Characteristics of Newsprint

Newsprint features include: a loose, lightweight texture with good elasticity; excellent ink absorption, ensuring ink adheres well to the paper surface. After calendering, both sides become smooth and lint-free, resulting in clear and rich impressions on both sides; adequate mechanical strength; good opacity; and suitability for high-speed rotary press printing.

Water Absorption

Newsprint exhibits high water absorption. During printing, the paper's water absorption and expansion significantly impact the registration accuracy of color printing. Controlling and mitigating the effects of paper water absorption on registration precision is crucial, particularly for newsprinters operating with suboptimal equipment and raw materials.

Moisture-Induced Deformation

Newsprint fibers are coarse and loosely structured, causing greater water absorption and elongation compared to coated paper or offset paper. Since color newspaper printing commonly employs wet offset processes, paper inevitably undergoes moisture-induced expansion and contraction during printing, significantly impacting registration accuracy.