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:
Jul. 24, 2007
Filed:
Dec. 30, 2005
Daiji Okamura, Yokohama, JP;
Shin-ichi Sato, Kawasaki, JP;
Jun Yoshizawa, Shibuya, JP;
Kunihiko Nakamura, Gotenba, JP;
Tomohiro Yamashita, Kawasaki, JP;
Masanori Jinnou, Yokohama, JP;
Daiji Okamura, Yokohama, JP;
Shin-ichi Sato, Kawasaki, JP;
Jun Yoshizawa, Shibuya, JP;
Kunihiko Nakamura, Gotenba, JP;
Tomohiro Yamashita, Kawasaki, JP;
Masanori Jinnou, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An ink jet ink is disclosed which includes water, a water-soluble organic solvent and a coloring material and has excellent properties. The coloring material is a specific phthalocyanine derivative and is contained in a specific amount in the ink. The water-soluble organic solvent includes a specific amount of 2-pyrrolidone. In addition, a dvalue is in a specific range where the dvalue corresponds to 75% of a dispersion distance distribution, measured by a small angle X-ray scattering method, of molecular aggregates in the ink jet ink whose coloring material concentration is adjusted to 0.5 mass %.