User guide

X-Rite eXact™ Instrument
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BestMatch Function Setting
Tap the BestMatch button and set the type of substrate that is used for BestMatch measurements.
Options are: Uncoated and Coated.
BestMatch Measurement
A BestMatch measurement displays the color difference of a sample to a standard with and
without BestMatch corrections applied.
1. Select BestMatch function.
2. Measure paper.
3. Tap the Measure Standard icon
or tap the Standard icon to access the screen where
a standard is measured or selected from the library.
4. Measure the standard, use the last reading, or select from the Pantone library.
5. Tap the Back icon to return to the measurement screen.
OR
6. Measure the sample for comparison.
7. View measurement results.
Left Screen Side (Current)
The first value is the current Delta E of the sample to the current standard. The lower number
indicates the density response and value of the solid ink being measured. An arrow indicates
which direction the density should be adjusted (see right side).
Coated or Uncoated appear in the lower left corner depending on the function settings selected for
BestMatch. This affects the formula on how the corrections are estimated. It should be set based
on the substrate (paper type) being measured.
Right Screen Side (BestMatch)
The first value represents the estimated color difference after the suggested adjustment is made.
The second value is the suggested density adjustment, positive or negative. This value is useful
for offset printers that adjust the ink by thickness. For other type of presses (ie. Flexo), ink adjust
are done by concentration (third value).
NOTE: The maximum permitted color difference ∆E is determined for each print job. If the value
of ∆E best is greater than the specified ∆E, changing the density will not achieve the desired color
quality.