8825/8830 DDS User Guide/23
Making copies
Adjusting Image Quality (continued)
Some documents require additional adjustments to obtain the best copy
quality. Documents of good quality will usually give good copies on the first
attempt. Documents of bad quality may require more than one attempt,
using different settings, to obtain the best copy quality.
• What is a good quality document? describes the characteristics of
documents that are easiest to scan.
•
What is a bad quality document? shows several examples of problem
documents that require more attention.
•
Scanning lists the different approaches to take when scanning good
quality or bad quality documents.
•
Preparing documents provides tips for getting documents ready to
scan and for organizing them for efficient scanning.
What is a good quality document?
Good quality documents are easy to scan. They usually require no
adjustments to the default values to create good line drawing images.
A good quality document has
all
of these characteristics:
•
High contrast between foreground (the image of interest) and
background. The foreground may be color or black.
•
Foreground is a solid, high-density black or dark color (or dark blue on a
blueprint, or dark brown on a sepia). Foreground density is uniform.
There is only one kind of foreground (for example, there are no pencil
additions on a blueprint). If the document is of mixed type, the
foreground is color.
•
If the document is white on black or white on blue, the foreground is
clear white or nearly white, and the background is a solid, high density
black or dark color.
•
Background is white or light-colored, and is free of speckling or other
noise. Background density is uniform.
•
The document has no creases, stains, tears or extraneous marks that
the Scanner might interpret as foreground.
4”
4”
Foreground
Background
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