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. 28, 2008
Filed:
Mar. 18, 2005
Daisuke Ishihara, Nagano-Ken, JP;
Daisuke Ishihara, Nagano-Ken, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
There is provided a water-base ink composition which has excellent ejection stability and can be evenly printed on recording media. The water-base ink composition comprises at least: a colorant component selected from dyes and pigments; a monovalent or divalent branched alcohol with C5 to C10 chain length; an acetylene glycol surfactant and/or a penetrating organic solvent; a humectant; and water. The monovalent or divalent branched alcohol with C5 to C10 chain length, the acetylene glycol surfactant and/or the penetrating organic solvent, and the humectant are selected from combinations of branched alcohols, acetylene glycol surfactants and/or penetrating organic solvents, and humectants which are miscible with one another.