MX-3114N ADJUSTMENTS AND SETTINGS 5 – 20
3)
Check for distortion in the sub scanning direction.
If La = Lb, there is no distortion.
If there is any distortion in the sub scanning direction, perform
the following procedures.
4)
Loosen either one of the fixing screws of the scanner unit drive
pulley. (Either one on the front frame or on the rear frame will
do.)
5)
Without moving the scanner unit drive shaft, manually turn the
scanner unit drive pulley to change the parallelism of the scan-
ner unit A and B. (Change the relative position of the scanner
unit drive pulley and the drive shaft.)
6)
Tighten the scanner unit drive pulley fixing screw.
Repeat the procedures 2) - 6) until the condition of the procedure 3)
is satisfied.
6-C
Scan image (main scanning direction)
distortion adjustment
1)
Make a test chart on A3 (11" x 17") paper as shown below.
(Draw a rectangular with four right angles.)
2)
Set the test chart prepared in the procedure 1) on the docu-
ment table, and make a copy on A3 (11" x 17") paper.
3)
Check for distortion in the main scanning direction.
If the four angles of the rectangle of the copy image are right
angles, it is judged that there is no distortion. (The work is
completed.)
If there is any distortion in the main scanning direction, perform
the following procedure.
4)
Check the difference (distortion balance) between left-hand
and right-hand side images distortions.
If Lc = Ld, the distortion on the left is equal to that on the right.
(The distortions are balanced.)
If the above condition is satisfied, go to the procedure 6).
If not, perform the following procedures.
5)
Change the height balance of the scanner rail on the front
frame side.
Remove the lower cabinet of the operation panel. Loosen the
scanner rail fixing screw to change the balance between the
right and the left heights of the scanner rail.
Repeat the procedures 2) - 5) until the difference between the
image distortions (distortion balance) is deleted.
6)
Without changing the balance of the scanner rail on the front
frame side, change the overall height.
7)
Set the test chart prepared in the procedure 1) on the docu-
ment table, and make a copy on A3 (11" x 17") paper. Check
that the distortion in the main scanning direction is within the
specified range.
Repeat the procedures 6) and 7) until the distortion in the main
scanning direction is in the specified range.
La
Lb
L
L
L = 10mm
L
L
Lc
Ld
Copy A
Lc
Ld
Copy B
There is no difference
between the distortion on
the right and that on the left.
Lc
Ld
Lc
Ld
There is some difference
between the distortion on
the right and that on the left.
