Xerox 7675 - Manual (Page 23)

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Flate Compression
Select Enabled or Disabled. Flate is a lossless compression algorithm based on two other algorithms:
Huffman compression and LZ77 (the first LZW). Huffman compression is a lossless algorithm ideal for
compressing text. LZ77 works well with files containing lots of repetitive data, such as text and
monochrome image (TIFF and GIF) files. Flate compression is a standard feature of PDF files, that
Acrobat works well with.
JBIG2
JBIG is a standard algorithm for lossless compression of bi-level images (two color images), specializing in
the preservation of thin lines. JBIG2 compression is usually used for text and halftone documents, and is
claimed to be able to compress scanned documents up to 10 times smaller than with TIFF G4. A further
claim is that it allows scanned manuals, books, check images, and other document types to be viewed and
manipulated efficiently over the Internet. This method yields a very small black and white file size with fast
viewing performance. This compression format requires Acrobat 5, with PDF version 1.4 or greater.
XPS Settings
XPS is Microsoft's new electronic paper format, an alternative to PDF. XPS is currently supported as a
saved file format in Microsoft Office 2007, with an XPS viewer built into Windows Vista. Microsoft states
that Windows vista uses the XPS format as a document format, a windows spool file format, and a page
description language for printers.
Select [Optimized for Fast Web Viewing] (also known as Interleaved XPS), or [Enable MRC Compression]
for the same reasons stated above for PDF files.
Note regarding Searchable XPS: If this option is available, by enabling the selection you will provide
Network Scanning, E-mail, and Internet Fax users with the ability to choose [Searchable] as an option for
their XPS file format. The Searchable Format provides a second layer of data with the text of the scanned
document. The second layer is converted to an optical character readable format, enabling the text of the
document to be searched on, copied, and pasted, as desired.