Pigment dispersion and ink composition and ink set both containing the same
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United States of America Patent
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Apr 28, 2009
Grant Date -
Oct 13, 2005
app pub date -
Apr 12, 2004
filing date -
Apr 11, 2003
priority date (Note) -
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Abstract
It is an object of the present invention to provide a pigment dispersion, an ink composition, and an ink set, enabling excellent glossiness, bronzing prevention, and ink composition storage stability to be realized. The present invention provides a pigment dispersion characterized by comprising at least a pigment, an aqueous medium, a copolymer resin between a hydrophobic monomer and a hydrophilic monomer, and a urethane resin, and also an ink composition characterized by containing at least the pigment dispersion and an aqueous medium, and an ink set characterized by comprising at least the ink composition.
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