Sheet transfer drum

Details Sheet transfer drum Sheet transfer drum

1986-10-06

1988-04-05

Crowder, Clifford D.

Printing

Rolling contact machines

Rotary

101410, 101420, 101136, 101183, 271206, 271276, B41F 2106, B41F 2110, B41L 2108

Patent

active

047351420

ABSTRACT:
Sheet transfer drum located between two printing units of a multicolor sheet-fed rotary printing press and having a cylindrical surface formed of a plurality of sheet-carrying elements arranged in succession around the circumference of the drum, including a suction means applicable to the trailing edge of a sheet of paper to be printed, mountings located at ends of the sheet transfer drum for carrying the sheet to be printed, each of the end mountings being formed by a respective guide channel oriented in circumferential direction of the sheet transfer drum, the guide channel having a radially outer portion and a radially farther inward portion, at least the outer of the radial portions being substantially equal in length to a maximum format of the sheet.

REFERENCES:
patent: 1107254 (1914-08-01), Blackford
patent: 3642274 (1972-02-01), Herrington et al.
patent: 4378734 (1983-04-01), Wirz
patent: 4608925 (1986-09-01), Arlt

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