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. 28, 1983
Filed:
Sep. 22, 1981
Applicant:
Inventors:
Shozo Ishikawa, Mitaka-shi, Tokyo, JP;
Kazuharu Katagiri, Mitaka-shi, Tokyo, JP;
Katsunori Watanabe, Mitaka-shi, Tokyo, JP;
Makoto Kitahara, Mitaka-shi, Tokyo, JP;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ; G03G / ;
U.S. Cl.
CPC ...
430 59 ; 430 58 ; 430 72 ; 430 74 ; 430 75 ; 430 76 ; 430 77 ; 430 78 ; 430 79 ; 260152 ; 260156 ; 260157 ; 260158 ; 260165 ; 260164 ; 260173 ; 260174 ; 260177 ; 260178 ; 260179 ; 260172 ; 260181 ; 260184 ; 260194 ; 260195 ; 260196 ; 260199 ;
Abstract
An electrophotographic photosensitive member having a photosensitive layer is characterized in that said photosensitive layer contains azo pigments having at least one of azo groups linked to a coupler residue represented by the following formula [1] or [2]: ##STR1## wherein R.sub.1 and R.sub.3 independently represent hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted aralkyl, or substituted or unsubstituted aryl, and R.sub.2 and R.sub.4 independently represent substituted or unsubstituted aryl.