Ricoh A-C2 - Page 199

26 January, 2001 SERVICE PROGRAM MODE
5-25
Service
Tables
SP4 Mode Number Function and [Setting]
4903* 64 Independent Dot Erase:
Generation Copy
Selects the independent dot erase level for the
generation copy mode.
A larger value erases more dots. If zero is
selected, independent dot erase is disabled.
[0~15 / 8 / 1 step]
65*
Background Erase Level:
Text Mode
Adjusts the threshold for background erase for
the text mode. A larger value reduces dirty
background. If zero is selected, background
erase is disabled.
[0~255 / 10 / 1 step]
66*
Background Erase Level:
Photo
Adjusts the threshold for background erase for
the photo mode. A larger value reduces dirty
background. If zero is selected, background
erase is disabled.
[0~255 / 0 / 1 step]
67*
Background Erase Level:
Text /Photo
Adjusts the threshold for background erase for
the text/photo mode. A larger value reduces dirty
background. If zero is selected, background
erase is disabled.
[0~255 / 0 / 1 step]
68*
Background Erase Level:
Light Original
Adjusts the threshold for background erase for
the light original mode. A larger value reduces
dirty background. If zero is selected, background
erase is disabled.
[0~255 / 10 / 1 step]
69*
Background Erase Level:
Generation Copy
Adjusts the threshold for background erase for
the generation copy mode. A larger value
reduces dirty background. If zero is selected,
background erase is disabled.
[0~255 / 20 / 1 step]
70* Edge Detection: Text
Selects edge detection for the text mode
(65%~154%). Edge detection applies MTF
correction only to edges.
[0~1 / 0 / 1 step]
0: Edge detection not conducted.
1 Conducts edge detection processing.
71* Edge Detection: Text/Photo Selects edge detection for the text/photo mode
(65%~154%). Edge detection applies MTF
correction only to edges.
[0~1 / 0 / 1 step]
0: Edge detection not conducted.
1 Conducts edge detection processing.
72* Edge Detection Threshold
Value: Text
Selects the threshold value for edge detection
for the text mode (65%~154%).
[0~8 / 4 / 1 step]
The larger the value, the easier the edge
detection and the better the text quality.
The lower the value, the more difficult the edge
detection and the better the pattern quality. As
MTF correction is applied only to edges, this
function is effective in reducing moiré. However,
a higher value could cause image quality to
deteriorate as a result of erroneous edge
detection output.