic performance, realizes coating of any defects on a conductive substrate and excels in repetition stability and environmental performance. There is provided an electrophotographic photoreceptor having a photoreceptive layer superimposed via an undercoat layer on a conductive support, characterized in that the undercoat layer contains a polyimide resin and that at least one of the compounds of the following formulae is contained as a charge transfer agent of the photoreceptive layer.