Printing requirements for dictionary paper

Offset printing machines must be used in conjunction with resin ink. The viscosity of the ink should be controlled within 12 to 15 seconds (measured by applying 4 cups) to prevent the back from getting dirty. The printing pressure adjustment accuracy requirement is ±0.05mm, and the ink layer thickness should not exceed 1.5μm. It is recommended to use 90 lines per centimeter or more with a screen count to ensure the clarity of the graphics and text.

During the paper drying process, a 24-hour constant temperature and humidity treatment (temperature 22±2℃, humidity 50%±5%) is required to ensure that the moisture content of the paper is balanced and stable. The folding process must use a grid-type folding machine to avoid fiber breakage caused by knife-type folding.