This part of ISO 2846 specifies a set of colours which will be produced by a series of inks intended for four-colour offset-lithography (both proof and production printing) when printed under specified conditions, on a defined substrate, using a laboratory printability tester. It also describes the method for testing to ensure conformance. Information is provided on inks for sheet-fed, heat-set web and radiation-curing processes.
This part of ISO 2846 does not apply to fluorescent inks and it does not specify pigments in order not to preclude developments which may enable different pigment combinations to be used advantageously while still achieving the colorimetric requirements specified in this part of ISO 2846.