US 12,281,232 B2
Treatment liquid 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. 17/980,964.
Claims priority of application No. 2021-180991 (JP), filed on Nov. 5, 2021.
Prior Publication US 2023/0145299 A1, May 11, 2023
Int. Cl. B41J 2/175 (2006.01); B41J 11/00 (2006.01); B41M 7/00 (2006.01); C09D 11/54 (2014.01)
CPC C09D 11/54 (2013.01) [B41M 7/0018 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A treatment liquid which is a water-based treatment liquid and which is used for a recording method of adhering a water-based ink jet ink composition containing a colorant and the treatment liquid to a recording medium, the treatment liquid containing:
an organic acid; and
at least one selected from an organic acid polyvalent metal salt and a cationic polymer,
wherein a content of the organic acid is 5.0 percent by mass or less with respect to a total mass of the treatment liquid,
a content of the at least one selected from an organic acid polyvalent metal salt and a cationic polymer is 1 to 15 percent by mass with respect to the total mass of the treatment liquid, and
the treatment liquid has a pH of 5.5 or more.