Kodak RFS 3570 - Manual (Page 69)

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 Using the KODAK Driver for Adobe Photoshop (Macintosh) G 5-13
Black borders above
and below the image
indicate underscanning . . .
Missing image above
and below the scan
area indicate
overscanning . . .
. . . which occurs at
the negative end of
the slider.
. . . which occurs at
the positive end of
the slider.