Typewriting machines – Typing by other than type-face or type-die – Character formation by impact
Patent
1989-09-25
1991-05-14
Crowder, Clifford D.
Typewriting machines
Typing by other than type-face or type-die
Character formation by impact
400127, 137883, B41J 222
Patent
active
050151061
ABSTRACT:
Apparatus for simultaneously forming one or more lines of multi-character messages on the surface of solid material which employs an array of marker pins which are moved by a carriage along a singular plane locus of movement defining a sequence of rows corresponding with a pixel matrix. The locus includes a retrace feature for each row or transverse movement which enhances the quality of character formation. An actuator assembly develops the locus of movement and, in turn, is driven by facing cam wheels which, in turn, are powered from an electric motor. A manifold which receives pneumatic pulses from arrays of conduits is coupled to the carriage and a marker head assembly, in turn, is removably coupled to the manifold. An array of solenoid actuated valves is coupled to the tubing arrays and to a pneumatic source which may be remotely positioned from the manifold.
REFERENCES:
patent: 4089262 (1978-05-01), Sopora
patent: 4379427 (1983-04-01), Middel et al.
patent: 4506999 (1985-03-01), Robertson
patent: 4591279 (1986-05-01), Speicher
patent: 4780009 (1988-10-01), Crick
patent: 4808018 (1989-02-01), Robertson et al.
Cyphert David L.
Cyphert Thomas E.
Muscarella Joseph F.
Robertson John A.
Crowder Clifford D.
Telesis Controls Corporation
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