Importance

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Abstract

The web-fed printing machine preferably intended for the printing of banknotes has two closely adjacent impression cylinders (2, 3), each of which interacts with several blanket cylinders (4, 6). Each blanket cylinder (4, 6) is inked by a plate cylinder (5, 7) which receives its ink from its own inking unit (9, 9'; 11, 11'). The paper web (P) runs between the respective impression cylinder (2, 3) and blanket cylinders (4, 6), partially looping first round one impression cylinder (2) and then in the opposite direction round the other impression cylinder (3), so that the two sides of the paper are successively printed directly with the individual colors. All the blanket and plate cylinders interacting with an impression cylinder (2, 3) are arranged on a respective common exchangeable machine stand (15, 16). Consequently, in order to exchange the blanket and plate cylinders for cylinders of a different diameter for the purpose of changing the printing format, the machine stands (15, 16) equipped with corresponding cylinders are exchanged as a whole.

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First Claim