Graphic technology - Process control for the production of half-tone colour separations, proof and production prints - Part 2: Offset lithographic processes (ISO 12647-2:2013, IDT)
This part of ISO 12647 specifies a number of process parameters and their values to be applied when producing colour separations, printing formes and print production for four-colour sheet-fed and web-fed offset printing presses excluding coldset offset lithography on newsprint.
The parameters and values are chosen in view of the typical process covering the process stages “colour separation”, “proof production”, “making of the printing forme”, “OK print” and “production printing” on all kinds of commercially available production substrates.
This part of ISO 12647:
— is directly applicable to press proof prints and printing processes that use colour separation printing formes as input;
— is applicable to press proof prints and printing processes with more than four process colours as long as direct analogies to four-colour printing are maintained, such as for data and screening, for print substrates and printing parameters;
— is applicable to printing on cardboard material for packaging;
— is applicable for all kinds of drying methods such as heat-set, infrared, and ultraviolet;
— provides references for quality assurance and quality management.
This part of ISO 12647 is not applicable to processes other than offset such as printing directly from digital data where there is no intermediate image carrier, or where the image carrier can be refreshed for each impression and thus each impression can be different in content.