Typewriting machines – Typing by other than type-face or type-die – Character formation by impact
Patent
1987-06-24
1989-02-28
Sewell, Paul T.
Typewriting machines
Typing by other than type-face or type-die
Character formation by impact
101 31, 400127, 400130, B41J 312, B41J 340
Patent
active
048080187
ABSTRACT:
Apparatus for forming multi-character messages on the surface of solid materials which employs an array of marker pins moved by a carriage in a manner defining an undulating locus of movement. This locus traces the matrix with which character fonts are defined by pixels formed by the marker pins as discrete indentations. The carriage and head containing the marker pin are pivotally driven by a cam to provide vertical movement and by a Geneva mechanism to provide horizontal movement. Pixel positions for the matrices are established by a timing disk and control over the pins is provided employing an interrupt approach. Each marking pin within the head assembly is capable of marking more than one complete character for a given transverse of the head between home and away limits.
REFERENCES:
patent: 3941051 (1976-03-01), Barrus
patent: 4006786 (1977-02-01), Speicher
patent: 4077336 (1978-03-01), Talvard
patent: 4089262 (1978-05-01), Sopora
patent: 4264219 (1981-04-01), Arai
patent: 4438692 (1984-03-01), Yanadori
patent: 4557191 (1985-12-01), Speicher
patent: 4591279 (1986-03-01), Speicher
Cyphert David L.
Robertson John A.
Sewell Paul T.
Telesis Controls Corporation
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