Canon CanoScan D646U, User Manual

Page 1: ...ScanGear CS U 6 0 for CanoScan D646U Color Scanner User s Guide ...

Page 2: ...guage or format Microsoft and Windows are registered trademarks or trademarks of the Microsoft Corporation in the United States and other countries Canon and CanoScan are registered trademarks of Canon Inc ColorGear and ImageTrust are registered trademarks of Canon Inc All other names are trademarks of their respective companies In this manual screen shots are taken with Windows Millennium Edition...

Page 3: ... Mode 20 What are the Simple Mode and Advanced Mode 21 Switching Between the Simple and Advanced Modes 22 Simple Mode Main Window 23 Advanced Mode Main Window 24 Chapter 4 What is on the screen 26 Main Window 27 Toolbar 28 Scanning Buttons 31 Simple Mode Main Window 32 Advanced Mode Main Window 37 The Main Sheet 37 The Tone Sheet 41 Contrast Brightness Sheet 44 Gamma Sheet 45 Histogram Sheet 47 Sp...

Page 4: ...Mode 59 Scanning in the Advanced Mode 64 Chapter 6 Settings in the Windows Control Panel 68 Opening Scanners and Cameras Properties 69 General Settings 71 Preferences Settings 72 Color Management Settings 74 Chapter 7 Troubleshooting 75 Pre Scan Checklist 76 How to Avoid Problems 77 Troubleshooting Checklist 79 Glossary 85 Index 99 Customer Support Help Desk 104 Table of contents ...

Page 5: ...5 Top Page Glossary Contents Index chapter 1 Before You Begin Welcome to ScanGear CS U System Requirements Getting Help in ScanGear CS U ...

Page 6: ...and adjust an image before the image is scanned and acquired by the parent software application Here is a quick summary of the important features of ScanGear CS U Two operation modes Simple mode which allows you to select all optimum settings with one selection and Advanced mode which allows you to create professional color and other enhancements for artistic effects Flexible fully automatic image...

Page 7: ...r some software applications may not open the ScanGear CS U main window When this occurs you cannot use the settings described in this user s guide because the host software application will provide the settings so you can change the image after it is acquired When a software application uses ScanGear CS U without opening the ScanGear CS U main window this is called the windowless mode ...

Page 8: ...rmined by your system 32 MB 64 MB or more recommended 10 MB of free disk space for ScanGear installation Free disk space at least 50 MB The amount of space required depends on the scanning area and the Color Mode or Resolution settings color images scanned at higher resolution require more storage space Note Before you scan an image check the file size in the status bar You should have at least tw...

Page 9: ...9 chapter 1 BeforeYouBegin Top Page Glossary Contents Index Software Microsoft Windows Me Microsoft Windows 98 or Microsoft Windows 2000 Professional TWAIN compliant parent software application ...

Page 10: ...ting Help in ScanGear CS U For information about using ScanGear CS U open the on line Help by clicking the Help button on the toolbar or in the dialog boxes Click the Contents or Index tab to see if the topic you are looking for is covered elsewhere in on line Help ...

Page 11: ...11 Top Page Glossary Contents Index chapter 2 Installing ScanGear CS U Installing ScanGear CS U Uninstalling ScanGear CS U ...

Page 12: ...n enabled USB port Some computers may require enabling the USB function with a BIOS setting For details about enabling the USB port with the BIOS setting see your computer manual Make sure the scanner is connected to a computer If a previous version of ScanGear CS is installed on your computer uninstall it before you install ScanGear CS U 6 0 Note With Windows 2000 Professional ensure that you log...

Page 13: ...displays confirm that Automatic search for a better driver Recommended is selected If you selected Specify the location of the driver in Step 2 and then clicked the Next button click the Back button and redo the procedures starting from Step 2 3 Place the CanoScan Setup CD ROM in the drive 4 Wait for approximately 10 seconds then click the Next button The driver will begin to install If the Window...

