Device for sheet-format adjustment of a sheet-transfer drum

Details Device for sheet-format adjustment of a sheet-transfer drum Device for sheet-format adjustment of a sheet-transfer drum

1994-05-10

1995-04-04

Eickholt, Eugene H.

Printing

Flexible-sheet-securing devices

271277, 101378, B41F 128

Patent

active

054027233

ABSTRACT:
Device for sheet-format adjustment of a sheet-transfer drum, formed of sheet-holding elements displaceable in guides in a rotational direction of the sheet-transfer drum and having at least two gripper devices for holding sheet leading and trailing edges, the gripper devices being adjustable relative to one another in an outer cylindrical surface of the sheet-transfer drum in the rotational direction thereof, the sheet-holding elements and the gripper devices being simultaneously adjustable for sheets to be transported on the sheet-transfer drum, includes resilient elements connected to adjacent sheet-holding elements on both sides of the sheet-transfer drum, the resilient elements having substantially identical spring constants.

REFERENCES:
patent: 3625150 (1971-12-01), Wurzburg et al.
patent: 4083303 (1978-04-01), McInerny
patent: 4476783 (1984-10-01), Tsukaski et al.
patent: 5026045 (1991-06-01), Wirz et al.
patent: 5172634 (1992-12-01), Iwamoto

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