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Xerox Documate 3640 User Guide

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    							Xerox® DocuMate® 3640
    User’s Guide 161
    Document Settings
    •
    Main panel —this panel contains the most commonly used scan settings. When the  Basic source 
    configuration mode is selected, this is  the only panel available. Change to the  Advanced source 
    configuration mode to enable the other panels  which are also described in this section. 
    • Advanced panel —this panel contains advanced document handling options. If you select an 
    option in this panel that also appears on the Main  panel, when you return to the Main panel that 
    option will be selected.
    The  Document settings  section when the Basic document source configuration mode is selected.
    The  Document settings  section when the Advanced document source configuration mode is selected. 
    						
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    Disabled Options in this Section
    Some options in the interface may be grayed out an
    d cannot be selected. Grayed out options are either 
    not appropriate for the current scanner, the software  needed to enable the feature is not installed, 
    or 
    the feature is dependent on another setting in the  scanner's interface. Hover the mouse cursor over a 
    grayed out feature to see information  about why the feature is unavailable.
    When you are using a scanner that has multiple sources, such as an ADF with Flatbed combination 
    scanner, some options may be disabled based on th e current source displayed in the source list. For 
    example when the flatbed source is selected, the manual feed option will be disabled.  
    If an option is unavailable, check to see which source is displayed at the top of the source list when in 
    the Advanced interface view.
    Note that even when  Sources identical is selected, any options that are only available for a specific 
    source will be discarded if the scanner scans from the source that does not have those options.
    When Flatbed is displayed here, only the 
    options that can be used for the flatbed will 
    be available in the scanner interface. Click on one of the color modes under the 
    source you want to configure.  That source will 
    now be displayed at the top of the list, and 
    the options for that source will be available in 
    the scanner interface. 
    						
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    Main Panel Options
    Some of the options in this panel 
    may have advanced adjustment opti ons on a different panel in this 
    section. When the  Advanced configuration mode is selected, an icon will appear  next to those features 
    which have adjustment options on  another tab. Click on one of the icons to go to the area of the 
    interface where the adjustment options are located.
    Click on a link below to go to the appropriate page in this section for instructions on adjusting the 
    option that is displayed on the  Main tab.
    See  Advanced Panel Options  on page 167
    • Automatic cropping options
    • Skip blank originals
    • Cleanup edges
    Resolution
    The resolution determines the amount of detail yo u can see in the scanned image. Resolution is the 
    clarity of the image measured in dots-per-inch (dpi).
    Move the slider left or right to change the resolu tion for the scanned image. The higher the resolution, 
    the clearer the image. However, high resolution scans also produce larger file sizes. The available range 
    displayed in the slider area are within the mini mum and maximum range supported by your scanner. 
    The resolution slider will always displa y the correct range for the current scanner.
    Choosing resolution values
    Typically, when making copies of black and white documents, 100–150 dpi will create an image of 
    similar quality to the original. When making copi es of color documents or photographs, 150–200 dpi 
    will create an image of similar quality to the original.
    Higher resolution settings are generally used for crea ting an image that can be enlarged without losing 
    image quality, but take longer to scan.
    Some resolution settings for typically scanned items are:
    • Text document  letters, forms, or other typed black and white documents – 100 dpi to 150 dpi 
    						
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    •
    Text document  letters or forms with hand printed text – 150 dpi
    • Text document (for OCR)  forms, letters, memos, or spreadsheets – 300 dpi
    • Business cards  or other items with small print – 300 dpi
    • Color page with graphics or color photographs – 150 dpi
    • Color photographs of poor quality for image enhancement – 300 dpi
    • Color photographs for printing – 200 dpi
    • Color photographs for email – 100 to 150 dpi
    • Magazine page  with graphics, line art, or color photographs – 200 dpi
    Document Size
    Standard document sizes
    Click the drop down menu and select a pre-defi ned document size from the list. The available 
    document sizes are within the scanner's  range of minimum and maximum item size. 
    Custom document sizes
    Select the measurement units you want to use from the  Units list.
    If the  Document size list does not include the document size for your scanning batch, click in one of 
    the fields below the document size list. Input the wi dth of the document in the first field, then input 
    the height in the second field. 
    You can input a maximum of 14 inches in  the height field. Please refer to Long Document if your 
    scanner supports page lengths greater than  14 inches and you want to scan long pages.
    You can only specify values within the scanner's  minimum and maximum supported item size. Please 
    refer to the maintenance section of the sc anner user's guide for this information. 
    						
