PRODUCTION OF COATED PAPER FOR OFFSET PRINTING

摘要

PROBLEM TO BE SOLVED: To produce a coated paper for offset printing excellent in operating efficiency at the time of undercoating and further excellent in opacity, print through, printed surface strength and developing properties of white paper glossiness. SOLUTION: A needlelike or a light columnar calcium carbonate as a pigment component is wet pulverized to prepare an undercoating liquid containing the needlelike or the light columnar calcium carbonate after the pulverizing in an amount of >=40 wt.% based on 100 wt.% of a pigment component and a base paper is then undercoated with the resultant undercoating liquid by a film transfer type coating device and further finish coated when producing a coated paper for offset printing by coating the base paper with the coating liquids comprising the pigment and an adhesive at least twice.