Page 14: ...sident on the drive Follow the instructions in the Uninstall the Software option on the CanoScan Setup Utility to uninstall ScanGear CS U If you use the multi language CanoScan Setup Utility CD ROM After you have attached the scanner to the computer have the CanoScan Setup CD ROM at hand and follow the procedures below to install the driver software ScanGear CS U 1 Turn the computer on 2 When the ...

Page 15: ... checked Then click the Browse button 5 From the CANOSCAN CD ROM select the SCANGEAR folder followed by the appropriate language folder and click the OK button 6 Confirm that the correct folder and path appear beside the Specify a Location option and click the Next button 7 When the name of the scanner appears click the Next button The driver will begin to install 8 When the Windows has finished i...

Page 16: ...perform this procedure you need CanoScan Setup Utility CD ROM 1 Connect the scanner and computer with the USB cable Then turn on the computer A brief message will tell you that an unknown device has been detected then the Add New Hardware Wizard dialog box opens 2 Click the Next button Windows 98 Windows 2000 Professional ...

Page 17: ...he CD ROM drive 5 If you use the English version uni language CanoScan Setup Utility CD ROM select the CD ROM drive then click the Next button If you use the multi language CanoScan Setup Utility CD ROM select the Specify a location and click the Browse button In the Browse for Folders dialog navigate in the CD ROM drive to find the Scangear folder and select the English folder then click the OK b...

Page 18: ... and click the Next button to start copying the files 7 When you are prompted to insert the Windows 98 CD ROM after clicking the OK button click the Browse button Specify the CanoScan Setup Utility CD ROM drive as the file source then click the OK button 8 Click the Finish button to complete the installation procedure ...

Page 19: ...Place the CanoScan Setup Utility CD ROM in the drive 2 Click the Uninstall the Software button in the CD ROM s menu window 3 Click the Uninstall ScanGear CS U button in the Uninstall menu window 4 with Windows Me 98 Uninstallation procedure continues with Windows 2000 Scanners and Cameras property dialog is displayed Select D646U and click Remove Then uninstallation procedure continues Note ...

Page 20: ...20 Top Page Glossary Contents Index chapter 3 Simple Mode and Advanced Mode What are the Simple Mode and Advanced Mode Simple Mode Main Window Advanced Mode Main Window ...

Page 21: ...e setting which sets up the scanning job for you automatically You can accept the settings and start the scanning job or you can make small adjustments to the settings before you begin For routine scanning jobs you can create your own Image Types and save them under a name that will listed among the pre defined selections Advanced Mode The Advanced Mode presents more options which allow you to set...

Page 22: ... by clicking a button In the Simple Mode main window click the Advanced Mode button to open the Advanced Mode main window In the Advanced Mode main window click the Simple Mode button to open the Simple Mode main window Note If you change the settings in either the Simple Mode or Advanced Mode the changes will be reflected in the settings of the other mode Advanced Mode Simple Mode ...

Page 23: ...ge Glossary Contents Index Simple Mode Main Window The ScanGear CS U main window in the Simple Mode has only one sheet named Simple Mode followed by the name of your scanner Use the Simple Mode sheet settings to select the settings for a scanning job ...

Page 24: ...ts to perform the settings for scanning In the Advanced Mode click the Main tab Tone tab or Halftone tab or the Scanner tab to open the Main sheet Tone sheet or Halftone sheet or Scanner sheet Use the settings on each sheet to perform important settings for scanning Note In the Advanced Mode the name of your scanner D646U is displayed on the tab of the Scanner sheet ...

Page 25: ...hapter 3 Simple Mode and Advanced Mode Top Page Glossary Contents Index If you select Black and White or Text Enhanced OCR for the Color Mode on the Main sheet the Tone tab is replaced with the Halftone tab ...

Page 26: ...26 Top Page Glossary Contents Index 4 What is on the screen Main Window Toolbar Scanning Buttons Simple Mode Main Window Advanced Mode Main Window chapter ...

Page 27: ...What is on the Screen Top Page Glossary Contents Index Preview Button Scan Button Clear Button Preview Area Tool Bar Title Bar Window Resize Corner Close Box Setting Tab Mode Switching Button Status Area Main Window ...

