Thermal printhead operation

Details Thermal printhead operation Thermal printhead operation

2005-01-25

2005-01-25

Feggins, K. (Department: 2853)

Incremental printing of symbolic information

Ink jet

Controller

Reexamination Certificate

active

06846055

ABSTRACT:
A method of operating a thermal printhead includes the steps of periodically determining a current value proportional to the resistance of printhead elements; providing a warning signal when the current value of any element exceeds a predetermined multiplier of the nominal value; and then modifying the operation of the printhead so that such element is energized only for the printing of a barcode within the printed area. An apparatus, especially a weighing apparatus, for carrying out such a method is also disclosed.

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