Method and system for the lateral alignment of sheets

Details Method and system for the lateral alignment of sheets Method and system for the lateral alignment of sheets

1993-01-22

1994-06-21

Burr, Edgar S.

Printing

Rolling contact machines

Rotary

101242, 271227, 271236, 271250, B41F 1324

Patent

active

053220129

ABSTRACT:
A method and system are provided for aligning the lateral edge of sheets fed to a printing press. The lateral position of a sheet is detected. A slidable suction device beneath the sheet is operated to pull the sheet toward a lateral abutment at a constant speed, the suction being applied at an individual time for each sheet in accordance with the detected position. Suction pressure is released when the sheet reaches the side lay, such that suction pressure is only applied for the time necessary to place the sheet in proper registration.

REFERENCES:
patent: 3964828 (1976-06-01), Yamada et al.
patent: 4260149 (1981-04-01), Melzer
patent: 4591143 (1986-05-01), Jeschke
patent: 4615520 (1986-10-01), Jeschke et al.

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