Wear compensation device of a label printer
AssigneeEspera-Werke GmbH
InventorGuillaume De Miranda
Life of this patent
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Abstract
The invention relates to a wear compensation device (1) of a label printer (2) which prints labels (3) by means of thermal printing, having a thermal head (4) which has a thermal strip (5) with a plurality of heating resistors (6), having a label feeding device (8) which feeds the respective label (3) to the active region (9) of the heating resistors (6), and having a control device (10) which actuates the thermal head (4) for printing the respective label (3). It is proposed that the control device (10) is configured to monitor the electric resistance (R) of one or more of the heating resistors (6) and, if a predefined threshold value (R1) for the electric resistance (R) is exceeded, to increase the energization duration of the respective heating resistor (6) during a printing operation.
Claims20
A wear compensation device for a label printer that includes a thermal head having a thermal strip provided with a plurality of heating resistors and a label feed device for feeding respective labels to an active region of the plurality of heating resistors and that prints labels by means of thermal printing in a printing operation, the wear compensation device comprising:
- a control device for activating the thermal head for printing the respective labels;
- wherein the control device is configured to monitor electric resistance of one or more of the plurality of heating resistors and, when it is determined that a predetermined threshold value for the electric resistance for a respective one or more of the plurality of heating resistors is exceeded, to increase energization duration for the respective one or more of the plurality of heating resistors during the printing operation.
Dependencies are inferred from the claim text.