X-Rite IFM-O-U Specifications Page 20

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3 • Structure and function
19
Display “Opacity settings” or “white/black switch box”
(opacity module only)
This fi eld depends on the formulation setting for the covering power.
The opacity required is displayed in the cases transparent, opaque or
user-defi ned. In the case of Target color on white and black substrate
selection can be made between target color and recipe on white or target
color and recipe on black.
See Chapter 9 “Control of covering power”.
Display “calculated/measured”
Here the target color and the recipe are shown in color. On the right beside
the color fi elds can be seen the relevant Lab or LCh values.
If the substrates of the target color and the recipe differ in their surface
properties, e.g. the target color is uncoated (rough) and the recipe
coated (smooth), then, with certain instrument/filter combinations,
InkFormulation automatically adjusts the measurements taken by the
instrument (“Instrument“ symbol) to suit the visual perception by the
eye (“Visual“ symbol).
The symbol for the display mode which is selected is boxed in. By clicking
on the symbols in the color fi elds, the display mode can be changed at any
time. However, it is recommended that you formulate colors in “Visual“
mode, because in this mode InkFormulation automatically optimizes the
recipes as required for visual perception. For further explanations, see
Section 5.2.3 “Defi ning a target color“.
Warning box
The warning box always appears following a recipe calculation if any
setting has limited the achievable color space so much that the calculated
color has too great a color difference from the target color. Clicking the
warning box produces an Info window, which lists the settings which
have possibly resulted in this high color difference:
The large difference in hue can possibly be removed by less strict
demands. For this purpose the Setup button can be clicked. This produces
the Formulation settings window, where the required changes can be
made. After returning to the Info window, a new recipe calculation with
the modifi ed settings can be started by clicking Recalculate.
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