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:
Jul. 14, 2009
Filed:
Dec. 01, 2004
Nozomu Tamoto, Shizuoka, JP;
Tatsuya Niimi, Shizuoka, JP;
Tetsuro Suzuki, Shizuoka, JP;
Katsuichi Ohta, Tokyo, JP;
Nozomu Tamoto, Shizuoka, JP;
Tatsuya Niimi, Shizuoka, JP;
Tetsuro Suzuki, Shizuoka, JP;
Katsuichi Ohta, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An electrophotographic photoconductor that is excellent in the stability of image quality and can realize high durability is provided. In an electrophotographic photoconductor in which an underlying layer, a photoconductive layer, and a crosslinked-type charge transportation layer are stacked on an electrically conductive support in order, the underlying layer is composed of at least two layers being a layer containing an inorganic pigment and a layer including no inorganic pigment, and the crosslinked-type charge transportation layer is formed by curing, at least, a three-or-more-functional radical-polymerizable monomer having no charge transporting structure and a radical-polymerizable compound having one-functional charge transporting structure.