Production process of inkjet ink composition and inkjet composition
AssigneeFUJIFILM Corporation
InventorsNaonori Makino, Miki Takahashi, Yuuichi Hayata
Life of this patent
Estimating the term…
Abstract
A process for producing an inkjet ink composition is provided and includes dispersion-treating a coloring material in a non-aqueous solvent with a dispersant having no coloring material-dispersing property, the coloring material being covered with a resin insoluble in the non-aqueous solvent. An inkjet ink composition produced by the production process is provided.
Claims7
A process for producing an inkjet ink composition, which comprises dispersing a coloring material in a non-aqueous solvent with a dispersant having no coloring material-dispersing property, the coloring material being covered with a resin insoluble in the non-aqueous solvent, wherein the dispersant is a graft polymer comprising a repeating unit of formula (1) in a main chain of the graft polymer:
- wherein R represents a hydrogen atom or a methyl group;
- X represents a halogen atom, OR1, —COOR1, —CON(R1)(R2) or —OCOR1;
- R1 represents an organic group having a carbon number of 1 to 10;
- and R2 represents a hydrogen atom or an organic group having a carbon number of 1 to 10.
An inkjet ink composition comprising:
- a non-aqueous solvent;
- a coloring material covered with a resin insoluble in the non-aqueous solvent;
- and a dispersant having no coloring material-dispersing property, wherein the dispersant is a graft polymer comprising a repeating unit of formula (1) in a main chain of the graft polymer:
- wherein R represents a hydrogen atom or a methyl group;
- X represents a halogen atom, OR1, —COOR1, —CON(R1)(R2)or —OCOR1;
- R1 represents an organic group having a carbon number of 1 to 10;
- and R2 represents a hydrogen atom or an organic group having a carbon number of 1 to 10.
Dependencies are inferred from the claim text.