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Appendix A Duo Microfilming
Reversing and reloading
duo film
44
If duo microfilming mode is desired, a special mask must be ordered
from and installed by your Equipment Service Representative for Kodak
products. The mask prevents the other half of the film from being
exposed to light.
In duo mode, the front side of a document is microfilmed on one half of
the film width while the other half of the film remains unexposed. The
spool is turned over and reloaded to expose the second side after the roll
has been fully exposed on one side.
An audible alarm will sound and the supply indicator will be at or near the
clear circle when the first side has been fully exposed.
To load the second side:
1. Remove any remaining documents from the feeder.
2. Press the fast film advance switch to wind any remaining film onto
the take-up spool. The trailer, attached to the end of the film, will
protect the film from room light when the roll is removed and turned
over for reloading.
3. Turn off the microfilmer.
4. Remove the cassette and lay it on a flat surface with the latch up.
5. Press down on the latch, turn it counterclockwise, and remove the
cassette cover.
6. The take-up spool contains a roll of film with half of its width
exposed.
NOTE: Put a gummed label on the No. 2 side of this spool to
indicate you are microfilming in duo mode.
7. Rotate the supply alarm arm away from the empty supply spool and
remove the spool.
8. Remove the full duo take-up roll and turn it over before placing it on
the supply spindle. Make sure that side No. 2 is up.
9. Using the empty spool as the take-up spool, reload the cassette just
as though it were a new roll of unexposed film. Make sure that the
supply side shows the No. 2 side of the spool or that the gummed
identifying label is up.
10. Place the cassette in the microfilmer. Press the fast film advance
once, and continue microfilming.
11. When both sides of the duo film have been exposed, unload the
cassette as previously described and package the film prior to
processing. The take-up roll will not display the duo label, indicating
that both sides of the film have been exposed.
NOTE: Avoid unloading partial rolls of film if you are using the duo
mode to avoid wasting the unexposed portion of the film. Do
not unload the film until the end of the roll if side two has
already been started.
A-61036 July 2000
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