Typewriting machines – Including type-set-assemblage mounted on carrier and... – Imprint by movement of record-medium against type-face
Patent
1988-06-14
1989-09-19
Burr, Edgar S.
Typewriting machines
Including type-set-assemblage mounted on carrier and...
Imprint by movement of record-medium against type-face
4001442, 400356, 400174, 4003543, 101 9331, 101 9348, B41J 936
Patent
active
048675849
ABSTRACT:
An impact mechanism for use in an impact printer, to deliver a printing force to drive a character element against a platen by means of a print tip movable toward and away from the platen. A rockable bail bar having an axis of rotation substantially parallel to the axis of the platen is constrained to limited angular movement toward and away from the platen by a prime mover connected to the bail bar. A push rod interconnects the print tip and the bail bar for delivering impact forces to the platen as the bail bar is moved toward the platen. The push rod is normally of a first length and rigid delivering impact forces to the platen and is collapsible to a second length, shorter than the first length, for drawing the print tip away from the platen so as to allow the character element to be removed. A collapsing mechanism is provided to convert the push rod from the first length to the second length.
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patent: 4678355 (1987-07-01), Gabor et al.
patent: 4681469 (1987-07-01), Gabor
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Jagger Brian E.
Namen Tjado V.
Savage James G.
Abend Serge
Burr Edgar S.
McDaniel James R.
Xerox Corporation
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