Compositions: coating or plastic – Coating or plastic compositions – Marking
Reexamination Certificate
2007-10-02
2007-10-02
Klemanski, Helene (Department: 1755)
Compositions: coating or plastic
Coating or plastic compositions
Marking
C106S031460, C106S031470, C106S031580, C106S031590, C347S100000
Reexamination Certificate
active
11042832
ABSTRACT:
An object of the present invention is to provide an ink composition that can improve the preservation characteristics (gas fastness) of an image produced by an ink composition which uses phthalocyanine group cyan dye. The present invention provides an ink composition wherein at least water, the phthalocyanine group cyan dye indicated by the general formula (I), and an aromatic compound having a sulfone group and/or the salt thereof represented by the general formulae (a) and/or (b) are contained; and an ink composition wherein at least water, the phthalocyanine group cyan dye indicated by the general formula (VIII), and an aromatic compound having a sulfone group and/or the salt thereof represented by the general formulae (a) and/or (b) are contained. Moreover, the present invention provides an inkjet recording method in which recording is conducted by discharging ink droplets of an ink composition and causing the ink droplets to adhere to a recording medium, wherein as said ink composition, the aforementioned ink composition is used. Further, the present invention provides a record which is obtained by using the aforementioned ink composition.
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Kitamura Kazuhiko
Oki Yasuhiro
Klemanski Helene
Ladas and Parry LLP
Seiko Epson Corporation
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