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:
Oct. 06, 2009
Filed:
Mar. 30, 2006
Masahiro Hanmura, Kanagawa-Ken, JP;
Miharu Kanaya, Nagano-Ken, JP;
Masahiro Hanmura, Kanagawa-Ken, JP;
Miharu Kanaya, Nagano-Ken, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
There is provided a water-based ink that can exhibit high gloss on gloss paper and has excellent fixation while maintaining ink reliability such as recovery from clogging, continuous printing stability, and ink storage stability. The water-based ink comprises at least yellow pigment-containing polymer particles A and pigment-free polymer particles B. The polymer particles A are formed of a water insoluble vinyl polymer produced by polymerizing a specific monomer composition A, and the polymer particles B are formed of a water insoluble vinyl polymer produced by polymerizing a specific monomer composition B and has a minimum film forming temperature of 20° C. or above. The polymer particles B have an average particle diameter of 30 to 60 nm.