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34 • Document quality XEROX WIDE FORMAT COPY SYSTEM
REMOVAL will automatically make the appropriate compensation to
optimize the reproduction of the dark details. If the input document has a
faded background, the feature will enable a faithful reproduction of the
original. However, the faded background must be inserted with the fading
running in the process direction with the darker side being inserted first.
In some cases, you may wish to optimize the settings for individual
documents. For example, you may not wish to faithfully reproduce
paste-up lines, or other artifacts on the original. For this reason,
additional controls are available for selection of document type,
document image quality, desired output darkness, and background
suppression.
The DYNAMIC BACKGROUND REMOVAL feature, when enabled, uses
information about the document captured during the scanning process to
set image quality settings. The system automatically adjusts for the
darkness of the background and the image content throughout the length
of the document. When not enabled, it only uses the information in a
0.70 (17.8 mm) area over the width of the document to establish the
image quality settings. Therefore, best results can be obtained if the
document is fed in with an edge that has a representative sampling of
both the background and the foreground image.
The Dynamic Background Removal feature provides an accurate copy
for most documents including blueline, blueprints, color line art/text, and
mixed documents containing combinations of halftone and art, or
photograph and art. For documents with inverted images, the INVERT
function should be enabled. Refer to "Inverting an image" in the "Special
features keys" section for instructions on the INVERT function.
The AUTOWIDTH /AUTOCENTER features enable the system to
automatically detect the width and center of the document. In cases
such as transparencies or translucent documents where automatic
detection is not possible, a message will prompt you to enter the width
manually. You then must center the document before inserting it into the
Scan System.
You can enable/disable the AUTOWIDTH/CENTER feature at any time.
Refer to "Scan System Control" in the "Main Menu" section of this
manual for more information.
PRODUCTIVITY MODE: This feature became available with version
10.0 FreeFlow Accxes software, and requires a new WIDE FORMAT
SCAN SYSTEM with the Productivity Document Feed Tray with the
discrete width sensors. This feature measures the document width
without doing a pre-scan, requiring the operator to manually align the
document within the media size guidelines on the Feed-in Tray. The
width sensors eliminate the need for a prescan, thereby increasing the
overall throughput of the system, resulting in higher productivity
When the PRODUCTIVITY MODE is used, the operator must select the
media series, ANSI, ARCH, ISO A, CUSTOM, etc., since the number of
sensors that can be provided can not monitor every media series. The
PRODUCTIVITY mode can be enabled/disabled at anytime. Refer to
"Scan System Control" in the "Main Menu" section of this manual for
more information.
Automatic edge
detection and
document centering