| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide newsprint for offset printing, having high surface strength, improved in piling of paper particles on a blanket when subjected to the offset printing, and further improved in such an adhesion-caused trouble that the paper is caught by the blanket when subjected to the offset printing. SOLUTION: This newsprint for offset printing is given by applying a surface treatment to base paper of the newsprint, so that a product of a viscosity of the surface treatment and an amount of the surface treatment applied to both the surfaces of the base paper is in a range of 2-15 cps.g/m<2> , wherein the viscosity is measured by a viscometer of B-type (using a No.1 rotor) at a concentration of 10%, a temperature of 50 deg.C, and a rotational speed of 60 rpm, and the surface treatment contains at least one kind of processed starch selected from (a) etherified starch which is given by etherifying starch with a compound expressed by the general formula (1): (AO)n H (A is ethylene or propylene residue; and n is an integer of 1-15), (b) esterified starch which is given by esterifying the starch with a monocarboxylic or dicarboxylic acid having a 4-18C straight chain, branched chain or cyclic alkyl or alkenyl group, and (c) aldehyde starch.</p> |