Page 28: ...mage because you are pre scanning or scanning only the necessary section of the image not the whole area To un crop the image simply click outside the cropped area Move Image Button Use the Move Image button to scroll the image up down or left right when the previewed image has been enlarged with the Zoom Tool button and is too large to be viewed all at once Click the Move Image button and drag th...

Page 29: ...he Zoom Tool button then click the right mouse on the magnified image Auto Crop Button After clicking the Crop button and drawing a rectangle around the part of the image that you want to scan click the Auto Crop button to size the rectangle for the best fit around the object enclosed by the rectangle Negative Positive Button Click the Negative Positive button to invert the colors and create a neg...

Page 30: ...eet and then select the units of measure from the drop down list Auto Tone Button Click the Auto Tone button to have ScanGear CS U automatically adjust the tone of a pre scanned color image within the cropped area The Auto Tone feature is on when the button on the toolbar is depressed The Auto Tone button is available only when Color has been selected for Color Mode on the Main sheet and when Colo...

Page 31: ...tton to scan the image on the scanner with any special effects or adjustments that have been applied and send the scanned image to the software application from which you launched the ScanGear CS U Note After you click the Scan button the Scanning dialog box is displayed Click the Cancel button in this dialog box to cancel the scan operation Clear Button Click the Clear button to clear the image i...

Page 32: ...ly for optimum scanning results Here is a summary of the available Image Type settings for the image Color Mode and Resolution Color Screen Color 75 dpi Use to scan the original as it appears on the monitor Color Photo Color 150 dpi Use to scan color photographs Color Photo Fine Color 300 dpi Use to scan color photographs for best quality in the scanned image BJ Printer Color 360 dpi Use to scan a...

Page 33: ...er Printer Black and White 600 dpi Use to scan a black and white original that you intend to print on a black and white laser beam printer FAX Text Enhanced OCR 200 dpi Use to scan an original that you intend to send by facsimile OCR Text Enhanced OCR 300 dpi Use to scan pages of text that you intend to capture with an OCR software application Color Mode Displays the Color Mode setting for the cur...

Page 34: ...he Advanced Mode Tone tab settings Selecting Black and White or Text Enhanced OCR sets the Resolution setting to 300 dpi If you select any setting other than Black and White or Text Enhanced the Resolution setting is re set automatically to the base setting for the Image Type selection However if either Black and White or Text Enhanced OCR is selected when ScanGear CS U is started and then another...

Page 35: ...an create and save up to 12 custom settings of your own Note The Edit Image Type button is not enabled until you select Custom or a custom setting previously saved from the Image Type drop down list This button is also enabled after you select one of the pre defined Image Types and change the Color Mode or the Resolution setting Width Displays the width of the scanning area currently selected in t...

Page 36: ...Executive Letter A4 Full Platen L Portrait L Portrait LL Landscpe LL Landscape Post Card Note Magazine Click this check box if you want ScanGear CS U to conduct moiré reduction to improve the overall image quality Moiré are dot patterns that interfere with processing images for professional use and are usually caused by poor dithering resulting from scanning images from newspapers books magazines ...

Page 37: ...olor Mode determines how the original will be scanned Black and White Grayscale Color etc Click the down arrow and select a setting from the drop down list Black and White The image is scanned in black and white Grayscale The image is scanned in black and white but if the original is in color most of the colors will be shaded ...

Page 38: ... and white using Canon ImageTrust technology This setting produces sharper text which will be easier for OCR software to read The Text Enhanced OCR and Grayscale selections require more time that the Black and White setting in order execution digitization of the scanned images Selecting the Color Mode setting automatically resets the Tone tab settings Note ...

Page 39: ...of 1 dpi is also possible or values of 4800 7200 or 9600 can be entered directly The higher the resolution the better the quality of the displayed image but the slower the scanning speed Make sure you select a setting based on the capability of your output device You can enter the following values directly into the entry box to scan a very small area at high resolution The maximum size of the scan...

