Importance

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Abstract

To make it possible to variably print while preventing a printable material from loosening and fluttering and further preventing the material from damaging and contamination by printing. To this end, an impression cylinder 6 in a printing unit 3a-3d disposed between a pair of feed rollers 1, 2 is adapted to be driven to rotate synchronously with the feed rollers, and there are further provided: a guide roller 14a, 14b at least at one of upstream and down-stream sides of impression cylinder 6 by which the printing material to pass between printing cylinder 5 and impression cylinders 6 is wound at a certain angle of winding on impression cylinder 6; on impression cylinder 6 a timing and a V pulley 15, 16 which are identical in pitch circle diameter to each other; and on guide roller 14a, 14b a timing and a V pulley 17a, 17b and 18a, 18b which are identical in pitch circle diameter to each other; wherein the timing and V pulleys provided on said impression cylinder and those provided on the guide roller have a ratio between their pitch circle diameters which is identical to a ratio between the outer diameters of the impression cylinder and guide roller means; and a timing belt 22 and a V belt 23 are adapted to be wound on the timing pulleys and the V pulleys, respectively.

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First Claim