Printed surfaces were studied by an aid of a scanning-type electron microscope (SEM) and using castcoarted papers printed a black ink for proof. There are many pores on the surface of the paper. In the sample attached small amount of ink (ca. 0.04gm
-2), cylindorid ink particles attached oriented to printing direction. In the sample with ca. 0.3gm
-2 of the ink, groups of the ink particles are formed. The sample with about 0.6gm
-2 of ink is netlike ink structure formed by combinated ink particles. Each size of the particles was seemed not to be scattered and be independent in the amount of the printed ink. About 0.8gm
-2 of ink covered roughly the surface except large pores. In the sample with ca. 2.0gm
-2, undulation can be indetectable. The samples printed black ink for web off-set were also studied. These results were supported by means of surface roughness parameters.
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