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    Long Document
    Select 
    Long document  to enable support of paper sizes up to the scanner maximum. After you select 
    this option make sure you input the page length fo r your document in the custom input field, located 
    below the  Document size selection list. 
    Note that some of the options in the scanner interf ace cannot be used when the page length will be 
    greater than 14 inches. When you select this option,  incompatible options will either be automatically 
    disabled or the setting will simply be disc arded while scanning. For instance, the option  Detect double 
    feeds  will usually be disabled when  Long document is selected, even if the scanner supports DFD, as 
    the added page length will cause a false double feed.
    Manual Feed
    Select this option to enable a delay from when th e last page is scanned and when the scanner stops 
    the scan job. This allows you to scan one page at a  time without having to click Scan for each page you 
    put in the scanner. 
    To scan with manual feed mode:
    1. Select  Manual feed  in the scanner’s interface.
    2. In the  Timeout field, input the amount of time you want the scanner to wait from when the last 
    page is scanned and when the scanner stops scanning.
    3. Place a document in the scanner.
    4. Click  Scan.
    5. The scanning progress dialogue on-screen will display a countdown indicating how much time you  have to place the next document in the scanner.
    6. When you are done scanning all pages in your document, you can click on  Abort to stop the timer 
    or simply let the timer run out.
    Detect Double Feeds
    Detect double feeds is the scanner's ability to de tect when two or more pages are fed through the 
    scanner at the same time. When this option is turned on, ultrasonic waves are aimed at the document 
    to detect multiple pages by the level at which the  waves pass through the pages. The accuracy of this 
    sensor depends on paper thickness and whether or  not creasing is in the original document.
    This option is available in the interface only if the current scanner supports this feature.
    Te c h n i c a l  N o t e :
    If you are getting false double feed errors, try cleani ng the inside of the scanner. Excessive dust on the 
    sensor can cause false double feed errors. Refer to  the maintenance section of the scanner's user guide 
    for instructions on cleaning the scanner. 
    						
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    Straighten Image
    Select this option to let the scanner automatically determine if a page is skewed, then straighten its 
    image. This option is only available if the scanner supports this feature.
    If you are scanning using an automatic document fe
    eder, and the page is fed through at too great of 
    an angle, the image may not straighten correctly. In  that case, re-scan the page making sure the paper 
    guides are adjusted to the width of the pages in th e input tray so that the pages are pulled straight 
    through the scanner.
    Rotate Image
    Select an option in this list to have the final image rotated when scanning is complete.
    Flip Back Side
    Select this option if you are scanning duplex pages th at are calendar style orientation. This option will 
    rotate the back side image 180 degrees from the front side.  When scanning in duplex mode without 
    this option selected, the back side image of calendar  orientation pages will appear upside down in the 
    final scan. This option does not automatically determine book page orientation versus calendar page 
    orientation.  If you have this option selected when  scanning book orientation pages, the image for the 
    back side of the page will appear upside down in the final scan.  If you are scanning a batch of 
    documents that contain both types of orientation,  we recommend that you select Automatic in the 
    Rotate image list. 
    This option is available only if the current scanner  supports duplex scanning and the Duplex option is 
    selected in the scanning interface.
    Merge Two Sides
    When scanning in duplex mode, you can enable this  option to have both sides of a scanned item 
    appear on one page in the final image file.  The options in the list allow you to select where you want 
    the front side image to appear in relation to the back side image in the final file.  
    						
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    The following image shows a cheque scanned in du
    plex mode without Merge two sides enabled, and 
    the same cheque scanned with Merge two sides enable d.  When Merge two sides is not enabled, side 1 
    and side 2 of the cheque are saved in two separa te files (IMG_0001 and IMG_0002 respectively).  
    With Merge two sides enabled, both sides of the ch eque are in a single file (IMG_0003).  If you are 
    scanning a stack of items using a multipage file format, such as a PDF file, then each page in the final 
    file will have both the front and back images of the scanned items.
    Height threshold
    Input the maximum height of images to be merged.  The sides will not be merged if the height of 
    either the front or rear image exceeds this value.  For example, if you are scanning a batch of mixed 
    documents such as cheques and statements, you may  want both sides of the cheques merged into one 
    image but not the statements.  The Height thresh old needs to be lower than the length of the 
    documents you do not want merged into a single file.
    Select one of the options in the Merge two sides list to  enable this field. Note that you will also need to 
    enable Long document  if you want to have the maximum height threshold be longer than 14.
    Advanced Panel Options
    The options in this panel may also appear in the  Main panel, but with additional settings for you to 
    fine-tune the feature you've selected. Select the  Advanced source configuration mode to show this 
    panel. 
    						
