Lead Edge Image Loss Adjustment; Rear Edge Image Loss Adjustment - Sharp MX-1810U Service Manual

Item/Display
A SIDE1
B SIDE2
C Image LEAD_EDGE
loss (SIDE1)
amount
setting
D FRONT_REAR
SIDE1
(SIDE1)
E TRAIL_EDGE
(SIDE1)
F Image LEAD_EDGE
loss (SIDE2)
amount
setting
G FRONT_REAR
SIDE2
(SIDE2)
H TRAIL_EDGE
(SIDE2)
I OFFSET_SPF1
J OFFSET_SPF2
K SCAN_SPEED_SPF1
L SCAN_SPEED_SPF2
* Item A, B: When the adjustment value is increased, the scan
timing is delayed.
* Item C - H: When the adjustment value is increased, the
image loss is increased.
* Item A - H: 1 step = 0.1mm change
* The RSPF rear edge image loss setting is provided for coun-
termeasures against the case when shades are produced.

(Lead edge image loss adjustment)

1) Set the lead edge image loss adjustment values (LEAD EDGE
(SIDE1/SIDE2) on the front surface and the back surface to
the following values.
(Standard set value)
TRAIL EDGE (SIDE 1):
40 Lead edge image loss set value (Front surface)
TRAIL EDGE (SIDE 2):
40 Lead edge image loss set value (Back surface)
(When the set value is increased, the lead edge image loss is
increased.)
(Change for change in the set value: 0.1mm/step)
Setting Default
Content
range value
Front surface 1 - 99
document scan
position
adjustment (CCD)
Back surface 1 - 99
document scan
position
adjustment (CCD)
Front surface lead 0 - 99
edge image loss
amount setting
Front surface side 0 - 99
image loss amount
setting
Front surface rear 0 - 99
edge image loss
amount setting
Back surface lead 0 - 99
edge image loss
amount setting
Back surface side 0 - 99
image loss amount
setting
Back surface rear 0 - 99
edge image loss
amount setting
RSPF front surface 1 - 99
document off-
center adjustment
RSPF back 1 - 99
surface document
off-center
adjustment
RSPF document 1 - 99
front surface
magnification ratio
adjustment (Sub
scan)
RSPF document 1 - 99
back surface
magnification ratio
adjustment (Sub
scan)
MX-3610N ADJUSTMENTS AND SETTINGS 4 – 89
2) Make a duplex copy in 100% in the RSPF mode. Check to
confirm that the lead edge image loss is within 4.0  1.0mm on
the front surface and the back surface. The paper lead edge
50
must be aligned with the presumed image lead edge.
Paper lead edge
50
20
20
40
20
Image loss
4.0 1.0mm
20
If the above condition is not satisfied, perform the following
procedure.
40
3) Enter the adjustment value of SIDE1/SIDE2 with 10-key, and
press [OK] key.
50
Adjust so that the paper lead edge is aligned with the pre-
sumed image lead edge.
SIDE1: Front surface lead edge scan position adjustment
50
SIDE2: Back surface lead edge scan position adjustment
(When the adjustment value is increased, the print image posi-
tion is shifted to the delaying direction for the paper.)
50
(Change for change in the set value: 0.1mm/step)
Perform the procedures of 2) - 3) until a satisfactory result is
obtained.

(Rear edge image loss adjustment)

50
1) Make a duplex copy in 100% in the RSPF mode. Check to
confirm that the rear edge image loss is 2.0 - 5.0mm on the
front surface and the back surface.
Copy image
If the above condition is not satisfied, perform the following
procedure.
The paper lead edge must be aligned with
the image lead edge.
Copy image
Paper rear edge
Image loss 2.0 - 5.0mm