The main factors affecting the glossiness of printed materials

The surface smoothness of paper is the surface smoothness of paper. It represents the time required for a certain amount of air to pass through a certain amount of air in a certain area of ​​paper under a certain pressure, in the gap between paper and glass, in seconds ( S) is the unit of calculation. The surface smoothness of various papers is different.

Paper absorbency refers to the paper's ability to absorb ink-linked materials. The more rough paper, the larger the fiber gap and the stronger the ability to absorb the material. The ink absorption of different types of paper is different. When the ink absorption of the paper is too large, and the ink layer is dried on the paper surface, the ink binder material is absorbed in a large amount, and the pigment and other particles float on the surface of the print to form a diffuse reflection, so that no gloss can be produced. The ink absorption of the paper is too small, the penetration of the linking material is small, and a printed product with a vivid color and high gloss can be obtained, but at the same time, it is prone to phenomena such as slow drying, easy adhesion, and crystallization.

The quality of the gloss of the paper itself also determines the glossiness of the print. How the gloss of the coated paper surface depends on the light-enhancing materials used in papermaking and the precision of the paper. The combined effect of paper glossiness and ink absorption is expressed as the surface efficiency of the paper. Specifically, the surface efficiency of the paper can be represented by the arithmetic average value of glossiness and ink absorption.