Offset stacker

Details Offset stacker Offset stacker

1994-11-25

1997-04-08

Merritt, Karen B.

Sheet feeding or delivering

Delivering

To receiver for pack of sheets

4147912, 414926, 271217, B65H 3100

Patent

active

056180357

ABSTRACT:
A self-contained offset stacker tray assembly is operable in conjunction with the sheet output of a host printer or copier to receive sheets from the host machine and deposit the sheets in offset sets. The assembly includes a supporting base for a frame structure reciprocable transversely of the direction of sheet infeed from the host and containing a receiver tray, infeed rolls to supply sheets to the trays, a rotary cam mechanism for shifting the frame assembly relative to the output from the host machine and the receiver tray being vertically movable within the frame structure and biased upwardly by counter balancing springs to be moved downwardly as the weight of the sheets in the tray increases.

REFERENCES:
patent: 4382592 (1983-05-01), Harping et al.
patent: 4687193 (1987-08-01), Scarabino et al.
patent: 4865308 (1989-09-01), Krasik
patent: 4981293 (1991-01-01), Yamashita et al.
patent: 4989853 (1991-02-01), Matysek et al.
patent: 5007625 (1991-04-01), Kremers et al.
patent: 5037081 (1991-08-01), Engelhardt et al.
patent: 5056774 (1991-10-01), Kubota et al.
patent: 5350169 (1994-09-01), Hiroi et al.
IBM Technical Disclosure Bulletin vol. 17, No. 8, Jan., 1975.

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