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:
Jan. 15, 2013
Filed:
Sep. 17, 2009
Hirofumi Hayata, Fuchu, JP;
Takeshi Ishida, Hachioji, JP;
Masahiko Kurachi, Hino, JP;
Toshiyuki Fujita, Hachioji, JP;
Seisuke Maeda, Akishima, JP;
Seijiro Takahashi, Hachioji, JP;
Hirofumi Hayata, Fuchu, JP;
Takeshi Ishida, Hachioji, JP;
Masahiko Kurachi, Hino, JP;
Toshiyuki Fujita, Hachioji, JP;
Seisuke Maeda, Akishima, JP;
Seijiro Takahashi, Hachioji, JP;
Abstract
Disclosed is an electrophotogaphic photoreceptor that causes little or no abrasion-derived uneven image density and does not cause scratches and image defects attributable to the occurrence of scratches even after a large volume, for example, exceeding 1,000,000 sheets of printing, and that does not cause image blurring even after printing in an environment of a high-temperature and a high-relative humidity (RH) respectively exceeding 30° C. and 80%. The electrophotographic photoreceptor comprises an electroconductive support and at least a photosensitive layer and a surface layer provided on the electroconductive support and is characterized in that the surface layer contains at least a compound obtained by reacting a polymerizable compound containing a methacryl group with particles containing a functional group reactive with the methacryl group and, in the polymerizable compound, the ratio between the number of methacryl groups and the molecular weight (number of methacryl groups/molecular weight) is not less than 0.0055.