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Service Manual
6-4-3-2.
Film Platen
The optics system of the 8150 IMAGER is an internal drum scanning system, which focuses a scanning
laser beam onto the internal surface of a semi-cylindrical drum. Film is held stationary in the platen during
imaging. The scanning angle for film in the platen is 180 degrees, covering a nominal distance of 17
inches for line scanning. The optics module is "translated" down the page while scanning occurs, to image
the complete page. The nominal travel distance of the optics module at specified translation speed is 14
inches. This method of scanning generates an image on 14 by 17 inch film with the scan line in the
vertical (17 inch) direction, as opposed to the typical horizontal direction.
6-4-3-3.
Optics Module
Functions of the optics module are described in the following paragraphs. Locations of the optics lenses
are shown in Figure 6-9.
6-18
Scan Line
Rotating
Mirror
Scanner
Beam
Power
Attenuator
Laser
Folding
Beam
Mirror
Figure 6-8. Laser Optics - - Schematic
Film in
Cylindrical
Platen
Beam
Shaping
Optics
Laser
Optics
Translation
8100-140L
7F3318
2005 July Rev. B
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Troubleshooting
