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:
Oct. 15, 2013
Filed:
Jun. 07, 2010
Coloring matter consisting of trisazo compound, ink compositions, recording method, and colored body
Takashi Yoshimoto, Tokyo, JP;
Noriko Kajiura, Tokyo, JP;
Takashi Yoshimoto, Tokyo, JP;
Noriko Kajiura, Tokyo, JP;
Nippon Kayaku Kabushiki Kaisha, Tokyo, JP;
Abstract
A coloring matter for black ink which is highly soluble in water-based media, and ink compositions containing the same. The ink compositions can produce black recorded images which exhibit excellent fastness and ozone gas fastness. The coloring matter consists of at least one trisazo compound represented by general formula (1), tautomers thereof, and salts of both. In general formula (1), Ris unsubstituted Calkyl or the like; Ris cyano or the like; Ris a chlorine atom or the like; Rto Rare a hydrogen atom, unsubstituted Calkyl, sulfo-substituted Calkoxy, or the like; Rto Rare a hydrogen atom, unsubstituted Calkyl, sulfo-substituted Calkylthio, or the like; A is sulfo-substituted 2-naphthothiazolyl or the like; and a to d represent the positions at which the ring is substituted with Rand sulfo.