Improve the proofing system
To ensure the printer:
Have stability and repeatability
Good uniformity of the entire image area
Short-term or temporary color changes are not important
White substrates with tolerances within the characteristic chart range or standard range
Ability to produce a color gamut equal to or larger than the characterization file
Ability to produce dark tones equal to or deeper than the characterization file
A better way to check color gamut and color gamut changes is to turn off color management, create a printer ICC file, and then use software like CHROMIX ColorThink to compare the printer file with the characterization file. If the standard file is larger than the printer file, some colors cannot be printed correctly.
Optimized proofing system
Optimize your equipment according to the requirements of the supplier, except for the following operations:
If multiple calibration procedures are required, the linear method advocated by the supplier can be used as the calibration baseline, and user-editable curve adjustment can be used to achieve G7 NPDC and gray balance.
If the supplier's requirements include any form of ICC or traditional color management, these factors can be ignored in G7 calibration.
Important note: Before G7 calibration, make sure that ICC or other color management is turned off. (However, after the calibration or file processing procedures are completed, they can be recovered)
Print standard proofs
Use GRACOL7 printing machine proofs () or your own proofs.
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