| abstract |
【Task】 An object of the present invention is to provide a high-quality paper used for printing paper, writing paper, and the like, which is characterized by being bulky, having a low rigidity reduction, a high friction coefficient, and excellent printing workability. In particular, it is suitably used for offset printing paper. [Solution] An internal paper quality improver comprising a polymer emulsion containing a natural cationic polymer (A) and at least a polymer particle (B) containing a structural unit derived from a vinyl monomer, and a filler in an amount of 5 to 40% by weight. Then, paper containing the stock is made to obtain a high quality paper having a coefficient of dynamic friction of 0.20 to 0.75. |