PRINTING INK COMPOSITION

• US 20160075879A1
• Filed: 09/15/2015
• Published: 03/17/2016
• Est. Priority Date: 09/16/2014
• Status: Active Grant

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Ikeda, Yasunari, Ito, Akio
• Granted Patent: US 9,828,507 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: C09B 1/16 Amino-anthraquinones C09B1/007 takes precedence
• CPC Class Codes: C09B 29/0037 containing a five-membered heterocyclic ring with two nitrogen atoms
• CPC Class Codes: C09B 29/0048 containing a six-membered heterocyclic ring with one nitrogen atom
• CPC Class Codes: C09B 29/16 Naphthol-sulfonic acids
• CPC Class Codes: C09B 56/005 Azo-nitro dyes
• CPC Class Codes: C09B 67/0033 Blends of pigments; Mixtured crystals; Solid solutions
• CPC Class Codes: C09D 11/328 characterised by dyes
• CPC Class Codes: C09D 11/38 characterised by non-macromolecular additives other than solvents, pigments or dyes

Abstract

A printing ink composition includes a disperse dye, a surfactant, a water soluble dye, and a dispersant, in which an IOB value A of the disperse dye, an IOB value B of the surfactant, and an IOB value C of the water soluble dye satisfy the following Equation (1), A<B<C (1), and the IOB value B is 1.0 to 2.0.

Claims

1. A printing ink composition comprising:

a disperse dye;

a surfactant;

a water soluble dye; and

a dispersant, and

wherein an IOB value A of the disperse dye, an IOB value B of the surfactant, and an IOB value C of the water soluble dye satisfy the following Equation (1),

A<

B<

C  

 

(1), and

the IOB value B is 1.0 to 2.0.

2. The printing ink composition according to claim 1,

wherein the surfactant includes two or more types of surfactants, and

a difference between the maximum IOB value B1 and the minimum IOB value B2 of the IOB values B which the two or more types of surfactants have is 0.10 to 1.0.

3. The printing ink composition according to claim 1,

wherein a difference between the IOB value B and the IOB value A is at least 1.0 or less.

4. The printing ink composition according to claim 1,

wherein the dispersant includes at least any one of a formalin condensate of a lignin sulfonic acid and a formalin condensate of a naphthalene sulfonic acid compound.

5. The printing ink composition according to claim 1,

wherein the surfactant includes a nonionic surfactant.