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:
Aug. 02, 2011
Filed:
May. 07, 2008
Kenji Moribe, Fujisawa, JP;
Satoshi Kudo, Kawasaki, JP;
Mikio Sanada, Kawasaki, JP;
Hideki Yamakami, Yokohama, JP;
Kenji Moribe, Fujisawa, JP;
Satoshi Kudo, Kawasaki, JP;
Mikio Sanada, Kawasaki, JP;
Hideki Yamakami, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An ink set is provided which can suppress bleeding irrespective of the type of recording medium. The ink set includes a plurality of aqueous inks each containing a dye, and has at least a first aqueous ink containing a dye, wherein the difference between the dynamic surface tension of the first aqueous ink at a lifetime of 50 milliseconds and the dynamic surface tension of the first aqueous ink at a lifetime of 500 milliseconds is 7 mN/m or more; and, between the first aqueous ink and at least one type of aqueous ink except the first aqueous ink included in the ink set, dynamic surface tension γ(mN/m) of an ink A having relatively higher lightness at a lifetime of 500 milliseconds and dynamic surface tension γ(mN/m) of an ink B having relatively lower lightness at a lifetime of 500 milliseconds satisfy −5≦(γ−γ)≦3.