Inked ribbon feed arrangement

Details Inked ribbon feed arrangement Inked ribbon feed arrangement

1974-12-10

1976-06-29

Pinkham, Richard C.

Textiles: fiber preparation

197160, B41J 1900

Patent

active

039660362

ABSTRACT:
An inked ribbon of a high-speed printer for office machines is wound on two spools connected each one with a corresponding electric motor. The ribbon is transferred stroke by stroke from the feed spool to the take-up spool with a substantially constant tensioning force. To this end an oscillating lever is disposed between the two spools and, cooperating with the ribbon, forms a loop thereof under the action of a tensioning spring. The oscillating lever in correspondence of a minimum and of a maximum of the ribbon loop cooperates with a pair of microswitches which alternately stop and actuate the electric motors in manner that the ribbon is transferred alternately from the feed spool to the loop and from the loop to the take-up spool under the action of the tensioning spring. A changeover device alternates the function of the two spools when the ribbon is fully wound on the take-up spool.

REFERENCES:
patent: 2964157 (1960-12-01), Knight
patent: 3236353 (1966-02-01), MacNeill et al.
patent: 3302766 (1967-02-01), Page
patent: 3340989 (1967-09-01), Busch
patent: 3354822 (1967-11-01), Dollot
patent: 3442366 (1969-05-01), Spears
patent: 3627219 (1971-12-01), Hanson et al.
patent: 3632052 (1972-01-01), Read
patent: 3677176 (1972-07-01), Foley et al.
"Ribbon Feed Mechanism;" IBM Technical Disclosure Bulletin; vol. 2, No. 6, Apr. 1960, pp. 18 and 19.

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