27/40
3.5.7 Measurement Values
3.5.7.1 Dot area
This value represents the area coverage of the measured patch.
With the image analysis algorithm, dust and image errors are
eliminated.
3.5.7.2 Screen ruling
Depending on the settings, the screen ruling is displayed either in
Lines/inch or Lines/cm.
Important:
The screen ruling is not shown for FM screening and for middle
tones, especially for chain dots in AM screening. In a regular screen, the
screen ruling will always be shown if the dot area has closed dots
(highlights and shadows).
3.5.7.3 Dot diameter
The diameter of the dots is displayed in µm. The calculation is based
on a circular dot of the same surface area.
Important:
The dot diameter is not shown for middle tones, especially for chain
dots in AM screening. In a regular screen, the dot diameter will always be
shown if the dot area has closed dots (highlights and shadows).
The image analysis algorithms make it possible to display the dot diameter for
stochastic screen when the dot area is smaller than 10%.
3.5.7.4 Screen angle
Summary of Contents for Ultra Dottie II
Page 1: ...CTP Calibrator Operating Manual THE QUALITY CONTROL COMPANY Version 1 03 ...
Page 2: ...1 40 ...
Page 41: ...40 40 of ...