Preparation process of pigment dispersion, image forming process and image forming apparatus
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United States of America Patent
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Jul 13, 2010
Grant Date -
May 31, 2007
app pub date -
Feb 1, 2007
filing date -
Feb 28, 2006
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process for preparing a pigment dispersion, which comprises mixing a first solvent composed of an organic solvent in which a pigment has been dissolved with a second solvent which lowers the solubility of the pigment in the presence of a dispersant, thereby precipitating and dispersing particles of the pigment in a mixed solvent, wherein a pigment derivative to which a hydrophobic substituent having affinity for the first solvent has been bonded is used as the pigment.
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