C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 11/00 (2006.01) C09B 67/22 (2006.01) C09B 67/38 (2006.01) C09D 7/12 (2006.01)
Patent
CA 2324125
A water-soluble ink composition comprising an optimum combination of a direct dye and an acid dye and having a high chroma and excellent resistance to water and light, and an ink jet recording apparatus using the same, are disclosed. A blue ink composition comprises (A) a xanthene magenta dye, (B) C.I. Direct Red 227, and (C) a copper phthalocyanine dye at an (A) /(C) weight ratio of 1: 11 to 1:50. A red one comprises (A) , (B) , and (C) a yellow dye at an (A) / (B) weight ratio of 1:2 to 1:4.
Kato Kenichi
Mukai Hiroshi
Riches Mckenzie & Herbert Llp
Seiko Epson Corporation
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