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:
Apr. 25, 1989
Filed:
Jul. 30, 1987
Toshihiko Matuura, Okegawa, JP;
Kenzi Sawaki, Chiba, JP;
Seizin Shindo, Yono, JP;
Michiko Torigoe, Tokyo, JP;
Nippon Kayaku Kabushiki Kaisha, Tokyo, JP;
Abstract
A toner for an electrophotographic process which comprises a complex salt compound represented by the following formula (1) ##STR1## wherein X represents Cl, Br, So.sub.2 NH.sub.2, So.sub.2 CH.sub.3 or So.sub.2 C.sub.2 H.sub.5 and A.sym. represents an alkenyl or alkylammonium ion of 17-28 carbon atoms. The complex salt compound of the formula (1) acts as a negative charge control agent in the toner and is good in compatibility with a binder and the toner prepared using it is excellent in specific chargeability and durability of charge.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile