Title:
PIGMENT DISPERSION, INKJET INK COMPOSITION AND INK SET OBTAINED USING SAID PIGMENT DISPERSION, AND IMAGE FORMED USING SAID INKJET INK COMPOSITION, AND METHOD FOR FORMING SAID IMAGE
Document Type and Number:
WIPO Patent Application WO/2020/066468
Kind Code:
A1
Abstract:
Provided are: a pigment dispersion which, through use thereof in an ink, can adequately increase the color density of a formed image part; an inkjet ink composition and an ink set obtained using the dispersion; and an image formed using the inkjet ink composition, and an image formation method. This pigment dispersion contains an aqueous medium, a pigment, and a pigment dispersant comprising a polymer having an anionic group, the pKa (DMSO) of the polymer before neutralization of the pigment dispersant being 14 or greater. The inkjet ink composition and the ink set use the pigment dispersion. The image is formed and the image formation method forms an image using the inkjet ink composition.
Inventors:
KATAOKA SHOHEI (JP)
Application Number:
PCT/JP2019/034322
Publication Date:
April 02, 2020
Filing Date:
September 02, 2019
Export Citation:
Assignee:
FUJIFILM CORP (JP)
International Classes:
C09D11/326; B41J2/01; B41M5/00; C09C1/36; C09C3/10; C09D11/54; C09D17/00
Foreign References:
| US20130164681A1 | 2013-06-27 | |||
| US20040006156A1 | 2004-01-08 | |||
| JP2020004095A | 2020-01-09 | |||
| JP2006249301A | 2006-09-21 | |||
| JP2014177613A | 2014-09-25 | |||
| JP2016117240A | 2016-06-30 |
Attorney, Agent or Firm:
NAKASHIMA Junko et al. (JP)
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