Basic tasks and three major purposes of prepress proofing

The basic task of proofing

The basic task of proofing is to produce quality products that are satisfactory for reviewers and plate printers. At the same time, in some special cases, it can also be used to replace the printing by proofing or to directly complete the production of a small number of products. Reduce waste caused by large equipment.

The main purpose of proofing

One is to check the quality of the printing plate and provide the parameters for the plate making process. Check the layout specifications, graphic content, overprint performance, etc. of the plate by proofing. Check whether the color, level, gray balance, and uniformity of the proofs meet the quality requirements; provide the on-site density values, gray balance values, dot gain values, and dot-mesh values ​​for the plate-making process for machine calibration, process design, etc. Or characteristic parameters such as minimum reproduction value.

The second is analog printing, which provides proofreading proofs for customers and editors. Proofs and proofs of the quality of the printed matter were verified, the quality standards of the official printing were confirmed, and the samples were accepted and printed.

The third is production, providing standard proofs for the printing process. The printing process is based on sample proofs for material preparation and machine adjustment, and sample proofs are used for standard printing and inspection of product quality.

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