Ricoh B089 Service Manual page 248

SERVICE PROGRAM MODE
4904* Independent Dot Erase
4904 1 Text
4904 2 Photo
4904 3 Text/Photo
4904 4 Pale
4904 5 Generation
Background Erase -
4904 6 Text
4904 7 Photo
4904 8 Text/Photo
4904 9 Pale
4904 10 Generation
Gamma Selection
4904 11 Text
4904 12 Photo
4904 13 Text/Photo
4904 14 Pale
4904 15 Generation
4905* Image Data Path
Selects one of the following video data outputs which will be used for printing. DFU
[0 ~ 3 / 0 / 1 step]
0: Normal
1: After black level correction
2: After shading correction without black level correction
3: Shading data
4907* Gash Adj: Others
4907 1* Fax 25%, 50% Reduction
Determines whether 25% and 50% reduction is available in fax mode.
[0 = No, 1 = Yes]
4907 2 Outline Level DFU
B089/B093
This adjustment is only effective for the "Custom Setting"
original type.
With a larger SP setting, more dots are detected as
independent dots and erased. However, dots in mesh-like
images may be detected as independent dots mistakenly. If
"0" is selected, independent dot erase is disabled.
[0 ~ 10 / 0 / 1 step]
[0 ~ 10 / 3 / 1 step]
This adjustment is only effective for the "Custom Setting"
original type.
A larger number reduces dirty background. If "0" is selected,
background erase is disabled.
[0 ~ 255 / 0 / 1 step]
This adjustment is only effective for the "Custom Setting"
original type.
Selects the gamma table for each original type.
[0 ~ 2 / 0 / 1/step]
0: Standard gamma table
1: This gamma table reduces the background of the original
and gives sharp characters.
2: The gamma table increases the number of gradations in
high-density areas.
4-32 SM