Adf Image Skew Adjustment - Riso RN SERIES Technical Manual

CHAPTER 12. ADF SCANNING SECTION

ADF IMAGE SKEW ADJUSTMENT

5. ADF Image Skew Adjustment
Checks and procedure
(1) Place a sheet of B4 size paper on the paper feed tray, and make a master of test chart No. 15
using the ADF unit.
(2) Lay the print on top of the original with the 310-mm lines at the side parallel, and check that the
skew (X) of the leading 160-mm line is within 2 mm.
(3) If the skew is outside the specified parameters, adjust as follows.
• Remove the screw (M4 x 6) on the ADF mount plate [A], rotate through 180° to open the ADF unit
to 90°, and then loosen the two ADF unit retaining screws (M4 x 10).
• Loosen the nut [B] on the hinge assembly (right), and turn the ADF slide screw [C] (clockwise if
as in Figure 2, and counter-clockwise if as in Figure 1) to adjust dimension T. Turning the screw
clockwise increases dimension T.
• Tighten the two ADF unit retaining screws, and then tighten the nuts with the ADF slide screw
secured.
• Make a master and print, and repeat the procedure from the beginning if the skew is still outside
the specified parameters.
A
B
A: ADF mount plate
B: Nut
C: ADF slide screw
Bottom
Figure 1
X
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RN (Version 1.0)
X
Top
Figure 2
C
T