Method of controlling thermally controlling a thermal printing h

Details Method of controlling thermally controlling a thermal printing h Method of controlling thermally controlling a thermal printing h

1980-06-17

1982-05-18

Miller, Jr., George H.

Recorders

Thermal recording

219216, G01D 1510, H05B 102, G05D 2300

Patent

active

043307868

ABSTRACT:
A transistor causes a current to flow through a heat generating resistor in response to a picture signal and simultaneously, a capacitor coupled to the transistor is charged. When a charged voltage on the capacitor reaches a predetermined magnitude, the transistor stops the current to prevent the resistor from exceeding a predetermined magnitude and the capacitor begins to discharge. A plurality of resistors mentioned above are disposed in a row to form a thermally sensitive head which records a picture image on thermally sensitive paper as determined by the respective picture signals.

REFERENCES:
patent: 3725898 (1973-04-01), Canton
patent: 4113391 (1978-09-01), Minowa
patent: 4168421 (1979-09-01), Ito

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