Read Sharp MX-M850 (serv.man36) Service Manual online
MX-M1100 ADJUSTMENTS 6 – 8
2)
Loosen the developing doctor blade fixing screw.
3)
Insert a thickness gauge of 0.42mm into the gap of 40mm -
70mm from the edge of the developing doctor blade.
70mm from the edge of the developing doctor blade.
4)
Push the developing doctor blade in the direction of the devel-
oping roller (arrow direction), and tighten the fixing screw of
the developing doctor blade. (Perform the similar procedure for
the front frame and the rear frame.)
oping roller (arrow direction), and tighten the fixing screw of
the developing doctor blade. (Perform the similar procedure for
the front frame and the rear frame.)
5)
Check to confirm that the doctor gap is in the range of 0.42
±
0.025mm at two positions in 40mm - 70mm from the both
sides of the developing doctor blade. When inserting the thick-
ness gauge, be sure not to scratch the developing doctor
blade and the developing roller.
ness gauge, be sure not to scratch the developing doctor
blade and the developing roller.
2-B
Developing roller main pole position
adjustment
adjustment
The check and the adjustment are required in the following cases:
* When the developing unit is disassembled.
* When the print image density is too low.
* When there is a thin spot on a print image.
* When the print image density is uneven.
* When there is abnormally much toner dispersion.
1)
* When the developing unit is disassembled.
* When the print image density is too low.
* When there is a thin spot on a print image.
* When the print image density is uneven.
* When there is abnormally much toner dispersion.
1)
Place the developing unit on a flat surface.
2)
Remove developer from the developing roller.
3)
Put a string on a needle or a pin. (Do not use a paper clip,
which cannot provide an accurate position.)
which cannot provide an accurate position.)
4)
Hold the string, and put the needle closer to the developing
roller.
roller.
5)
With the needle 2 - 3mm apart from the developing roller, mark
the intersect of the extended line and the developing roller sur-
face. (Do not bring the needle into contact with the developing
roller.)
the intersect of the extended line and the developing roller sur-
face. (Do not bring the needle into contact with the developing
roller.)
6)
Measure the height of the marking position, and check to con-
firm that it is 60.5
firm that it is 60.5
± 0.5mm.
If the height is not in the above range, adjust the developing
roller main pole position by the following procedure.
Loosen the fixing screw of the developing roller main pole
adjustment plate, and move the adjustment plate in the arrow
direction to make an adjustment.
roller main pole position by the following procedure.
Loosen the fixing screw of the developing roller main pole
adjustment plate, and move the adjustment plate in the arrow
direction to make an adjustment.
Repeat the procedures 4 thru 6 until the developing roller main
pole position is within the specified range.
After completion of the adjustment of the developing roller
main pole position, tighten the fixing screw of the developing
roller main pole adjustment plate.
pole position is within the specified range.
After completion of the adjustment of the developing roller
main pole position, tighten the fixing screw of the developing
roller main pole adjustment plate.
70mm
40mm
70mm
40mm
0.42 0.025mm
+
-
0.42 0.025mm
+
-
2 3mm
60.5 0.5mm
+
-
60.5 0.5mm
+
-
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