Page 40: ...ing does not affect the image in the Preview Area Width and Height The width and height of the current selection or if there is no selection the maximum output size measured from the upper left corner of the image in the Preview Area and based on the current paper size To change the Width and Height settings click the Crop button on the toolbar and select a section of the image in the preview area...

Page 41: ...e sheet adjustment is conducted with the Preview Area Settings can be selected even when there is no image in the Preview Area In this case the settings take effect on the next scanned image These are the Tone sheet buttons that open each tool chart and allow you to enhance images in the Preview Area Samples and detailed descriptions of each sheet are provided on the following pages Tone Sheet But...

Page 42: ...ogram button Opens the Histogram sheet and allows you to adjust tone intensity to enhance an image that is either too light or too dark Special Tone Curves buttons Opens the Special Tone Curves sheet and allows you to adjust the tones for one or all of the three primary colors RGB by selecting a special tone curve or editing a tone curve The Contrast Brightness Gamma Histogram and Special Tone cur...

Page 43: ...Color the user defined settings are saved to a file adc for color adjustment When Color Mode is set for Grayscale the user defined settings are saved to a file adg for color adjustment The system determines the path and file name for the saved file The target folder for the temporary image file cannot be changed Reset button Resets displayed settings of the channel M R G or B of the function Contr...

Page 44: ...e in the Preview Area changes to reflect the adjustment Channel If you want to select one of the primary colors RGB for adjusting the contrast or brightness click the Channel down arrow and select the color or leave the settings at Master to adjust all the colors Contrast Drag the Contrast slider to the left to decrease the contrast of the image or to the right to increase the contrast of the imag...

Page 45: ...the trees are dark enough and the white of the boat is light enough but the blue in the sky the blue of the water and the blue of the subject s clothing all look the same By increasing the Scanner Gamma value of the image the sky might become lighter and the water darker giving a better contrast to the image The Monitor Gamma value is a reciprocal number of the Scanner Gamma value Channel If you w...

Page 46: ... value into either boxes of the scanner gamma or the monitor gamma will display a respective value in the other box The allowed range of values are 0 10 to 10 00 inclusive The shape of the tone curve changes to reflect the current gamma setting for the current Channel and the image in the Preview Area changes to reflect the adjustment When the Scanner Gammma value is modified the Monitor Gamma val...

Page 47: ...ance an image when the image is either too light or too dark like an overexposed or underexposed photograph Increasing the darker tones with the histogram improves the contrast of the image Channel If you want to select one of the primary colors RGB for adjusting the histogram click the Channel down arrow and select the color or leave the setting at Master to adjust all colors ...

Page 48: ... drag one of the three triangles at the bottom of the graph to adjust the value The shape of the tone curve and histogram changes to reflect the current Histogram setting for the current Channel and the image in the Preview Area changes to reflect the adjustment A White point value must be larger than a Black point and a Mid point value must be between the Black point and White point Reset Resets ...

Page 49: ...B for adjustment or leave the setting at Master to adjust all the colors Select Special Curve Click the down arrow and select a setting from the drop down list These settings are designed to solve some of the most common problems with scanned images overexposure underexposure or poor contrast No correction Fix an image that is underexposed Fix an image that is overexposed Fix an image that is low ...

Page 50: ...iting a Special Tone Curve Directly In the Special Tone Curves graph you can edit the curve directly 1 Click on the curve and drag each curve anchor point until the desired effect is achieved 2 To remove an anchor point altogether drag the anchor point off the graph area ...

Page 51: ... a curve by clicking anywhere in the curve box If you drag a point outside of a curve box it will be deleted from the curve and a new curve will form with the remaining points The x and y axes on the curve chart represent the input image color and output image color When you add a handle to the curve and drag that handle toward the white areas the preview image tones are adjusted to reflect the ch...

Page 52: ...ode Main window If you selected Text Enhanced OCR you cannot make any changes on this sheet You can set only Threshold in this sheet Halftoning Threshold Threshold determines whether portions of an original are scanned as black or white Drag the slider left to make the image lighter or drag it right to make the image darker Or you can also enter a value 0 255 directly into the entry box to the rig...

