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:
Apr. 27, 2010
Filed:
Jul. 30, 2008
Hajime Suzuki, Kofu, JP;
Tsuyoshi Ueda, Kofu, JP;
Toshihiko Koizumi, Kofu, JP;
Hideki Nakamura, Kofu, JP;
Tetsuya Sakuma, Kofu, JP;
Hajime Suzuki, Kofu, JP;
Tsuyoshi Ueda, Kofu, JP;
Toshihiko Koizumi, Kofu, JP;
Hideki Nakamura, Kofu, JP;
Tetsuya Sakuma, Kofu, JP;
Yamanashi Electronics Co., Ltd., Kofu-Shi, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An electrophotographic photoreceptor which can respond to a reduction in diameter of photoreceptor and a process having high circumferential speed, due to the demand in the miniaturization and increase in the speed of copiers and printers. The photoreceptor has high sensitivity in long-wavelength region, and is free from deterioration of electric characteristics even after repeated use, and is highly stable. The electrophotographic photoreceptor has a conductive support member and a photosensitive layer laminated thereon, which includes at least a charge-generating agent, a charge-transfer agent, and a binder resin. The charge-generating agent is oxytitanium phthalocyanine, which has a Bragg angle (2θ±0.2°) providing a maximum peak at 27.2° in the X-ray diffraction spectra using CuKα as a radiation source.