Adjusting the Movable Sensor for Black Marks or Notches
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Adjusting the Movable Sensor for Black Marks or Notches
The printer sensing for black marks and notches uses reflective sensing. Reflective (area) sensing does not work in the default sensing position.
The black mark sensing looks for non-reflective surfaces such as black marks, black lines, notches, or holes on the back of the media which do not reflect the sensor’s near-infrared light beam back to the sensor’s detector. The sensor light and its black mark detector are next to each other under the sensor cover.
Position the sensor alignment arrow to the middle of the black mark or notch in the underside of the media.
Sensor alignment should be set as far as possible from the edge of media but where 100% of the sensor window is covered by the mark.
When printing, the media can move from side to side ±1mm (due to media variations and edge damage due to handling). Notches cut into the side of the media can also become damaged by handling.
