Typewriting machines – Having power-driven operator for plural functions
Patent
1995-01-17
1998-10-13
Wiecking, David A.
Typewriting machines
Having power-driven operator for plural functions
347103, 400187, 400568, 400624, B41J 2334
Patent
active
058202757
ABSTRACT:
A process motor (82) provides bidirectional motive force to a printer (50) drive train (80) that selectively engages with multiple self-homing printing functions. A print head (52) is tiltable to a maintenance position and a transfer roller (64) is loadable against a transfer drum (54) by respective missing tooth gear (96, 160) latching mechanisms. A print media pick roller (122) and transfer drum maintaining devices (70, 72) are actuated by spring-wrap clutches (114, 236) that are protected from reverse rotation by a one-way clutch (106). Print media transport rollers (140, 142) are selectively engaged with the one-way clutch by an electro-mechanical clutch (128). A picked and transported print medium (56) receives an ink image from the transfer drum and is stripped therefrom by stripper fingers (66) and directed into media exit rollers (212, 220) for delivery to a media output tray (68). The stripper fingers and exit rollers are actuated sequentially by cams (180, 182) that are slaved to the transfer roller loading function.
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Chambers Richard G.
Crawford Timothy L.
Hult Nathan E.
Jones Michael E.
Pong William Y.
D'Alessandro Ralph
Preiss Richard B.
Tektronix Inc.
Wiecking David A.
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