Ink set and thermal transfer recording sheet

Patent metadata

Field	Value
Publication number	US-9701146-B2
Application number	US-201615130695-A
Country	US
Kind code	B2
Filing date	Apr 15, 2016
Priority date	Apr 17, 2015
Publication date	Jul 11, 2017
Grant date	Jul 11, 2017

Abstract

An ink set contains a first ink containing a compound in which a pyrazolone ring and a thiazole ring are bonded and a second ink containing a compound in which a pyrazolone ring and a pyridinedione ring are bonded. A thermal transfer recording sheet has a first ink layer containing a compound in which a pyrazolone ring and a thiazole ring are bonded and a second ink layer containing a compound in which a pyrazolone ring and a pyridinedione ring are bonded.

First claim

What is claimed is:

1. An ink set separately comprising:
a first ink containing a compound represented by General Formula (1) shown below; and
a second ink containing a compound represented by General Formula (2) shown below,

wherein, in General Formula (1),
R 1 represents an alkyl group, an unsubstituted aryl group, an aryl group having a substituent, an acyl group, a carboxy group, an alkoxycarbonyl group, a carboxamide group, an amino group, an alkoxy group, or a cyano group,
R 2 represents an alkyl group, an unsubstituted aryl group, or an aryl group having a substituent,
R 3 represents an alkyl group, an unsubstituted aryl group, an aryl group having a substituent, or a heterocyclic group,
R 4 and R 5 each independently represent an alkyl group, and
when R 1 to R 3 are the aryl groups having a substituent, the substituent is an alkyl group, an alkoxy group, or a sulfonic acid salt group,

wherein, in General Formula (2),
R 6 and R 7 each independently represent an alkyl group,
R 8 represents a hydrogen atom, an alkyl group, an unsubstituted aryl group, or an aryl group having a substituent,
R 9 represents an alkyl group, an unsubstituted aryl group, or an aryl group having a substituent,
R 10 represents a hydrogen atom, an alkyl group, an unsubstituted aryl group, an aryl group having a substituent,
or —N(—R 11 )R 12 , wherein R 11 and R 12 each independently represent a hydrogen atom, an alkyl group, or an acyl group and R 11 and R 12 may be bonded to form a ring, and
when R 8 to R 10 are the aryl groups having a substituent, the substituent is an alkyl group or an alkoxy group.

2. The ink set according to claim 1 , wherein R 1 in General Formula (1) above is an alkyl group, an aryl group, an acyl group, or a carboxy group.

3. The ink set according to claim 1 , wherein at least either the first ink or the second ink further contains a compound selected from the group consisting of compounds represented by General Formulae (3) to (13) shown below,

wherein, in General Formula (3),
either R 13 or R 14 represents an alkyl group and the other one represents a hydrogen atom or an alkyl group,
R 15 represents an alkyl group, an unsubstituted aryl group, an aryl group having a substituent, or an amino group,
R 16 represents a hydrogen atom, a cyano group, a carbamoyl group, an alkoxycarbonyl group, or a carboxamide group,
R 17 represents a hydrogen atom, an alkyl group, an unsubstituted aryl group, an aryl group having a substituent, or —N(—R 18 )R 19 , wherein and R 18 and R 19 each independently represent a hydrogen atom, an alkyl group, or an acyl group and R 18 and R 19 may be bonded to each other to form a ring, when R 15 and R 17 are the aryl groups having a substituent, the substituent is an alkyl group,
X represents a carbonyl group or a sulfonyl group, and
n represents an integer of 1 to 3,

wherein, in General Formula (4), R 20 to R 23 each independently represent an alkyl group, an unsubstituted aryl group, or an aryl group having a substituent, and when R 20 to R 23 are the aryl groups having a substituent, the substituent is an alkyl group or an alkoxy group,

wherein, in General Formula (5), R 24 and R 25 each independently represent an alkyl group, an unsubstituted aryl group, or an aryl group having a substituent, and when R 24 and R 25 are the aryl groups having a substituent, the substituent is an alkyl group,

wherein, in General Formula (6), R 26 and R 27 each independently represent an alkyl group, an unsubstituted aryl group, or an aryl group having a substituent, and when R 26 and R 27 are the aryl groups having a substituent, the substituent is an alkoxy group,

wherein, in General Formula (7), R 28 to R 32 each independently represent an alkyl group, an unsubstituted aryl group, or an aryl group having a substituent, and when R 28 to R 32 are the aryl groups having a substituent, the substituent is an alkyl group or an alkoxy group,

wherein, in General Formula (8), R 33 to R 36 each independently represent an alkyl group, an unsubstituted aryl group, or an aryl group having a substituent, and when R 33 to R 36 are the aryl groups having a substituent, the substituent is an alkyl group,

wherein, in General Formula (9), R 37 represents an alkyl group, an unsubstituted aryl group, an aryl group having a substituent, or —(R 52 —O)n-R 53 , wherein R 52 is an alkylene, R 53 is an alkyl group, and n is 1 or 2, and, when R 37 is the aryl group having a substituent, the substituent is an alkyl group or an alkoxy group,

wherein, in General Formula (10), R 38 to R 42 each independently represent an alkyl group, an unsubstituted aryl group, or an aryl group having a substituent, and when R 38 to R 42 are the aryl groups having a substituent, the substituent is an alkyl group,

wherein, in General Formula (11), R 43 and R 44 each independently represent an alkyl group, an unsubstituted aryl group, or an aryl group having a substituent, and when R 43 and R 44 are the aryl groups having a substituent, the substituent is an alkyl group,

wherein, in General Formula (12), R 45 to R 49 each independently represent an alkyl group, an unsubstituted aryl group, or an aryl group having a substituent, and when R 45 to R 49 are the aryl groups having a substituent, the substituent is an alkyl group,

wherein, in General Formula (13), R 50 and R 51 each independently represent an alkyl group, an unsubstituted aryl group, or an aryl group having a substituent, and when R 50 and R 51 are the aryl groups having a substituent, the substituent is an alkyl group.

4. A thermal transfer recording sheet, comprising:
a first ink layer containing a compound represented by General Formula (1) shown below; and
a second ink layer containing a compound represented by General Formula (2),

wherein, in General Formula (1),
R 1 represents an alkyl group, an unsubstituted aryl group, an aryl group having a substituent, an acyl group, a carboxy group, an alkoxycarbonyl group, a carboxamide group, an amino group, an alkoxy group, or a cyano group,
R 2 represents an alkyl group, an

Assignees

• Canon Kk

Inventors

• Shirota Koromo
• Shintou Taichi
• Nakano Masao

Classifications

• C09B23/04

  one >CH- group, e.g. cyanines, isocyanines, pseudocyanines · CPC title

• C09D11/30

  Inkjet printing inks · CPC title

• C09B25/00

  Quinophthalones · CPC title

• C09B29/363

  from diazotized amino carbocyclic rings · CPC title

• C09B23/0075

  the polymethine chain being part of an heterocyclic ring · CPC title