Canon imagePROGRAF iPF6400 User Manual page 494

Adjust the Colors while Checking the Preview (for Monochrome)
6
In Shadow, drag the slide bar toward Light.
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Note
7
Click the Curves button then click near the center of the curve.
8
Enter 120 in Input and 135 in Output then click the OK
button.
9
Click the Print button.
This applies the image adjustments and starts the print job.
494
You can change the numbers by inputting in numerical characters.
You can change the numbers by clicking either ▲ button or ▼ button.
iPF6400
User's Guide