PURPOSE: To provide a method for producing cast-coated paper having a high gloss and effectively solved in the troubles of irregular glosses and pinholes in high productivity.
CONSTITUTION: The above-mentioned purpose is achieved by employing a pigment containing soft calcium carbonate comprising hexagonal calcite primary particle aggregates having a secondary particle average size D10 of 0.5-2.5μm, a D30/D10 of ≤0.5 and a BET specific surface area of 15-30m2/g in an amount of 10-80 pts. per 100 pts. of the total amount of the pigment as the pigment of the cast-coated paper. The D10 is an average diameter of the secondary particles subjected to an ultrasonic dispersion treatment for 10 min and measured with a sedigraph, and the D30 is an average diameter of the secondary particles subjected to the treatment for 30 min.
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