Page 53: ...e scanned Business Card Statement B5 Executive Letter A4 Full Platen L Portrait L Portrait LL Landscpe LL Landscape Post Card Changing the Paper Size clears the Preview area and clears all settings set with the Toolbar or the buttons on the Tone sheet buttons Note The Scanner Sheet When you click on the Scanner tab D646U the Scanner sheet opens ...

Page 54: ...his button to open the Scanner Diagnostics dialog box Click the Start button in the Scanner Diagnostics dialog box to test your Scanner After the test is complete a message is displayed here to inform you of the results If a problem is reported after the test use your scanner instructions to troubleshoot the problem During the test do not open the document cover of the scanner Calibration Click th...

Page 55: ...55 Top Page Glossary Contents Index chapter 5 Scanning an Original Preparing for the Scanning Job Quick Start Previewing and Scanning an Original ...

Page 56: ...pplication Before you start scanning make sure the scanner is connected correctly Always position the original squarely on the scanner platen with the image side down ScanGear CS U lets you correct many undesirable features in scanned images but you will save time and effort by starting with the best possible original If you are scanning a photograph for example make sure the original is in the sh...

Page 57: ...away The referenced page numbers provide more details about the steps below If you need more information about a procedure go to that page number 1 Install ScanGear CS U p 12 2 Start ScanGear CS U p 59 64 3 Set the original 4 Select the desired Simple or Advanced mode and set the desired settings resolution etc p 22 32 37 Simple Mode Advanced Mode ...

Page 58: ...Original Top Page Glossary Contents Index 5 Preview the original p 62 66 6 Adjust image as required p 63 67 7 Set the scanning area p 63 67 8 Scan the document p 63 67 9 The image is processed For details the application manual ...

Page 59: ...view of the general procedure for previewing and scanning an original in the Simple Mode 1 Place the original on the scanner Note For details about positioning the original on the scanner see your scanner user s manual 2 Start the software application you are going to use for example PhotoStudio 2000 3 If other TWAIN driver is installed on your computer you must choose this scanner Click the File ...

Page 60: ...xample of PhotoStudio 2000 click the File menu and select Acquire See the respective manuals for other programs 5 The ScanGear CS U main window opens If the Advanced Mode main window appears click the Simple Mode button Note If you see an image in the Preview Area this means one of the preview settings has been switched on with the Preferences sheet Otherwise the Preview Area is empty ...

Page 61: ...de Resolution Width Height Size Paper Size p 33 36 If you are satisfied with these settings go on to the next step Note On the Simple Mode sheet you click one of the flat buttons the black inverted triangles to open a pop up menu and select another setting You can click the Edit Image Type button and define up to 12 custom Image Types in the Image Type Settings dialog box p 35 Click the Magazine c...

Page 62: ...ge Now adjusting lamp may be displayed Wait as is until the amount of light increases enough If you click the Cancel button in this dialog the preview scan will be executed with insufficient amount of light and the previewed image will not have the correct color balance Click the Cancel button only if you need to obtain the previewed image quickly although without the correct color balance before ...

Page 63: ...the Advanced Mode button then click the Tone tab to open the Tone Sheet p 41 10 Specify the scanning area Point to one corner of the area of the image that you want to scan Click the left mouse button and while holding the mouse button down drag the mouse pointer to the opposite corner of the area you want to scan Release the mouse button The area will be boxed in by a rectangle 11 Click the Scan ...

Page 64: ...nal on the scanner Note For details about positioning the original on the scanner see your scanner user s manual 2 Start the software application you are going to use 3 Confirm that your scanner is selected in the Select Source or its equivalent dialog box p 59 4 Start ScanGear CS U as a TWAIN driver The mothods for starting TWAIN drivers vary between application programs See the respective manual...

