Canon mp280 series On-Screen Manual page 304

After adjusting each color, click OK.
Important
Adjust the slider gradually.
4.
Complete the setup
Click OK on the Main tab.
When you execute print, the image is printed with the adjusted contrast.
Related Topics
Selecting a Combination of the Print Quality Level and a Halftoning Method
Specifying Color Correction
Adjusting Color Balance
Adjusting Brightness
Adjusting Intensity
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