Printing – Selective or progressive – Bed and platen machines
Patent
1976-06-17
1978-09-12
Coven, Edward M.
Printing
Selective or progressive
Bed and platen machines
74 30, 400323, B41J 904
Patent
active
041128400
ABSTRACT:
A driving device for a print head including printing mechanism actuated at predetermined times for marking characters on a data carrier carried by a print roll, comprising motion converting mechanism comprising a housing including an interior continuous gear path, said housing being coupled to said print head; said gear path comprising a pair of opposing straight path portions substantially parallel to the axis of said print roll; said straight path portions being joined, at each end thereof, by respective curved path portions; rotatable pinion mechanism in continual engagement with said gear path; said pinion mechanism being coupled to the shaft of a motor driving mechanism; said straight path portions being mutually separated by a distance greater than the outside diameter of said pinion mechanism and said curved path portions being mutually separated by a distance substantially greater than the distance separating said straight path portions; rotary motion of said pinion mechanism being converted to reciprocating movement of said housing and corresponding movement of said print head; said housing and said print head being coupled by guide mechanism; said guide mechanism permitting movement of said housing and said print head in a direction substantially parallel to the axis of said print roll whenever said pinion engages said straight path portions and said guide mechanism allowing movement of said housing and said print head in a direction substantially perpendicular to the axis of said print roll whenever said pinion engages said curved path portions; whereby the tendency of said housing to rotate about the axis of said pinion, whenever said pinion engages said curved path portions, is eliminated by said guide mechanism.
REFERENCES:
patent: 850930 (1907-04-01), Hannah
patent: 1623490 (1927-04-01), Nitchie
patent: 1784842 (1930-12-01), Lemons
patent: 2821861 (1958-02-01), Dunn
patent: 3331317 (1967-07-01), Helteix
patent: 3476044 (1969-11-01), Hassermann
patent: 3826915 (1974-07-01), Giolitti et al.
patent: 3966035 (1976-06-01), Erickson
Coven Edward M.
Friedman Norman
Muckelroy William L.
Rotella Robert F.
Svenska Dataregister Aktiebolag
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