Ricoh B286, Service Manual, Page: 357 / 622

SP4-xxx Scanner
SM 5-87 B286/B289
Service
Ta
bles
4901 Scan Correction
DFU
1
Shading Correction: AEREF
Setting
Displays the AEREF value used to supplement
shading processing.
[0 to 63/0/1]
2
Shading Correction: Shading
Data Output
Outputs the shading data used during
supplemental shading processing of scanned
image data.
[0 to 1/0/1]
0: Scanned image after shading processing
(normal)
1: Shading data
3 Digital AE: AEREF Setting
Changes the AEREF value used during digital
A/E processing of the scanned image.
[-63 to +63/0/1]
4 Digital AE: Low Limit
Provides the boundary values to the digital A/E
processing address for the scanned image data.
[0 to 255/41/1]
5 Digital AE: Start Position
Defines the start position for digital A/E
processing of the scanned image data.
[0.5 to 10.0/5.0/0.1 mm]
4903 Image Quality Adj.
Use this if density is not equal in shaded areas of the copy. The change from high
to low density areas in shaded areas must be smooth. Do these SP adjustments
if you see “false outlines” in shaded areas of the copy.
!
To increase the effect, use a higher setting.
! To decrease the effect, use a lower setting.
! The higher settings can make text look better, but can also decrease the
quality of the image.
MTF Filter Settings
1 Text (25.0-55.0%)