Canon IR3320i Copying Manual page 142

If you press [Adjust Each Dim.], select the frame erase values by pressing [–] or [+], and press [Next].
When entering values in millimetres, you can use - (numeric keys) and .
If you enter the value with - (numeric keys), you can change the entered value by pressing
2
[–] or [+].
The screen for the next step is displayed.
If you enter a value outside the setting range, a message prompting you to enter an appropriate value
appears on the screen.
NOTE
• If you want to enter values in inches, press [Inch]. Set the inch entry function to [On] in the Additional Functions
beforehand. (See Chapter 3, "Selecting and Storing Settings to Suit Your Needs," in the Reference Guide.)
• The default setting is '4 mm' for each side. The maximum frame erase width area is '50 mm.'
2-32 Erasing Shadows and Frame Lines from Copies (Frame Erase)