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:
Jun. 10, 2008
Filed:
Sep. 01, 2004
Hidehiko Komatsu, Nagano, JP;
Masahiro Yatake, Nagano, JP;
Kazuhiko Hara, Nagano, JP;
Masaaki Itano, Nagano, JP;
Jun Ito, Nagano, JP;
Motoki Masuda, Nagano, JP;
Hidehiko Komatsu, Nagano, JP;
Masahiro Yatake, Nagano, JP;
Kazuhiko Hara, Nagano, JP;
Masaaki Itano, Nagano, JP;
Jun Ito, Nagano, JP;
Motoki Masuda, Nagano, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
The present invention provides an aqueous ink containing a dispersion in which a colorant is encapsulated with a polymer to make it dispersible in water, wherein the polymer has aromatic rings in an amount of from 20% by weight to 70% by weight based on the weight of the polymer, and further, the ink contains a compound represented by the following formula: wherein R represents a bivalent organic group, PO represents a propyleneoxy group, EO represents an ethyleneoxy group, x, y, a and b are each the number of repeating units, x represents a number of 1 to 200, y represents a number of 1 to 50, a represents a number of 1 to 30, and b represents a number of 0 to 20.