	US 12,152,154 B2
	Coating composition for applying inkjet printing thereto to form marked preparation, preparation marked with aqueous ink, and method for producing marked preparation
Aya Kobayashi, Yokohama (JP); and Takafumi Hoshino, Yokohama (JP)
Assigned to Shin-Etsu Chemical Co., Ltd., Tokyo (JP)
Filed by Shin-Etsu Chemical Co., Ltd., Tokyo (JP)
Filed on May 29, 2020, as Appl. No. 16/888,220.
Claims priority of application No. 2019-106514 (JP), filed on Jun. 6, 2019.
Prior Publication US 2020/0385597 A1, Dec. 10, 2020
Int. Cl. C09D 11/54 (2014.01); B41J 3/407 (2006.01); B41M 5/00 (2006.01); C09D 5/16 (2006.01); C09D 11/033 (2014.01); C09D 11/106 (2014.01); C09D 11/14 (2006.01); C09D 11/30 (2014.01); C09D 101/02 (2006.01); C09D 101/26 (2006.01)

CPC C09D 101/26 (2013.01) [B41J 3/4073 (2013.01); B41M 5/0017 (2013.01); C09D 5/1668 (2013.01); C09D 11/033 (2013.01); C09D 11/106 (2013.01); C09D 11/14 (2013.01); C09D 11/30 (2013.01); C09D 11/54 (2013.01); C09D 101/02 (2013.01)]

9 Claims

1. A method for producing a tablet marked with aqueous ink, comprising:

a coating step of coating an object with a composition comprising

a water-soluble cellulose ether having a viscosity at 20° C. of from 2.0 to 50.0 mPa·s, as determined in a 2% by mass aqueous solution thereof,

polyvinyl alcohol, and

a solvent,

wherein a mass ratio of the water-soluble cellulose ether to the polyvinyl alcohol is from 99.0:1.0 to 55.0:45.0,

to form a coating layer on the object; and

a printing step of inkjet-printing on the coating layer with the aqueous ink to obtain the tablet marked with the aqueous ink.