Linearization.

Linearization is the calibration pass that sets ink limits and builds per-channel correction curves so a requested tone value lands as that tone on the sheet, for one specific ink, substrate and set of press settings. It is not profiling. Linearization controls how much ink goes down and how the dots spread and merge on that substrate, while an ICC profile is only a lookup table of the colors that machine state can already reach, valid for the device state and the media it was measured on. Build a profile on a press nobody linearized and the drift is baked into the profile: plugged shadows, a gray axis off neutral, and a reprint the day the customer holds the new run against the one you shipped last month.