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:
Dec. 26, 2006
Filed:
Jun. 24, 2005
Narihito Kojima, Numazu, JP;
Ryuta Takeichi, Yokohama, JP;
Akiyo Namiki, Yokohama, JP;
Hiroshi Nagame, Numazu, JP;
Yohta Sakon, Numazu, JP;
Narihito Kojima, Numazu, JP;
Ryuta Takeichi, Yokohama, JP;
Akiyo Namiki, Yokohama, JP;
Hiroshi Nagame, Numazu, JP;
Yohta Sakon, Numazu, JP;
Ricoh Company Limited, Tokyo, JP;
Abstract
An electrophotographic photoreceptor including a photosensitive layer on an electroconductive substrate, wherein nitrate ion is present on the surface of the photosensitive layer in an amount of from 50 to 300 μg per 1 mof the surface of the photosensitive layer when the nitrate ion is determined by an ion chromatographic method. Preferably a material having a fluorine atom and a carbon atom or a fatty acid metal salt such as zinc stearate is further present on the surface of the photosensitive layer such that the F/C ratio is from 0.05 to 0.5 or the Zn/C ratio is from 0.001 to 0.1. An image forming apparatus using the photoreceptor is also provided.