| 摘要 |
PROBLEM TO BE SOLVED: To appropriately determine the end point in an aging process, that is, to determine whether the surface of a pigment particle is well wet with a vehicle or not without deteriorating ink characteristics, such as printing characteristics upon high-speed printing, in a composition for printing ink including a pigment.SOLUTION: A method for evaluating a composition for printing ink is provided, which measures capacitance of the composition for printing ink when aging after performing dispersion treatment of the composition for printing ink including a pigment and calculates the rate of change of the measured values. The method for producing printing ink including the evaluating method is also provided. |
