Glass Plate Setup and Assembly Manual
Page 23
B.2.1 Auto
Focus
This function automatically locates the lens position for the highest level of sharpness and
best image quality. The book cradles must be in the lowest position. This value is the
reference for all focus adjustments used later; for example during book fold correction,
folder mode scanning or fixed focus scanning.
Perform the function as follows:
1. Place the
Line Reference Target LRT-BE3-x
under the glass plate as shown on the
screen and align it as described above.
2. Press the Autofocus button, the following screen will appear.
Picture 26: “Auto Focus” screen
3. Press the Next Step button. The measurements will be performed.
4. After the Autofocus function has completed, the results will be displayed. As long as
the displayed values are shown in green, the result is ok. Any error will be shown in
red text, followed by some explanatory remarks.
Note:
It is normal that repeating the measurement will return different values each
time. The lens motor has a very high resolution and the best focal point has to
be found in the already large focal range, therefore a variation of 50 – 100 in
values is normal.
5. Click the button New Values in the section
Controls
to repeat the measurement.
Or
6. Click the button Back to Adj. Menu in the section
Menu Controls
to return to the
adjustments menu (see Picture 25).
