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:
Aug. 24, 2010
Filed:
Mar. 16, 2004
Narumi Koga, Nagoya, JP;
Masaya Fujioka, Nagoya, JP;
Kazuma Goto, Nagoya, JP;
Mayuko Okada, Toyota, JP;
Tatsunosuke Hoshi, Nagoya, JP;
Narumi Kawai, Nagoya, JP;
Shunichi Higashiyama, Yotsukaichi, JP;
Junichiro Sugimoto, Aichi-ken, JP;
Hideo Ohira, Tajimi, JP;
Michiko Aoyama, Nagoya, JP;
Narumi Koga, Nagoya, JP;
Masaya Fujioka, Nagoya, JP;
Kazuma Goto, Nagoya, JP;
Mayuko Okada, Toyota, JP;
Tatsunosuke Hoshi, Nagoya, JP;
Narumi Kawai, Nagoya, JP;
Shunichi Higashiyama, Yotsukaichi, JP;
Junichiro Sugimoto, Aichi-ken, JP;
Hideo Ohira, Tajimi, JP;
Michiko Aoyama, Nagoya, JP;
Brother Kogyo Kabushiki Kaisha, Aichi-Ken, JP;
Abstract
A water base ink for ink-jet recording contains a self-dispersible coloring agent, a propylene glycol ether, and a surfactant represented by the following general formula (3):R—O—(CHCHO)—SOM  (3) wherein Rrepresents an alkyl group having a number of carbon atoms of 12 to 15, M represents Na or triethanolamine, and n represents an integer of 2 to 4, and wherein the propylene glycol ether is dipropylene glycol propyl ether. The ink satisfies three requirements of i) the satisfactory initial introduction performance of the ink into an ink flow passage of a stacked type printer head, ii) the prevention of the occurrence of feathering, and iii) the prevention of the insufficient spread of the ink.