The adaptability and ink absorption of paper

The smooth and high-quality printing of paper depends on its printability. The requirements for printing paper are as follows: the paper’s color tone should match the desired color purity as closely as possible; dust content must stay within acceptable limits; light transmittance should be minimized; and mechanical strength must be maintained during normal printing. Additionally, the paper’s thickness, density, and structural characteristics should be consistent within the same batch. The paper edges must be right angles, with a slope error not exceeding ±3mm.

The ink absorption of paper mainly depends on the spacing between its fibers. When the gaps are too small, limited fiber exposure reduces capillary action, decreasing ink absorption. Conversely, if the gaps are too large, excess binder along with ink and pigments is absorbed, causing the print to show through.