Compositions: coating or plastic – Coating or plastic compositions – Marking
Reexamination Certificate
2007-10-09
2007-10-09
Klemanski, Helene (Department: 1755)
Compositions: coating or plastic
Coating or plastic compositions
Marking
C106S031460, C106S031470, C106S031490, C106S031590, C347S100000
Reexamination Certificate
active
11311869
ABSTRACT:
It is an object of the present invention to provide an ink composition with which the indoor storage stability (gas resistance) of an image produced with an ink composition featuring a phthalocyanine-based cyan dye can be increased without causing any additive precipitation or bronzing. The present invention provides an ink composition containing at least water, a phthalocyanine-based cyan dye, and a lithium salt of an aromatic compound having a sulfo group and expressed by General Formulas 1 and/or 2 in the claims. The present invention also provides an ink composition containing at least water, a phthalocyanine-based cyan dye, and a lithium salt of an aromatic compound having a sulfo group and expressed by General Formulas 5 and/or 6 in the claims. The present invention further provides an ink composition containing at least water, a phthalocyanine-based cyan dye, and a lithium salt of an aromatic compound having a sulfo group and expressed by General Formulas 1 and/or 2 in the claims or a lithium salt of an aromatic compound having a sulfo group and expressed by General Formulas 5 and/or 6 in the claims, wherein the phthalocyanine-based cyan dye is expressed by Formula 3 in the claims.
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Kitamura Kazuhiko
Oki Yasuhiro
Klemanski Helene
Ladas & Parry LLP
Seiko Epson Corporation
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