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:
Feb. 12, 2013
Filed:
Dec. 18, 2009
Kaoru Tojo, Kanagawa, JP;
Masao Ikoshi, Kanagawa, JP;
Teppei Yamamoto, Kanagawa, JP;
FUJIFILM Corporation, Tokyo, JP;
Abstract
The invention provides an ink composition containing at least: a water-soluble organic solvent; a pigment; water; and a nonionic polymer thickener. The content of the water-soluble organic solvent is from 5 weight % to 30 weight % relative to the total amount of the ink composition. The ratio of V/V, in which Vrepresents 25° C. viscosity (mPa·s) measured at a shear rate of 1.5×10(s) and Vrepresents 25° C. viscosity (mPa·s) measured at a shear rate of 3.0×10(s), is from 0.70 to 0.95. The invention further provides an image formation method including at least ejecting the ink composition onto an image recording medium using an image formation apparatus to form an image on the image recording medium.