G7 (GRACoL G7)

An IDEAlliance proof-to-press calibration process based on principles of digital imaging, spectrophotometry, and computer-to-plate (CtP) technologies. G7 uses Gray-scale (G) and (7) solid color measurements, hence “ G7″ , to control color throughout the process. The seven solid colors are the customary C,M,Y,K, plus the secondary colors R,G,B, which represent the “trap” colors on a press sheet. G7 utilizes existing ISO standard 12647-2 as the basis for beginning G7 calibration, and ISO 2846-1 compliant inks. Printers can become G7 qualified by going through the calibration steps from proofing to printing. Graphic Ink Company offers several ISO 2846-1 compliant inks for G7 calibration, as well as G7 consulting & qualifying service. Contact Graphic Ink for more information on G7, and see our link to GRACoL and IDEAlliance on this website under “Resources”. See also “ISO 12647-2” and “ISO 2846-1”.