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    Skip Blank Originals
    Select this option to have the scanner detect if 
    a blank page has been fed through the scanner, and 
    remove it from the final file. Typically you might us e this option when scanning a stack of two-sided 
    pages which have a number of blank sides.
    • Blank threshold —you can use the Threshold slider to fine  tune the sensitivity of the blank image 
    detection. The results will depend on the scan se ttings and the types of documents being scanned.  
    In general leave the threshold level at the default setting if you are scanning good-quality 
    documents printed on standard 20lb printer paper.   Try lowering the sensitivity level if your 
    documents contain light colored text or drawings so those pages are not detected as blank.  Raise 
    the sensitivity level if you are scanning double -sided light-weight paper where images from the 
    opposite side of the page may appear in the image of the blank side. 
    Clean Up Edges
    Select this option to remove any thin lines from around  the edges of the final scan.  This option will fill 
    the margins of the image with the detected edge  color.  When you select this option, the Width input 
    field will automatically enable for you to input the size of the area you want to have filled with the 
    background color.  You can specify a fill size between approximately 0.04 to 0.39 inches (1 mm to 10 
    mm).
    Automatic Image Cropping
    Depending on the scanner model and installed soft ware, there may be more than one auto cropping 
    option in the interface.
    • Crop to original —select this option to let the scanner  automatically determine the size of the 
    item being scanned. This option is only available if the scanner supports this feature. This option 
    may occasionally be grayed out as not all  scanning applications support this feature.
    Always properly adjust the paper guides to the wi dth of the paper in the input tray so that the 
    pages feed into the scanner as straight as  possible. Skewed pages may not crop properly. 
    • Crop to length —this option tells the scanner to crop the final image to the bottom of the page 
    being scanned. This option is only available if th e scanner supports this feature. This option may 
    occasionally be grayed out as not all scanning applications support this feature.
    Always properly adjust the paper guides to the wi dth of the paper in the input tray so that the 
    pages feed into the scanner as straight as  possible. Skewed pages may not crop properly. 
    Compression Options
    There are two types of image compression function s used during scanning.  The input compression 
    option is compressing the image wh en transferring it from the scanner to the TWAIN driver on the 
    computer.  The output compression  option is the TWAIN driver compressing the image before it sends 
    the image to the scanning applicat ion.  In the scanning interface the input compression option is 
    Compress transfers and the output option is  Compression. 
    						
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    Compress transfers
    Select this option to have the scanner compress th
    e image in Gray and Color scans.  This reduces the 
    file size and allows for faster image transfer from  the scanner to the computer.  Once the compressed 
    image is on the computer, scanner’ s driver will then uncompress the image, and perform any image 
    processing functions that have been selected in th e scanning interface.  The uncompressed image is 
    then transferred to the scanning application.  With  Compress transfers, a scanning application such as 
    Nuance PDF Converter, will receive the uncompressed image and save the image in whatever file 
    format it uses. You can use the Quality slider to  adjust the level of compression you want to use.
    When the  Quality option is set to High quality, there is very little visual difference between a 
    compressed scan and an uncompressed scan.  When the quality option is set to High compression, 
    there may be a greater visual difference between compressed and uncompressed scans.
    Quality
    You can fine tune the compression level by adjust ing the quality slider between high compression and 
    high quality.  When the quality level is set to hi gh compression, the scanner will scan and transfer 
    images faster than high quality, but the imag e quality of the output scan will be lower.
    Subsampling
    The subsampling options allow you to select th e encoding ratio between color information and 
    luminosity. Subsampling works by lowering the resolution of the RGB colors found in an image without 
    affecting luminescence of the image. This compresses  the image to create smaller file sizes but it can 
    sometimes result in loss of image quality.  De pending on the type of image being scanned, 
    subsampling encoding may not have a noticeable affect in the final image file. You should try test 
    scans using the different levels of subsampling to make sure you are happy with the image quality.
    • 4:4:4 —no subsampling and the ratio between co lor and luminosity remains unchanged.
    • 4:2:2 —mid-level ratio between color and luminosity.
    • 4:1:1 —highest ratio difference between color and lumi nosity, which results in saving the smallest 
    file size.
    Compression
    This option is specific compression  for file and memory transfers to an  application.  It is only available 
    if the application you are using can accept a compressed image file.  For instance, if your scanning 
    application is set to receive JPEG compressed images, then the  Compression field will display  JPEG.  
    Otherwise, the status for Compression will always be disabled and display  Uncompressed because the 
    scanning application you are using is requesting an uncompressed image.
    The  Compress transfers  option described herein compresses th e image for faster transfer from the 
    scanner to the computer.  The driver uncompresse s the image and transfers the uncompressed image 
    to the scanning application.  The  Compression option will often be disabled as most applications do 
    not support receiving a compressed im age file from the scanner driver. 
    						
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    When this option is available, it is an advanced us
    er and application option and should not be adjusted 
    if you are not familiar with the technology. However, if you are certain that you are using an 
    application that can receive a compressed image,  and you want to be able to change the image 
    compression type, you will need to enable user adjustable compression in the scanning interface. 
    Please refer to the  Driver Settings section for instructions.
    Please note that if you adjust this setting, and the application cannot actually accept the option you 
    change, the scanning interface an d the application may crash. It is highly recommended that you 
    leave the default options and let the  application set any image compression.
    From the Windows Control Panel
    1. Click on the  Driver settings tab.
    2. Select  Enable user compression  and Remember compression .
    Note that if these two options are grayed out an d you cannot select them, then these options are 
    not available for your scanner.
    3. Click on  OK.
    4. Open the scanner interface.
    5. Change to the  Advanced source configuration mode.
    6. In the Document settings section click on the  Advanced tab.
    7. If your scanner and application supports compressed file transfers, the Compression option will  now be available. 
    						
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