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. 27, 2010
Filed:
Feb. 13, 2007
Aqueous ink, ink-jet recording method, ink cartridge, recording unit and ink jet recording apparatus
Kouhei Nakagawa, Yokohama, JP;
Shinichi Hakamada, Kawasaki, JP;
Tetsu Iwata, Yokohama, JP;
Masashi Ogasawara, Machida, JP;
Masashi Tsujimura, Kawasaki, JP;
Shuichi Okazaki, Fujisawa, JP;
Kouhei Nakagawa, Yokohama, JP;
Shinichi Hakamada, Kawasaki, JP;
Tetsu Iwata, Yokohama, JP;
Masashi Ogasawara, Machida, JP;
Masashi Tsujimura, Kawasaki, JP;
Shuichi Okazaki, Fujisawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An aqueous ink to be used in an ink jet recording method that an ink is ejected from a recording head by the action of thermal energy, wherein the ink contains a pigment, a polymer and a water-soluble organic solvent, the hydrophilicity δm of the pigment falls within a range of from 21.5 or more to 23.5 or less, and the content (mass %) of the water-soluble organic solvent is from 5.0 mass % or more to 17.5 mass % or less with respect to the whole mass of the aqueous ink.