In the field of printing process, printing paper, offset printing spot color ink drying rate is too slow, free binders of increasing permeation will lead to dark ink, lack luster. Ink drying too quickly, in printing ink surface easily conjunctiva, affect the production, may also lead to ink crystallization and subsequent influence dry overprint ink printing. 

1, the surface strength of paper. 

Paper surface strength and printing paper printing spot color ink adhesion can allocate large: on the contrary, the adhesion to adjust some, otherwise the paper off powder. The hair is very serious, serious impact on product quality and production efficiency, which is often the main motivation for the regulation of ink adhesion. 

2, printing speed. 

Fast speed, the adhesion of the deployment requirements of small, large and vice versa. 

The faster, more prone to galling and ink unevenness phenomenon, the need to reduce the adhesion of the. 

3, workshop temperature. 

Temperature increases, the cohesion of printing paper, offset printing spot color ink will decline, more prone to aggravate emulsification, dot rate increased problems, inking to advance the ink adhesion of bigger on the contrary, the adjustment of small ink adhesion. 

In the packaging of offset printing, paper printing printing spot color ink drying too slowly, the most common defects are prone to rubbed against dirty. Master of printing paper, offset printing spot color ink can not only save materials, and the personal quality and technical level will have improved. An excellent ink transfer, the development of new type of ink, color innovation, the cost of printing ink plays a very important role.