Sheet separator including passage gap adjusting mechanism for se

Details Sheet separator including passage gap adjusting mechanism for se Sheet separator including passage gap adjusting mechanism for se

1985-03-29

1986-08-05

Schacher, Richard A.

Sheet feeding or delivering

Feeding

Separators

271263, B65H 352

Patent

active

046038485

ABSTRACT:
A sheet separator for a sheet feeder comprises a friction cylinder which is rotatable for feeding a sheet from a stack of sheets. A retaining member is mounted for radial movement with respect to the friction cylinder. The retaining member has a friction surface which holds back other sheets in the stack and which forms with the friction cylinder a passage gap which is adjusted to the thickness of a sheet to be fed. A carrier is connected to and supports the retaining member. An adjustment mechanism is provided between the carrier and the retaining member for adjusting the passage gap width. A bracket is mounted for radial movement on the carrier and has a contact surface for engaging the friction cylinder or a sheet held in the passage gap. Signal switch is provided in the bracket and is activated by a checking element which is movably mounted to the bracket and engaged with either the carrier or the retaining member. The switch changes state when a selected relative position is established between the retaining member and the contact surface of the bracket. A circuit is connected to the switch for indicating its change in state. The selected position is chosen for establishing the correct passage gap for a sheet of paper to be fed.

REFERENCES:
patent: 2670954 (1954-03-01), Bach
patent: 3593989 (1971-07-01), Crittenden
patent: 4132402 (1979-01-01), Morrison
patent: 4527793 (1985-07-01), Bottcher

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