DIGITAL DIGITAL PRINTINGPRINTING

TERMINOLOGY

• COLOUR MANAGEMENT: the process of maintaining consistent colour among the devices in a colour workflow

• ICC PROFILE: The description of a colour space; a standard set of figures used to characterize colour, “vendor neutral”

• ICC = Int’l Colour Consortium (vendors such as Adobe, Mac, Microsoft, etc)

ICC Profile Types

• Device Dependent: describes one particular device; a system where the colour of a file is dependent on the final output device

- Input profile: describes cameras and scanners in a one-way profile conversion

- Output Profile: describes monitors and printers in a one-way profile conversion

ICC Profile Types

• Device independent: describes an RGB working space

• Standards: Adobe RGB: printing

• sRGB: web space

• CMM: Colour Matching Method or the “engine” that transforms a file from one colour space or ICC profile to another; software that interprets information from device profile and carries out instructions on how the colour gamut of each device should be treated

• Common CMMs are Apple ColourSync, Microsoft ICM, Agfa CMM

• Gamut = the range of colours that can be displayed or printed by an imaging system

• Out of Gamut = colour on monitor will not be reproducible

• Gamma = brightness of monitor

Additive Primaries

Subtractive Primaries

Universal Working Space

RGB

Scanner ICC

Profile

Monitor ICC

Profile

System Preference

Utilities > ColourSync

Adobe RGB 1998 colour space

Apple Display Colour Space

Web Safe Colours