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.

Date of Patent:
Oct. 01, 2013

Filed:

Aug. 24, 2010
Applicant:

Ryo Saito, Kanagawa, JP;

Inventor:

Ryo Saito, Kanagawa, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/01 (2006.01);
U.S. Cl.
CPC ...
Abstract

An ink composition includes a wetting agent and water-insoluble polymer particles including a colorant and a water-insoluble polymer, wherein the content of free polymer derived from the water-insoluble polymer is 1.0% by mass or less with respect to the total mass of the ink composition, and the wetting agent is at least one selected from the group consisting of urea, a urea derivative, a pyrrolidone derivative, an alkyl glycine represented by the following Formula I, glycyl betaine and a sugar: (Formula I) RRNCHCOOM wherein in Formula I, Rand Reach independently represent a linear or branched alkyl group having 1 to 5 carbon atoms, and M represents a hydrogen atom, an alkali metal atom or an alkaline earth metal atom.


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