Title:
DYEING DENSITY IMPROVING METHOD USING PRINTING INK CONTAINING WATER-SOLUBLE AZO COMPOUND OR SALT THEREOF
Document Type and Number:
Japanese Patent JP2019002109
Kind Code:
A
Abstract:
To obtain printed matter of high concentrations with excellent color development and reduced ink amounts.SOLUTION: The present invention provides a dyeing density improving method using a printing ink containing a water-soluble azo compound which is a water-soluble yellow dye represented by the formula (1), or a salt thereof or a mixture of them, water, and a water-soluble organic solvent (where x is an integer of 2-4, A is a halogen atom).SELECTED DRAWING: None
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Inventors:
NAGATSUKA YUKA
NAGATSUKA SHINYA
NAGATSUKA SHINYA
Application Number:
JP2017120259A
Publication Date:
January 10, 2019
Filing Date:
June 20, 2017
Export Citation:
Assignee:
NIPPON KAYAKU KK
International Classes:
D06P1/06; B41J2/01; C09B62/09; C09D11/328