Kodak Document Scanner 9500 with Image Manager Integrator Manual page 92

Example 3
If the entire image border is almost as dark as the scanner
background (i.e., black or dark blue), deskew, auto-cropping and
border reduction may not work properly. The resulting image will
not be deskewed or auto-cropped, as shown in the example
below.
Possible result of deskew/auto-cropped image
with black/dark border
12 " - Full width of Scanner
A-61122/A-61124 March 1999 E-19