ISO 12647

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The ISO norm ISO 12647 ( English Graphic technology - Process control for the production of half-tone color separations, proof and production prints ) describes coloring standards, standard papers and process control methods for all basic printing processes . The standard consists of several parts and is constantly being expanded:

  1. Parameters and measurement methods (definitions and measurement methods)
  2. Offset lithographic processes ( offset printing )
  3. Coldset offset lithography on newsprint ( newspaper printing )
  4. Publication gravure printing ( illustration gravure printing )
  5. Screen printing ( screen printing )
  6. Flexographic printing ( flexographic printing )
  7. Proofing processes working directly from digital data ( digital proof printing )
  8. Validation print processes working directly from digital data ( data-based validation of standardized printing conditions )
  9. Metal decoration printing ( tin printing ) [standard part under development]

Offset printing

Part 2 of the standard has the greatest economic importance, as it deals with the most widespread printing process, sheet- fed and web offset printing . It is based on the offset printing process standard , published by the Federal Association of Printing and Media , and its further development is interpreted in a practical manner in the sense of a complete workflow guide for standardized offset printing processes. In ISO 12647-2 since 2013 and in the offset printing process standard since 2016, the previous five types of paper have been replaced by eight substrate categories, recently including the degree of optical brightening :

ISO 12647-2 offset substrate categories
category description optical brightening Weight per unit area (g / m²) typical substrates HKS
1 multi- coated paper moderately brightened 80 ... 250 premium-coated papers:
  • all WFC ( Wood-Free Coated ) papers: glossy / semi-matt / matt picture printing paper for sheet-fed offset
  • all HWC papers ( High Weight Coated )
  • some MWC ( Medium Weight Coated ) papers for web offset
 K
2 improved LWC paper for web offset slightly brightened 51 ... 80
  • LWC-I paper ( Improved Light Weight Coated )
  • some MWC papers
3 glossy standard web offset paper slightly brightened 48… 70
  • LWC-S papers ( Standard Light Weight Coated ), coated glossy to semi-matt
 E.
4th matte to semi-matte standard web offset paper slightly brightened 48… 70
  • MFC ( Machine Finished Coated ) papers , matt
  • some semi-matt coated LWC papers
5 wood-free, white natural paper (uncoated) strongly brightened 70 ... 250
  • all WFU ( Wood-Free Uncoated ) papers for sheetfed and web offset
  • the former paper type 5 "natural paper, yellowish" has been deleted without replacement due to its insignificance
 N
6th highly calendered SC paper slightly brightened 38 ... 60
  • SC-A paper (better super calendared ) is hardly ever produced
  • SC-B paper ("B-Stoff", worse super calendared ) for web offset
7th improved newsprint weakly lightened 40 ... 56
  • UMI paper ( Uncoated Mechanical Improved )
  • INP ( Improved News Print ) for web offset
 Z
8th Newsprint weakly lightened 40… 52
  • SNP paper ( Standard News Print ) used in heatset web offset
  • the SNP paper used in coldset web offset, the actual newspaper printing, is described in part 3 of the standard

Illustration gravure

Similar to the web offset paper categories, Part 4 of the standard distinguishes between the LWC Plus, LWC Standard, SC Plus, SC Standard and News Plus printing papers for illustration gravure. According to the ISO 2846-3 printing ink standard, two gamut classes are applied to these papers , resulting in ten substrate categories.

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