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US 2003/0189627 A1Published application
Water base ink set for ink-jet recording
AssigneeBrother Kogyo Kabushiki Kaisha
InventorsMasateru Kawamura, Narumi Koga, Naomichi Kobayashi, Hideo Ohira, Shunichi Higashiyama, Masaya Fujioka
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Abstract
An ink set for ink-jet recording of the present invention comprises a black ink which has a surface tension of not less than 40 mN/m at 25° C., and a color ink which has a surface tension of not less than 40 mN/m at 25° C. The viscosity ratio of the color ink with respect to the black ink is not less than 1.3. The feathering of the ink is avoided, and the bleeding, which would otherwise appear at the boundary between the black ink and the color ink, is avoided.
Claims10
An ink set for ink-jet recording, comprising:
- a black ink which has a surface tension of not less than 40 mN/m at 25° C.;
- and
- a color ink which has a surface tension of not less than 40 mN/m at 25° C., wherein:
- a viscosity ratio of the color ink with respect to the black ink is not less than 1.3.
1 more element
Dependencies are inferred from the claim text.