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:
Sep. 13, 2011
Filed:
May. 05, 2008
Daiji Okamura, Yokohama, JP;
Hiroyuki Takuhara, Yaita, JP;
Yuuki Nishino, Tokyo, JP;
Mikio Sanada, Kawasaki, JP;
Kenji Moribe, Fujisawa, JP;
Satoshi Kudo, Kawasaki, JP;
Daiji Okamura, Yokohama, JP;
Hiroyuki Takuhara, Yaita, JP;
Yuuki Nishino, Tokyo, JP;
Mikio Sanada, Kawasaki, JP;
Kenji Moribe, Fujisawa, JP;
Satoshi Kudo, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An aqueous ink used together with a black ink containing a self-dispersion pigment, wherein the aqueous ink contains a reactive component for destabilizing the dispersion state of the self-dispersion pigment, the dynamic surface tension of the aqueous ink at a lifetime of 30 milliseconds is 41 mN/m or more, and the dynamic surface tension of the aqueous ink at a lifetime of 500 milliseconds is from 28 mN/m or more to 38 mN/m or less as determined by a maximum bubble pressure method.