Scanner User's Guide

A-61560 June 2006 49
General tab The General tab allows you to define several image processing values
that can be applied to your scanner.
Scan as — select one of the following options:
• Color (24-bit): if you want your electronic image to be in color.
• Grayscale (8-bit): if you want your electronic image to have a range
of varying shades of gray from black to white.
• Black and white (1-bit): if you want your electronic image to
represent all elements of your document in black and white.
NOTE: The Scan As option is not available when Multiple Images
per Side or One based on document content is being
used. These options already imply a combination of two of
the Scan As options.
Document type — select one of the following based on the documents
you are scanning:
• Text with Graphics: the documents contain a mix of text, business
graphics (bar graphs, pie charts, etc.) and line art.
• Text: the documents contain mostly text.
• Photographs: the documents contain mostly photos.
Media type — select one of the following options based on the texture/
weight of the paper you are scanning. Available options are: Plain
Paper, Thin Paper, Glossy Paper, Card Stock, Magazine.
Resolution or dots per inch (dpi) — indicates the scanning resolution,
which largely determines the quality of the scanned image. The greater
the resolution, the better the reproduction. However, scanning at a
higher resolution also increases scanning time and file size. The
industry standard is 200 dpi (about 8 pixels/mm). Available resolutions
are: 75, 100, 150, 200, 240, 300, 400, 600 and 1200 dpi.
Compression — squeezes the file to decrease the total size. Black
and white images are normally compressed using a CCITT standard
called Group IV, often used in conjunction with TIFF files. Color and
grayscale images are often compressed using JPEG techniques.
Quality — if you choose JPEG compression, select one of the quality
options:
• Draft: smallest file size with draft image quality
• Good: larger file size with good image quality
• Better: larger file size with better image quality
• Best: larger file size with the best image quality
• Superior: largest file size with superior image quality