Thermal Label Sensing

Thermal label sensing via black marks, notches or gaps between each label. Labels need to move through a thermal printer and with the help from a gap sensor it can detect a notch, slot or line between each label that passes. Labels equipped with these capabilities create an adjustment to align the labels properly. Then the labels can be printed.

Gap Sensing – You may find labels with a slot cutout the sides or gap cutout in between labels. This creates a gap that the fixed sensor picks up and tells the printer when the next label is about to present itself. The gaps can range in sizes depending on the label size and printer sensor. You will need to calibrate the sensor if you need to adjust to a new liner. Adjustments will also need to be made if your label has a different contrast.

Black Mark Sensing – If your printer has a “reflective” sensor it will need to use labels with a black mark or line on the back of the label liner. Clear labels are a prime example when black marks, notches or sensing slots are absolutely necessary to print labels with little to no contrast.

  • Sensing Notch or Slot – Depending upon your printer having fixed or movable sensors. Sensing notches are cut out from the liner of the label and most of time do not require a larger gap. The size of the sensing slot or notch pretty much depends on the printer specifications. Each printer manufacturer has their own preferences for these settings.
sensing slot label

When it comes to thermal label sensing there are many ways to utilize its features.