Dot printing apparatus

Details Dot printing apparatus Dot printing apparatus

1980-05-07

1982-01-26

Sewell, Paul T.

Printing

Selective or progressive

Bed and platen machines

400121, B41J 308, B41J 312

Patent

active

043122698

ABSTRACT:
A printing apparatus for printing dots on a printing web comprises: a printer body frame; a single rotational drive motor for producing drive rotational force; rotational force transmission for transmitting the rotational force; a spring-biased link rotatable around a rotary shaft supported by the printer body frame; printing web feeding device; a printing drum having helical printing projections thereon, disposed so as to face the printing web, and supplied with the rotational force through the transmission at all times, the drum being rotatably mounted on the link; and an interlock including a transmission gear engaging with the drum and a ratchet gear engageable with a ratchet pawl pivotable in response to a solenoid to thereby achieve the printing shot by use of the single rotational drive motor when the solenoid is energized.

REFERENCES:
patent: 1520089 (1924-12-01), Scherbius
patent: 1971859 (1934-08-01), Knutsen
patent: 2175530 (1939-10-01), Knutsen
patent: 2799221 (1957-07-01), Olivetti
patent: 2945091 (1960-07-01), Canepa
patent: 3647356 (1972-03-01), Feder
patent: 3896919 (1975-07-01), Hutley
patent: 3973488 (1976-08-01), Mielke
patent: 4138942 (1979-02-01), Hutley

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