Patent ID: 6244176
Filing Date: 2001-06-12
Classification: B41F

Abstract:
A printing apparatus comprising a driving roll, a supporting roll, an elastic endless offset blanket stretched between the driving roll and the supporting roll, a plurality of plate cylinders for transferring inks having a plurality of different colors onto the elastic endless offset blanket, a plurality of first impression drums arranged to have the endless offset blanket held between the first impression drums and the plate cylinders, ink supply means for supplying the inks of the plural colors to the plate cylinders, and a second impression drum positioned to push the supporting roll and to have a printing medium held between the supporting roll and the second impression drum, the inks of the plural colors transferred onto the elastic endless offset blanket being printed on the printing medium in a single operation, wherein said endless offset blanket comprises a reinforcing layer consisting of a single string layer or a plurality of string layers, a compressible rubber layer formed on the reinforcing layer, and an ink-resisting surface rubber layer formed on the compressible rubber layer.