ZD100TA Thermal Transfer Desktop Printer User Guide

Adjusting the Movable Sensor for Black Marks or Notches

The movable sensor is a dual-function sensor that provides both transmissive (it sees through media) and reflective media sensing. The printer can use only one of these sensing methods at any given time. When printing on black mark media, the movable sensor must be adjusted to detect the marks or notches on the media.

Black-mark sensing identifies non-reflective surfaces, such as black marks, black lines, notches, or holes on the back of the media. These surfaces 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 positioned next to each other under the sensor cover.

The sensor has a single sensor position for web/gap media, which is its default position.

The design of the 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 the black marks or notches, not to the center of the media roll. This is to avoid using the web/gap sensing array.

Position the movable sensor’s alignment arrow to the middle of the black mark or notch on the underside of the media.

Verify that you have set the sensor alignment as far from the edge of the media as possible, but where 100% of the sensor window is covered by the mark.

There are 3" and 4" marks.

When printing, the media can shift from side to side ±1 mm due to media variations and edge damage due to handling. Additionally, notches cut into the side of the media may also become damaged.