Xerox 5101 User Manual

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Contents

Xerox 5101 User Manual Manual pdf 48 page image

3 Document Quality42 Wide Format Copy System User GuideDYNAMIC BACKGROUND REMOVAL only monitors the document in the process direction, fromthe lead edge to the trail edge. It cannot make adjustment from the left side to the right side ofthe document. For example, if the input document is dark, DYNAMIC BACKGROUND REMOVALwill automatically make the appropriate compensation to optimize the reproduction of the darkdetails. If the input document has a faded background, the feature will enable a faithfulreproduction of the original. However, the faded background must be inserted with the fadingrunning 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, youmay not wish to faithfully reproduce paste-up lines, or other artifacts on the original. For thisreason, 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 thedocument captured during the scanning process to set image quality settings. The systemautomatically adjusts for the darkness of the background and the image content throughout thelength of the document. When not enabled, it only uses the information in a 0.70 (17.8 mm) areaover the width of the document to establish the image quality settings. Therefore, best results canbe obtained if the document is fed in with an edge that has a representative sampling of both thebackground and the foreground image.The Dynamic Background Removal feature provides an accurate copy for most documentsincluding blueline, blueprints, color line art/text, and mixed documents containing combinations ofhalftone and art, or photograph and art. For documents with inverted images, the INVERTfunction should be enabled. Refer to "Inverting an image" in the "Special features keys" sectionfor instructions on the INVERT function.Automatic Edge Detection and Document CenteringThe AUTOWIDTH /AUTOCENTER features enable the system to automatically detect the widthand center of the document. In cases such as transparencies or translucent documents whereautomatic detection is not possible, a message will prompt you to enter the width manually. Youthen 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 SystemControl" in the "Main Menu" section of this manual for more information.PRODUCTIVITY MODE: This feature became available with version 10.0 FreeFlow Accxessoftware, and requires a new Wide Format Scan System with the Productivity Document FeedTray with the discrete width sensors. This feature measures the document width without doing apre-scan, requiring the operator to manually align the document within the media size guidelineson the Feed-in Tray. The width sensors eliminate the need for a prescan, thereby increasing theoverall 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 cannot monitorevery 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.Determining Document QualitySome documents require additional adjustments to obtain the best copy quality. Documents ofgood quality are easy to scan and usually give good copies on the first attempt. Documents ofbad quality may require more than one attempt, using different settings, to obtain the best copyquality.