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. 04, 2008
Filed:
Sep. 07, 2007
Satomi Yanagimachi, Yokosuka, JP;
Hiroshi Tomioka, Tokyo, JP;
Hiroyuki Takuhara, Yaita, JP;
Minako Kawabe, Koganei, JP;
Yuuki Nishino, Tokyo, JP;
Satomi Yanagimachi, Yokosuka, JP;
Hiroshi Tomioka, Tokyo, JP;
Hiroyuki Takuhara, Yaita, JP;
Minako Kawabe, Koganei, JP;
Yuuki Nishino, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An ink jet ink which can form images whose bleeding resistance is high and whose bronzing phenomenon is suppressed, is provided. The ink is an ink jet ink for use together with a pigment ink. The ink jet ink is characterized in that: the ink jet ink contains a coloring material, a polyvalent metal and a water-soluble organic solvent(s); the coloring material is at least a compound represented by the general formula (I); a content (mol/g) of the polyvalent metal is 2.0×10mol/g or more and 4.0×10mol/g or less; a total content (mass %) of the water-soluble organic solvent(s) is 25.0 mass % or more with respect to the total mass of the ink; and in 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 %, a dispersion distance dvalue corresponding to 75% of a distribution is 12.60 nm or less.