Historical
ANSI CGATS.9-2007
Graphic technology - Graphic arts transmission densitometry measurements - Terminology, equations, image elements and procedures
This standard defines terminology, equations, process control elements, and procedures for measurement and communication of transmission densitometry data for graphic arts halftone images. Graphic arts includes, but is not limited to, the preparation of material for, and volume production by, production printing processes which include offset lithography, letterpress, flexography, gravure, and screen printing.
Although this standard addresses halftone applications, there are situations where non-traditional halftones and/or continuous tone materials are used for which these computations are also appropriate.
Association for the Suppliers of Printing, Publishing & Converting Technologies [npes]