CALIBRATED REFLECTION DENSITOMETER

摘要

A printer apparatus 100 includes a reflection densitometer 102 comprising an optical sensor 104 that detects light reflected from each color patch on each page in a sequence of measurements, and a processor 106 which is coupled to the optical sensor 104 and manages the calibration and measurement operations. The processor 106 determines the magnitude of a gloss component of the illumination and compares the gloss component magnitude from a plurality of measurements at selected dissimilar ink coverage.