Operating Manual
Operating Manual
Operating Manual
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24<br />
Application notes<br />
24.1 Recommended instrument settings<br />
Generally the Pol filter leads to good formulating results on a variety of different substrates (glossy,<br />
matt, absorbent, non-absorbent), because surface effects such as bronzing, the wet/dry problem<br />
and the effect of optical brighteners on measurement are greatly reduced.<br />
If the target color and the reproduced color have different surface structures, or if covering power<br />
has to be taken into account when formulating with scattering pigments (e.g. opaque white), then<br />
the Pol filter can produce unsatisfactory results.<br />
To support a consistent workflow, (incl. creative and color management sectors), the No filter<br />
should be used, because all the measuring instruments in the workflow are equipped with No<br />
filters.<br />
The D65 filter should not be used during formulation, because it can lead to incorrect results on<br />
substrates with optical brighteners. It should only be used if the aim is to test the effect of optical<br />
brighteners in substrates.<br />
The UV Cut filter can be used for formulation, if, contrary to all recommendations, assortments<br />
are applied to substrates with a high proportion of optical brighteners. In the preliminary printing<br />
stage, the UV Cut filter can be used when measuring test charts printed on substrates with a high<br />
proportion of optical brighteners. This can improve the subsequent calculation of ICC profiles.<br />
Apart from the characteristics of the various filters listed above, the following aspects are very<br />
important and must be taken into account:<br />
In Ink Formulation each recipe is associated with a particular assortment and therefore also with<br />
the filter which was used when the assortment was entered. This shows the importance of using<br />
the correct filter right from the start.<br />
It can therefore be advantageous to measure newly entered assortments with more than one filter<br />
setting. That increases the flexibility of the ink manufacturer to respond to his end customers‘<br />
differing filter requirements, especially if they are already using other assortments. This also<br />
prevents problems with filter handling (SPM and Spectrolino: manual filter change!)<br />
24 • Application notes 181
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