Paper feeding and ejecting device for a printing apparatus

Details Paper feeding and ejecting device for a printing apparatus Paper feeding and ejecting device for a printing apparatus

1985-10-24

1987-07-14

Wright, Jr., Ernest T.

Typewriting machines

Sheet or web

For feeding sheet from stack or pack holder

400120, 400208, 4005272, 400528, 400629, 400636, 400708, 271 3, 271119, 271902, B41J 1158

Patent

active

046799532

ABSTRACT:
In a paper feeding and ejecting device for a printing apparatus, a sheet of paper is fed by a paper feeding roller from the top of a stack of paper sheets in a magazine through a feeding guide to a gripping assembly on the peripheral surface of a platen which is rotated in one direction during printing and in the opposite direction during ejecting of a printed sheet through an ejecting guide to ejecting rollers. The feeding roller and the ejecting rollers are driven by a single reversible drive motor at suitable times during the operating cycle. The feeding guide and the ejecting guide are separated from each other at the platen so that the feeding of a sheet to the platen will not interfere with the ejecting of a printed sheet. At the completion of each operating cycle, the feeding roller is accurately located at a standby position without requiring the use of a control sensor therefor.

REFERENCES:
patent: 2707545 (1955-05-01), Dreher et al.
patent: 3908981 (1975-09-01), Naroff
patent: 3966187 (1976-06-01), Beduchaud et al.
patent: 4089402 (1978-05-01), Hyland et al.
patent: 4437656 (1984-03-01), Onoda et al.
patent: 4438915 (1984-03-01), Akamatsu et al.
patent: 4489931 (1984-12-01), Costa et al.
patent: 4543004 (1985-09-01), Brandenburg et al.
patent: 4579328 (1986-04-01), Hagihara et al.
IBM Technical Disclosure Bulletin, "Document Separator", Sobey, vol. 26, No. 4, Sep. 1983, pp. 1770-1771.
IBM Technical Disclosure Bulletin, "Paper-Aligning Apparatus", Hunt, vol. 27, No. 1A, Jun. 1984, pp. 216-217.
IBM Technical Disclosure Bulletin, "Feed Extender for Sheet Feeder", Dunning, vol. 27, No. 3, Aug. 1984, pp. 1597-1598.

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