Ricoh B079, Service Manual

Page: 679 / 948

SCANNER SERVICE MODE
SM 25 B548
Printer Op
tion
B54
8
SP2 Mode Number Function and [Setting]
2003 19* Brightness – Notch 3 [0-255 / 128 / 1 step]
20* Contrast – Notch 3 Adjusts the image density for each image
density level for Text (OCR) mode when using
binary picture processing mode.
[0-255 /
128 / 1 step]
21* Threshold Level – Notch 3 [0-255 / 17 / 1 step]
22* Brightness – Notch 2 [0-255 / 128 / 1 step]
23* Contrast – Notch 2 [0-255 / 10 / 1 step]
24* Threshold Level – Notch 2 [0-255 / 128 / 1 step]
25* Brightness – Notch 1 [0-255 / 128 / 1 step]
26* Contrast – Notch 1 [0-255 / 128 / 1 step]
27* Threshold Level – Notch 1 [0-255 / 2 / 1 step]
28* Independent Dot Erase Selects the independent dot erase level.
With a larger SP setting, more dots are detected
as independent dots and erased.
If this is “0”, independent dot erase is disabled.
[0-7 / 4 / 1 step]
29* Unevenness correction Selects whether the unevenness correction is
done.
This function is like an FCI function. If this is “1”,
the edges of characters in scanned images will
be smoothed.
[ 0: OFF , 1: ON]
2004 [Text/Photo Mode Settings]
1* MTF Filter Coefficient
(Main Scan) Selects the MTF filter coefficient in the main
scan direction for Text/Photo mode.
Select a higher number for a stronger filter.
If this is “0”, the MTF filter is not applied.
[0-13 / 2 / 1 step]
2* MTF Filter Coefficient
(Sub Scan) As above, for sub scan
[0-13 /
2 / 1 step]
3* MTF Filter Strength
(Main Scan) Selects the MTF filter strength in the main scan
direction for Text/Photo mode.
Select a higher number for a stronger filter.
[0-7 / 4 / 1 step]
4*
MTF Filter Strength
(Sub Scan)
As above, for sub scan
[0-7 / 4 / 1 step]
5* Smoothing Filter Selects the smoothing pattern for Text/Photo
mode when using binary picture processing
mode.
A larger value could cause moiré to appear in
the image.
[0-7 / 0 / 1 step]
6* Scanner Gamma Selects the scanner gamma type for Text/Photo
mode when using binary picture processing
mode.
[0-11 /
6 / 1 step]
7* Brightness – Notch 7 Adjusts the image density for each image
density level for Text/Photo mode when using
binary picture processing mode.
[0-255 /
128 / 1 step]