Separation & Proof

The proof is the most important control (checking) instrument to evaluate digital images and print data. Binding specifications for proofs and print according to the industry standard are specified in the Manual "ProzessStandard Offsetdruck" ["Offset printing process standard"]. An excerpt for "Print data and proofs" is summarized in the "MedienStandard Druck" ["Media standard printing"]. Both publications are available in the Druck and Medien country associations and are based on the international ISO 12647 Standard.

Only color standards - that are defined for proofs and printing - allow proofs and prints to be independently checked using the appropriate measured values. The printing technique used as well as the paper type used are decisive parameters that are responsible for color rendition in the final printed product. This is the reason that color standards for proofs and prints predominantly refer to a specific printing technique and a specific paper type.

Siemens expects from its partners in the separation and proof pre-press stages that they work according to industry sector standards. For offset printing these are the ISO profiles.

Siemens specifies the profile version ISOcoated_v2_310_GCR.icc for the separation for offset printing on coated papers. The maximum surface coverage is 310%. This means that CMYK data can also be used for roll offset printing without any problems. The neutral tones are more strongly built-up over black. This guarantees a higher degree of stability when printing (the file is available in our download area).

Proofs must simulate the colorspace ISOcoated_v2. All Proofs must contain a Mediawedge and at least one Proof of each series must have a report of the colormetrical evaluation. The more stringent Siemens tolerances apply:

Additional proof requirements for Healthcare
- Print on Epson of the XX80er Series with original Epson inks
- GMG Rip-Software
- Paper: GMG Semimatt

In the Ugra/FOGRA media wedge, the B15 field corresponds to Siemens petrol (CMYK 100/0/40/0).

All data relating to Pantone colors are coordinated and harmonized with the Pantone levels, Third Edition 2005.