Title:
INKJET INK, AND INKJET RECORDING DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/176612
Kind Code:
A1
Abstract:
This inkjet ink contains a quinacridone pigment, a pigment dispersion resin, and a water-soluble organic solvent. The pigment dispersion resin includes an adsorption resin that is adsorbed onto the quinacridone pigment and a non-adsorbed resin that is not adsorbed onto the quinacridone pigment. The non-adsorbed resin accounts for at most 40 mass% of the pigment dispersion resin. The water-soluble organic solvent includes a predetermined water-soluble organic solvent having an octanol/water distribution coefficient LogP of at least 0.00. The content of the predetermined water-soluble organic solvent with respect to the mass of the inkjet ink is 15-40 mass%. The concentration of sulfur in the supernatant fluid obtained by centrifuging the inkjet ink at 1,050,000 G for 3 hours is 0.5-2.0 ppm.
Inventors:
OZAWA NORIAKI (JP)
Application Number:
PCT/JP2023/008732
Publication Date:
September 21, 2023
Filing Date:
March 08, 2023
Export Citation:
Assignee:
KYOCERA DOCUMENT SOLUTIONS INC (JP)
International Classes:
C09D11/326; B41J2/01
Foreign References:
| JP2018039969A | 2018-03-15 | |||
| JP2011042771A | 2011-03-03 | |||
| JP2011052174A | 2011-03-17 | |||
| JP2000273383A | 2000-10-03 | |||
| JP2006206626A | 2006-08-10 | |||
| JP2022188963A | 2022-12-22 |
Attorney, Agent or Firm:
MAEI Hiroyuki (JP)
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