Page 65: ...in window appears click the Advanced Mode button Note If you see an image in the Preview Area this means one of the preview settings has been switched on with the Preferences sheet Otherwise the Preview Area is empty 6 In the Main sheet adjust the settings for the Color Mode Output Resolution Selection Scanning area and Scale ...

Page 66: ...ent the message Now adjusting lamp may be displayed Wait as is until the amount of light increases enough If you click the Cancel button in this dialog the preview scan will be executed with insufficient amount of light and the previewed image will not have the correct color balance Click the Cancel button only if you need to obtain the previewed image quickly although without the correct color ba...

Page 67: ...t you want to scan Click the left mouse button and while holding the mouse button down drag the mouse pointer to the opposite corner of the area you want to scan Release the mouse button The area will be boxed in by a rectangle 12 After performing all the settings click the Scan button to scan the image The image is acquired in the software application 13 Close the ScanGear CS U window You can edi...

Page 68: ...68 Top Page Glossary Contents Index chapter 6 Settingsinthe WindowsControlPanel Opening Scanners and Cameras Properties General Settings Preferences Settings Color Management Settings ...

Page 69: ...ners and Cameras Properties dialog can be opened with the following procedures Be sure to close ScanGear CS U for this operation 1 On the Windows desktop click the Start button point to Settings and click Control Panel 2 In the Control Panel window double click the Scanners and Cameras icon 3 In the Scanners and Cameras Properties window click the name of the scanner and click the Properties butto...

Page 70: ... sheet 5 Confirm that the settings are apropriate Otherwise make changes as necessary After the changes are made click the Apply button to validate the changes 6 Click the OK button The dialog is closed and the Scanners and Cameras properties dialog is activated 7 Click the OK button The setting are completed The changes will be effective the next time you launch the ScanGear CS U ...

Page 71: ... diagnostic testing Executing a Diagnostic Test Follow the procedure below to execute the scanner diagnostic test 1 Click the Test Scanner button The scanner diagnostic test begins If the test detects no problems a message will tell you that the scanner has passed the diagnostic test 2 Click the OK button Note You cannot perform the scanner diagnostic test while ScanGear CS U is starting ...

Page 72: ...are sets the Color Mode to Black and White The default setting is Off Color Settings When the Color Mode is set to Color you can select the color adjusting method for scanning from Standard Canon ColorGear Color matching or None The default setting is Standard Recommended This setting adjusts the colors of the scanned original to match colors displayed on the monitor This setting is suitable when ...

Page 73: ...nGear CS U is launched and an image of the original on the scanner is displayed in the Preview Area Display saved preview image This setting switches the preview image cache feature on When this feature is selected the image in the Preview Area is saved when ScanGear CS U is closed and then displayed again the next time ScanGear CS U is launched Clicking the Clear button clears the cached image fr...

Page 74: ...anon ColorGear Color Matching Click the Canon ColorGear Color Matching check box on in the Preferences sheet The sRGB Color Space Profile is added automatically when ScanGear CS U is installed If several profiles have been added only the most recent profile added is enabled Even if you delete all profiles the sRGB Color Space Profile will remain automatically selected ...

Page 75: ...75 Top Page Glossary Contents Index chapter 7 Troubleshooting Pre Scan Checklist How to Avoid Problems Troubleshooting Checklist ...

Page 76: ... sure that the ScanGear CS U software was installed successfully Confirm that the cables between your computer and scanner are connected securely Before scanning or previewing check that the data source has been selected If your scanner does not appear as an option when you select a TWAIN source to scan from your imaging software you have to install ScanGear CS U again p 12 ...

Page 77: ...ing files that require a large amount of disk space Match your Color Mode to the output purpose If you are scanning text use the Text Enhanced mode If you are scanning line art use the Black and White setting and so on Match your scan resolution to the type of file you need If you are scanning images for use as GIF or JPG files on the Web you do not have to scan at 600 dpi Although it is recommend...

Page 78: ...r 7 Troubleshooting Top Page Glossary Contents Index If you are using OCR software scan in Text Enhanced at 300 dpi or higher Take advantage of the preview feature and preview as much as you want before scanning ...

