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Title:
PROCESSED PIGMENT, PIGMENT DISPERSED COMPOSITION, COLORED PHOTOSENSITIVE COMPOSITION, COLOR FILTER AND METHOD OF MANUFACTURING COLOR FILTER
Document Type and Number:
Japanese Patent JP2009108271
Kind Code:
A
Abstract:

To provide a processed pigment which is fine and excellent in dispersibility and dispersion stability.

The processed pigment is obtained by mechanically kneading an organic pigment containing Pigment Red 254 in which the ratio (A296)/(A480) of absorbance at 296 nm (A296) to absorbance at 480 nm (A480) of 0.0025 mass% N-methylpyrrolidone solution is 0.80-1.50, a water-soluble inorganic salt, and a water-soluble organic solvent which does not substantially dissolve the water-soluble inorganic salt, and then removing the water-soluble inorganic salt and the water-soluble organic solvent.


Inventors:
Sugihara, Koichi
Fujimaki, Kazuhiro
Application Number:
JP2007000284528
Publication Date:
May 21, 2009
Filing Date:
October 31, 2007
Export Citation:
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Assignee:
FUJIFILM CORP
International Classes:
C09B67/22; C09B67/10; C09B67/20; G02B5/20; C09B57/00