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8 - 14
2020/4820/4820 i User’s Guide
This filter typically provides better JPEG compression than the standard E -
Edge Sharpen command (see
page 8-15
). This filter also works well when
shipping pure black and white images (1 bit per pixel). The optimal setting
is 26U.
0U
Document image filter off
(default)
26U
Apply document image filter for typical document image
nU
Apply document image filter using grayscale threshold n. Use
lower numbers when the image contrast is lower. 1U will have a
similar effect to setting
E - Edge Sharpen
(page 8-7) to 22e.
Range: 0-255.
V - Blur Image
Smooths transitions by averaging the pixels next to the hard edges of
defined lines and shaded areas in an image.
0V
Don’t blur
(default)
1V
Blur
Example of Document Image
Filter set to 0U:
Example of Document Image
Filter set to 26U:
Example of Blur Image Off (0V):
Example of Blur Image On (1V):
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Страница 280: ...Hand Held Products Inc 700 Visions Drive P O Box 208 Skaneateles Falls NY 13153 0208 4820 UG Rev D 3 08 ...