Ricoh SP5 Series Service Manual page 219

SERVICE PROGRAM MODE
Mode No.
(Class 1 , 2 & & & & 3)
4-903 Filter Setting
23 Filter Strength
(257% ~ 400%)
28 Independent
Dot Erase –
Text Mode
30 Independent
Dot Erase –
Text/Photo
Mode
31 Independent
Dot Erase -
Pale Mode
32 Independent
Dot Erase -
Generation
Copy Mode
33 Scanner
Gamma
Thresh Level -
Text
34 Scanner
Gamma
Thresh Level -
Text/Photo
35 Scanner
Gamma
Thresh Level -
Generation
Copy
41 MTF Filter
Level
(25% ~ 64%)
42 MTF Filter
Level
(65% ~ 154%)
Function
* Selects the MTF strength in the main scan
direction for 257% ~ 400% enlargement for
text mode.
This SP is ignored unless the user selects
'SP Mode Changed' in UP mode.
* Selects the independent dot erase level for
text mode.
Refer to "Detailed Section Description –
Independent Dot Erase" for details.
* Selects the independent dot erase level for
text/photo mode.
Refer to "Detailed Sectional Description –
Independent Dot Erase" for details.
* Selects the independent dot erase level for
pale mode.
Refer to "Detailed Section Description –
Independent Dot Erase" for details.
* Selects the independent dot erase level for
generation copy mode.
Refer to "Detailed Sectional Description –
Independent Dot Erase" for details.
* Adjust the threshold level for the
background erase function in letter mode.
A larger value reduces dirty background.
This SP is ignored unless the user selects
'SP Mode Changed' in UP mode.
* Adjust the threshold level for the
background erase function in text/photo
mode.
A larger value reduces dirty background.
This SP is ignored unless the user selects
'SP Mode Changed' in UP mode.
* Adjust the threshold level for background
erase in generation copy mode.
A larger value reduces dirty background.
This SP is ignored unless the user selects
'SP Mode Changed' in UP mode.
* Selects the MTF filter coefficient in the sub
scan direction for 25% ~ 64% reduction for
text mode.
0:No filter, 1:Weak 8:Strong
This SP is ignored unless the user selects
'SP Mode Changed' in UP mode.
* Selects the MTF filter coefficient in the sub
scan direction for 65% ~ 154%
magnification for text mode.
0:No filter, 1:Weak 8:Strong
This SP is ignored unless the user selects
'SP Mode Changed' in UP mode.
4-26
June 30, 1998
Settings
0: x 0.25
1: x 0.5
2: x 1
3: x 2
4: x 4
0 ~ 15
1/step
2
0 ~ 15
1/step
9
0 ~ 15
1/step
1
0 ~ 15
1/step
1
0 ~ 255
1/step
15
0 ~ 255
1/step
15
0 ~ 255
1/step
15
0 ~ 8
1/step
3
0 ~ 8
1/step
4