Signature inspection device for folder of web printing press

Details Signature inspection device for folder of web printing press Signature inspection device for folder of web printing press

1991-10-01

1993-02-23

Look, Edward K.

Sheet-material associating

Associating and folding

Sheet associating

270 32, 493 12, B42C 100, B31B 100

Patent

active

051883481

ABSTRACT:
A phase difference is determined between a signature detection sensor signal and a reference timing signal from a rotary encoder and displayed as a deviation amount to determine a tendency of the deviation, and the printing press can be adjusted according to the tendency to prevent paper jamming.

REFERENCES:
patent: 3815895 (1974-06-01), Dufour
patent: 3822877 (1974-07-01), Littleton
patent: 3948510 (1976-04-01), Iwamoto
patent: 4936562 (1990-06-01), Rowe
patent: 5026035 (1991-06-01), Martinez Sanz
patent: 5049227 (1991-09-01), Long
patent: 5125635 (1992-06-01), Iwabuchi

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