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:
Nov. 17, 1981
Filed:
May. 01, 1980
Takenori Funatsu, Fuji, JP;
Masuhiko Maejima, Fuji, JP;
Yoichi Inuzuka, Fuji, JP;
Kosaku Tsuji, Fuji, JP;
Toyo Ink Mfg. Ltd., Tokyo, JP;
Abstract
An azo pigment suitable for use in gravure printing ink is produced by treating 100 parts by weight of a starting azo pigment with from 1 to 30 parts by weight of an amine, from 0.1 to 0.5 equivalent of a fatty acid and/or rosin or a derivative thereof, based on the amine, and from 0.5 to 50 parts by weight of a resin containing carboxyl groups and having an acid value of at least 50. The thus-produced azo pigment may be formulated in gravure printing ink, which exhibits improved gloss, flowability and aging discoloration characteristics. Such an ink practically does not penetrate through even when printed on cheap paper or uncoated paper.