US 12,351,721 B2
Ink jet recording method
Emi Takeuchi, Shiojiri (JP)
Assigned to SEIKO EPSON CORPORATION, (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Dec. 1, 2022, as Appl. No. 18/072,972.
Claims priority of application No. 2021-195911 (JP), filed on Dec. 2, 2021.
Prior Publication US 2023/0174803 A1, Jun. 8, 2023
Int. Cl. C09D 11/32 (2014.01); B41M 7/00 (2006.01); C09D 11/38 (2014.01)
CPC C09D 11/32 (2013.01) [B41M 7/0081 (2013.01); C09D 11/38 (2013.01)] 5 Claims
 
1. An ink jet recording method comprising:
ejecting a radiation curable ink jet composition on a recording medium; and
emitting radiation rays to the recording medium,
wherein the ink jet composition contains a colorant and a thioxanthone-based photopolymerization initiator,
the colorant includes neither a yellow-based colorant nor a black-based colorant,
the thioxanthone-based photopolymerization initiator includes at least one selected from the group consisting of a diethylthioxanthone, an isopropylthioxanthone, and a chlorothioxanthone, and
emission energy of the radiation rays is set to 900 mJ/cm2 or more per one emission,
wherein the radiation curable ink jet composition includes a polymerization inhibitor, and
the polymerization inhibitor includes at least one or more of cresol, t-butylcatechol, 3,5-di-t-butyl-4-hydroxytoluene, 2,2′-methylenebis(4-methyl-6-t-butylphenol), 2,2″-methylenebis(4-ethyl-6-butylphenol), 4,4′-thiobis(3-methyl-6-t-butylphenol), and a hindered amine compound.