Margin top/bottom, Margin left/right, Margin middle – Dell 2135cn Color Laser Printer User Manual
Page 44: Scan defaults

Purpose:
To suppress the background of the original to enhance text on the copy.
Values:
Margin Top/Bottom
Purpose:
To specify the top and bottom margins of the scanned image.
Values:
Margin Left/Right
Purpose:
To specify the left and right margins of the scanned image.
Values:
Margin Middle
Purpose:
To specify the middle margin of the scanned image.
Values:
Scan Defaults
To modify the SCAN menu defaults.
Scan Defaults
allows you to configure the following items in addition to the items under the SCAN menu.
Auto Expo. Level
Purpose:
To specify the default background suppression level.
Values:
On* Suppresses the background to enhance text.
Off
Does not suppress the background.
0.1 inch* (2 mm*)
Specify the value in increments of 0.1 inch (1 mm).
0.0-2.0 inch (0-50 mm)
0.1 inch* (2 mm*)
Specify the value in increments of 0.1 inch (1 mm).
0.0-2.0 inch (0-50 mm)
0.0 inch* (0 mm*)
Specify the value in increments of 0.1 inch (1 mm).
0.0-2.0 inch (0-50 mm)
NOTE:
Normal*
Sets the background suppression level to Normal.
Higher (1) Sets the background suppression level to Higher (1).
Higher (2) Sets the background suppression level to Higher (2).