Xerox DocuMate 4790 User Manual page 144

Page type—your scanner supports both Single-Sided (simplex) and Double-Sided (duplex) scanning. If
you only want one side of the page scanned, select Single-Sided. If your document contains
information on both sides of the page, select Double-Sided to have both sides of the page scanned.
Page size—click the down arrow and select a pre-defined page size from the list. The available page
sizes are within the scanner's range of minimum and maximum item size. The list includes options that
may be specific to your locale, such as U.S. Letter, A4, B5, etc...
If the list does not include the page size for your scanning batch, click on Custom, then input the Width
and Height of the document. Click on Inches to change the setting to millimeters (mm). You can only
specify values within the scanner's range of minimum and maximum item size. When Long Document
is not selected, 17 inches (431.8 mm) is the maximum custom length that can be specified.
Long document—when inputting a custom page size value, click on Long document to enable long
paper support. When this option is selected you can scan documents with a page length up to the
scanner maximum. Change the value in the Height field to match the length of the document you are
scanning. If the value in the Height field is less than the actual document length, the scanned image
will be split up across multiple pages. For example, if you are scanning a document 50 inches long, and
the Height field is set to 10 inches, the final scan will be split across 5 images.
Please note that you can only scan one page at a time using the Long document option. Also, the
Detect control sheet and Detect patch codes features are disabled when Long document is enabled.
Page orientation—the Portrait or Landscape option is for you to select what direction you placed the
pages in the scanner. Choose portrait if the papers are in the input tray with the tops in the scanner.
Choose landscape if the papers are in the input tray with the sides in the scanner. This option is only
available for standard paper sizes in the Page size list.
Detect control sheet—select this option to use control sheets to change the scan settings
automatically while scanning. For example, if you are scanning a 100 page document in black and
white, but there are certain pages you want scanned in color, you can place a "color" control sheet in
the document stack at the section where you want to switch to color scanning. You can then put a
binary (black & white) control sheet further down in the stack to have the scanner automatically switch
back to black & white scanning.
There are various types of control sheets available on the scanner's installation disc for you to print and
use, such as Simplex and Duplex to switch between single-sided and double-sided scanning. Please
note that when using a control sheet that has multiple options in the TWAIN interface, TWAIN will
always use a pre-defined setting. Currently these settings are defined for the following control sheets:
• When using the Dither control sheet, TWAIN will choose the dither method: Bayer dither (64
steps).
• When using a Halftone control sheet, TWAIN will choose the halftone method: 0 degree halftone
dot (64 steps).
Print and use the control sheets that are appropriate for the size of the pages being scanned. The
scanner recognizes control sheets as follows:
• The scanner will only detect control sheets that are face-up in the document stack when scanning
in Single-sided mode.
• When scanning in Double-sided mode, the scanner will look for the control sheet data on both
sides of the paper.
144 Xerox DocuMate 4790
User's Guide