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:
Aug. 03, 1993
Filed:
Dec. 20, 1991
Applicant:
Inventors:
Mitsutoshi Anzai, Tokyo, JP;
Noboru Akuzawa, Tokyo, JP;
Yuuji Matsuura, Tokyo, JP;
Kayoko Watanabe, Tokyo, JP;
Assignee:
Hodogaya Chemical Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
430110 ;
Abstract
Provided is a toner for electrophotography, comprising a binder resin, a colorant and a charge control agent; said charge control agent comprising an aluminum compound represented by the following formula: ##STR1## wherein R.sub.1 represents an alkyl group, a cycloalkyl group or an aralkyl group; R.sub.2 represents a hydrogen atom, an alkyl group, a cycloalkyl group, an aralkyl group, an aryl group, a hydroxyl group or an alkoxyl group; n represents an integer of 2 or 3; and M represents a hydrogen atom, an alkali metal, or an ammonium, aliphatic ammonium or alicyclic ammonium ion.