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. 08, 2009
Filed:
Jul. 01, 2003
Koichi Sato, Kanagawa-ken, JP;
Ikuo Nakazawa, Kanagawa-ken, JP;
Sakae Suda, Kanagawa-ken, JP;
Masayuki Ikegami, Kanagawa-ken, JP;
Keiichiro Tsubaki, Kanagawa-ken, JP;
Koichi Sato, Kanagawa-ken, JP;
Ikuo Nakazawa, Kanagawa-ken, JP;
Sakae Suda, Kanagawa-ken, JP;
Masayuki Ikegami, Kanagawa-ken, JP;
Keiichiro Tsubaki, Kanagawa-ken, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
The invention provides a block polymer compound enabling satisfactory dispersion of a colorant in a solvent, and an ink composition containing such block polymer compound. The block polymer compound of the invention is a block polymer compound having at least three block segments, comprising block segments A, B and C arranged in succession, wherein the block segment C is most solvent attractive while the block segment A is most solvent repulsive, and at least either one of the block segments includes an ionic group or an acidic group.