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. 18, 2005
Filed:
Aug. 12, 2003
Hiroshi Ikuno, Yokohama, JP;
Hidetoshi Kami, Numazu, JP;
Ryohichi Kitajima, Numazu, JP;
Narihito Kojima, Numazu, JP;
Akihiko Matsuyama, Isehara, JP;
Hiroshi Nagame, Numazu, JP;
Katsuichi Ohta, Mishima, JP;
Tetsuro Suzuki, Fuji, JP;
Nozomu Tamoto, Numazu, JP;
Hiroshi Tamura, Susono, JP;
Yohta Sakon, Numazu, JP;
Eiji Kurimoto, Numazu, JP;
Tatsuya Niimi, Numazu, JP;
Yuka Miyamoto, Numazu, JP;
Hiroshi Ikuno, Yokohama, JP;
Hidetoshi Kami, Numazu, JP;
Ryohichi Kitajima, Numazu, JP;
Narihito Kojima, Numazu, JP;
Akihiko Matsuyama, Isehara, JP;
Hiroshi Nagame, Numazu, JP;
Katsuichi Ohta, Mishima, JP;
Tetsuro Suzuki, Fuji, JP;
Nozomu Tamoto, Numazu, JP;
Hiroshi Tamura, Susono, JP;
Yohta Sakon, Numazu, JP;
Eiji Kurimoto, Numazu, JP;
Tatsuya Niimi, Numazu, JP;
Yuka Miyamoto, Numazu, JP;
Ricoh Company Limited, Tokyo, JP;
Abstract
An electrophotographic photoreceptor including an electroconductive substrate; a photosensitive layer located overlying the electroconductive substrate and including a resin; and a surface layer including a filler and a binder resin, wherein the surface layer and the photosensitive layer have a continuous structure, and wherein the surface layer satisfies the following relationship: σ≦D/5, wherein D represents an average of maximum thicknesses of the surface layer in units of micrometers in 20 segments of 5 μm wide when a portion of a cross section of the photoreceptor of 100 μm wide is divided into the 20 segments, and σ represents a standard deviation of the 20 maximum thicknesses.