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US 2024/0316975 A1Published application
Thermosensitive recording material
OwnerHajime SAITO, Yasuo MORI +7inventors
InventorsHajime SAITO, Yasuo MORI, Mayumi YASUMOTO, Kenta ICHIMURA, Masashige SUGIMOTO, Tatsuro KOSHI, Yoshimi MIDORIKAWA, Masaya TOSAKA, Kenji HIRAI
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Abstract
A thermosensitive recording material including a support and a thermosensitive coloring layer provided on the support, in which the thermosensitive coloring layer contains (A) a coloring substance, (B) a kraft lignin in which a content of dimethyl disulfide is 2.5 ppm or less and (C) a specific developer.
Claims19
A thermosensitive recording material comprising:
- a support;
- and
- a thermosensitive coloring layer provided on the support,
- wherein the thermosensitive coloring layer contains (A) a coloring substance, (B) a kraft lignin in which a content of dimethyl disulfide is 2.5 ppm or less, and (C) at least one developer of a compound of the following (C-1) group, a compound of the following (C-2) group and a compound of the following (C-3) group,
- (C-1) group:
- a compound represented by the following general formula (I) having a sulfonylurea group
- (C-2) group:
- a compound represented by the following general formula (II) having a sulfonylamide group (a compound represented by the following structural formula (V) is excluded), and
- (C-3) group:
- 4,4′-dihydroxydiphenyl sulfone, 2,4′-dihydroxydiphenylsulfone, bis(3-allyl-4-hydroxyphenyl)sulfone, 4-hydroxy-4′-isoproxydiphenyl sulfone, 4-hydroxy-4′-allyloxydiphenylsulfone and 4-benzyloxy-4′-hydroxydiphenylsulfone
- [where R1 and R2 represent a halogen atom, an alkyl group having 1 to 4 carbon atoms, an alkenyl group having 2 to 4 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, n1 and n2 represent an integer of 0 to 3, and, in a case where a plurality of R1's and a plurality of R2's are present, R1's and R2's may be the same as or different from each other]
- [where X1 and X2 each independently represent —O— or —NH—, R3 represents a hydrogen atom or —SO2—R4, R4 represents a substituted or unsubstituted alkyl group, aralkyl group or aryl group, R5 and R6 each independently represent a hydrogen atom or an alkyl group, n3 represents 0 or 1, n4 represents an integer of 0 to 2, and, in a case where a plurality of R3's is present, R3's may be the same as or different from each other]
9 more elements
Dependencies are inferred from the claim text.