381
z
When the [High Compression for Color PDF] button is pressed, characters and
their backgrounds on a document are detected separately, and only the
backgrounds are compressed. For a text based document, the resulting file
size can be smaller while the characters remain clear.
However, note the following:
z
Photographs or pictures are recognized as background and compressed
at a high rate, causing degradation in the scanned image.
z
Thus, this mode is not appropriate for scanning photographs or other
graphical materials.
z
The contrast of the image may become higher.
z
If [High Compression for Color PDF] is selected, according to the type of
document, the file size may be larger than if a standard compression rate is
used.
z
Documents with many photographs or figures and only a few characters
z
Complex layout documents with multiple columns
z
Documents which have a background pattern behind characters
z
For documents with many characters scanned at 300 dpi resolution, a smaller
file size than that of High Compression for Color PDF is possible.
Summary of Contents for ScanSnap N1800
Page 1: ...ScanSnap N1800 Network Scanner Operator s Guide P3PC 3182 01ENZ0 ...
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Page 271: ...271 7 Press the Back button D The Central Admin Console main window appears again ...
Page 355: ...355 D The Main Menu window is shown again ...
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Page 492: ...492 Appendix D Scanner Specifications This appendix gives specifications for the scanner ...
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Page 528: ...528 Appendix G Glossary ...
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