Canon imageRUNNER C3480, Manual

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Adjusting the Contrast (Sharpness) 4-85
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Adjusting the Contrast (Sharpness)
This mode enables you to scan and record, or make copies of the originals with a
sharper or softer contrast. To reproduce text or lines with a sharper contrast, use
[High] as the setting. To scan/copy originals containing printed photographs or
other halftones with a softer contrast, use [Low] as the setting.
IMPORTANT
For information on the modes which cannot be set in combination with this mode, see
"Combination of Functions Chart," on p. 9-6.
■
Low
If you make copies, or scan an original containing halftones, such as a printed
photograph, using the Printed Image mode, the moiré effect (a shimmering, wavy pattern)
may occur. However, you can lessen this moiré effect by using [Low] as the setting to
produce a clearer copy (image).
■
High
This setting enhances the edges of original images so that faint or fine text is reproduced
with a sharper contrast. This setting is particularly suited to scanning and copying
blueprints and faint pencil drawn images.
Original Copy
Low Set Low Not Set
Original Copy
High Set High Not Set