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Compression Rate
Move the slider bar to change the compression rate.
The compression rate can be changed in five levels from 1 to 5. (By default, the
compression rate is set to 3.)
Moving the slider bar to right increases the compression rate. The higher the com-
pression rate, the smaller the file size, but the image quality is degraded.
This setting takes effect on color images only. When images are saved as mono-
chrome images, this setting is ignored.
[Color High Compression] Checkbox
When this checkbox is marked, image portions in a color image are compressed at
a higher rate separately from text. Therefore, when a document containing mostly
text is scanned, the file size can be made smaller without causing text to become
blurred. This setting is not suitable for scanning photographs and figures because
the image quality of highly-compressed photographs and figures is degraded.
Marking this checkbox increases the system load, which may cause the scanner to
take a very long time to scan.
[OCR] Tab
You can configure settings so that PDF files are converted into searchable text when
they are created from scanned document images.
Unless OCR (optical character recognition) is turned on, scanned document images are
saved as PDF files in a format that computers cannot recognize, or in other words they
are not made searchable. Through OCR, text on the image is recognized and text
information is embedded into the image, making the image file searchable.
(Note that, if you turn on OCR, scanning takes time longer than if you do not.)
[Convert into Searchable PDF] Checkbox
The scanned document images are converted into searchable PDF files and saved.
Language
You can select a language to use for text recognition from the following:
English, French, German, Italian, Japanese, Korean, Spanish, and Traditional/Sim-
plified Chinese.