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e-STUDIO2040C/2540C/3040C/3540C/4540C
© 2011 TOSHIBA TEC CORPORATION All rights reserved
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6. Printer-specific Adjustments (GA-1211)
6.1.2 Types of Calibration and Their Order
Explanation
To perform calibration with the Fiery Printer Controller (GA-1211), perform two types of calibration when you are
using a measurement device, or perform two or three when you are using the scanner function of the MFP.
The types of calibration and the order in which to perform them are shown below.
1. Calibration for the printer engine (in the MFP) (automatic calibration for the printer function)
• Perform automatic calibration and then correct halftone image so as to reduce sudden changes in image
density among the steps against an image processing signal.
2. Calibration for the printer engine (in the MFP) for the scanner function
•
Perform it only when ColorCal is used for the first time.
3. Calibration for the GA-1211
•
Match the density level of the calibrated printer engine with the specified density characteristics in the
calibration for the GA-1211.
* The privilege of the operation of automatic calibration is restricted to an administrator by default. However, it is
possible to give this privilege to a user. For the setting of operational privilege, refer to the MFP Management
Guide.
* The operation of the calibration for the GA-1211 is limited to the administrator, and also a preset password is
required for the operation.
In the calibration for the GA-1211, the GA-1211 detects the absolute value of the density level output from the
printer engine using a measurement device or a reference whose density level is already measured. Then the tone
characteristics of the printer are corrected to the same level as that of the case when the embedded profile is
created through the GA-1211. Namely, any MFP can reproduce the same level of tone characteristics if only it
refers to the tone correction made in this calibration. Using this profile, the accuracy of simulations such as ink
simulation or spot color simulation, which includes density correction is enhanced. If the calibration for the printer
engine (for the printer function) is omitted, the adjustable range of tone reproduction of the GA-1211 will be
narrowed and thus the tone reproduction will have a higher risk of the occurrence of banding or a sudden change
in color tone. Therefore be sure to perform the calibration for the printer engine (for the printer function).
The GA-1211 can be calibrated with devices shown below.
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