Jan-Peter Homann's Digital Color Management: Principles and Strategies for the PDF

By Jan-Peter Homann

ISBN-10: 3540671196

ISBN-13: 9783540671190

The e-book describes colour administration for the print construction with a spotlight on enforcing criteria for separation, gentle facts, agreement evidence, facts supply and printing.

The fundamentals and techniques are designated at constructing vendor-independent colour administration workflows that could simply be discovered with top functions from e.g. Adobe, AGFA, GMG, Heidelberg, Kodak and X-Rite.

The writer explains with a distinct graphical thought how varied criteria reminiscent of ISO 12647, SWOP, GRACoL, G7, ICC profile layout and PDF/X healthy jointly.

He describes the details for establishing colour administration and qc from the print shopper over images, organisation and pre-press to the printer. The e-book has a powerful specialize in conversation among print patron, photographer, service provider, pre-press and printers. according to the simplest perform in verbal exchange it explains the $64000 steps for quality controls for electronic info, agreement proofs and prints.

"This first-class ebook, now on hand in English for the 1st time, bargains an perception and sensible recommendation on all components of ICC colour administration. in addition to supplying information at the software of photo arts workflows, it offers a history to paint conception that even the main skilled during this region will locate useful." Paul Sherfield, The lacking Horse Consultancy

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Extra info for Digital Color Management: Principles and Strategies for the Standardized Print Production

Example text

The gray axis runs vertically from black to white. 2. The saturation increases outwardly. 3. The different hues form themselves around the gray axis. 4. Levels of equal lightness run parallel to the gray axis. The LCH colors shown in this book are limited to colors obtainable in fourcolor offset printing without too much color deviation. The levels of equal lightness in the cube model 40 The cube model broken down into its hues. For a clear depiction, the diagram is limited to the six primary colors yellow, red magenta, blue, cyan and green.

In the color measurement of such papers the blue area of the spectrum shows a considerable increase, which is not present with high-quality white paper without optical brighteners. If the spectral measurement values are converted to Lab values, the papers with many optical brighteners give very blue color values which are not in harmony with the visual perception of the paper. The formulae that which Lab values are calculated from commercial spectrophotometers, simply do not work when papers with optical brighteners are measured.

Calibration The calibration or linearization of a device serves to maintain a consistent color reproduction – an essential process, particularly with digital proof systems. For this, a test sheet is printed on the relevant device and scanned with a spectrophotometer. The calibration software compares the Lab measurement values with target values and calculates an internal correction. This correction or calibration ensures that the device’s color reproduction conforms to a set specification. Because the color reproduction is dependent upon the device as well as the printing medium, there are different target values for high-quality printing systems, especially digital proof systems, for various printing media with different target values for calibration and linearization.

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Digital Color Management: Principles and Strategies for the Standardized Print Production by Jan-Peter Homann

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