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:
Sep. 11, 2012
Filed:
Nov. 25, 2008
Takaaki Ikegami, Susono, JP;
Takeshi Takada, Yokohama, JP;
Toshihiko Koizumi, Kofu, JP;
Hideki Nakamura, Kofu, JP;
Hajime Suzuki, Kofu, JP;
Keisuke Shimoyama, Numazu, JP;
Kohsuke Yamamoto, Numazu, JP;
Eiji Kurimoto, Numazu, JP;
Takaaki Ikegami, Susono, JP;
Takeshi Takada, Yokohama, JP;
Toshihiko Koizumi, Kofu, JP;
Hideki Nakamura, Kofu, JP;
Hajime Suzuki, Kofu, JP;
Keisuke Shimoyama, Numazu, JP;
Kohsuke Yamamoto, Numazu, JP;
Eiji Kurimoto, Numazu, JP;
Ricoh Company, Ltd., Tokyo, JP;
Yamanashi Electronics Co., Ltd., Yamanashi, JP;
Abstract
An electrophotographic photoconductor including a conductive support and a photosensitive layer, wherein the photosensitive layer contains a charge generation agent, a charge transport agent and a binder resin, and wherein the charge generation agent contains an asymmetric disazo pigment represented by General Formula (I), the charge transport agent contains a triphenylamine compound represented General Formula (IX), and the mass ratio of the charge transport agent to the binder resin is 0.3 to 2.0, where Rand Reach represent a substituted or unsubstituted alkyl group, alkoxy group, aryl group or heterocyclic group, provided that Rand Rare different, where Rto Reach represent hydrogen, a halogen atom, an alkyl group having 1 to 6 carbon atoms, which may have a substituent, an alkoxy group having 1 to 6 carbon atoms, which may have a substituent, or a substituted or unsubstituted aryl group having 6 to 12 carbon atoms.