Computer program product for modifying the black channel of an output device profile without altering its colorimetric accuracy

摘要

This is a method for adjusting output device profiles for four-color devices such as offset presses. The user of this invention starts by selecting a base profile. This base profile produces satisfactory color but does not have the desired amount of Gray Component Replacement (GCR). The user of this invention makes use of this invention to adjust the GCR of the output profile until it is at some desired level. The invention then produces a new output profile which produces the same color as the base profile but which has the desired degree of GCR.