Ricoh D093, Service Manual

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SP4-xxx Scanner
SM Appendix 2-71 D093/D094
Appe
ndix:
SP
Mode
Ta
b
le
s
4550 Scanner: Text/Chart DFU
These SP codes enhance the quality of originals scanned in the Text/Chart mode
(selected on the operation panel).
5 MTF : 0(Off) 1-15 (Weak-Strong)
Sets the MTF coefficient scanned in the Text/Chart mode. When the original
image is converted to electrical signals, the contrast is reduced due to the
influence that adjacent white and black pixels have on one another as a result of
CIS properties. This may cause very narrow bands or spacing between black and
white areas. Use the MTF adjust to correct this problem and emphasize image
detail.
[0 to 15 / 8 / 1]
0 (Weakest), 8 (Medium: Default), 15 (Strongest)
6 Smoothing: 0 (x1) 1-7 (Weak-Strong)
Sets the level of smoothing for originals scanned in the Text/Chart mode.
[0 to 7 / 0 /1 ]
0 (Weakest), 4 (Medium: Default), 7 (Strongest)
7 Brightness:1-255
Sets the overall brightness images scanned in the Text/Chart mode.
[1 to 255 / 128 / 1]
1 (Weakest), 128 (Medium: Default), 255 (Strongest)
Note : Raising the brightness level may increase moiré
8 Contrast:1-255
Sets the overall contrast of images scanned in the text/chart mode.
[1 to 255 / 128 / 1]
1 (Weakest), 128 (Medium: Default), 255 (Strongest)
Note : Raising the contrast level may increase moiré