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AR-SP8/RP8 ADJUSTMENTS 5 - 2
3. Duplex adjustment (RSPF)
A. Adjusting the paper reverse position in memory
for duplex copying
This step adjusts the front surface printing (odd-number pages of a
document set) in the S-D mode copying and the leading edge position
of an image on even-number pages in the D-S mode.
document set) in the S-D mode copying and the leading edge position
of an image on even-number pages in the D-S mode.
That is, it covers the adjustment of the second surface printing mode
(image loss at the front edge of an image) in which image data is once
stored in memory.
(image loss at the front edge of an image) in which image data is once
stored in memory.
The image data is read, starting from its front end in the document
delivery direction (Reference direction of document setting in the OC
mode)and stored in memory.
delivery direction (Reference direction of document setting in the OC
mode)and stored in memory.
This stored image data is printed starting at the printing start position,
in the order of last-stored data to the first-stored data.
in the order of last-stored data to the first-stored data.
In other words, the front edge image loss of the image can be adjusted
by changing the document read end position.
by changing the document read end position.
(Adjustment procedure)
1) Preparing test chart (Draw a scale at the rear end of one side of a
sheet of A4 white paper or letter paper)
2) Set the test chart so that the scale is positioned as shown below, in
the S-D mode and the D-S mode.
3) Execute test command 50-18.
Select the SPF memory reverse output position, and press
[START] key to make a copy.
[START] key to make a copy.
Adjust the setting so that the front edge image loss is less than 4.0
mm in the R-SPF mode.
An increase of 1 in setting represents an increase of 0.1 mm in
image loss.
mm in the R-SPF mode.
An increase of 1 in setting represents an increase of 0.1 mm in
image loss.
B. Adjusting trailing edge void in duplex copy mode
This is the adjustment of the first surface printing mode (rear end void)
in duplex copying.
in duplex copying.
In a duplex copying operation, the paper is delivered starting from the
rear end of the first printing surface. It is therefore necessary to make a
void area at the rear end on the first printing surface to prevent paper
jam at the fusing part.
rear end of the first printing surface. It is therefore necessary to make a
void area at the rear end on the first printing surface to prevent paper
jam at the fusing part.
There are two adjustment modes:
1) Image cut rear end void quantity (R-SPF) 50-19 (SCAN mode
lamp)
The size (length) of a document read from the R-SPF is detected,
the image at the trailing edge of the first printing surface is cut to
make a void area. (The adjustment of void quantity at the time
when the cassette paper size is not recognized.)
The size (length) of a document read from the R-SPF is detected,
the image at the trailing edge of the first printing surface is cut to
make a void area. (The adjustment of void quantity at the time
when the cassette paper size is not recognized.)
2) Paper trailing edge void quantity 50-19 (PRINT mode lamp)
This adjustment is made when the cassette paper size is
recognized. The trailing edge void quantity can be adjusted by
changing the trailing edge image laser OFF timing.
recognized. The trailing edge void quantity can be adjusted by
changing the trailing edge image laser OFF timing.
The paper void quantity should be first adjusted before the image cut
trailing edge void quantity (R-SPF) is adjusted.
trailing edge void quantity (R-SPF) is adjusted.
The adjustment modes can be selected by pressing [
←
/
→
] key.
(Adjustment range; 1 – 99)
Enter the adjustment value and press [START] key to save the set
value and make a copy. (The paper information is cleared for every
copy.)
value and make a copy. (The paper information is cleared for every
copy.)
When the set value is increased by 1, the void amount is increased by
about 0.1mm.
about 0.1mm.
* The initial value of duplex setting is 2to2.
(Adjustment procedure)
(1) Paper trailing edge void quantity
1) Preparing test chart (Draw a scale at the rear end of one side of a
sheet of A/4 white paper or letter paper)
2) Set the test chart on the document glass as shown below.
Mode
Display
item
Default
LED
OC memory reverse
output position
output position
OC
50
COPY mode lamp
SPF memory reverse
output position
output position
SPF
50
PRINT mode lamp
5 10
Scale (S-D mode)
Scale (D-S mode)
5 10
The front edge of the
scale on test chart
scale on test chart
Front edge of paper
Void area
less than 4 mm
Mode
Display
item
Default
LED
Paper rear edge void
amount
amount
DEN-B
50
PRINT mode lamp
Print start position (Duplex
back surface)
back surface)
RRC-D
50
SCAN mode lamp
2nd printing surface where scale is printed (lower side)
Document guide
The trailing edge has a scale
Table glass
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