Ink set

Patent metadata

Field	Value
Publication number	US-2020248024-A1
Application number	US-202016776717-A
Country	US
Kind code	A1
Filing date	Jan 30, 2020
Priority date	Jan 31, 2019
Publication date	Aug 6, 2020
Grant date	—

Abstract

An ink set includes a pigment ink, containing a pigment, and a dye ink containing the compound represented by formula (y-1) below or a salt thereof.

First claim

What is claimed is:

1 . An ink set comprising:
a pigment ink, containing a pigment; and a dye ink containing a compound represented by formula (y-1) below or a salt thereof.

2 . The ink set according to claim 1 , wherein
a percentage of the compound represented by formula (y-1) above or salt thereof in the dye ink is 60.0% by mass or more and 90.0% by mass or less of a total amount of dyes in the dye ink.

3 . The ink set according to claim 1 , wherein
the dye ink further contains a compound represented by formula (y-2) below or a salt thereof.

4 . The ink set according to claim 1 , wherein
the dye ink further contains a compound represented by formula (y-3) below or a salt thereof.

5 . The ink set according to claim 1 , wherein
the dye ink further contains a compound represented by formula (y-4) below or a salt thereof.

6 . The ink set according to claim 1 , wherein
the dye ink further contains C.I. Direct Yellow 86.

7 . The ink set according to claim 1 , wherein
the dye ink further contains C.I. Direct Yellow 132.

8 . The ink set according to claim 1 , wherein
the dye ink contains an organic solvent having an sp of 12.5 or less in an amount of 5.0% by mass or more.

9 . The ink set according to claim 1 , further comprising:
a cyan ink containing one or two or more selected from:
a compound represented by formula (c-1) below or a salt thereof;

a compound represented by formula (c-2) below or a salt thereof;

a compound represented by formula (c-3) below or a salt thereof,

 where 0≤b≤4, 0≤c≤4, and 1≤(b+c)≤4, where b+c represents an integer; and rings A 1 , A 2 , and A 3 are each selected from a benzene ring, a 2,3-pyridine ring, and a 3,2-pyridine ring, with at least one of rings A 1 , A 2 , and A 3 being a 2,3-pyridine ring or 3,2-pyridine ring, and rings A 1 , A 2 , and A 3 may be the same or different;
a compound represented by formula (c-4) below or a salt thereof;

a compound represented by formula (c-5) below or a salt thereof,

 where rings A 1 , A 2 , and A 3 are each selected from a benzene ring, a 2,3-pyridine ring, and a 3,2-pyridine ring, with at least one of rings A 1 , A 2 , and A 3 being a 2,3-pyridine ring or 3,2-pyridine ring, and rings A 1 , A 2 , and A 3 may be the same or different; 1.0≤a≤3.0, 0.2≤b≤1.8, 0.8≤c≤1.6, and 0≤a+b+c≤4; 1≥x≤3, where x is an integer; and R 1 is a C1 to C6 linear alkylene group;
a compound represented by formula (c-6) below or a salt thereof,

 where rings A, B, C, and D are each independently an aromatic six-membered ring, with at least one of rings A, B, C, and D being a pyridine ring or pyrazine ring; E is an alkylene group; X is a sulfo-substituted anilino group, carboxy-substituted anilino group, or phosphono-substituted anilino group, and the substituted anilino group may further have one to four substituents selected from the group consisting of a sulfonic acid group, a carboxy group, a phosphono group, a sulfamoyl group, a carbamoyl group, a hydroxy group, an alkoxy group, an amino group, an alkylamino group, a dialkylamino group, an arylamino group, a diarylamino group, an acetylamino group, a ureido group, an alkyl group, a nitro group, a cyano group, a halogen, an alkylsulfonyl group, and an alkylthio group; Y is a hydroxy group or amino group; and 0.0≤a≤2.0, 0.0≤b≤3.0, 0.1≤c≤3.0, and 1.0≤a+b+c≤4.0;
a compound represented by formula (c-7) below or a salt thereof,

 where rings A, B, C, and D each independently represent a benzene ring or nitrogen-containing heteroaromatic ring, with more than 0.0 and 3.0 or less of the four being a nitrogen-containing heteroaromatic ring or rings and rest being a benzene ring or rings; R 1 represents an alkyl group, R 2 represents an alkylene group, and X represents an anilino group having one or more sulfonic acid groups; X may further have a substituent selected from the group consisting of a carboxy group, a phosphoric acid group, a hydroxy group, an alkoxy group, an alkylcarbonylamino group, a ureido group, a nitro group, and a halogen atom; 0.0<m<3.9, 0.1≤n<4.0, and 1.0≤(m+n)<4.0;
a compound represented by formula (c-8) below or a salt thereof,

 where R 1 to R 24 each independently represent a hydrogen atom, a halogen atom, an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, an aryl group, an aralkyl group, an acyl group, an acylamino group, a sulfonylamino group, an alkoxy group, an aryloxy group, a hydroxy group, an amino group, a nitro group, a cyano group, a sulfonic acid group, a carboxylic acid group, a sulfamoyl group, a carbamoyl group, an alkoxysulfonyl group, an alkoxycarbonyl group, an aryloxysulfonyl group, or an aryloxycarbonyl group and satisfy at least one of the following (X) and (Y): (X) at least one of R 1 to R 24 is a sulfonic acid group or carboxylic acid group; (Y) at least one of R 6 , R 7 , R 8 , R 9 , R 16 , R 17 , R 18 , and R 19 is a halogen atom, acyl group, nitro group, or cyano group;
a compound represented by formula (c-9) below or a salt thereof,

 where R 1 , R 2 , R 3 , and R 4 each independently represent an alkyl group, a cycloalkyl group, an alkenyl group, an aralkyl group, an aryl group, or a heterocyclic group, with at least one of R 1 , R 2 , R 3 , and R 4 substituted with an ionic group; and w, x, y, and z each independently represent 1 or 2; and
C.I. Direct Blue 199; and

a magenta ink containing one or two or more selected from:
a compound represented by formula (m-1) below or a salt thereof;

a compound represented by formula (m-2) below or a salt thereof;

a compound represented by formula (m-3) below or a salt thereof;

 where R 1 , R 5 , R 6 , and R 10 each independently represent an

Assignees

• Seiko Epson Corp

Inventors

• Hama Shintaro
• Aruga Tomohiro
• Kumamoto Kiyomi
• Mizutaki Yusuke

Classifications

• C09D11/40 Primary

  Ink-sets specially adapted for multi-colour inkjet printing · CPC title

• C09B67/0055

  Mixtures of two or more disazo dyes · CPC title

• C09B67/0035

  Mixtures of phthalocyanines · CPC title

• C09B67/0033

  Blends of pigments; Mixtured crystals; Solid solutions · CPC title

• C09D11/322

  Pigment inks · CPC title