Front/Back Sides Skew Correction In Main Scan Direction; Back Side Magnification Adjustment In Sub Scan Direction - Develop ineo+ 6500 Service Manual

Theory of Operation Ver1.0 Sep.2006
D. Operation condition of the color registration control
The color registration control is performed when:
• Operation condition 1
The color registration automatic correction is executed in the service mode.
Be sure to perform the above operation when replacing components listed in "9. LIST OF ADJUSTMENT
ITEMS" in Field Service manual.
• Operation condition 2
During warm-up. However, it is not performed if 70 degrees C or higher of fusing temperature is detected
when starting the warm-up.
• Operation condition 3
The prescribed number of pages are copied/printed.
• Operation condition 4
A copy/print job is received after the specified time passed.
• Operation condition 5
Changes in temperature detected by the temperature detection board (TDB) fall outside the prescribed
range. The control is performed when a copy/print job is received first time after the status occurs.
NOTE
• In case of the Operation condition 3, the registration control is performed interrupting the copy/
print job. This can be changed with DIPSW in service mode to carry out the control after finishing
a copy/print job.
• In case of the Operation condition 4 and 5, the color registration correction control is performed at
the beginning of the first copy/print after unity of the operating condition.
8.2.4

Front/back sides skew correction in main scan direction

• If a black image written by the write unit /K is skewed in the main scan direction when performing duplex
printing, black images finally printed on front and back sides of paper will be skewed in opposite way.
• The inclination of the CY2 lens2 of the write unit /K should be adjusted in order to correct the skew.
• The adjustment can be made manually using the following menus.
User's mode: chart adjustment
Service mode: CD skew adjustment
8.2.5

Back side magnification adjustment in sub scan direction

• When the back side mag. adjustment is enabled with the utility, the adjustment is carried out by changing
the number of revolutions of the polygon motor.
• In order to reduce magnification rate in sub scan direction, the number of revolutions of the polygon motor
increases lowering the clock rate.
• The magnification reduction rate can be set manually using the following menus.
User's mode: chart adjustment
Service mode: FD mag. adjustment
8. WRITE SECTION
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