Offset paper is mainly used for printing lithographic (offset) printing presses or other printing machines for higher-grade color prints, such as color pictorials, albums, posters, color printing labels and some advanced book covers and illustrations.
Offset paper is divided into three types according to the ratio of paper pulp, No. 1 and No. 2, and there are two sides, one side and two sides, and two levels of super calendering and ordinary calendering.
The offset paper has small stretchability, uniform absorption of ink, good smoothness, tight opacity texture, good whiteness and strong water resistance. Conjunctival offset printing inks and good quality printing inks should be used. The viscosity of the ink should not be too high, otherwise powder removal and pulling will occur. Also to prevent the back side from getting dirty, generally use anti-dirty agent, dusting or lining paper.
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