| abstract |
Disclosed is a method for producing an ink composition excellent in ejection stability without causing ink ejection failure of an ink jet printer derived from a Ca compound without removing and purifying the Ca compound in the raw material for producing the ink composition, and the ink composition To provide. A pigment (a) from which at least a Ca compound has not been removed, a Ca compound-soluble pigment dispersant (b), and a fixing resin (c) are represented by the following general formula (1): A method for producing an oil-based ink composition for an ink jet printer, characterized by being dispersed in an organic solvent (d) containing X1- (O-C 2 H 4 ) n -OX2 (1) (X1 and X2 in the above formula are alkyl groups having 1 to 4 carbon atoms, which may be the same or different, and n represents an integer of 2 to 4). [Selection figure] None |