NEWSPRINT PAPER FOR OFFSET PRINTING

摘要

A newsprint paper for offset printing that despite a high content of deinked pulp, realizes marked improvement with respect to strike-through at offset printing and can reduce the piling of paper powder on printer blanket, excelling in printing operation efficiency and printed surface quality. The strike-through of newsprint paper for offset printing is markedly improved b y incorporating of a filler at a content, in terms of ash content per paper weight, of more than 15 to less than 40 wt.%. Not only improvement to strike - through but also reduction of the piling of paper powder on printer blanket can be accomplished by incorporating of calcium carbonate of 0.5 to 5 .mu.m average particle size and 0 mV or higher zeta potential as the filler at a content, in terms of ash content per paper weight, of more than 15 to less than 40 wt.%.