Cassette type feed apparatus

Details Cassette type feed apparatus Cassette type feed apparatus

1980-03-03

1981-12-29

Schacher, Richard A.

Sheet feeding or delivering

Feeding

Separators

271127, 271160, B65H 330

Patent

active

043078788

ABSTRACT:
A paper feed mechanism employing interchangeable cassettes having liftable paper stack support plates and containing different size paper sheets includes a feed roll engaging the uppermost sheet of an operatively positioned cassette, a lifting member separably engaging the support plate and a spring system biasing the lifting member and adjustable under the control of an indexing member on the operative cassette to adjust the bias in accordance with the paper size so that the pressure of the feed roll in the uppermost sheet is constant and independent of paper size. The spring system may include a first spring which is operable with all sizes of paper sheet and a second spring which is enabled only when the cassette contains large sheets and biases the lifting member with the first spring.

REFERENCES:
patent: 4007925 (1977-02-01), De Ryke
patent: 4221375 (1980-09-01), Morrison

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