Color QC and Matching Blog

How to improve Inter-instrument Agreement with Instrument Profiling

Posted by Elaine Becker on Thu, Jul 16, 2009
So many color disputes arise these days because color instruments don't necessarily read the same.  Electronic color standards are widely used and shared within a supply chain and have many benefits, but if all of your instruments are not regularly monitored and are known to read the same, then problems can arise. 

Many users assume that since they do a daily calibration on their instrument, their readings are correct.  And if they are correct, then they must match every else's.  That's not usually the case.  Spectrophotometers from different suppliers may read color differently.  Even with the same model from the same supplier, significant differences can be found depending on the age of the instrument and how well it is maintained.

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Tags: Announcements, color tolerances, instrument profiling, inter-instrument agreement

COLOR TOLERANCES:

Posted by Mike Burns on Thu, Jul 16, 2009
 

One of the more frequent questions we hear from suppliers is:  What should my color tolerances be?  The simple answer equates to what the client will accept in color variation in all directions of color space versus the color standard the supplier needs to match.  The importance of the client providing representative color standards will be the subject of a future blog.

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Tags: Announcements, Product Information, Color difference, color tolerances, color standard, box tolerances, CMC DE, DE CIE2000, elliptical tolerances