Ricoh SP5 Series Service Manual page 223

SERVICE PROGRAM MODE
Mode No.
(Class 1 , 2 & & & & 3)
4-908 Text/Photo Separation Method
4-909 IPU Setting - 2
1 Laser Pulse
Position
Threshold
2 Thin Line
Level 1 -
White
3 Thin Line
Level 1 - Black
4 Thin Line
Level 2 -
White
5 Thin Line
Level 2 - Black
6 Error Diffusion
Table
7 Edge
Detection 1
8 Edge
Detection 2
19 Image Data
Path -
Application
Function
* Select the text/photo separation processing
type during the auto text/photo separation
stage.
This SP is ignored unless the user selects
'SP Mode Changed' in UP mode.
* Decides the threshold level for selecting the
type of laser pulse width modulation that is
used
Do not change the value.
* Decides the threshold value for a pixel to be
white when line width correction type 1 is
performed.
Do not change the value.
* Decides the threshold value for a pixel to be
black when line width correction type 1 is
performed.
Do not change the value.
* Decides the threshold value for a pixel to be
white when line width correction type 2 is
performed.
Do not change the value.
* Decides the threshold value for a pixel to be
black when line width correction type 2 is
performed.
Do not change the value.
* Selects the gamma table for error diffusion.
Do not change the value.
* Decides the threshold value for detecting an
edge.
Do not change the value.
* Decides the threshold value for detecting an
edge.
Do not change the value.
Selects one of the following video data outputs, which will be
used for application.
0: After image scanning
1: After image processing
2: After MSU
3: Normal operation
Do not change the value.
4-30
June 30, 1998
Settings
0: Letter and
photo filters
1: Text filter
only
2: Photo filter
only
0 ~255
1/step
32
0 ~ 15
1 /step
3
0 ~ 15
1 /step
13
0 ~ 15
1 /step
4
0 ~ 15
1 /step
12
0: Gamma
table 0
1: Gamma
table 1
0 ~ 255
1 /step
128
0 ~ 255
1 /step
128