Canon N650U, N656U Moiré, Optical Resolution, Pixel, Plug-in Software, Preview Area, Preview Scan

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Moiré

The patterns or lines created by overlapping dots in an image. This phenomenon is found when photographs or pictures are scanned from books and magazines at low resolutions. The Descreen function helps to eliminate moiré patterns.

Optical Resolution

An expression of the volume of data per inch (dpi) that can be sampled by a scanner.

Pixel

An abbreviation of picture element, the smallest element on a monitor screen.

Plug-in Software

A program that extends the functionality of an application program. Plug-in Module CS-U is a driver plug-in that adds scanning capabilities to programs such as CanoScan Toolbox CS and PhotoStudio 2000.

Preview Area

Area at the right of the Plug-in Module CS-U window used to display preview images. Clicking the [Preview] button causes the scanner to scan its platen and reproduce the image in the preview area. Please note, however, that preview images do not get downloaded to the application program in use.

Preview Scan

A low-resolution, trial scan of an object. The image shown in the preview area can be used to adjust the scan area, brightness and color balance before initiating the final scan.

Resolution

The density of the dots used to express an image. Image fineness or coarseness is expressed as the number of dots per inch (dpi). See also DPI.

RGB

A color set of red, green and blue: the three primary colors of light. The scanner picks up light reflected off objects with its red, green and blue sensors. Color printers output color using the complements to the RGB color set, which are cyan, magenta, yellow and black (CMYK). Cyan, magenta and yellow are called the three secondary colors.

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Contents Users Guide How to Make Best Use of the Manuals When you open the boxAbout the Conventions Used in this Guide How to Use this GuideWhere to Look Table of Contents Adjusting Scanned Images Installing Plug-in Module CS-U Operating EnvironmentControl Panel Features Image Size ppScanning Procedures E PGamma Curve Adjusts Image Brightness Plug-in Module CS-U Special FeaturesSee the Results of Adjustments Immediately Dynamic Preview ColorSync Ver 2.0 + Compatible for Auto Tone CorrectionStart Plug-in Module CS-U Install Plug-in Module CS-UQuick Start Instructions Position materials for scanning and preview themClick on the Browser button Selection frame will appear Verify Image Quality with the Browser Function beforeSpecify the Area of the Image to be Scanned Select the area to be scanned by clicking and draggingScan the Image p Save the Scanned Image pE P Displaying the Plug-in Module CS-U Control Panel RGB ValuesOperating Procedures Place the original on the scanners document glass ProceduresPositioning Originals Previewing Click on the Preview buttonSelecting the Output Device Setting the Resolution and Magnification Output Device Resolution= 720 dpi, Magnification= 100%To Set the Magnification Factor Set the desired magnification factor on the control panelGrayscale Setting the Scan ModeBlack and White Color DocumentsClick the arrow beside Scan Mode Select a scan mode from the pop-up menuVerifying the Image before Scanning To Verify the ImageRotating the Image Use these buttons to rotate the imageAspect Ratio Setting PreferencesOutput Device Unit Preview WindowClose Plug-in After Scan Reset Default SettingsCalibration Operating Procedures Scanning Setting the Scan Area Position the pointer in the preview windowSelect the area you want to enlarge with the zoom function Procedures to ZoomZooming Click on the Zoom In button Specify the Scan Area ScanningTo Initiate the Scan Click on the Scan buttonSaving Scanned Images Enter a name for the file and click the Save buttonColor Photos and Color Documents Grayscale, Color Photos and Color DocumentsBlack & White Tone Adjustment Tone Adjustment DialogHistogram Settings How to Interpret HistogramsTo Adjust a Histogram How to Adjust HistogramsClick on the OK button Shadow MarkTone Curve Settings Manipulating the GraphTo Edit the Tone Curve Click the OK buttonRelationship Between the Tone Curve Image Brightness Value =Brightness Brightness and Contrast SettingsContrast To Adjust the Brightness and Contrast Adjusting the Color Balance Operating ProcedureGamma value Gamma Value SettingsMatching the Gamma Value to the Display Characteristics To Change the Gamma Value Settings Adjusting the Threshold Value To Set the Threshold ValueStandard Auto Tone CorrectionTo Set the Auto Tone Correction ColorSyncUnsharp Mask Open the Image menu and select Unsharp MaskDescreen Open the Image menu and select DescreenClick the Save button Saving/Recalling SettingsTo Save Settings in a Settings File To Recall a Settings File Scanning Techniques Matching Scan Resolution to PurposeOptical and Enhanced Resolutions Appendices Troubleshooting Problem Scan button cannot be selected Cause Error MessagesError Message ResponseBits/Bit Numbers GlossaryAuto Tone Correction Black Eyedropper ToolColor Channel DotMagnification HistogramImage File Moiré Optical ResolutionResolution PixelThreshold Value Scan ModeShadows Tone CurveIndex Output device 7, 11, 18, 25Page Canon Customer Support Help Desk Canon Computer SYSTEMS, INCOE-040AA 052000 CDS Canon Inc