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. 26, 2016
Filed:
Aug. 29, 2014
Tomohiro Nakagawa, Kanagawa, JP;
Naohiro Toda, Kanagawa, JP;
Hidefumi Nagashima, Kanagawa, JP;
Juichi Furukawa, Kanagawa, JP;
Ichiroh Fujii, Kanagawa, JP;
Tomohiro Nakagawa, Kanagawa, JP;
Naohiro Toda, Kanagawa, JP;
Hidefumi Nagashima, Kanagawa, JP;
Juichi Furukawa, Kanagawa, JP;
Ichiroh Fujii, Kanagawa, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
Aqueous ink for inkjet that contains water; a hydrosoluble organic solvent; a pigment; and a resin, wherein the hydrosoluble organic solvent comprises 2,3-butane diol having a total ratio of (2R, 3R) form and (2S, 3S) form of greater than 50% by weight in 2,3-butane diol, where (2R, 3R) form represents (2R, 3R)-(−)-2,3-butane diol and (2S, 3S) form represents (2S, 3S)-(+)-2,3-butane diol, wherein 2,3-butane diol accounts for 5% by weight to 40% by weight of the entire of the aqueous ink.