Toshiba GA-1121 manual An overview of calibration, Understanding calibration, Color Calibration

22-2

Color Calibration

NOTE: The procedures described in this chapter are fundamentally the same for Windows and Mac OS computers. The main differences are the interface cable and the port used to connect to the measurement instrument. The illustrations in this chapter describe the Windows version.

NOTE: The term computer is used to refer to any computer running ColorWise Pro Tools.

An overview of calibration

Calibration generates curves that adjust for the difference between the actual toner densities (measurements) and the response expected by the output profile.

•Measurements represent the actual color behavior of the copier/printer.

•Calibration sets are sets of measurements.

•A calibration target that describes the expected behavior of the copier/printer is contained in each output profile.

After you have calibrated the GA-1121, a calibration set is stored. This calibration set will be used when it is associated with an output profile. Every output profile has an associated calibration set. If you have not specified one, the calibration set associated with the default output profile is used.

If you change the calibration after a saved job has been processed (RIPped), you do not need to reprocess (reRIP) the job. The new calibration affects the job without needing to be reprocessed.

NOTE: Changing calibration has the potential to affect all jobs for all users, so consider limiting the number of people authorized to perform calibration. Set an Administrator password in GA-1121 Setup to control access to calibration (see the Configuration Guide).

Understanding calibration

Although most users’ needs are met by the default calibration set, the GA-1121 allows you to choose a calibration set to customize calibration for specialized jobs.