Typewriting machines – Having power-driven operator for plural functions
Patent
1988-09-28
1990-01-16
Wiecking, David A.
Typewriting machines
Having power-driven operator for plural functions
400 55, 4001442, 400212, B41J 130
Patent
active
048939501
ABSTRACT:
A serial impact printer and including a single cam member for properly establishing and maintaining the throat gap distance between a character imprinting surface and the platen at a print point and for raising and lowering a selected ribbon, of a composite marking correcting ribbon pack assembly, to and from the print point. A short throat gap distance is needed for commercially acceptable printing speeds in this hammer mass printer, and is needed for high quality printing; conversely, a long throat gap distance is needed for print point visibility at all other times. The cam member has plural camming surfaces which coordinate ribbon position with throat gap distance.
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Frankhuizen Michiel
Gabor Andrew
Jagger Brian E.
Ragen Robert A.
Weller Ivor
Abend Serge
Wiecking David A.
Xerox Corporation
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