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:
Nov. 13, 2007
Filed:
Dec. 30, 2005
Kuniaki Fujimoto, Tokyo, JP;
Shin-ichi Sato, Kanagawa, JP;
Jun Yoshizawa, Tokyo, JP;
Yoshihide Aikawa, Kanagawa, JP;
Kunihiko Nakamura, Shizuoka, JP;
Masanori Jinnou, Kanagawa, JP;
Kuniaki Fujimoto, Tokyo, JP;
Shin-ichi Sato, Kanagawa, JP;
Jun Yoshizawa, Tokyo, JP;
Yoshihide Aikawa, Kanagawa, JP;
Kunihiko Nakamura, Shizuoka, JP;
Masanori Jinnou, Kanagawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
Provided is an ink jet ink containing a coloring material having a buffer region in an ink use range, the ink jet ink being capable of suppressing the occurrence of the deterioration (dissolution) of a heating portion surface in contact with liquid; and the disconnection of wiring for applying a voltage to a heating portion even when long term continuous printing is performed. The ink jet ink is used for an ink jet recording apparatus equipped with a recording head having a heating portion surface in contact with liquid comprising a metal and/or a metal oxide. The ink jet ink contains a coloring material in a content (mass %) of 3 mass % or more with respect to the total mass of the ink jet ink. The coloring material is a colorant having a buffer region in an ink use range, and comprises a compound represented by the following general formula (I) and/or a compound represented by the following general formula (II) H(OCHCH)R.   General formula (II)