Printing – Selective or progressive – Bed and platen machines
Patent
1976-05-12
1979-11-27
Coven, Edward M.
Printing
Selective or progressive
Bed and platen machines
101 9322, 101110, B41J 144
Patent
active
041754883
ABSTRACT:
A printer having a print command circuit adapted to provide a print command signal, to thereby begin each print cycle is provided. The printer further includes a character ring having print characters circumferentially positioned therearound, each print character being selectively positioned by rotating the character ring from a rest position to a print position in response to the print command signal. The improvement comprises a single position detection circuit for generating character selection timing pulses representative of each rotational position of the character ring and being further adapted to produce return timing pulses in response to the opposite rotation of the character ring when same is returned to its rest position. Improved circuitry is provided for sensing the last pulse of said return timing pulses, utilizing same to supply a print-off pulse to the print command circuit to indicate the completion of the print cycle.
REFERENCES:
patent: 3148616 (1964-09-01), Miesiak
patent: 3673574 (1971-10-01), Longcoy
patent: 3731622 (1973-05-01), Baranoff
patent: 3838638 (1974-10-01), Clary
Coven Edward M.
Kabushiki Kaisha Suwa Seikosha
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