Canon 3749B002 On-Screen Manual page 370

You can also directly enter a value linked to the slider. Enter a value in the range from -50 to 50.
After adjusting the tones, click OK.
6.
Complete the setup
Click OK on the Main tab.
When you execute print, the color document is converted to grayscale data with adjusted tones. It
allows you to print the color document in monochrome.
Related Topics
Printing a Color Document in Monochrome
Adjusting Brightness
Adjusting Intensity
Adjusting Contrast
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