Bell & Howell S02294A - Manual (Page 34)

Image Scanner User's Manual
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12~6 45 10~8 60 12~8 60 16~8 45
8~4 45 6~6 90 8~6 60 8~8 90
16~16 90 8~8 Bayer Error diffusion
¡ Halftone scanning
Function: Halftone creates the illusion of gray scales by simulating shades of gray from pat-
terns of black and white dots.
Usage: Use halftone scanning when scaning an image with gray shadings such as a photo-
graph, to be printed or displayed on a monochrome device, such as a laser printer.
Halftoning saves memory, so it is convenient for filing a large amount of image
data. This scanner has eleven halftoning methods: ten dithering methods and one
error diffusion method.
Original
03_IS430-BODY 97.5.8, 5:36 PM Page 26 PageMaker 5.0J