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US 2011/0023749 A1Published application
Colored particles
AssigneeCanon Kabushiki Kaisha
InventorsKazumichi Nakahama, Shoji Koike
Life of this patent
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Abstract
The present invention relates to colored particles containing a dye and a dispersant, wherein the average particle diameter of the colored particles is 10 nm or more, and 80 nm or less, the solubility index represented by Formula (1) of the dye is 9.20 or more, and the dye content and the dispersant content in the colored particles satisfy the relationship represented by Formula (2).
Claims7
Colored particles comprising a dye and a dispersant,
- wherein the average particle diameter of the colored particles is 10 nm or more, and 80 nm or less,
- the solubility index represented by Formula (1), as described below, of the dye relative to water is 9.20 or more relative to any water having a pH of 6.0 to 11.0, and
- the dye content and the dispersant content in the colored particles satisfy the relationship represented by Formula (2), as described below:
- solubility index=log(1/(solubility of dye in water(mol/L)) Formula (1)
- 3/2≦(dye content in colored particles)/(dispersant content in colored particles) Formula (2)
- wherein, the dye content in colored particles and the dispersant content in colored particles are on a mass basis.
3 more elements
A method for manufacturing colored particles containing a dye and a dispersant, the method comprising the steps of:
- emulsifying a mixed solution, in which a first liquid and a dye are mixed, and a second liquid so as to obtain a miniemulsion containing dispersoids;
- and
- removing the first liquid from the dispersoids,
- wherein the solubility index represented by Formula (1), as described below, of the dye relative to water is 9.20 or more relative to any water having a pH of 6.0 to 11.0, and
- the dye content and the dispersant content in the colored particles satisfy the relationship represented by Formula (2), as described below:
- solubility index=log(1/(solubility of dye in water(mol/L)) Formula (1)
- 3/2≦(dye content in colored particles)/(dispersant content in colored particles) Formula (2)
- wherein, the dye content in colored particles and the dispersant content in colored particles are on a mass basis.
5 more elements
Dependencies are inferred from the claim text.