Thermal recording apparatus

Details Thermal recording apparatus Thermal recording apparatus

1993-03-30

1995-03-28

Reinhart, Mark J.

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

355205, B41J 2435

Patent

active

054021537

ABSTRACT:
A thermal recording apparatus capable of preventing in advance a thermo-sensitive recording medium or the apparatus from being excessively heated when the apparatus is defective in operation. When a failure in operation of a polygon mirror is detected by a scanning sensor, when a failure in operation of a motor is detected by an encoder or when jamming or the like of a thermo-sensitive recording medium S is detected by a pair of feed sensors, a controller outputs a malfunction signal to a solenoid. The solenoid, activated at all times, is de-activated by the malfunction signal thereby to cause the shielding plate to cut off a laser beam L. Thus, even if a failure in operation of the thermal recording apparatus is developed, the thermo-sensitive recording medium S and the thermal recording apparatus can be prevented from being excessively heated with the laser beam L.

REFERENCES:
patent: 5021827 (1991-06-01), Komiya et al.

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