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US 7,621,993 B2Granted
Method for producing pigment dispersion and pigment dispersion producing apparatus
AssigneeCanon Kabushiki Kaisha
InventorsTakayuki Teshima, Shoji Ihara, Kenji Yamada, Yukio Hanyu
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Abstract
A method for producing a pigment dispersion, including the steps of: preparing a fluid in a supercritical or subcritical state in which a pigment is dissolved; and introducing into a microreactor the fluid in a supercritical or subcritical state in which the pigment is dissolved and a solution containing a dispersant for dispersing the pigment in a dispersing medium, precipitating the pigment in the microreactor, and dispersing the precipitated pigment in the dispersing medium using the dispersant.
Claims11
A method for producing a pigment dispersion, comprising the steps of:
- preparing a first fluid in a supercritical or subcritical state in which a pigment is dissolved;
- preparing a second fluid containing a dispersant for dispersing the pigment in a dispersing medium;
- introducing the first fluid and the second fluid into a microreactor to contact these fluids to form a laminar flow;
- and
- transporting the contacted fluids in the microreactor to precipitate the pigment and to disperse the pigment with the dispersant in the dispersing medium.
2 more elements
Dependencies are inferred from the claim text.