PRINTING METHOD ON CURVED SURFACE AND CURVED SURFACE BODY PRINTED BY THAT METHOD

摘要

A method for printing on a curved surface and a printed curved surface body using the method. The method includes the steps of: applying printing ink having a viscosity of 5-500 PaS, preferably 5-250 PaS, to a protrusion portion of a relief printing master plate 3 which is a flat plate with the protrusion portion 0.1-50 µm high, preferably 0.1-25 µm high in height h ; pressing a rubber or rubbery roll-like elastic blanket 2 having an elastic portion whose thickness T has a relation of 2H‰ T‰ 8H with respect to a level difference H of a to-be-printed curved surface body 10 and which has a hardness (JIS A-scale) of 3-40, preferably 3-20, onto the relief printing master plate 3 supplied with the printing ink while applying constant pressure to the roll-like elastic blanket 2 and smoothly rotating the roll-like elastic blanket 2, so as to transfer the printing ink to an outer circumferential surface of the roll-like elastic blanket 2; and moving the roll-like elastic blanket 2 having the printing ink transferred thereto, and bringing the roll-like elastic blanket 2 into rotational pressure contact with a surface of the to-be-printed curved surface body 10 so as to perform printing thereon.