Typewriting machines – Typing by other than type-face or type-die – Thermal
Patent
1978-12-29
1981-10-27
Wright, Jr., Ernest T.
Typewriting machines
Typing by other than type-face or type-die
Thermal
400 48, 400 58, 400621, 400619, 400701, 400708, 346 76PH, B41J 320
Patent
active
042970393
ABSTRACT:
A thermal printer provides first and second sub-frames pivotally supported on a main frame to provide access to a dot resistance heater for cleaning and easy removal of the respective structures. Each structure is releasably fixed in operating position in which a resilient drive roller on the second sub-frame presses the thermally sensitive paper against the printer head. The same roller is driven by a motor on the second sub-frame and moves the paper along the paper path by friction drive. The paper moves between a fixed and rotatable knife on the second sub-frame actuated by crank and linkage connection to the core of a solenoid whose winding is fixed on the main frame. A curved guide plate directs the paper toward an opening and into a surface which imposes an S curve on the paper. The S curve allows enlargement of a storage loop in the paper in case the opening is blocked. su
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Autotote, Ltd.
Dorfman John C.
Wright, Jr. Ernest T.
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