US 11,787,961 B2
Ink jet process and recording
Chigusa Sato, Shiojiri (JP)
Assigned to SEIKO EPSON CORPORATION
Filed by Seiko Epson Corporation, Toyko (JP)
Filed on May 25, 2021, as Appl. No. 17/329,281.
Claims priority of application No. 2020-091102 (JP), filed on May 26, 2020.
Prior Publication US 2021/0371685 A1, Dec. 2, 2021
Int. Cl. C09D 11/107 (2014.01); B41J 11/00 (2006.01); B41M 5/00 (2006.01); C09D 11/322 (2014.01); C09D 11/101 (2014.01)
CPC C09D 11/107 (2013.01) [B41J 11/002 (2013.01); B41M 5/0023 (2013.01); C09D 11/322 (2013.01); C09D 11/101 (2013.01)] 6 Claims
 
1. An ink jet process comprising:
an ejection step, in which a radiation-curable ink jet composition is ejected from an ink jet head to a recording medium; and
a curing step, in which the ejected ink jet composition is irradiated with radiation to give a cured coating of the ink jet composition, wherein:
the ink jet composition contains at least one polymerizable compound, at least one photopolymerization initiator, and C.I. Pigment Red 57:1;
the C.I. Pigment Red 57:1 constitutes 4.0% by mass or more of a total amount of the ink jet composition;
the at least one polymerizable compound includes (2-methyl-2-ethyl-1,3-dioxolan-4-yl)methyl acrylate; and
the cured coating has a maximum thickness of 5 μm or less.