First, we need to design a piece of Chu printing information, and also include sample drafts that reflect the plate making and printing attribute templates. Next, we must also prepare the necessary instruments. We must also mention the standard sample color separation and screening to generate the necessary IB-TIFF for computer-to-plate. Document, then through the CTP output to obtain a standard plate; print proofs under normal printing pressure, ink balance and overprint and other printing conditions, you can melodiously check the proofs.
There are subjective evaluation methods and objective evaluation methods for evaluating proofs. Each has its own advantages and disadvantages.
By combining visual evaluation with instrument evaluation, good results can be obtained.
Source: Shantou Printing Network