Compositions: coating or plastic – Coating or plastic compositions – Marking
Reexamination Certificate
2004-03-04
2008-12-09
Klemanski, Helene (Department: 1793)
Compositions: coating or plastic
Coating or plastic compositions
Marking
C534S806000
Reexamination Certificate
active
07462228
ABSTRACT:
The present invention relates to a water-based black ink composition comprising a water-soluble black dye (A) exhibiting ozone fastness and a condensate compound (B) of 4,4′-dinitrostilbene-2,2′-disulfonic acid and aminobenzenes or a reduction product (C) thereof. Said ink composition is suitable for use in ink-jet recording, and realizes neutral hue and black color of high printing density. Further, a printed matter obtained is excellent in ozone gas fastness, light fastness, moisture fastness and color rendering properties. Still further, storage stability as a recording liquid is excellent.
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Kawaida Yoshiaki
Matsui Takahiko
Nagasaki Kazunobu
Ohno Hiroaki
Shirasaki Yasuo
Klemanski Helene
Nields & Lemack
Nippon Kayaku Kabushiki Kaisha
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