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Mounting Originals on the External Drum
Chapter 6 Mounting Originals
on the External Drum
Introduction
The external drum is illustrated in Fig. 1.3. This drum
can be used for mounting any type of original up to
476 mm
×
320 mm in size. Alternatively, you can
mount any number of smaller originals.
Transparencies, reflection copy and colour
negatives can all be mounted, in any combination.
Originals are mounted on the
outside
surface of the
external drum.
Arranging Originals
on the Drum
Almost the full perspex area of the external drum is
available for mounting your originals. A line is
engraved along the length of the drum which
corresponds to the left-hand edge of the Macintosh
screen when a full drum scan is made.
Fig. 1.4 illustrates this for both the normal (right-
reading) and lateral reversal (wrong reading)
scanning cases. (Notice that the drum boss is at the
top
in Fig. 1.4. This means that when the drum is
fitted to the scanner, the originals are
upside-down
.)
The engraved line is therefore the starting point for
mounting the originals. In theory you can go right up
to the line with the edge of an original like number 1
or 2 in Fig. 1.4. However, in practice it is advisable
to allow a few millimetres to make quite sure that the
edge is not lost from the Macintosh screen when the
full drum is scanned.
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Summary of Contents for 360
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