AM Lithography
G7® Certification

G7AM Lithography continues to lead the market in quality control and was recently certified June of 2011 as a G7 printer. G7® is IDEAlliance’s industry-leading set of best practices for achieving gray balance and is the driving force for achieving visual similarity across all print processes.


G7® is a method defined by the Print Properties and  Working Group of IDEAlliance. The application of this method enables printers to reproduce a similar visual appearance across printing types and substrates. 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 definition for gray balance.
  • Specifies gray balance in the mid-tones, 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.
  • G7® is both a definition of grayscale appearance, and a calibration method for adjusting any CMYK imaging device to simulate the G7 grayscale definition.
  • G7 yields a visual match between different imaging systems using simple 1-dimensional curves, and enables shared appearance between different printing devices or specifications when additional color management is not available.
  • G7 is the basis for GRACoL on #1 paper (TR006), SWOP  on #3 paper (TR003), SWOP on #5 paper (TR005) and FIRST’s Flexo on white polyester substrate (TR007). G7 utilizes one of the implementation methods of the new ISO 10128 standard for near-neutral calibration.
  • G7 is device independent. The G7 neutral print density curve (NPDC), gray balance definitions and calibration methodology are the same for any imaging technology, regardless of substrate, colorants, screening technologies, etc.

To find out more about G7 certification as well as GRACOL standard implementation please visit:   http://www.idealliance.org