Device for intermittently driving printing rings in a printer

Details Device for intermittently driving printing rings in a printer Device for intermittently driving printing rings in a printer

1977-08-31

1979-12-04

Coven, Edward M.

Printing

Selective or progressive

Bed and platen machines

110111, 101 93, 101 22, 101 99, B41J 122

Patent

active

041765990

ABSTRACT:
The printer has a plurality of printing rings each rotatably supported by a swingable layer pivoted about a pivot axis so as to be swung in an arcuate path around the pivot axis while it is rotated by a driving source about its own axis so that the printing rings are selectively swung toward and against a platen upon receipt of printing character selection command from the control circuit of the printer so as to print onto a paper held therebetween when the selected one of the characters on the respective printing ring is brought to a position for the printing during the rotation thereof. The driving source for the rotation of the printing rings is controlled by pulses so that the rotation about the axis of the respective printing ring is rendered to be intermittent and the swinging of the respective swingable lever for the printing operation is effected during the time the respective printing ring is held stationary in its intermittent rotation thereby insuring exact printing operation of the selected characters.

REFERENCES:
patent: 3654860 (1972-04-01), Speicher et al.
patent: 3731622 (1973-05-01), Baoanoff
patent: 3738264 (1973-06-01), Sobottka et al.
patent: 3771442 (1973-11-01), Ditman
patent: 3793951 (1974-02-01), Denley
patent: 3838638 (1974-10-01), Clary
patent: 3865030 (1975-02-01), Chida et al.
patent: 3889593 (1975-06-01), McVey
patent: 3991672 (1976-11-01), Keith et al.

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