CAN BODY MANUFACTURING METHOD, PRINTING DEVICE, AND BEVERAGE CAN

摘要

With the printing device, first, as shown in (A), white layers (90) are formed by a first white inkjet head on the surface of the can body (10). Next, as shown in (B), irradiation of ultraviolet rays by a first irradiation lamp (261) is performed and the white layers (90) are cured. Then, the can body (10) is moved to a second white inkjet head and, as shown in (C), more white ink is loaded on some of the white layers (90) formed by the first white inkjet head. As a result, the thickness of some of the white layers (90) is increased. Next, the can body (10) passes successively under multiple color inkjet heads. As a result, color ink layers (91) are formed on the surface of the can body (10) and the white layers (90), as shown in (D).

主权项

1. A can body manufacturing method, the can body being used for a beverage can, the can body manufacturing method comprising:
forming a layer on an outer circumferential surface of the can body which is formed cylindrically with a metal material and on the outer circumferential surface of which a metal base appears, the layer covering the metal base; and after forming the layer covering the metal base, forming an image on the outer circumferential surface of the can body, wherein formation of the layer covering the metal base is performed by an inkjet head having a plurality of ink ejection ports and capable of controlling whether or not an ink is ejected for each of the plurality of ink ejection ports.