Gravure printing machine is the main characteristics of plate on the graphic part of concave, convex portion of the blank, and letterpress printing machine layout structure on the contrary.The machine in the printing monochrome, put the plates submerged in the ink tank rolling, the surface of the printing plate was coated with ink layer.Then, the surface of the printing plate which belongs to the blank part of the ink layer is scraped, raised portions formed blank, and the recessed portion is filled with ink, recessed deep place also thicker ink layer.The machine through the pressure effect of the recessed portion of the ink is transferred to the printed matter, thus obtaining printed matter.
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