4 Image Quality54 Wide Format Copy System User GuideSCAN OPTIONS (COLOR)9COMPRESSION:FORMAT:NORMALPDF/APREVIEWScan Options (Color) Screen – PDF/A file formatCOMPRESSION (PDF/A file format selected) - Use this selection to determine the compressionmethod to apply to the saved PDF/A document. Select one of the following:• BEST IQ - Saves a document at a lower compression ratio but has higher imagequality.• NORMAL - Saves a document at an average compression ratio and has averageimage quality.• BEST COMPRESSION - Saves a document at a higher compression ratio but has alower image qualityBackground SuppressionThe Background Suppression enables you to make adjustments for documents that containpoor contrast between the foreground image and the background. Background Suppressionmonitors the pre-scan image, to ensure the best image quality possible. In the PRODUCTIVITYmode, there is no prescan, therefore Background Suppression is done while the document isbeing scanned.NOTE: The scan system uses the first few inches of a document to determine the backgroundsuppression. If the first few inches of the document being scanned are not representativeof the entire document, either too much or too little of the background will be removed. Ifthis occurs, try physically turning the document 90 degrees and scan it again. Continuewith this until an edge is found that produces a good scan.Four choices are provided:NOTE: Off is the only choice for Photo and Color Scanning. Scanning low contrast documents withbackground suppression OFF will produce washed out images. When scanning thesedocuments, background suppression should be set to AUTO or DARK.Off This setting disables Background Suppression. It produces a document that reproduces allthe characteristics of the original document with minimum alteration. Choose this selectionwhen:• The lead edge of the document is very different from the rest of the document(e.g., the lead edge contains a black border).• Maps with grayscale or color content may copy best in this mode.• To retain more light color information such as light gray or yellow.(Light) This setting works best for documents on translucent or transparent media, such asvellum (tracing paper) or film, or with medium levels of colored background on opaque media
