Sharp AR-810 Imager, Service Handbook, Page: 74 / 350

AR-651/810 ADJUSTMENT 3 - 4
Items to adjust Code
(1) Paper alignment (450) (452) (448) (449) (456)
(455) (457) (458)
a) Reproduction ratio of primary scanning direction
(Fine adjustment of polygonal motor rotation speed) (401)
b) Image position of primary scanning direction
(Laser writing start position) (411) (410)
c) Reproduction ratio of secondary scanning direction
(Fine adjustment of transfer belt motor rotation speed) (488)
d) Image position of secondary scanning direction (439) (440) (441) (443)
(Laser writing start position) (444) (445) (442)
e) Image position of primary scanning direction during
duplex copying (Laser writing start position) (498)
a) Image distortion –
b) Reproduction ratio of primary scanning direction
(Fine adjustment of polygonal motor rotation speed/PPC) (405)
c) Image position of primary scanning direction
(Deviation correction of the scanner primary scanning
start position) (306)
d) Reproduction ratio of secondary scanning direction (340)
e) Image position of secondary scanning direction
(Deviation correction of the scanner secondary
scanning start position) (305)
f) Top margin (430)
g) Right margin (432)
h) Bottom margin (433)
(2
)
Printer related adjustmet
(3)
Scanner related adjustment
3. 3. Dimensional Adjustment of Copied Image
3. 3. 1. Overview
The followings are the items in the copy image dimensional adjustment mode.
The adjustment must be performed in the following order.
Note: By carrying out the scanner related image position adjustment ((3)-b)~e)), an image position at reversing
is adjusted and that at the “Manually-placed original/Non-sort mode” (at which reversing is not
performed) does not come to the same position as adjusted above.
When the image position has to be matched at all modes, carry out a setting so that reversing can be
performed also at the “Manually-placed original/Non-sort mode” (setting mode: 08-627).
However, 0.7sec. of delay at first copy occurs when this setting is carried out.