Ricoh ISO1 Operation Manual - Page 64
Halftone scanning
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SCANNER FEATURES Halftone scanning Function Usage Creates the illusion of gray scales by simulating shades of gray from patterns of black and white dots. Use halftone scanning when you are scanning an image that has gray shadings (for example, a photograph) when you want to print or display the image on a monochrome device, such as a laser printer. Halftoning requires less memory. Therefore, it is convenient for filing a large amount of image data. This scanner has eleven halftoning methods, including ten dithering methods and one error diffusion. Original 8X4 45° 6X6 90° 8X6 60° 8X8 90° 12X6 45° 10X8 60° 12X8 60° 16X8 45° 16X16 90° 8X8 Bayer Error diffusion A-6
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SCANNER FEATURES
A-6
Halftone scanning
Function
Creates the illusion of gray scales by simulating shades of gray
from patterns of black and white dots.
Usage
Use halftone scanning when you are scanning an image that has
gray shadings (for example, a photograph) when you want to print
or display the image on a monochrome device, such as a laser
printer. Halftoning requires less memory. Therefore, it is convenient
for filing a large amount of image data. This scanner has eleven
halftoning methods, including ten dithering methods and one error
diffusion.
8X4 45°
6X6 90°
8X6 60°
8X8 90°
12X6 45°
10X8 60°
12X8 60°
16X8 45°
16X16 90°
8X8 Bayer
Error diffusion
Original