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. 31, 2004
Filed:
Mar. 06, 2003
Mayuko Okada, Toyota, JP;
Narumi Koga, Nagoya, JP;
Kazuma Goto, Nagoya, JP;
Hiromitsu Sago, Tokai, JP;
Hideto Yamazaki, Nagoya, JP;
Kazuo Kobayashi, Kagamihara, JP;
Tatsunosuke Hoshi, Nagoya, JP;
Michiko Aoyama, Nagoya, JP;
Hideo Ohira, Tajimi, JP;
Shunichi Higashiyama, Yotsukaichi, JP;
Masaya Fujioka, Nagoya, JP;
Yoshito Toyoda, Nagoya, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya, JP;
Abstract
A water base ink for ink-jet recording, which is usable for an ink-jet recording apparatus having an ink-jet head provided therein with an ink flow passage formed of nickel or nickel alloy, includes a coloring agent, water, and a water-soluble organic solvent. The ink is blended so that a current density, which is obtained within an electric potential range of −600 to +300 mV, is not more than 100 &mgr;A/cm when anodic polarization measurement is performed by using a reference electrode of silver/silver chloride, a counter electrode of platinum, and a working electrode of nickel or nickel alloy. The ink does not corrode any part for constituting the flow passage in the ink-jet head.