ADJUSTMENTS 10 - 6
1) Making of a test sheet
Make test sheet by drawing parallel lines at 10mm from the both
ends of A3 (11" x 17") white paper as shown below. (These lines
must be correctly parallel to each other.)
2) Make a normal (100%) copy of the test sheet on A3 (11" x 17")
paper. (Fit the paper edge with the glass holding plate edge.)
3) Measure the distances (La, Lb, Lc, Ld) at the four corners as shown
below.
When La = Lb and Lc = Ld, no need to perform the procedures 4) and 5).
4) Move the mirror base F rail position up and down (in the arrow
direction) to adjust.
Note:Do not adjust the rail on the rear side.
If the rail on the rear side is adjusted, a trouble may be caused.
Only the rail on the front side can be adjusted.
<Adjustment specification>
La = Lb, Lc = Ld
5) After completion of adjustment, manually turn the mirror base drive
pulley, scan the mirror base A and mirror base B fully, and check that
the mirror bases are not in contact with each other.
*
If the mirror base rail is moved extremely, the mirror base may be in
contact with the frame or the original glass. Be careful to avoid this.
(5) Main scanning direction (FR direction) magnification
ratio adjustment (SIM 48-1)
Note:Before performing this adjustment, be sure to check that the CCD
unit is properly installed.
1) Put a scale on the original table as shown below.
2) Execute SIM 48-1.
3) After warm-up, shading is performed and the current set value of the
main scanning direction magnification ratio is displayed on the
display section in 2 digits.
4) Select the mode and press the [START] key again.
5) Manual correction mode (TEXT indicator ON)
Enter the set value and press the [START] key.
The set value is stored and a copy is made.
10mm
10mm
10mm
10mm
Parallel line
White paper
Parallel line
La
Lb
Ld
Lc
Paper exit
direction
When La > Lb
Shift the mirror base B rail upward by the half of the
difference of La - Lb.
When La < Lb
Shift the mirror base B rail downward by the half of the
difference of Lb - La.
Example: When La = 12mm and Lb = 9mm, shift the mirror
base B rail upward by 1.5mm.
When Lc > Ld
Shift the mirror base B rail downward by the half of the
difference of Lc - Ld.
When Lc < Ld
Shift the mirror base B rail downward by the half of the
difference of Ld - Lc.
When moving the mirror base rail, hold the mirror base rail
with your hand.
