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Process colours are the colours that are created in printing when several colours are printed on top of each other (usually using halftone screening).
In four-colour printing, this colour is composed of cyan, magenta, yellow and black. With these four colours a very large number of colours with different tonal values can be printed.
To “proof” means to produce a proof or have a proof produced.
A proof (correct: contract proof) is an ISO-certified testing device for the graphic arts industry. A proof simulates the colourfulness of offset or gravure printing in a colour and legally binding manner within the narrow tolerances of ISO 12647-7.
Proof cheap is a typical search term that people use in search engines to search for a cheap, colour and legally binding proof. But what makes a cheap proof? A proof becomes a proof that it is produced according to the specifications of the latest revision of the proofing standard ISO 12467-7 and that it is within the tolerances of this standard. The current revision is ISO 12647-7:2016, which has been tightened even further with this standard and has been supplemented by a certified edition of spot colours such as …
The proof costs, i.e. the costs for a proof, are usually calculated according to the format to be proofed and the quantity of proofs.
PSD is “Process Standard Digital Printing” by the Fogra as PSO stands for for “Process Standard Offset”.
Process Standard Digital Printing certified companies operate mainly in the field of small-scale or large-format digital printing. The certification is valid for two years and then must be re-certified.
PSO stands for “ProcessStandard Offset Printing”, a standard that was developed by Fogra and the German Printing and Media Industry together. The ProcessStandard Offset Printing is a set of standards for offset printing. With test equipment and control by measurments as described in the PSO, the printing process of the data delivery and data preparation on the platemaking is monitored, controlled and checked.
PSR stands for “Process Standard Rotogravure”, a standard provided by Fogra, ECI and the German Printing and Media Industries Federation (bvdm).
The Process Standard Rotogravure is a standard developed for gravure printing.
Quato was a successful German manufacturer of monitors, scanners and measuring instruments for color critical work. In August 2013, Quato decommissioned in and has since been discontinued.
“Relative Colorimetric” is one of four rendering intents in gamut mapping.
In gamut mapping, the rendering intent (rendering priority) is the strategy by which colours are converted from one colour space to another.
There are four types of rendering intents, defined by ICC: Perceprtual, Saturation, Absolute Colorimetric and Relative Colorimetric.
RGB stands for red, green and blue. Human colour vision is based on these colours.
A RIP is a raster image processor. A RIP is normally understood as a software, sometimes also a hardware or a software / hardware combination, that converts Postscript or PDF data of a page description language into raster points or image files that a “imagesetter” can expose to a plate, film or a proof output.
The Roman16 test images are a collection of images specifically photographed for testing colour management applications.
The ‘ProcessStandard Rotogravure’ (PSR) is a gravure printing standard provided by Fogra, the ECI and the German Printing and Media Industries Federation. The ProcessStandard Rotogravure is a standard developed exclusively for gravure printing.
Saturation is a characteristic of the colourfulness of a colour. Alongside hue and brightness, saturation is one of the basic properties of a colour.
Scale colours are standardised variants of the process colours cyan, magenta, yellow and black, which were defined according to earlier fixed standards such as the ‘Euroscala’. The term refers to a colour scale that enables a colour-accurate and reproducible representation of these colours. The best-known standards for process colours are ISO 2846 (colour properties of printing inks) and ISO 12647 (standardised printing processes). The specifications of these four basic process colours ensured that printing results remained reproducible regardless of the machine, location or time. They were therefore mainly used in …
The Scheufelen paper mill was one of the best known and most traditional paper mills in Germany for over 100 years.
The SCTV, the Spot Colour Tone Value, is a ratio of the colorimetric difference between the hue, the substrate and the solid tone. SCTV uses L*a*b* as a basis, and in the best case also spectral data, and therefore works equally well with all spot colours, printing processes and papers and delivers a consistent result. When calibrating spot colours, SCTV reliably produces a result in which the 50 % hue of the colour is visually very close to the expected 50 % appearance. In the past, defined target values for …
A soft proof is – in contrast to the classic “Hard Proof” on paper – a proof, which is soley displayed on a monitor.