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. 18, 2003
Filed:
Feb. 15, 2000
Yohta Sakon, Shizuoka-ken, JP;
Narihito Kojima, Shizuoka-ken, JP;
Minoru Umeda, Shizuoka-ken, JP;
Masao Yoshikawa, Kanagawa-ken, JP;
Hiroshi Nagame, Shizuoka-ken, JP;
Ryuta Takeichi, Kanagawa-ken, JP;
Akiyo Namiki, Kanagawa-ken, JP;
Ricoh Company Ltd., Tokyo, JP;
Abstract
An electrophotographic photoreceptor including an electroconductive substrate and a photoreceptive layer, which is formed overlying the substrate, wherein the photoreceptive layer includes a charge carrier generation layer including a charge carrier generation material and a charge carrier transport layer including a charge carrier transport material, and wherein when an electric field of from 2.5×10 V/cm to 5.5×10 V/cm is applied to the charge carrier transport layer, the relationship, t /&mgr; ≦1.5×10 V·s/m, is satisfied, wherein t represents a thickness of the charge carrier transport layer and &mgr; represents a charge mobility of the charge carrier transport layer.