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:
Nov. 20, 2007
Filed:
Apr. 24, 2006
Yoichi Takada, Yokohama, JP;
Nobuyuki Matsumoto, Tokyo, JP;
Itaru Tsuji, Kawasaki, JP;
Yuko Takada, Yokohama, JP;
Shinichi Hakamada, Kawasaki, JP;
Sadayuki Sugama, Tsukuba, JP;
Masashi Tsujimura, Kawasaki, JP;
Fumiaki Fujioka, Tokyo, JP;
Yoichi Takada, Yokohama, JP;
Nobuyuki Matsumoto, Tokyo, JP;
Itaru Tsuji, Kawasaki, JP;
Yuko Takada, Yokohama, JP;
Shinichi Hakamada, Kawasaki, JP;
Sadayuki Sugama, Tsukuba, JP;
Masashi Tsujimura, Kawasaki, JP;
Fumiaki Fujioka, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An ink to be used in an ink jet recording method of ejecting an ink from a recording head through action of thermal energy can improve the ink ejection stability and shows a high storage stability and a high color developability. An ink to be used in an ink jet recording method of ejecting an ink from a recording head through action of thermal energy is characterized in that the ink comprises a pigment represented by the general formula (1), a dispersant, a water-soluble organic compound and an aggregation inhibiting substance for inhibiting aggregation after dispersion breakdown of the pigment, and the content (mass %) of the aggregation inhibiting substance with respect to the total mass of ink is 0.4 times or more to less than 1.3 times of the content (mass %) of the pigment with respect to the total mass of ink