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Canon scanner CanoScan FB 630U User Manual

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    Glossary
    Contents
    Index
    81
    Glossary
    Scan Mode
    The desired bit depth for the scanned image. Choices are Color,
    High Definition Color, Black and White, Grayscale, and Text
    Enhanced.
    Scanner
    An input device that scans an original with a light source, and
    converts the image tones to digital information for computer
    applications. The digital information can be saved as a file, or
    converted to a text file using OCR software.
    Scan Resolution
    A list of preset levels of detail, expressed in dots per inch (dpi), for
    the scanned image, available from the Scan Resolution list on the
    Main sheet. See also dpi, Pixel, Resolution.
    Sliders
    On some of the controls in ScanGear CS, for example, the Contrast/
    Brightness tool, you have the choice of either typing values
    directly into text boxes or using sliders. Click the slider and move it
    to the left or to the right to change the values.
    Statement
    A U.S. standard paper size measuring width x height: 5.5 x 8.5 in.
    (139.7 x 215.9 mm)
    Status Bar
    The information line at the lower border of the ScanGear CS main
    window which provides helpful information about the current
    image and settings. 
    						
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    Glossary
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    Index
    82
    Glossary
    Test Scanner Button
    The Test Scanner Button on the Scanner sheet starts diagnostic
    tests and reports if there are any problems with the scanner.
    Text Enhanced
    A feature used by ScanGear CS to increase the accuracy of text
    scans. When Text Enhanced is the scan mode, images are scanned
    as Grayscale (8 bits per pixel) and converted to Black and White (1
    bit per pixel) using Canon ImageTrust processing software.
    Threshold
    In a Black and White image, the point at which a gray pixel is
    determined to become either black or white. The Threshold slide
    bar is on the Scanner sheet. Adjust the Threshold value when you
    are scanning a grayscale or halftone original with Black and White
    selected as the Scan Mode.
    Tone
    The shading and combination of colors in the image.
    Tone Curve
    The curve displayed with the Tone sheet tools to indicate the
    Black-, Mid-, and White-point tones in a color or grayscale preview
    image. You cannot edit the curve except with the Special Tone
    Curves tool.
    Tone sheet
    The Tone sheet contains tools that let you adjust and correct the
    image tone. The Tone sheet tools include Auto Tone, Contrast/
    Brightness, Gamma, Histogram, and Special Tone Curves. 
    						
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    Glossary
    Contents
    Index
    83
    Glossary
    Toolbar
    A set of ScanGear CS tool buttons, located above the Preview
    Area, for image selection, orientation, and other basic
    adjustments.
    TWAIN
    TWAIN refers to an industry standard for transferring information
    from devices (such as a scanner or digital camera) to your
    computer. One interpretation of the acronym is ÒTechnology
    Without An Interested Name.Ó
    Underexposed
    An dark photographic image that was exposed to too little light
    when it was photographed.
    Units of measurement
    In the Units text box, the expression of width and height, in
    inches, centimeters, or pixels, of the scanned image.
    Universal Serial Bus (USB)
    A group of hardware devices that makes it easier to add serial
    devices to a computer system.  Support of USB devices is built into
    the Windows Driver Model (WDM) specifications, making it easier
    for future versions of Windows to support the current drivers.
    White-point
    The lightest portion of the image scanned as Color or Grayscale.
    When you click on the image with the White-point eyedropper, all
    tones lighter than the selected sample tone are adjusted to white. 
    						
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    Glossary
    Contents
    Index
    84
    Glossary
    Width
    The Width text box contains the width of the current selection or,
    if there is no selection, the maximum horizontal output size, based
    on the currently selected paper size.
    Width-Height ratio
    Proportion of the image. To keep the width-height ratio intact,
    click the Keep Proportions button before changing the width or
    height values.
    X and Y Axes
    The X and Y axes on the Tone sheet curve chart represent,
    respectively, the input image color and output image color.
    Zooming
    Enlarging an image or a selected part of the image in the Preview
    Area or in a graphics application. 
    						
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    Index 
    						
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    Glossary
    Contents
    Index
    86
    Index
    Index
    A
    Auto Crop Button,  39
    Auto Tone button,  40, 47
    Auto Tone Sheet,  48
    B
    Black and White,  42
    C
    Calibration,  59
    Clear button,  30
    Color,  42
    Contrast/Brightness button,  47
    Contrast/Brightness sheet,  49
    Crop button,  38
    Custom Resolution dialog box,
    45
    D
    Descreen,  59
    E
    enhancing image
    adjusting Brightness,  35
    adjusting color tone
    automatically,  35
    adjusting Contrast,  35
    adjusting intensity of tones
    (Histogram),  35
    adjusting mid-tones
    (Gamma),  35
    adjusting output color
    (Special Tone Curve),  36
    adjusting threshold,  36
    descreen (moire reduction),
    36
    G
    Gamma button,  47
    Gamma sheet,  50
    Grayscale,  42 
    						
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    87
    Index
    H
    help
    opening on-line help,  8
    Help button,  40
    High Definition Color,  42
    Histogram button,  47
    Histogram sheet,  52
    M
    Main sheet
    Keep Proportions button,  43
    Scale,  44
    Scan Mode,  41
    Scan Resolution,  42
    Selection,  43
    Units,  44
    Width and Height,  44
    Main window
    overview,  29
    manipulating image
    cropping,  34
    inverting an image,  34
    mirroring an image,  34
    moving an image,  34
    rotating an image,  35
    zooming,  34
    Mirror Button,  39
    Move Image button,  38
    N
    Negative/Positive button,  39
    P
    Paper Size,  33, 58
    Preferences sheet
    Automatically execute a
    preview,  24
    Automatically quit ScanGear
    after scanning,  24
    Canon ColorGear color
    matching,  23
    opening,  21
    Saved image will be
    displayed,  24
    Use High Definition Color
    instead of Color,  23
    Use Text Enhanced instead of
    Black and White,  23
    Preview Area
    function,  30
    Preview button,  29
    preview opening setting
    opening Preferences sheet,
    11
    setting up,  11 
    						
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    88
    Index
    R
    resolution,  31, 42
    setting custom resolution,  45
    Rotate Left button,  40
    Rotate Right button,  40
    rulers,  30
    Rulers button,  40
    S
    Scale,  33, 44
    Scan button,  29
    Scan Mode,  31, 41
    Scan Resolution,  42
    Scanner sheet,  58
    scanning
    preparing scanner,  10
    previewing the original,  14
    scanning an original,  14
    selecting scanning area,  18
    scanning area
    selecting,  18
    scanning buttons
    described,  29
    Select Scanner dialog box,  13
    Selection,  43
    Special Tone Curves button,  47
    Special Tone Curves sheet,  54
    editing a  curve directly,  56
    Status Bar,  31
    T
    Test Scanner,  59
    Text Enhanced,  42
    Threshold,  59
    Tone sheet
    Tone buttons,  47
    toolbar
    Auto Crop button,  39
    Auto Tone button,  40
    Crop button,  38
    Help button,  40
    Mirror button,  39
    Move Image button,  38
    Negative/Positive button,  39
    Rotate Left button,  40
    Rotate Right button,  40
    Rulers button,  40
    Zoom Tool button,  39
    troubleshooting,  64
    TWAIN source
    Select Scanner dialog box,
    13
    selecting,  13
    U
    Units,  44 
    						
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    Glossary
    Contents
    Index
    89
    Index
    W
    Width and Height,  44
    Z
    Zoom Tool button,  39 
    						
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