Table of Contents
Advertisement
14 August 1997
Mode No.
Class 1
Class 2
2 *
3
4 *
4903 *
5 *
6
7 *
8 *
9 *
Input the setting for all 8 bits at once
as a decimal value.
(e.g. To set the MTF filter strength of
the the generation mode to 'weak',
the input value should be 16 as
shown below, assuming all other
parameters are at the 'zero' setting.
The type of filter used in Photo mode
depends on the setting of SP4904-3.
GA 3 Setting
Selects the coefficients and strengths
(Filter Mode)
of the MTF filter and smoothing filter.
Do not change the value.
Not used
GA 3 Setting
Changes the threshold level for dot
(White
screen detection processing.
Threshold)
Do not change the value.
GA3 Setting
Selects whether the copy image is
(Full Size)
always in the full size mode even if
the magnification ratio has been
changed.
This SP mode is used for checking
the magnification function in the main
scan direction, which is performed by
the GA3 chip.
GA 3 Setting
Prints the test pattern for the GA3 or
(Test Pattern
selects one of the following video
Output)
data outputs for printing.
0. Normal
1. Test pattern print out
2. Skips the magnification
processing.
3. Skips the filter processing
4. Skips the GA3 functions
This SP mode is used for checking
the GA3 functions.
GA 3 Setting
Changes the image shift amount for
(Main Shift
the main scan direction in
High)
magnification mode.
GA 3 Setting
Do not change the values of 4903-
(Main Shift Low)
7 and 4903-8.
GA 3 Setting
Changes the threshold ratio for auto
(Switch
text/photo separation processing.
Separation)
Function
o
00010000
16
29
SP MODE
Settings
0 ~ 16
1 /step
3
0 ~ 255
1 /step
80
0: Normal
Operation
1: Always full
size mode
0 ~ 255
1 /step
0
25 ~ 255
1 %/step
170 %
Advertisement
Table of Contents
