User’s Manual
Fixed Processing: Used for black-and-
white and other high contrast documents. A
single level is set to determine the black-
and-white transition. The threshold is
programmable over the entire density
range. Fixed Processing sets Contrast to
0. If Fixed Processing is selected,
Contrast is not available.
Halftone: In addition to the black and
white display, Halftone can present a
somehow gray shade of image by using
different size of dots. Halftone image looks
like the picture we have seen in the
newspaper. Options include Halftone 1,
Halftone 2, Halftone 3, Halftone 4,
Halftone 5.
Error Diffusion: Error Diffusion is a type
of Halftone. Error Diffusion gives good
image texture and makes text in images
more readable than Halftone.
Halftone Image
4-9
Содержание DF-0902H
Страница 1: ...High Speed Document Scanner User s Manual Regulatory model DF 0902H Avision Inc ...
Страница 34: ...Error Diffusion Image 4 10 ...
Страница 37: ...User s Manual Normal Photo Document Threshold 230 Normal Photo Document Threshold 230 4 13 ...
Страница 48: ...The Compression tab dialog box 4 24 ...
Страница 50: ...The Color Dropout dialog box 4 26 ...
Страница 52: ...Remove Blue Threshold 20 Background 255 Remove Blue Threshold 20 Background Level 210 4 28 ...
Страница 63: ...User s Manual Detection Area Outside the Range Box Top 3 Bottom 7 4 39 ...
Страница 89: ...6 2 Roller ADF Pad ...
Страница 93: ...6 6 6 4 Replacing the ADF Paper Feed Roller 1 Open the ADF cover ADF cover 2 Lift the tabs Tab ...
Страница 95: ...6 8 5 Reinsert the paper feed roller cover and snap it into place 6 Close the ADF cover ...
Страница 104: ...User s Manual 9 3 Normal Rotated 4 60 Transport Timeout 4 33 Ultrasonic Detection 4 40 ...