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US 8,299,130 B2Granted
Aqueous dispersion; recording liquid, image-forming method, and image-forming apparatus, using the same; and production method of the aqueous dispersion, and inkjet ink obtained from the method
AssigneeFUJIFILM Corporation
InventorsJun Matsumoto, Ryo Saito
Life of this patent
Estimating the term…
Abstract
An aqueous dispersion, having particles of a water-insoluble colorant containing at least one pigment, with the particles being dispersed in a medium containing therein both water and a dispersing agent, wherein the water-insoluble colorant has a crystalline structure, and an average particle diameter of the particles is in the range of from 5 nm to 40 nm, and a monodispersity of the particles is 1.5 or less.
Claims9
An aqueous dispersion, comprising:
- a plurality of particles of a water-insoluble colorant containing at least one pigment, with the particles being dispersed in a medium containing therein both water and a dispersing agent,
- wherein the water-insoluble colorant has a crystalline structure with a crystallite diameter of 20 Å to 400 Å, and an average particle diameter of the particles is in a range of from 5 nm to 40 nm, and a monodispersity of the particles is 1.5 or less.
A recording liquid comprising:
- an aqueous dispersion including a plurality of particles of a water-insoluble colorant containing at least one pigment, with the particles being dispersed in a medium containing therein both water and a dispersing agent;
- wherein the water-insoluble colorant has a crystalline structure with a crystallite diameter of 20 Å to 400 Å, and an average particle diameter of the particles is in a range of from 5 nm to 40 nm, and a monodispersity of the particles is 1.5 or less;
- and
- wherein the water-insoluble colorant is contained in an amount of from 0.1% by mass to 15% by mass of the recording liquid.
1 more element
An image-forming method, comprising:
- forming a recording liquid prepared from an aqueous dispersion including a plurality of particles of a water-insoluble colorant containing at least one pigment, with the particles being dispersed in a medium containing therein both water and a dispersing agent;
- wherein the water-insoluble colorant has a crystalline structure with a crystallite diameter of 20 Å to 400 Å, and an average particle diameter of the particles is in a range of from 5 nm to 40 nm, and a monodispersity of the particles is 1.5 or less;
- and
- wherein the water-insoluble colorant is contained in an amount of from 0.1% by mass to 15% by mass of the recording liquid;
- and
- applying the recording liquid to a medium, thereby recording an image.
3 more elements
An image-forming apparatus, comprising:
- a recording liquid prepared from an aqueous dispersion including a plurality of particles of a water-insoluble colorant containing at least one pigment, with the particles being dispersed in a medium containing therein both water and a dispersing agent;
- wherein the water-insoluble colorant has a crystalline structure with a crystallite diameter of 20 Å to 400 Å, and an average particle diameter of the particles is in a range of from 5 nm to 40 nm, and a monodispersity of the particles is 1.5 or less;
- and
- wherein the water-insoluble colorant is contained in an amount of from 0.1% by mass to 15% by mass of the recording liquid;
- and
- a means for applying the recording liquid to a medium, thereby to record an image.
3 more elements
Dependencies are inferred from the claim text.