Page 79: ... image Cause1 The scanned colors need to be adjusted Solution Make sure the Auto Tone button is selected If further adjustments are necessary use the Tone sheet buttons Cause2 The calibration slot on the film guide is obstructed Solution Clear the item blocking the calibration slot The preview image of a photograph appears blurred but the scanned image of the same photograph appears sharp Problem ...

Page 80: ...he color balance in the printer driver manually Solution2 Change the Gamma value setting of the printer driver The software application cannot find the scanner Problem When trying to scan an error message says the scanner cannot be found Cause Windows may not recognize your scanner Solution Make sure the scanner is connected to your computer before you turned on the computer and started Windows If...

Page 81: ... to your computer before you turn on the computer and start Windows If not connect the scanner Then restart your computer Cause2 You may have chosen the wrong scanner source in your software application Solution Make sure you selected the correct scanner in the parent software application For details see your software application documentation for instructions Cause3 The scanner configuration file...

Page 82: ...ee if there is enough memory available in your computer Before scanning quit other applications that are not in use Cause 2 DMA option for computer s hard disk drive is not turned on Solution Turn on the DMA option in the System Properties dialog as described below Windows 98 Me 1 Right click the My Computer icon on the Windows desktop 2 Select Properties from the pop up menu and click the Device ...

Page 83: ...TA ATAPI Controllers 4 Select Primary IDE Channel right click it to show the pull down menu and select Properties 5 Click the Advanced Settings 6 In the Device 0 select DMA if available in the Transfer Mode 7 Click OK 8 Close the Device Manager window and click OK to close the System Properties window 9 Restart the Computer Please consult the manufacturer of your computer for confirmation that the...

Page 84: ...the original Cause Image and color adjustments may not have been set properly Solution The best solution is to scan the image using all default settings again Then make imaging and color adjustments as necessary The preview image is too small on the monitor Problem The image in the Preview Area is very small and cannot be viewed in the Preview Area for adjustment Cause If you have a high resolutio...

Page 85: ...85 Top Page Glossary Contents Index Glossary ...

Page 86: ...ched from the parent software application To switch this feature on and off open the Preferences sheet for your scanner and click the button for Automatically execute a preview p 73 Bits and Bit Depth A bit Binary digit is the smallest possible unit of information on a computer it represents yes or no on or off 1 or 0 Bit Depth is used to describe the complexity of a graphic image One bit or bi le...

Page 87: ...tion refers to the adjustment of color processing for input and output devices on a computer so that the colors match throughout the process For example calibration ensures that the color image scanned on a scanner matches the original image when it is displayed on the computer monitor as well as printed on a color printer Canon ColorGear Color Matching Canon s process of matching the color profil...

Page 88: ... monitor can produce Color matching lets your system display colors so that the color on your monitor and printer matches the colors scanned See also Canon ColorGear Color Matching Color Mode The type of scan used to scan an image differentiated by the number of bits per pixel ScanGear CS U has the following Color Modes Color Grayscale Text Enhanced OCR and Black and White Contrast Contrast refers...

Page 89: ...d image and the available feature settings Curve file A file containing Special Tone Curve settings Tone tab Special Tone Curves Custom curves A user defined Special Tone Curve that may be saved in a file Tone tab Special Tone Curves Default The preset factory settings on hardware or software Digitizing The process of converting an image into computer usable digital information that can be saved a...

Page 90: ...sed to sample the Black point Mid point and White point areas in the previewed image Tone tab Histogram Full Platen The maximum scanning area on the scanner s document glass 216 x 297 mm width of U S Letter and length of A4 paper sizes Gamma Curve The Gamma Curve lets you change the midtones of colors to increase the contrast between colors and enhance the overall image When you increase the Gamma...

Page 91: ...current selection or if there is no selection the maximum vertical output size based on the currently selected Paper Size Histogram The Histogram displays the distribution of bright and dark pixels for each color channel in the previewed image The Eyedropper tool on the histogram graph lets you redefine the tonal profile Keep Proportions button The Keep Proportions button affects the selection and...

