Fujitsu fi-4860C Operator's Manual page 236

When scanning in Binary mode (Line art), document type and a suitable pre-
set pattern relationship is shown as follows:
HINT
The horizontal axis shows the darkness/color of the background against
the text/lines on the documents.
The vertical axis shows the darkness of the text and lines on the
documents.
Document type and IPC preset pattern
Normal
Text Normal 1: Normal
Background
Darkness
and normal
darkness text
i 2: Mid darkness
background and
Light
light text
*1 to 5 indicates IPC pre-set pattern number.
Background darkness
Dark
3: Dark back-ground
and
normal darkness
text
Background color
Red Green
4: Red back- 5: Green
ground and back-ground
light text and light
text
Blu
e