Daisy type print wheel apparatus

Details Daisy type print wheel apparatus Daisy type print wheel apparatus

1977-05-11

1978-12-05

Sewell, Paul T.

Typewriting machines

Including type-set-assemblage mounted on carrier and...

Including type-faces movable relative to type-face-carrier

400320, B41J 130

Patent

active

041283465

ABSTRACT:
Printing apparatus uses a daisy type print wheel which is continuously driven through a magnetic clutch arrangement. Characters are selected by actuation of either an electromagnetic brake acting on the print wheel or a toothed character selector acting on the spokes of the print wheel. When a character is selected and the print wheel is stopped, rotation of the motor continues because of the slippage of the magnetic clutch. Other features of the invention include a fast recovery time for the hammer because of its constant rate of actuation, a change in spacing by varying this constant rate and also an improved carriage scan technique which provides for fast return.

REFERENCES:
patent: 2929477 (1960-03-01), Rodriguez et al.
patent: 3227258 (1966-01-01), Pannier et al.
patent: 3384216 (1968-05-01), Thayer
patent: 3677386 (1972-07-01), Herterich et al.
patent: 3908809 (1975-09-01), Beattie
patent: 3977317 (1976-08-01), Delligatti
patent: 4026403 (1977-05-01), Inose et al.
IBM Tech. Disc. Bulletin, by P. Gmeiner, vol. 4, No. 1, Jun. 1961, pp. 8-9.
IBM Tech. Disc. Bulletin, by D. J. Wanek, vol. 15, No. 10, Mar. 1973, pp. 3227-3228.
IBM Tech. Disc. Bulletin, by K. V. Bostwich et al., vol. 8, No. 12, May 1966, p. 1822.

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