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:
Mar. 27, 1990
Filed:
Dec. 22, 1988
Hisao Kouno, Funabashi, JP;
Hiroaki Saikatsu, Koshigaya, JP;
Osamu Suda, Ohmiya, JP;
Tetsuhiro Umezaki, Koshigaya, JP;
Norio Tanaka, Adachi, JP;
Toshifumi Sekino, Kawaguchi, JP;
Masaru Hasegawa, Shibuya, JP;
Yoshio Abe, Iwatsuki, JP;
Shojiro Horiguchi, Ohmiya, JP;
Dainichi Seika Color & Chemicals Mfg. Co., Ltd., Tokyo, JP;
Abstract
An electrophotographic photoreceptor is provided with a photosensitive layer, which contains an azo compound having in the molecule thereof at least one azo group coupled with a couple residuum represented by the following general formula (I): ##STR1## wherein X means an atomic group necessary for condensing with a benzene ring to form a substituted or unsubstituted aromatic hydrocarbon ring, or substituted or unsubstituted aromatic heterocyclic ring, Y denotes a radical selected from the group consisting of hydrogen, halogen atoms, cyano radicals, and substituted or unsubstituted alkyl, or alkoxy group, and n stands for an integer of 0.about.4, R.sub.1 and R.sub.2 designate, respectively, hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted alalkyl, substituted or unsubstituted aromatic hydrocarbon ring or substituted or unsubstituted aromatic heterocyclic ring, and said R.sub.1 and R.sub.2 may be mutually same or different, or may form a ring together with nitrogen atom.