Thermal print head temperature control

Details Thermal print head temperature control Thermal print head temperature control

B - Operations, Transporting

41

J

314/41, 101/43

B41J 2/355 (2006.01) B41J 2/365 (2006.01) G01D 15/10 (2006.01)

Patent

CA 1326060

ABSTRACT OF THE DISCLOSURE An apparatus and method is disclosed for controlling the temperature of a thermal print head and individual dot elements thereon, thereby optimizing print quality and reducing the thermal and electrical stress on the thermal print head. Hysteresis control determines the amount of energy supplied to each dot element in the thermal print head. Peak temperature control determines the width of the pulses supplied to the dot elements on the thermal print head. Pre-heating control raises the temperature of each dot element when the dot element has been idle for a predetermined period. Substrate temperature control maintains the temperature of said thermal print head at a predetermined value.

612061

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