Colormetrics gives the necessary objective measurements wherever color tones are produced by mixing or printing process inks, according to predetermined targets. Visual judgement is supplemented by colormetric coefficients. Therefore, color tolerances can be determined by numerical values instead of by visual comparison with the target sheets. The difficulty of expressing all possible variances - color tone, saturation and lightness - in target sheets continuously within a tolerance range is eliminated. Subjective guesswork is replaced by measurements which can be repeated at any time. Using these measurements, the expert can make exact corrections when mixing and printing inks.
The colorimeters measures according to the tristimulus method and meets the DIN 5033 and DIN 6174 standards. It also meets the published recommendations of CIE and other international standards. It measures and evaluates all current colormetric coefficients and their differences.
For the instrument calibration a white standard is used whose tristimulus values are known for the illuminants D 65 and C and for the viewing angles 10° and 2°. The tristimulus values of the white standard are stored in all densitometers and colormetrics. A simple calibration measurement on the white standard is sufficient if the calibration is to be renewed before beginning a series of measurements.
The colormetric works without a cable. It is equipped with rechargeable NiCd-batteries. Even the recording of the measurements is done cablefree. Every colorimeter has a built-in infrared transmitter. Just the press of a button, and all values and characteristics in the display are transferred via the infrared receiver or an IBM-compatible personal computer.