X-Rite iCPlate2, Руководство пользователя

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iCPlate2
EN
3
iCPlate2
3•Operation
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3.6.7.3 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%.
3.6.7.4 Screen angle
Hold the iCPlate2 parallel to the edge of the plate to get a correct
value of the screen angle in degrees.
Important: The screen angle is not shown for FM screening and for middle tones,
especially for chain dots in AM screening. In a regular screen, the screen angle
will always be shown if the dot area has closed dots (highlights and shadows).
3.6.7.5 Visual Coverage
The visual coverage is a ‘density’ measurement, which is not
compatible with any current density standard and can only be used
for comparative analysis. For proper density measurements, we
recommend using a X-Rite Densitometer conforming to
standards.
For the “Visual Coverage” value, a zeroing on the medium is
needed. The zeroing is done by a measurement on the medium
(e.g. plate ground).