sheet variability of a proofing system such that an estimate could be provid of the expeted variability between a sheet used for characterization and a sheet printed some in the future It would be beneficial if TC130 also were to develop standerdized tests for short and longer-term image stability. This could build on the image keeping work of TC 42/WG5 but should focus on issues related to the time required after printing to reach a stability plateau and the length of this plateau. as a function of storage and viewing conditions.
Here,long term is weeks to months vs. the years typically studied by Tc42.
The individual device manufacturers would need to conduct tests based on these standards and report appropriate data for their systems. These are all part of variable 5.
CIE,TC130,or ASTM-A valid estimate of the uncertainty of colorimetric measurements is critical for both the direct comparison of measurements of proofs and prints and for development of charac-