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. 12, 2006
Filed:
Dec. 24, 2003
Tatsunosuke Hoshi, Nagoya, JP;
Masaya Fujioka, Nagoya, JP;
Hideo Ohira, Tajimi, JP;
Yoshito Toyoda, Nagoya, JP;
Narumi Koga, Nagoya, JP;
Shunichi Higashiyama, Yotsukaichi, JP;
Tatsunosuke Hoshi, Nagoya, JP;
Masaya Fujioka, Nagoya, JP;
Hideo Ohira, Tajimi, JP;
Yoshito Toyoda, Nagoya, JP;
Narumi Koga, Nagoya, JP;
Shunichi Higashiyama, Yotsukaichi, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya, JP;
Abstract
A water base ink for ink-jet recording comprises water, self-dispersing type carbon black, an anionic surfactant, and a nonionic surfactant. The anionic surfactant is a surfactant represented by the formula (1) and/or a surfactant represented by the formula (2). The nonionic surfactant is a surfactant represented by the formula (3) or a mixture of a surfactant represented by the formula (4) and a surfactant represented by the formula (5). No ink discharge failure occurs, the long term stability is excellent, and it is possible to obtain a high quality image without any feathering.