Page 92: ... patterns are caused by poor dithering as a result of scanning images from published materials like newspapers magazines books etc When the Descreen feature is on moiré reduction smoothes the overall appearance of the image and enhances image quality OCR Optical Character Recognition OCR Optical Character Recognition software converts text images into actual text characters readable by a word proc...

Page 93: ...ixel An acronym for picture element a pixel is the smallest element used to create a screen image It can contain up to 42 bits of color information Platen The scanner s document glass where originals are placed for scanning Preset Curves A set of curves designed to fix common photographic image problems such as underexposure overexposure or low contrast Preview Area The area located to the left of...

Page 94: ...enever you change either the width or the height Resolution The degree of detail translated into the number of pixels or dpi which a device such as a scanner video monitor printer or other image displaying device can display or reproduce See also dpi Pixel Scan Resolution Rotate Left The Rotate Left tool rotates the preview display 90 degrees counterclockwise If the Preview Area is in portrait ori...

Page 95: ...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 Resolution list See also dpi Pixel Resolution Sliders On some of the controls in ScanGear CS U for example the Contrast Brightness tool you click the slider and move it to the left or to the right to change t...

Page 96: ... gray pixel is determined to become either black or white The Threshold slider is on the Halftone sheet Adjust the Threshold value when you are scanning a grayscale or halftone original with the Black and White setting Tone Curve The curve displayed with the Tone tab tools to indicate the Black Mid and White point tones in a color or grayscale preview image You cannot edit the curve except with th...

Page 97: ...f Universal Serial Bus an interface for external devices connected to a computer and easilly used simply by plugging and unplugging the USB cable while the computer is switched on 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 Width The Widt...

Page 98: ...ndex 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 window or in a graphics application ...

Page 99: ...99 Top Page Glossary Contents Index Index ...

Page 100: ... ImageTrust 87 CanoScan Setup Utility CD ROM 16 19 Channel 44 45 47 49 87 Clear Button 27 31 88 Close Box 27 Close the ScanGear CS U 63 67 Color Channels 88 Color Management Settings 74 Color Matching 88 Color Mode 33 37 88 Black and White 37 Color 38 Grayscale 37 Text Enhanced OCR 38 Contrast 44 88 Contrast Brightness button 42 Contrast Brightness Sheet 44 Crop 89 Crop Button 28 Curve chart 89 Cu...

Page 101: ...ton 42 Histogram Sheet 47 I Image Type 32 Install 12 K Keep Proportions button 40 91 L Low contrast 91 M Magazine 36 Main Sheet 37 Mid point 48 92 Mid tone 92 Mirror Button 29 Mode Switching Button 27 moiré reduction 92 Move Image Button 28 N Negative Positive Button 29 O OCR Optical Character Recognition 92 On line Help 10 Optical resolution 92 Output Dimensions 92 Output Resolution 39 Output siz...

Page 102: ...5 94 Rotate Left 94 Rotate Left Button 29 Rotate Right 94 Rotate Right Button 30 Rulers Button 30 S Sampling 94 Scale 40 95 Scan 63 67 Scan Button 27 31 95 Scan Resolution 95 ScanGear CS U main window 60 65 Scanner 95 Scanner Gamma 46 Scanner Sheet 53 Test Scanner 54 Scanners and Cameras properties 69 Scanning area 63 67 Select Special Curve 49 Selection 40 Setting Tab 27 Simple Mode 21 Simple Mod...

Page 103: ...rve 96 Tone Sheet 41 96 Tool Bar 27 28 96 Troubleshooting 75 TWAIN 97 TWAIN driver 60 64 U Underexposed 97 Uninstall 19 Units 40 Unsharp Mask 54 97 USB 97 USB port 12 W White point 48 97 Width 35 97 Width and Height 40 Width Height ratio 97 Window Resize Corner 27 Windows 2000 Professional 8 X X and Y Axes 98 Z Zoom Tool Button 29 Zooming 98 ...

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