Compositions: coating or plastic – Coating or plastic compositions – Marking
Reexamination Certificate
2011-08-02
2011-08-02
Eashoo, Mark (Department: 1767)
Compositions: coating or plastic
Coating or plastic compositions
Marking
C524S589000
Reexamination Certificate
active
07988777
ABSTRACT:
An object of the present invention is to provide a black ink composition by which a recorded matter in which a fine surface defect on a recorded matter is effectively suppressed, can be obtained. For this object, the present invention is a black ink composition containing water, carbon black, and a water-soluble polyurethane resin, wherein when a content of carbon black is not less than 0.4% by weight and less than 1.5% by weight, a content of a solid matter of the water-soluble polyurethane resin is not less than 0.67-fold and not more than 2.5-fold a content of the carbon black and, when a content of the carbon black is less than 0.4% by weight, a content of a solid matter of the water-soluble polyurethane resin is not less than 7.5-fold a content of the carbon black.
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Sano Tsuyoshi
Tanoue Takeshi
Eashoo Mark
Heincer Liam J
Ladas & Parry LLP
Seiko Epson Corporation
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