The nature of whiteboard paper generally refers to its printing suitability for printing, including some characteristics in the process of transportation and storage. And its printing suitability refers to the necessary premise, copy the inevitable quality of the print should have the physical, chemical reflection. The whiteboard must be of a nature that produces the best printing quality and color effect. The paper in the process of running the drum, can make the printing ink adsorbed on the plate smoothly transferred to the surface, obtain a complete, full, grade clear rich graphic imprinting.

The printing suitability of whiteboard paper includes: the pore layout and ink absorption of the paper; The paper's smoothness and compressibility; The surface strength of the paper; The acid - alkaline paper and paper moisture and retractility.

Whiteboard paper is made of a variety of different plant fibers cross each other and into a network layout, in this network layout, the pores between the fibers filled with a little filler, binder, color to meet the paper itself should have characteristics. Add filler is the progress of paper whiteness, greasy smoothness, opacity; Add the glue is to make the paper has an inevitable water resistance, not easy to be water or other liquids by the infiltration; Add color to make the white board have higher whiteness. The pore layout of whiteboard paper is the base of the paper to absorb ink, which is one of the factors in the permeation and drying of crystal in newspaper printing. Therefore, to inquire about the ink absorption of paper, we must first inquire about the paper's pore layout. Because the pore layout of whiteboard paper and ink penetration, penetration rate, printing greasy slippage, ink penetration agglutination and drying and printing quality have a close relationship.

The pore layout of whiteboard paper must include the paper voidage, the paper voidage represents the air volume in the paper and the paper volume ratio, the paper voidage can be calculated by calculating and experimental measurement. Whiteboard paper ratio = the gap within the volume of air (cell size)/paper volume (cell size) of x100% from the above equation, the white paper inside the volume of air, the greater the issue of whiteboard paper porosity is higher, it also examines the whiteboard paper pore distribution in the state, the less paper fiber, cross more hydrophobic, the greater the gap between the fiber and whiteboard paper pore distribution is the worse. On the contrary, the more paper fibers, the more dense the cross, the smaller the gap between the fibers, the better the layout of white board pores.

Ink agglutination and drying on paper is accelerated with the increase of voidage, and its ink absorption is also increased, but the gloss of ink on paper is decreased with the increase of voidage.

Whiteboard paper has a pore layout, the porous layout of whiteboard paper determines the paper has air permeability, moisture absorption, absorbability and compressibility, which is the paper can absorb water, ink and other substances. In order to guarantee better printing quality and printing effect, printing paper is required to have better ink absorption. The ink absorbability of whiteboard paper refers to the property that ink penetrates into whiteboard paper and is absorbed after the paper comes into contact with ink and transfers the ink to the paper surface. The larger the paper voidage, the more fluffy layout, the more ink absorption, and vice versa, which is often referred to as the whiteboard ink absorption is good.