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:
Jul. 16, 1991
Filed:
Jun. 15, 1989
Masayuki Mishima, Wakayama, JP;
Harumasa Yamasaki, Wakayama, JP;
Takashi Matsuse, Wakayama, JP;
Tadashi Sakuma, Wakayama, JP;
Hiroyasu Togashi, Wakayama, JP;
KAO Corporation, Tokyo, JP;
Abstract
A photoreceptor useful for electrophotography and comprises (a) an electrically conductive substrate, (b) an electric charge carrier generation layer and (c) an electric charge carrier transport layer containing therein an electric charge carrier transport compound having the formula (1): ##STR1## in which R.sub.1, R.sub.1 ' and R.sub.1 ' each are hydrogen, a linear or branched alkyl, a linear or branched alkyl having a substituent(s), an aryl or an aryl having a substituent(s), R.sub.2, R.sub.3, R.sub.2 ', R.sub.3 ', R.sub.2 ' and R.sub.3 ' each are hydrogen, a linear or branched alkyl, a linear or branched alkyl having a substituent(s), an aryl, an aryl having a substituent(s), an alkenyl, an alkenyl having a substituent(s), a heterocyclic ring or a heterocyclic ring having a substituent(s), R.sub.2 and R.sub.3 may form a ring with their adjacent carbon, R.sub.2 ' and R.sub.3 ' may form a ring with their adjacent carbon and R.sub.2 ' and R.sub.3 ' may form a ring with their adjacent carbon and, A is a trivalent, aromatic hydrocarbon group.