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Function__s
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Hal~one Scanmng
Halftone scanning converts the original into an tmage consisting of pseudo-halftones produced
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by dot shading (m wtuch shading is actueved through combmaUons of black and wlute dots, as
m newspaper photographs) Ttus function ~s used to output an original that has intermediate
tones such as a photo, on an output dewce that can only produce monochrome output, such as a
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laser printer
Because halftone scanning expresses pseudo-halftones, ~t does not reqmre as much memory,
making ~t effectave for filing a large volume of maages There are eleven types of halftones (ten
dot shading patterns and one error dtffus~on pattern) for selection It ~s also possible to scan and
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download your own dot shading patterns
The names m parentheses indicate the names under the ISIS driver
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Ongmal
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~a.
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.,$
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=. .:": ¯ -.:~ ::! ".:."
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8x4
45
°
6x6
90
°
8x8
90
°
16x8
45
°
16x16
90
°
4x4 Sp=ml
8x8
Bayer
Errord=ffuson
47
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