The black mark sensor or also know as reflective sensor detects a label with a black mark. This allows the reflective/black mark sensor to detect the mark and feed the media to the correct position. Use liner paper that meets any of these conditions.
- Paper with a Black Mark from the Left End to the Right End of the label
- Paper with a Black Mark on the Detection Range of the Reflective/Black Mark Sensor
Although the detection range of the reflective/black mark sensor differs depending on the printer model being used, the black mark in the image above is long enough to cover the detection range of the sensor regardless of models.
An example of a paper label with a black mark on the detection range of the sensor can be seen in the image below.