is a Method defined by the Print Properties and Colorimetrics
Working Group of IDEAlliance. Initially G7 was developed by the
IDEAlliance GRACoL Working Group. But as adoption of G7 grew,
it became clear that the application of this method that enables
printers to reproduce a similar visual appearance across printing
types and substrates should be addressed by a group with reach
beyond the focus on sheetfed offset printing that is unique to
the GRACoL working group. Today, through the PPC Working Group,
experts from across the spectrum of printing disciplines contribute
to this important IDEAlliance Methodology.
G7® specifies the components of an image that define a similar
“visual appearance” to the human eye.
To do this, the G7 Method:
* Defines a colormetric definition for gray balance.
* Specifies gray balance in the midtones, image weight and image
contrast from the highlights to the
shadows which are the factors that determine likeness of the visual
appearance of an image.