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US 4,285,727 AGranted
Ink compositions for ink jet recoding
AssigneeKonishiroku Photo Industry Co., Ltd.
InventorsMasafumi Uehara, Mitsuyoshi Itano
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Abstract
An ink composition for ink jet recording is disclosed which contains a water soluble dye, polyhydric alcohol, and potassium carbonate in an aqueous medium.
Claims12
An ink composition for ink jet recording which consists essentially of an aqueous medium, 0.5 to 8% by weight of a water-soluble acid or direct dye, 45 to 70% by weight of a polyhydric alcohol having 2 to 6 carbon atoms, and an amount of potassium carbonate effective to improve the storability of said composition.
Dependencies are inferred from the claim text.