Covering for sheet-supporting cylinders and drums in rotary offs

Details Covering for sheet-supporting cylinders and drums in rotary offs Covering for sheet-supporting cylinders and drums in rotary offs

1985-06-17

1987-08-25

Schacher, Richard A.

Sheet feeding or delivering

Delivering

By pneumatic conveyor

101348, 226 95, 226 97, 271196, B65H 2924

Patent

active

046887849

ABSTRACT:
A covering for sheet-supporting cylinders and drums on rotary offset printing machines for printing both on single and both sides of a sheet, the covering having a smooth surface on one side thereof and a textured surface on the opposite side thereof, with sheet-supporting surfaces projecting from the textured surface and formed of hydrophilic and chemically and wear-resistant material includes a device for defining perforations formed in the textured surface, and a device connected to the perforations for selectively applying blowing air and suction therethrough.

REFERENCES:
patent: 3521802 (1970-07-01), Bossons
patent: 3744693 (1973-07-01), Greiner
patent: 3835597 (1974-09-01), Wasil
patent: 4029249 (1977-06-01), Nagel
patent: 4207998 (1980-06-01), Schmid
patent: 4285275 (1981-08-01), Sato
patent: 4390119 (1983-06-01), Smetana

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