Xerox 6030 User Manual page 92

Directions for using the [Background Suppression]
Background Suppression is a technology that detects the background level of the
drawing created with texts and lines. When dark background is selected from the
[Document Image Type], image loss may occur when copying a normal to light density
document.
Background may not be suppressed in the following events. In this case, use manual
adjustment.
• The document background is extremely dark.
• Document is torn or contains holes.
Use manual adjustment when the following is observed.
• The lead edge of the copy becomes blurred.
• Image loss occurs, or background is not completely suppressed.
[Auto] adjustment of [Background Suppression] cannot be used when [Picture] or
[Photo] is selected for the [Document Image Type].
Use manual adjustment for the following documents.
• Complex color documents, or Photo/Poster documents.
• Document has light colored horizontal lines or light color strings of text.
• Document has a low-density frame.
• High line density documents such as maps, that potentially have more lines than
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Chapter 4 Copy Functions
Line/text length: Half of the document width.
Line/text width: 1mm or more (excluding the cases where the line/text density is
dark)
There are cases where a low-density edge is detected as the background.
As a consequence, edge and ambient images are erased, or background is not
suppressed.
the background.
High density area may be detected as the background to be suppressed.
This function can also be performed from the Copier Control Panel. The Copier's
Menu Screen allows the user to better fine tune the option output.