US 12,331,207 B2
Ink jet recording ink and ink jet recording method
Hiromichi Numazawa, Kanagawa (JP); Daisuke Sasaki, Kanagawa (JP); and Yusuke Sakai, Kanagawa (JP)
Assigned to FUJIFILM Corporation, Tokyo (JP)
Filed by FUJIFILM Corporation, Tokyo (JP)
Filed on Feb. 12, 2023, as Appl. No. 18/167,880.
Application 18/167,880 is a continuation of application No. PCT/JP2021/025956, filed on Jul. 9, 2021.
Claims priority of application No. 2020-153118 (JP), filed on Sep. 11, 2020.
Prior Publication US 2023/0203330 A1, Jun. 29, 2023
Int. Cl. C09D 11/328 (2014.01); B41J 2/01 (2006.01); B41J 2/21 (2006.01); B41J 11/00 (2006.01); C09B 57/00 (2006.01); C09D 11/037 (2014.01); C09D 11/101 (2014.01); C09D 11/107 (2014.01); C09D 11/322 (2014.01); C09D 11/326 (2014.01); C09D 11/38 (2014.01)
CPC C09D 11/328 (2013.01) [B41J 2/01 (2013.01); B41J 2/2107 (2013.01); B41J 11/0021 (2021.01); C09B 57/007 (2013.01); C09D 11/037 (2013.01); C09D 11/101 (2013.01); C09D 11/107 (2013.01); C09D 11/322 (2013.01); C09D 11/326 (2013.01); C09D 11/38 (2013.01)] 10 Claims
 
1. An ink jet recording ink comprising:
a near-infrared absorbing colorant represented by Formula 2;
a polymerizable monomer, wherein the polymerizable monomer is a compound having an ethylenically unsaturated group and a molecular weight of less than 1,000;
a polymerization initiator; and
a dispersant, having a basic functional group or an acidic functional group,
wherein a content of the polymerizable monomer is 50% by mass or more with respect to a total amount of the ink jet recording ink, and
a difference between an SP value of the polymerizable monomer and an SP value of the dispersant is 3.8 MPa1/2 to 16.0 MPa1/2,

OG Complex Work Unit Chemistry
in Formula 2, R1 and R2 each independently represent an aryl group,
R3 and R4 each independently represent a hydrogen atom or an alkyl group,
X1 and X2 each independently represent an oxygen atom or —N(R5)—,
R5 represents a hydrogen atom, an alkyl group, an aryl group, or a heteroaryl group,
X3 and X4 each independently represent a carbon atom or a boron atom,
t and u each represent 1 in a case where X3 and X4 represent a boron atom, and each represent 2 in a case where X3 and X4 represent a carbon atom,
p, q, r and s are 0, and Y1, Y2, Y3, and Y4 are absent.