X-Rite IFM-O-U Specifications Page 192

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191
25 • Application notes
Application notes
25.1 Recommended instrument settings
Generally the Pol fi lter leads to good formulating results on a variety of different substrates (glossy,
matt, absorbent, non-absorbent), because surface effects such as bronzing, the wet/dry problem
and the effect of optical brighteners on measurement are greatly reduced.
If the target color and the reproduced color have different surface structures, or if covering power
has to be taken into account when formulating with scattering pigments (e.g. opaque white), then
the Pol fi lter can produce unsatisfactory results.
To support a consistent workfl ow, (incl. creative and color management sectors), the No fi lter
should be used, because all the measuring instruments in the workfl ow are equipped with No
lters.
The D65 fi lter should not be used during formulation, because it can lead to incorrect results on
substrates with optical brighteners. It should only be used if the aim is to test the effect of optical
brighteners in substrates.
The UV Cut fi lter can be used for formulation, if, contrary to all recommendations, assortments
are applied to substrates with a high proportion of optical brighteners. In the preliminary printing
stage, the UV Cut fi lter can be used when measuring test charts printed on substrates with a high
proportion of optical brighteners. This can improve the subsequent calculation of ICC profi les.
Apart from the characteristics of the various fi lters listed above, the following aspects are very
important and must be taken into account:
In InkFormulation each recipe is associated with a particular assortment and therefore also with
the fi lter which was used when the assortment was entered. This shows the importance of using
the correct fi lter right from the start.
It can therefore be advantageous to measure newly entered assortments with more than one
lter setting. That increases the fl exibility of the ink manufacturer to respond to his end custom-
ers‘ differing fi lter requirements, especially if they are already using other assortments. This also
prevents problems with fi lter handling.
25
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