Adjust the Movable Sensor for Black Marks or Notches
Adjust the Movable Sensor for Black Marks or Notches
The sensor light and its black-mark detector are situated next to each other under the sensor cover.
Black mark sensing looks for and detects 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 to the sensor’s detector.
Position the movable sensor’s alignment arrow to the middle of the black mark or notch in the underside of the media.
The sensor position should be aligned 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 ±1 mm (due to media variations and edge damage due to handling). Notches cut into the side of the media can also become damaged.
