Canon imagePROGRAF GP-4000 - Manual (Page 346)

Performing Color Calibration
Color calibration improves color consistency by compensating for slight differences in how color appears
when printing due to individual variations or aging among the printers.
Executing color calibration will print a test pattern (built into the printer) that is then read automatically by the
printer.
By this operation, calibration adjustment values reflecting the print result of the test pattern are set
automatically.
Important
• To increase the color stability precision when executing color calibration, maintain a constant •
temperature and humidity environment each time within the range of temperatures of 59 to 86°F (15 to
30°C) and within the range of humidities of 40 to 60%.
Executing color calibration under various temperature and humidity conditions may prevent the printer
from making the correct adjustments.
• Before color calibration, ensure the printer is not exposed to direct sunlight or other strong sources of •
light.
If the printer is exposed to strong sources of light, correct adjustment may not be possible.
Recommend Timing for Color Calibration
We recommend color calibration in the following situations.
• After initial printer installation
• After print head replacement
• If colors seem different from before, despite using the same printing environment, under the same
conditions
• To print with colors aligned from multiple printers
• When the execution guide is displayed
Executing Color Calibration
Paper size that can be used for color calibration
When using rolls
Roll at least 10.00 in. (254.0 mm) wide
When using sheets
Sheet of A4/Letter size or larger
Execute color calibration using the following procedure.
1. You can confirm whether the paper to be loaded can be used in color calibration. 1.
Paper Information List
2. Load paper. 2.
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