Printing ink composition

Patent metadata

Field	Value
Publication number	US-9828507-B2
Application number	US-201514854368-A
Country	US
Kind code	B2
Filing date	Sep 15, 2015
Priority date	Sep 16, 2014
Publication date	Nov 28, 2017
Grant date	Nov 28, 2017

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.

First claim

What is claimed is:

1. A printing ink composition comprising:
a disperse dye;
a surfactant;
a water soluble dye; and
a dispersant,
wherein the dispersant includes a formalin condensate of a lignin sulfonic acid,
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 surfactant includes a nonionic surfactant.

Assignees

• Seiko Epson Corp

Inventors

• Ikeda Yasunari
• Ito Akio

Classifications

• C09D11/328 Primary

  characterised by dyes · CPC title

• C09D11/38

  characterised by non-macromolecular additives other than solvents, pigments or dyes · CPC title

• C09B29/0048

  containing a six-membered heterocyclic ring with one nitrogen atom · CPC title

• C09B56/005 Primary

  Azo-nitro dyes · CPC title

• C09B1/16

  Amino-anthraquinones {(C09B1/007 takes precedence)} · CPC title