That is, a relief printing uses a movable type, a lead plate, a copper-zinc plate, a plastic plate, a photosensitive resin plate, a rubber relief plate, a flexographic plate, or the like of a lead alloy, which is a direct printing plate. Letterpress printing is made by flat pressing, circular pressing and round pressing. The ink on the letterpress is higher than other parts, and it is printed on the paper through the raised part when printing. Corrugated board printing is printed using flexographic embossing.