Ricoh AFICIO A267 Service Manual page 205

SERVICE PROGRAM MODE
Mode No.
Class Class
1 and 2 3
P - Scanner Gamma
(Text - Binary)
4
P - Scanner Gamma
(Text/Photo - Binary)
5
4-928*
P - Scanner Gamma
(Photo - Binary)
6
P - Matrix Filter
(Text - Grayscale)
1
P - Matrix Filter
(Text/Photo -
2
Grayscale)
P - Matrix Filter
(Photo - Grayscale)
4-929*
3
P - Matrix Filter
(Text/Photo - Binary)
4
Function
This adjustment is only effective for the
"Service Mode" original type setting.
Selects the scanner gamma curve. If "0" is
selected, the scanner gamma curve is either
AE or NAE, depending on the setting for the
other original types in the same mode (e.g.,
AE linear for text-greyscale, as used when
pale, normal, or generation modes are
selected). See "Detailed Descriptions -
Image Processing" for details.
Normally do not change the value.
Selects the error diffusion matrix filter in text
mode with grayscale processing.
This adjustment is only effective for the
"Service Mode" original type setting.
See "Detailed Descriptions - Image
Processing" for details.
Normally do not change the value.
Selects the error diffusion matrix filter in
text/photo mode with grayscale processing.
See the comment for SP4-929-1.
Selects the dither matrix filter in photo
mode. A larger number increases the
number of gradations, but may reduce the
contrast.
This adjustment is only effective for the
"Service Mode" original type setting.
See "Detailed Descriptions - Image
Processing" for details.
Selects the error diffusion matrix filter in
text/photo mode (this SP is used only with
dynamic thresholding).
This adjustment is only effective for the
"Service Mode" original type setting.
See "Detailed Descriptions - Image
Processing" for details.
Normally do not change the value.
4-38
20 September 1999
Settings
0: By key
(as
selected)
1: AE
2: NAE
3: Linear
4: SP
0: By key
(as
selected)
1: AE
2: NAE
3: Linear
4: SP
0: By key
(as
selected)
1: AE
2: NAE
3: Linear
4: SP
6: No.1
7: No.2
6: No.1
7: No.2
0: 105
1: 143
2: 210
3: 270
6: No.1
7: No.2