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:
Dec. 06, 2011
Filed:
Feb. 18, 2009
Minako Kawabe, Koganei, JP;
Hiroshi Tomioka, Tokyo, JP;
Kumiko Mafune, Kawasaki, JP;
Hideki Yamakami, Kawasaki, JP;
Satomi Yanagimachi, Yokosuka, JP;
Minako Kawabe, Koganei, JP;
Hiroshi Tomioka, Tokyo, JP;
Kumiko Mafune, Kawasaki, JP;
Hideki Yamakami, Kawasaki, JP;
Satomi Yanagimachi, Yokosuka, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An ink jet ink is provided which can retain good stability and shows superior intermittent ejection stability not only under a low-temperature, low-humidity environment but also a high-temperature, low-humidity environment even when the evaporation of water in the ink progresses. The ink jet ink includes a coloring material and water-soluble organic solvents, wherein the content of the coloring material is less than 7.0 mass %, the water-soluble organic solvents include glycerin and a branched alkanediol having hydroxyl groups at both terminals of its main chain, the content C of glycerin is 6.0 to 12.0 mass %, the content A of the branched alkanediol is 4.0 to 11.0 mass %, and the content A of the branched alkanediol and the total content B of the water-soluble organic solvents satisfy the relationship of 0.30≦A/B≦0.50.