Aqueous ink composition and ink jet recording process
AssigneeSeiko Epson Corporation
InventorsYoshiyuki Koike, Hiroshi Ito
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Abstract
The invention provides an aqueous ink composition which contains at least (a) a glycol ether type water-soluble organic solvent, (b) an acetylene glycol type surfactant and (c) a pigment, wherein the pigment has a ratio (B/A) of its dissolution amount (B) in the ink liquid medium at 40° C. to its dissolution amount (A) in the ink liquid medium at 25° C. (A) of from 1 to 10.
Claims12
An aqueous ink composition which contains at least (a) a glycol ether type water-soluble organic solvent, (b) an acetylene glycol type surfactant and (c) a pigment, wherein the pigment has a ratio (B/A) of its dissolution amount (B) in the ink liquid medium at 40° C. to its dissolution amount (A) in the ink liquid medium at 25° C. of from 1 to 10.
Dependencies are inferred from the claim text.