A method for maintaining the uniformity of colour measurement devices

摘要

A method for maintaining substantial reliability of color measurements obtained by a number of color measuring instruments includes by measuring color values of sets of working colors standards on the same instrument to determine calibration values. The working sets are provided to remote locations for use on remote instruments where they are measured on the remote instruments to obtain color measurements which are transmitted to the master lab. The measurements from the remote instruments are compared with the calibration values obtained on the master instrument to generate profiles which are provided to the remote labs. The profiles are applied to measured values for the set of working color standards to obtain corrected values. These values are transmitted to the master lab and analyzed to determine compliance with specifications.