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:
Aug. 21, 2000
Applicant:
Inventors:
Hiroshi Tamura, Shizuoka-ken, JP;
Hidetoshi Kami, Shizuoka-ken, JP;
Katsuichi Ohta, Shizuoka-ken, JP;
Tetsuro Suzuki, Shizuoka-ken, JP;
Tatsuya Niimi, Shizuoka-ken, JP;
Narihito Kojima, Shizuoka-ken, JP;
Assignee:
Ricoh Company Limited, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G03G 5/047 ;
U.S. Cl.
CPC ...
G03G 5/047 ;
Abstract
An electrophotographic photoreceptor which includes an electroconductive substrate, and a photosensitive layer which is formed overlying the substrate, wherein the photosensitive layer includes a charge generation material, a charge transport polymer material including triarylamine structure and a soft segment in a main chain thereof, and a filler.