US 12,084,586 B2
Ink jet ink composition and recording method
Yuta Asakawa, Azumino (JP)
Assigned to SEIKO EPSON CORPORATION, (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Nov. 4, 2022, as Appl. No. 17/980,932.
Claims priority of application No. 2021-181112 (JP), filed on Nov. 5, 2021.
Prior Publication US 2023/0141725 A1, May 11, 2023
Int. Cl. C09D 11/38 (2014.01); B41J 2/01 (2006.01); C08K 5/053 (2006.01); C08K 5/06 (2006.01); C08K 5/17 (2006.01); C09D 11/108 (2014.01); C09D 11/32 (2014.01)
CPC C09D 11/38 (2013.01) [B41J 2/01 (2013.01); C08K 5/053 (2013.01); C08K 5/06 (2013.01); C08K 5/17 (2013.01); C09D 11/108 (2013.01); C09D 11/32 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A water-based ink jet ink composition which comprises: a colorant; an amine; and a water-soluble low molecular weight organic compound and which is used for recording on a non-absorbing recording medium or a low-absorbing recording medium,
wherein the water-soluble low molecular weight organic compound contains an alkylene glycol monoether (B) represented by general formula (1) having a standard boiling point of 210° C. or less and an alkanediol (A) having a standard boiling point of 210° C. or less at a mass ratio (B/A) of 0.2 to 0.9,
a content of a water-soluble low molecular weight organic compound having a standard boiling point of 250° C. or less is 8 to 30 percent by mass with respect to a total mass of the ink composition,
a water-soluble low molecular weight organic compound which is an alkane polyol having a standard boiling point of more than 250° C. is not contained at a content of more than 3 percent by mass with respect to the total mass of the ink composition, and
a content of the amine with respect to the total mass of the ink composition is 5 percent by mass or less,

OG Complex Work Unit Chemistry
where in the general formula (1), R1 represents an alkylene group having 2 to 5 carbon atoms, R2 represents an alkyl group having 1 or 2 carbon atoms, and n represents 1 or 2.