Sheet transport drum with sheet suction holding surface

Details Sheet transport drum with sheet suction holding surface Sheet transport drum with sheet suction holding surface

1992-08-10

1993-09-07

Eickholt, Eugene H.

Printing

Work supporting members

Grippers

1014151, 271195, 271276, B41F 130

Patent

active

052419070

ABSTRACT:
A sheet transport drum utilizes a plurality of drum peripheral envelope surface elements which are each secured to spaced apart disks. Each of these drum envelope surface elements has a plurality of vacuum chambers which are supplied with vacuum in a circumferentially sequential manner. A sheet to be transported by the sheet transport drum is smoothly attracted to the drum's outer perforated envelope plate without wrinkling or buckling.

REFERENCES:
patent: 3986455 (1976-10-01), Jeschke et al.
patent: 4127265 (1978-11-01), Wirz et al.
patent: 4357870 (1982-11-01), Rudolph et al.
patent: 4378734 (1983-04-01), Wirz
patent: 4852488 (1989-08-01), Abendroth et al.
patent: 5029834 (1991-07-01), Boldrini et al.
patent: 5184553 (1993-02-01), Kobler et al.
patent: 5186107 (1993-02-01), Wieland

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