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:
Jun. 03, 2008
Filed:
Jun. 01, 2004
Takaaki Ikegami, Susono, JP;
Tomoyuki Shimada, Shizuoka-ken, JP;
Yasuo Suzuki, Fuji, JP;
Nozomu Tamoto, Numazu, JP;
Hidetoshi Kami, Numazu, JP;
Yuuji Takana, Fujinomiya, JP;
Takaaki Ikegami, Susono, JP;
Tomoyuki Shimada, Shizuoka-ken, JP;
Yasuo Suzuki, Fuji, JP;
Nozomu Tamoto, Numazu, JP;
Hidetoshi Kami, Numazu, JP;
Yuuji Takana, Fujinomiya, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A photoreceptor including an electroconductive substrate; a photosensitive layer; and optionally a protective layer, wherein an outermost layer thereof includes a filler, an organic compound having an acid value of from 10 to 700 mg KOH/g and at least one compound selected from the group consisting of compounds having the following formulae (1) and (2): wherein R(R) and R(R) independently represent a substituted or an unsubstituted aromatic hydrocarbon group, or a substituted or an unsubstituted alkyl group, and optionally share bond connectivity to form a heterocyclic group including a nitrogen atom; Ar(Ar) and Ar(Ar) independently represent a substituted or a unsubstituted aromatic ring group; k (K) and m (M) independently represent 0 or an integer of from 1 to 3, wherein k (K) and m (M) are not 0 at the same time; and n (n') represents an integer of from 1 to 3.