Method and device for feeding, aligning and holding a sheet on a

Details Method and device for feeding, aligning and holding a sheet on a Method and device for feeding, aligning and holding a sheet on a

1992-05-04

1994-02-22

Eickholt, Engene H.

Printing

Processes

Position or alignment

101142, 271 82, 271204, 271243, B41F 900, B65H 904

Patent

active

052878090

ABSTRACT:
A method of feeding, aligning and holding a sheet on a cylinder of a sheet-processing machine, which includes, prior to an occurrence of a gripping operation on a sheet at a cylinder of a sheet-processing machine, forcing a leading edge of the sheet into a contact position wherein the leading edge of the sheet is pressed against moving front lays which are guided over the cylinder, opening sheet grippers carried by the cylinder, inserting the leading edge of the sheet which is in the contact position into the sheet grippers, and maintaining the leading edge of the sheet in the contact position with the front lays until just before closing the sheet grippers; and a device for performing the method.

REFERENCES:
patent: 1155505 (1915-10-01), Niles
patent: 1916454 (1933-07-01), Wohlrabe
patent: 2201726 (1940-05-01), Grundhoefer
patent: 2374668 (1945-05-01), Davidson
patent: 2638342 (1953-05-01), Luehrs
patent: 4471695 (1984-09-01), Ishii
patent: 4756245 (1988-07-01), Roch
patent: 5088404 (1992-02-01), MacConnell
patent: 5103733 (1992-04-01), Drapatsky et al.

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