36
Setup
Loading Roll Media
1/13/2016 ZD420 User’s Guide 212485-001 Rev. A
Using the Movable Sensor
The movable sensor is a dual function sensor. It provides transmissive (sees through media) and
reflective media sensing. The printer can use either sensing method, but not both at the same
time.
The movable sensor has a center array of sensors. This provides adjustable transmissive web
(gap) sensing to positions that match legacy Zebra
®
desktop printer sensor locations and
positions in between. This also provides for use of some non-standard media variations or
irregularly shaped media.
The movable sensor allows the printer to use media with black marks or notches (holes through
the media) on the back side of the media (or media liner). The sensor aligns to the middle of
black marks or notches not in the center of the media roll to avoid Web/Gap sensing array.
Adjusting the Movable Sensor for Black Marks or Notches
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 movable sensor’s 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.
To Next Page
Loading...
