Multi-colour off-set printing.

摘要

In a repetitive off-set multi-colour printing process, two or more prints of ink in different colours are each laid down by screen printing on to an intermediate surface, and the prints taken up one by one on to the surface of a transfer pad. The design comprising the prints so collected together on the pad is then transferred to the surface of an article in a single impression by the pad. Suitable apparatus comprises a rotatable pad support 12 carrying three uniformly-distributed pads T, an article support 10, and two print-supplying units 14 and 16. Each unit comprises a screen printing device 20 and a platen 18. The platen is rotatable to locate each end in turn beneath the printing device 20 and one of the pads T. Indexing rotations of the pad support bring each pad in turn into position to take up the prints successively and to impress the collected design on to an article P presented by the article support.