Impact printer

Details Impact printer Impact printer

1989-08-16

1991-05-21

Wiecking, David A.

Typewriting machines

Safety switch or condition-responsive-cutoff switch for...

400 58, 400124, B41J 1108

Patent

active

050170279

ABSTRACT:
An impact printer having a platen, an impact printing member such as a printing wire, a driver such as a driving coil for driving the impact member, a controller for controlling the driver and a temperature detector. Before printing data is printed, the temperature detector compares the temperature of the printer to a set point. If the temperature is too low, a warm-up signal is provided and the driver displaces the printing member to such an extent that printing does not occur. The warm-up signal can also cause the gap between the platen and the printing member to widen to such an extent that printing cannot occur.

REFERENCES:
patent: 4579467 (1986-04-01), Furukawa
patent: 4705412 (1987-11-01), Matsumoto
patent: 4706561 (1987-11-01), Greer

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