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. 13, 1989
Filed:
Feb. 26, 1988
Tadaichi Murata, Kofu, JP;
Tsuneo Isomura, Kofu, JP;
Kenichi Fujimori, Kofu, JP;
Fuminori Tsuruta, Kofu, JP;
Kazuhito Dohi, Kofu, JP;
Masahiro Horigome, Kofu, JP;
Yoshitarou Nakayama, Kofu, JP;
Sachio Oomori, Kofu, JP;
Shindengen Electric Manufacturing Co., Ltd, Tokyo, JP;
Yamanashi Electronics Co. Ltd., Yamanashi, JP;
Abstract
An electrophotographic photoreceptor having a photosensitive layer containing a butadiene compound represented by general formula ##STR1## wherein A.sub.1 to A.sub.4 are alkyl group, and a hydrazone compound represented by general formula ##STR2## wherein B.sub.1 and B.sub.2 are alkyl, phenyl, benzyl or methoxyphenyl groups, R.sub.1 is hydrogen, alkyl, alkoxy or benzyloxy groups and R.sub.2 is alkyl, phenyl or benzyl groups. The photoreceptor can suppress the photo-deterioration due to cyclic operation and is useful in the field of copying printers.