Kodak 2400DSV - Manual (Page 59)

4 Mechanical and Electrical
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4.6 Auto Masking
4.6.1 Overview
If a print is made from an image that is projected smaller than the Markers
on the screen, the non-image areas of the film result in black bands
running around the image on the print.
The Auto Masking Function Automatically detects the non-image areas of
the film.
4.6.2 Masking Area Detection
The CCD Board (PWB-A) is detects the density of the film image.
If Auto Masking is selected on the control panel, the CCD Board (PWB-A)
detects the masking area (By measuring the intensity of light) while the
Scan Mirror makes a prescan motion.
4.6.3 Requirements for Auto Masking
● Film Requirements
Negative Positive
Film Base Density 0.2 or less 0.8 or more
Background Density 0.8 or more 0.2 or more
Screen
Main Scanning Direction
(CCD)
Feed Direction
(scanning direction)