Imacon Flextight Progression UserÕs Guide
Hardware ReferenceÑFlextight Progression
Calibrating the Scanner
27
English
5.
Choose the resolutions for which you want to calibrate. By default,
all resolutions are marked and will therefore be calibrated. To pre-
vent one or more resolutions from being calibrated, click on the
appropriate box to remove the mark. We recommend that you cali-
brate for all resolutions for both the drum and ßatbed. However, if
you are only having focus problems with a particular type of scan
or at particular resolutions, you can save some time by choosing
only those types of scans that are giving you trouble.
6.
Click on the
Calibrate
button. The scanner will focus for each of the
selected resolutions and calibrate for each of them (one at a time).
7.
When the calibration is Þnished, each of the completed calibrations
will show a scanner icon. Click on
Done
to close the
Focus Calibra-
tion
window.
White Calibration for Reflectives
The Flextight scanner uses a white reference to make sure that all ele-
ments in the scannerÕs CCD react consistently to bright light. You must
make two white calibrations: one using a white target mounted on the
electrostatic plate and one with the target mounted between the glass
plates.
The Þrst time you make a reßective scan using the electrostatic or glass
plates, a window will appear reminding you to make a white calibra-
tion. Thereafter, the calibration will be stored on your computerÕs hard
disk. We recommend that you make both types of white calibrations at
the same time (above and below the glass plate), because if you make
only one type, the reminder will not appear again if you make a scan
later using the other type of ßatbed mounting.
As the scanner ages, the properties of the light tubes may change
slightly. Therefore, you must redo the white calibration every six
months or so and immediately after changing the light tubes. Note also
that because the white calibration information is stored on your com-
puterÕs hard disk, you must make a white calibration each time you
move the scanner to a new computer.
Use the procedure below to make a white calibration.
1.
Find the white calibration sheet that came with your scanner. It is a
plain white piece of paper (510 x 329 mm (20Ó x 13Ó)).
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