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:
May. 25, 1993
Filed:
Mar. 24, 1992
Yasuyuki Hanatani, Sakai, JP;
Hiroaki Iwasaki, Hirakata, JP;
Mita Industrial Co., Ltd., Osaka, JP;
Abstract
The present invention provides a phenylenediamine derivative of the following general formula (1). This derivative is excellent in photostability. Accordingly, when this derivative is contained in a photosensitive layer as an electric charge transferring material, there may be obtained an electrophotosensitive material excellent in photostability. ##STR1## [wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are the same as or different from one another. Each of A.sup.1 and A.sup.2 is a hydrogen atom or the following group: ##STR2## (wherein R.sup.6 and R.sup.7 are the same as or different from each other, and each is a hydrogen atom, an alkyl group, an alkoxy group, an aryl group, an aralkyl group or a heterocyclic group; the alkyl group, the alkoxy group, the aryl group, the aralkyl group and the heterocyclic group may have respective substituting groups; n is 0 or 1. A.sup.1 and A.sup.2 are not hydrogen atoms simultaneously. R.sup.6 and R.sup.7 are not hydrogen atoms simultaneously.)]