Ricoh Aficio 480W Dolphin-C2 Service Manual page 235

SP (SERVICE PROGRAM) MODE TABLES
4901 Scan Correction: Shading Correction:
Adjusts the AEREF (Automatic Exposure Reference) setting used for shading
correction processing during image scanning and shading data output.
001 Shading Correction:
AEREF Setting
002 Shading Correction:
Shading Data Output
003 Digital AE: AEREF Setting Changes the level for background erase (AEREF
004 Digital AE: Low Limit
005 Digital AE: Start Position
[0~63/1]
Set a low value for weak background erase, a high
value for stronger background erase.
Outputs the data that was used during shading data
correction for the data of the scanned image.
0: Outputs the data of the scanned image
1: Outputs the shading data
Note:
• This SP is incompatible with SP2902 001 (Test
Pattern) Pattern 1 and SP4909 (Image Processing
Through: IPU Scan Image Module).
• Of these three SP codes, SP4901 has lowest
priority and is disabled if either SP2902 or SP4909
is enabled.
value) that is used in the digital A/E processing of the
scan data.
[-63~+63/1]
Defines the lower limit of the background erase level
that is used in the digital A/E processing of the
scanned data.
[0~255/1]
Changes the starting point for digital A/E processing
of the scanning data.
[0.5~10.0/0.1 mm]
Note: The starting position specified with the scanning
application takes priority over this setting.
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28 April 2005