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:
Jun. 30, 2009
Filed:
Jul. 07, 2005
Noriatsu Aoi, Ichinomiya, JP;
Akihiko Taniguchi, Haguri-gun, JP;
Ryuji Kato, Ama-gun, JP;
Hideo Ohira, Tajimi, JP;
Masaya Fujioka, Nagoya, JP;
Shunichi Higashiyama, Yotsukaichi, JP;
Noriatsu Aoi, Ichinomiya, JP;
Akihiko Taniguchi, Haguri-gun, JP;
Ryuji Kato, Ama-gun, JP;
Hideo Ohira, Tajimi, JP;
Masaya Fujioka, Nagoya, JP;
Shunichi Higashiyama, Yotsukaichi, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya, JP;
Abstract
A water base ink for ink-jet recording contains self-dispersible carbon black as a coloring agent. The total content of an organic acid having a number of carbon or carbons of 1 to 6 and a salt of the organic acid is not more than 400 ppm. The organic acid having a number of carbon or carbons of 1 to 6 includes monocarboxylic acid, dicarboxylic acid and oxy acid, and the salt of the organic acid includes salts of these acids. When the water base ink is used in an ink-jet recording apparatus, the discharge stability of the ink is improved.