G7® is Idealliance’s global industry-leading set of specifications for achieving visual similarity across all print processes.
G7 can be applied to any printing process including commercial printing, newsprint, flexo digital printing (inkjet, electrophotographic, LEP), dye sublimation, screen, wide format, industrial inkjet, gravure and offset (web and sheetfed). The G7 methodology utilizes the existing ISO 12647 Standards as the basis for good printing. G7 requires printing with inks defined by ISO 2846-1 so that the dry solids measure as close as possible to the ISO CIELab values for seven colors – the four primary colors and three 2-color overprints specified in ISO 12647. The purpose of G7 is to specify a simple calibration process that will help the printers reliably achieve a close “visual match” from proof to press, G7 breaks from tradition by focusing on colorimetric data for gray balance in the mid-tones rather than on densitometric aims, i.e. dot gain, for each color. G7 is named for its gray scale calibration technique and the (7) ISO ink colors it requires.
Idealliance certifies the industry’s most knowledgeable experts to qualify leading providers of print, creative, and prepress services in the G7 methodology. The G7 method outlines an easy-to-follow recipe for implementing ISO printing standards and additional metrics. The result is a simple but powerful way to match from proof to press.
- G7 is a method to ensure a similar appearance across multiple devices
- 2.G7 is used to consistently hit desired color targets
- G7 is designed to align all processes, substrates, and inks
- G7 is a global specification for targeting gray balance
Proven Quality Control
A Shared Visual Appearance
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