Backing for Measurement 

What is backing for measurement?

(Backing for measurement in French: support de mesure) Surface standardized in hue (controversial: black or white) and reflection behavior (matt) which must be under a printed copy during the measurement of color or color density; black backing for measurement: absorbs light to prevent either a printed or an unprinted rear side from influencing the measuring results; this is why it is used in the printshop, for copies, OK sheets and test prints for digital proof and high-circulation paper; white backing for measurement: during the acceptance of the characterization data (measuring of targets and test formes) on substrates and digital proof papers.