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:
Apr. 03, 2001
Filed:
Apr. 28, 2000
Electrophotographic photoconductor, and process cartridge and image forming apparatus using the same
Kazukiyo Nagai, Shizuoka, JP;
Tetsuro Suzuki, Shizuoka, JP;
Masaomi Sasaki, Shizuoka, JP;
Kohkoku Ri, Shizuoka, JP;
Shinichi Kawamura, Shizuoka, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An electrophotographic photoconductor has an electroconductive support and a photoconductive layer formed thereon, a surface top portion of the photoconductor containing a high-molecular charge transport material including a polycarbonate copolymer synthesized from (a) a bisphenol monomer with an ionization potential of 6.0 eV or less, having a positive hole transporting function, and (b) a bisphenol monomer having a substituent at the o-position with respect to at least one hydroxyl group thereof, the substituent being bulkier than a fluorine atom. A process cartridge holds the above-mentioned photoconductor therein, and an electrophotographic image forming apparatus is provided with the above-mentioned photoconductor or process cartridge.