Ink composition for ink-jet recording
AssigneeKonishiroku Photo Industry Co., Ltd.
InventorsMasafumi Uehara, Mitsuyoshi Itano
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Abstract
The present invention relates to an ink composition for ink-jet recording. The ink is an aqueous solution comprising a water soluble acid or direct dye or mixtures thereof and a compound selected from the class of polyhydric alcohols having 1-4 carbon atoms, hexylene glycol, triethylene glycol, di-propylene glycol and 1,2,6-hexanetriol. The composition of this invention has a viscosity of from 4-20 c.p.s., a surface tension of from 40-60 dyn/cm and a specific resistance of from 5.times.10.sup.3 -1.times.10.sup.5 ohm cm.
Claims6
An ink composition for ink-jet recording which is an aqueous solution comprising a water-soluble acid dye, a water soluble direct dye, or mixtures thereof, and a compound selected from the class consisting of a polyhydric alcohol having 1-4 carbon atoms, hexylene glycol, triethylene glycol, di-propylene glycol and 1,2,6-hexane triol, said composition having a viscosity of from 4 to 20 cps, a surface tension of from 40 to 60 dynes/cm and a specific resistance of from 5.times.10.sup.3 to 1.times.10.sup.5 .OMEGA.cm.
Dependencies are inferred from the claim text.