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:
Jul. 24, 2007
Filed:
Feb. 27, 2006
Shin-ichi Sato, Kawasaki, JP;
Jun Yoshizawa, Tokyo, JP;
Kunihiko Nakamura, Gotenba, JP;
Kumiko Mafune, Kawasaki, JP;
Hideki Takayama, Fujisawa, JP;
Daiji Okamura, Yokohama, JP;
Shin-ichi Sato, Kawasaki, JP;
Jun Yoshizawa, Tokyo, JP;
Kunihiko Nakamura, Gotenba, JP;
Kumiko Mafune, Kawasaki, JP;
Hideki Takayama, Fujisawa, JP;
Daiji Okamura, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
To provide an ink jet black ink which has a favorable tint for ink jet black ink, provides high ozone fastness, a high image density, and high sticking recovery property, and is capable of suppressing the decomposition of a compound represented by the following general formula (I) or a salt thereof at the time of storage for a long time period. The ink jet black ink is an ink jet black ink comprising at least a compound represented by the following general formula (I) or a salt thereof as a coloring material, and ethylene glycol or diethylene glycol, wherein the content of ethylene glycol or diethylene glycol is 15 mass % or more and 30 mass % or less with respect to the total mass of the ink jet black ink. General formula (I)