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:
Sep. 23, 1997
Filed:
Dec. 28, 1994
Hiroyuki Kishi, Numazu, JP;
Toshio Fukagai, Numazu, JP;
Kiyoshi Taniguchi, Numazu, JP;
Tomohiro Inoue, Sagamihara, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A layered type electrophotographic photoconductor includes an electroconductive support; and a photoconductive layer formed thereon, which photoconductive layer contains a charge generation layer and a charge transport layer, which are overlaid, with the charge generation layer containing a polyalkylene glycol and/or a derivative thereof and/or a crown ether, and the charge transport layer containing an antioxidant. Alternatively, an undercoat layer may be interposed between the electroconductive support and the photoconductive layer, with the undercoat layer containing a polyalkylene glycol and/or a derivative thereof and/or a crown ether, and the charge transport layer containing an antioxidant.