Within-line color change printing

Details Within-line color change printing Within-line color change printing

1981-03-31

1983-07-05

Sewell, Paul T.

Typewriting machines

Including interposed inking device for record-medium

Including mechanism for shifting ribbon laterally at...

4002161, B41J 3514, B41J 3516

Patent

active

043915400

ABSTRACT:
In the printer disclosed herein, shifting of a multi-color ribbon carried on a movable carriage is effected by differentially adjusting the free length of a cable extending parallel to the carriage motion. The cable passes over at least a pair of pulleys on the carriage, at least one of the pulleys being movable with respect to the other in response to changes in the free length of the cable. Solenoids are provided at each end of the cable for controllably changing the free length of the cable, the amount of change being different for the two solenoids so that four different combinations of free length are available. A ribbon shifting mechanism is coupled to the movable pulley so that the multi-color ribbon is shifted in accordance with the free length of the cable.

REFERENCES:
patent: 629438 (1899-07-01), Fay
patent: 818745 (1906-04-01), Cooke
patent: 1961455 (1934-06-01), Robinson
patent: 4022313 (1977-05-01), Lau et al.
patent: 4033446 (1977-07-01), Taubert
patent: 4073371 (1978-02-01), Prager
patent: 4088218 (1978-05-01), Depew
patent: 4111293 (1978-09-01), Kockler et al.
patent: 4236839 (1980-12-01), Mueller
patent: 4280767 (1981-07-01), Heath

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