Read Sharp AR-505 (serv.man9) Service Manual online
If this setting is not made properly, the image lead edge posi-
tion (image loss) on the copy paper may vary depending on
the copy magnification ratio.
When the set value is increased, the image position is shifted
in the advancing direction of the copy paper.
When the set value is changed by 1, the image lead edge posi-
tion is changed by about 0.1mm.
tion (image loss) on the copy paper may vary depending on
the copy magnification ratio.
When the set value is increased, the image position is shifted
in the advancing direction of the copy paper.
When the set value is changed by 1, the image lead edge posi-
tion is changed by about 0.1mm.
(RRC-B)
This set value is used to adjust the relative positions of the im-
age position on the OPC drum and the copy paper.
This adjustment is made by adjusting the time from the output
timing of the image lead edge signal (LD START signal) to
RRC ON.
At the timing of LD START signal output, the print image is
made on the OPC drum at an optional position with the laser
beam.
Actually the RRC ON timing is determined as follows:
RRC ON timing = This set value (RRC-B) - Lead edge void set
value (DEN-A)
When the set value is increased, the RRC ON timing is de-
layed, decreasing the led edge void area.
When the set value is changed by 1, the lead edge void area is
changed by about 0.17mm (about 0.21mm for AR-4XX series;
about 0.24mm for AR-5XX series).
This set value is used to adjust the relative positions of the im-
age position on the OPC drum and the copy paper.
This adjustment is made by adjusting the time from the output
timing of the image lead edge signal (LD START signal) to
RRC ON.
At the timing of LD START signal output, the print image is
made on the OPC drum at an optional position with the laser
beam.
Actually the RRC ON timing is determined as follows:
RRC ON timing = This set value (RRC-B) - Lead edge void set
value (DEN-A)
When the set value is increased, the RRC ON timing is de-
layed, decreasing the led edge void area.
When the set value is changed by 1, the lead edge void area is
changed by about 0.17mm (about 0.21mm for AR-4XX series;
about 0.24mm for AR-5XX series).
(Note)
The value of RRC-A must be properly set in advance to this
adjustment.
The value of RRC-A must be properly set in advance to this
adjustment.
(IMAGE LOSS)
This set value (timing adjustment value) is used to determine
the lead edge image loss and the image lead edge reference
position by using the scan image lead edge position set with
RRC-A.
Effective print data is determined from the image lead edge po-
sition data scanned with this set value.
The image lead edge reference position on the document is at
2mm from the right of the document position alignment plate.
This set value (timing adjustment value) is used to determine
the lead edge image loss and the image lead edge reference
position by using the scan image lead edge position set with
RRC-A.
Effective print data is determined from the image lead edge po-
sition data scanned with this set value.
The image lead edge reference position on the document is at
2mm from the right of the document position alignment plate.
The effective image (effective image data) is determined by
scanning the image.
When the set value is increased, the image loss becomes
greater.
When the set value is changed by 1, the image loss is
changed by about 0.1mm.
scanning the image.
When the set value is increased, the image loss becomes
greater.
When the set value is changed by 1, the image loss is
changed by about 0.1mm.
(DEN-A)
Used to set the timing for the RRC ON timing (paper timing)
set with EEC-B.
RRC ON timing = (RRC-B) - Lead edge void set value (DEN-A)
When this adjustment value is changed, the print image posi-
tion for the paper position is changed. As a result, the lead
edge void area is also changed.
When the set value is increased, the RRC ON timing is ad-
vanced and the lead edge void area becomes greater.
When the set value is changed by 1, the lead edge void area is
changed by about 0.1mm.
Used to set the timing for the RRC ON timing (paper timing)
set with EEC-B.
RRC ON timing = (RRC-B) - Lead edge void set value (DEN-A)
When this adjustment value is changed, the print image posi-
tion for the paper position is changed. As a result, the lead
edge void area is also changed.
When the set value is increased, the RRC ON timing is ad-
vanced and the lead edge void area becomes greater.
When the set value is changed by 1, the lead edge void area is
changed by about 0.1mm.
(DEN-B)
The rear edge void area is adjusted by controlling the effective
print data length with the image lead edge signal (LD START
signal) output from the ICU as the reference.
The rear edge void area is adjusted by controlling the effective
print data length with the image lead edge signal (LD START
signal) output from the ICU as the reference.
The effective image (effective image data) is determined when
scanning the image.
When the set value is increased, the rear edge void area be-
comes great.
When the set value is changed by 1, the rear void area is
changed by about 0.1mm.
scanning the image.
When the set value is increased, the rear edge void area be-
comes great.
When the set value is changed by 1, the rear void area is
changed by about 0.1mm.
(REAR LOSS (SPF))
Used to adjust the rear edge image loss in the SPF copy
mode.
Used to adjust the rear edge image loss in the SPF copy
mode.
The greater the set value is, the greater the rear edge image
loss is.
When the set value is changed by 1, the rear edge image loss
is changed by about 1mm.
loss is.
When the set value is changed by 1, the rear edge image loss
is changed by about 1mm.
Adjust in the following sequence:
1) Set the image loss amount (IMAGE LOSS) and the paper lead
edge void amount (DEN-A) to arbitrary values (20).
(0~99: 0.1mm/step)
2) Adjust the document scan start position (RRC-A) so that the
actual copy image loss becomes the value set in procedure 1.
(0~99: 0.24mm/step) (0.29mm/step (AR-4XX/5XX series))
(0~99: 0.24mm/step) (0.29mm/step (AR-4XX/5XX series))
3) Adjust the resist roller clutch ON timing (RRC-B) so that the ac-
tual copy image loss becomes the value set in procedure 1.
(0~99: 0.17mm/step)
(0~99: 0.17mm/step)
4) In the SPF copy mode, adjust the SPF image position (SPF) to
the value set in procedure 1). (0~99, 0.1mm/step)
5) Adjust the rear edge image loss (REAR LOSS (SPF)) in the
SPF copy mode. (0~20, 1mm/step) (AR-
2X1/3X1/4XX/250/XX6 series only)
2X1/3X1/4XX/250/XX6 series only)
6) Adjust the rear edge void amount (DEN-B). (0~99:
0.1mm/step)
(AR-501/505)
(Other models)
50 - 2
Purpose
Adjustment
Function
(Purpose)
(Purpose)
Used to adjust the copy image position and the void
area (image loss) on the print paper in the copy mode.
area (image loss) on the print paper in the copy mode.
(Simple adjustment)
(This simulation allows the same simulation with SIM
50-1 more simply. )
(This simulation allows the same simulation with SIM
50-1 more simply. )
Item
Picture quality
Image position
Operation/
Procedure
Procedure
1. Select the adjustment item with [
↑
], [
↓
] keys.
2. Enter the adjustment value with the 10-key.
3. Press the [OK] key. (The value entered in procedure 2 is set.)
IMAGE LOSS
DEN-A
DEN-B
DEN-A
DEN-B
Same as SIM 50-1
This simulation is used to automatically adjust the image loss, the
void area, and the image position by directly entering the paper
lead edge and the image shift (in the unit of 0.1mm) in 400%
(200% for the SPF) copy.
void area, and the image position by directly entering the paper
lead edge and the image shift (in the unit of 0.1mm) in 400%
(200% for the SPF) copy.
a. Distance (Document table mode 400%) up to the scale of
10mm from the image lead edge a L3
AR-505
7 – 39
10/8/1999
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