Sheet turning and registration system

Details Sheet turning and registration system Sheet turning and registration system

1988-08-02

1989-10-31

Schacher, Richard A.

Sheet feeding or delivering

Feeding

By means to change direction of sheet travel

271227, 271250, 271184, B65H 702

Patent

active

048772348

ABSTRACT:
A copy sheet rotator in which a sheet is moved by two separately driven crowned rolls that form nips with cooperating idler rolls. For sheet turning, one roll is stopped with the sheet in the nip while the other roll continues to drive and rotate the sheet. A separate scuffer roller registers the rotated sheet after it has been released from the rolls without scuffing damage. The position, angle and velocity of the scuffer allows the sheet to remain in tension during rotation and therefore prevents buckling without the need for nip release systems.

REFERENCES:
patent: 2190413 (1940-02-01), Davidson
patent: 2190416 (1940-02-01), Davidson
patent: 2243557 (1941-05-01), Finster
patent: 3741357 (1973-06-01), Krysiuk
patent: 4052054 (1977-10-01), Cardwell
patent: 4445679 (1984-05-01), Bay
patent: 4456116 (1984-06-01), Jarman
patent: 4482147 (1984-11-01), Hibi
patent: 4500086 (1985-02-01), Garavuso
patent: 4511242 (1985-04-01), Ashbee
patent: 4669719 (1987-06-01), Fratangelo
patent: 4733857 (1988-03-01), Feldeisen

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