This International Standard defines the layout and colorimetric values of targets for use in the calibration of a photographic product/input scanner combination (as used in the preparatory process for printing and publishing). One target is defined for positive colour transparency film and another is defined for colour photographic paper.
BS ISO 12641:1997 history
1998BS ISO 12641:1998 Graphic technology. Prepress digital data exchange. Colour targets for input scanner calibration
1998BS ISO 12641:1997 Graphic technology - Prepress digital data exchange - Colour targets for input scanner calibration