On-line sheeter of printing system and method of changing length

Details On-line sheeter of printing system and method of changing length On-line sheeter of printing system and method of changing length

1993-09-01

1995-02-21

Eickholt, Eugene H.

Printing

Rolling contact machines

Rotary

101227, 101483, B41F 1326

Patent

active

053905997

ABSTRACT:
A sheeter which can cut a running printed sheet discharged from a web-fed rotary gravure press, a web-fed rotary forms press, or similar rotary press with higher accuracy is provided on-line. The sheeter can selectively carry out a change in the length of cut with the change of a printing plate cylinder. A drum roller, which has the same diameter as that of the plate cylinder in a printing unit or a diameter that is enlarged by an amount of the applied tension, is provided in such a way that it is exchangeable and lies on a sheet guide passage introducing the running printed sheet to a cutting section with the flying knife. The drum roller is rotationally driven synchronous with the plate cylinder by a driving shaft of the plate cylinder, and feeds the running printed sheet to the cutting section by winding it. When exchanging the plate cylinder, the existing drum roller is exchanged with another which has the same diameter as that of the plate cylinder to be changed or a diameter enlarged to compensate for the amount of applied tension.

REFERENCES:
patent: 3808971 (1974-05-01), Staamann
patent: 3899946 (1975-08-01), Niepmann
patent: 4290837 (1981-09-01), Bova
patent: 4512256 (1985-04-01), Schriber et al.
patent: 4587898 (1986-05-01), Welschiau
patent: 4736446 (1988-04-01), Reynolds et al.

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