Patent ID: 7619771

Claim:
In a printer having a colorimeter that does not include a reference tile, a method comprising: automatically calibrating the colorimeter using a first print medium of a first media type, wherein the calibrating step includes: transporting the first print medium from a first media tray to the colorimeter; measuring, by use of the colorimeter, a color of the first print medium; using the measured color of the first print medium and a pre-determined description of the first print medium color to calibrate the colorimeter; immediately following the calibration of the colorimeter, automatically printing a characterization target on a set of media each of a second media type, where the characterization target comprises a set of color fields; using the calibrated color measurement system to measure a color of each color field in the printed characterization target so as to generate a set of color field measurements; and using the set of color field measurements to define a color transform for use when printing to the second media type.