Summa D120 - OPOS (Optical POSitioning); OPOS System Introduction; Basic OPOS Operation Steps

Contour cutting 3-1
3
OPOS (Optical POSitioning)
Introduction
3.1
Contour cutting is made possible by the highly accurate SummaCut Optical Positioning
System (OPOS).
The OPOS sensor, which is mounted underneath 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 marks and rises again after
completing this task. The improved sensor can read virtually any kind of media-mark
combination.
Basic OPOS operation
3.2
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:
 Create a graphic and cut lines.
 Print the graphic (laminate, if necessary).
 Load the media and register the marks.
 Cut the graphic.
To ensure 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 mark colour and the media colour.
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 (section 0
) for extra tips on defining and cutting
contours.