Basic Operation 3-1
3 OPOS (Optical POSitioning)
3.1 Introduction
Contour cutting is made possible by the SummaCut highly accurate Optical
Positioning System (OPOS).
The OPOS sensor, which is mounted unerneath the tool carriage, registers printed
squares that are placed around the graphic. Because of this registration process,
OPOS can determine the exact position of the printed graphic.
The sensor drops automatically while registering the markers and rises again after
completing this task. The improved sensor can read virtually any kind of media-marker
combination.
3.2 Basic OPOS operation
Many versions of cutting software have the built-in capability to make contour cutting
user-friendly and automatic. Please refer to the user’s manual that came with your
software or contact your software dealer for specifics.
In general, contour cutting includes the following steps:
¾ Create a graphic.
¾ Print the graphic (laminate if necessary).
¾ Load the graphic into the cutter.
¾ Set the necessary parameters for the OPOS sensor.
¾ Load the media and register the markers.
¾ Cut the graphic.
To ensure that OPOS is working accurately, two calibrations are necessary: the
OPOS calibration and the media calibration. The OPOS calibration is the calibration of
the distance between the knife tip and the sensor. The media calibration “teaches” the
cutter the reflection levels of the marker color and the media color.
NOTE: Although the OPOS sensor has been calibrated in the factory, Summa
recommends doing a test to determine how well the factory-set parameters work with
the materials you are using. If the accuracy is not what is expected, then do the OPOS
calibration. Also refer to the section about detailed OPOS operation (3.3) for extra tips
on defining and cutting contours.
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