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. 09, 1995
Filed:
Apr. 13, 1994
Yuji Matsuura, Tsukuba, JP;
Osamu Mukudai, Tsukuba, JP;
Mitsutoshi Anzai, Tsukuba, JP;
Kayoko Watanabe, Tsukuba, JP;
Hodogaya Chemical Co., Ltd., Tokyo, JP;
Abstract
An electrophotographic toner containing a compound of the following formula (1): ##STR1## wherein X is a wherein A is an electron attractive group, and each of R.sub.1 and R.sub.2 which are independent of each other, is a hydrogen atom, a halogen atom, an alkyl group, a cycloalkyl group, an alkoxy group, an aryl group, an aralkyl group or a hydroxyl group, or R.sub.1 and R.sub.2 together form a ring), ##STR2## wherein A, R.sub.1 and R.sub.2 are as defined above), or ##STR3## wherein A, R.sub.1 and R.sub.2 are as defined above), and Y is a hydrogen atom, an alkyl group or an aryl group.