Water base ink for ink-jet recording

Details Water base ink for ink-jet recording Water base ink for ink-jet recording

2008-06-16

2009-12-29

Klemanski, Helene (Department: 1793)

Compositions: coating or plastic

Coating or plastic compositions

Marking

C106S031850

Reexamination Certificate

active

07637993

ABSTRACT:
A water base ink for ink-jet recording contains self-dispersible carbon black as a coloring agent. The total content of an organic acid having a number of carbon or carbons of 1 to 6 and a salt of the organic acid is not more than 400 ppm. The organic acid having a number of carbon or carbons of 1 to 6 includes monocarboxylic acid, dicarboxylic acid and oxy acid, and the salt of the organic acid includes salts of these acids. When the water base ink is used in an ink-jet recording apparatus, the discharge stability of the ink is improved.

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