Title:
WATER-BASED PIGMENT INK, PRINTED MATTER, AND METHOD FOR MANUFACTURING PRINTED MATTER
Document Type and Number:
WIPO Patent Application WO/2022/209931
Kind Code:
A1
Abstract:
The problem to be solved by the present invention is to provide a water-based pigment ink that makes it possible to adjust easily the viscosity of the water-based pigment ink to the optimum value for an ink ejection head without impairing the storage stability of the ink, excels in ejection stability when printed by an inkjet printing method and dries quickly on the surface of a recording medium after printing. The present inventors solved the problem by a water-based pigment ink including an acrylic thickener, a high-boiling solvent, water, a pigment, and a binder, the water-based pigment ink being characterized in that the mass ratio of the solid content to the total amount of the water-based pigment ink is 1-15% by mass and the mass ratio of the high-boiling point solvent to the total amount of the water-based pigment ink is 0.1-35% by mass.
Inventors:
ICHIKAWA RYOUTA (JP)
NIO TAKAHIRO (JP)
NIO TAKAHIRO (JP)
Application Number:
PCT/JP2022/012138
Publication Date:
October 06, 2022
Filing Date:
March 17, 2022
Export Citation:
Assignee:
DAINIPPON INK & CHEMICALS (JP)
International Classes:
B41J2/01; B41M5/00; C09D11/38
Domestic Patent References:
| WO2020218612A1 | 2020-10-29 | |||
| WO2019013337A1 | 2019-01-17 | |||
| WO2018190139A1 | 2018-10-18 |
Foreign References:
| DE202020107342U1 | 2021-02-09 | |||
| JP2001192598A | 2001-07-17 | |||
| JP2019162840A | 2019-09-26 | |||
| EP3239254A1 | 2017-11-01 | |||
| JP2020063341A | 2020-04-23 | |||
| JP2011012226A | 2011-01-20 |
Attorney, Agent or Firm:
OGAWA Shinji (JP)
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