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The TWAIN Dialog Box

The TWAIN dialog box is another scanning option
provided with your scanner. TWAIN is an industry
standard that allows scanning directly into any TWAIN-
compliant software. It eliminates most compatibility

problems associated with software and input devices
supplied by different vendors.
You can access the TWAIN dialog box from within most
image editing software such as the application software
bundled with the scanner (e.g. iPhoto Plus).

Summary of Contents for ScanExpress A3

Page 1: ...1 TheScanDialogBox Appendices TheTWAINDialogBox SCANNER USER S GUIDE 82 051 00030 ...

Page 2: ... Image 10 3 Select the Scan Size 11 4 Use the Crop Frame 11 5 Set the Scan Mode 11 6 Set the Resolution 11 7 Execute the Scan 11 TheTWAINDialogBox Details 12 The Preview Window and Buttons 13 The Image Setting Buttons 15 Scan Settings 16 The Main Tab 16 The Enhance Tab 19 The Filters Tab 22 About Tab 23 Using Batch Scan 24 Batch Scan Controls 24 Batch Scan Status 25 To Perform a Batch Scan 25 Appe...

Page 3: ... scan an image The Scan dialog box which is ideal for quick and simple scans and the TWAIN dialog box which offers more control over the output The following pages contain more details about these different scanning methods ScanDialogBox TWAINDialogBox ...

Page 4: ...ou wish to use by clicking on the appropriate page icon and the corresponding menu page will appear Be sure to make the proper adjustments in regards to Paper Size Scan Mode and or Resolution before clicking on the Scan icon Scan Page Icon Copy Page Icon E Mail Page Icon OCR Page Icon Fax Page Icon Exit Help Information Mailing Icon Menu Page Scan Icon ...

Page 5: ...e Scan Dialog Box Todi s abl et heCoverSens o r right click the Direct Scan icon below in your Windows taskbar A pop up menu appears allowing you to disable or enable the Cover Sensor feature To Acquire the Scan Dialog Box OR The Direct Scan Icon Double click the Direct Scan icon located in your Windows taskbar and the Scan dialog box opens ...

Page 6: ...ck the Scan icon to begin scanning Copy Page Copy an image or document to your printer Prior to scanning use the Print icon to select the appropriate printer from within your computer Click the Scan icon to begin copying Function Buttons Scan Icon Initializes the function of the Menu page currently selected e g Copy Page Copy Fax Page Fax Exit Exits the Scan dialog box Help Enters the scanner s on...

Page 7: ...onal destination addresses to your e mail Click the Scan icon to begin sending your information across the Internet OCR Page Convert an image document to a text file using TextBridge Classic Click the Scan icon to execute the OCR function TextBridge will automatically open showing an image thumbnail of the scanned document Save the document as desired then open the document using your word process...

Page 8: ... that allows scanning directly into any TWAIN compliant software It eliminates most compatibility problems associated with software and input devices supplied by different vendors You can access the TWAIN dialog box from within most image editing software such as the application software bundled with the scanner e g iPhoto Plus ...

Page 9: ...e dialog box appears Note In some image editing software you may choose Select Source from the Select Source command 4 Choose your scanner in the Select Source dialog box If there is only one source available it is automatically selected 5 Click the Select button 6 Return to the File menu Locate the Acquire command and select Image 7 In the Acquire Image box select New Image and click Acquire The ...

Page 10: ...ossible image scans it is important that you position your documents correctly Please follow these steps a Lift the document cover b Place the document face down on the glass and in the upper right corner where the alignment arrow is located c Slowly lower the document cover making sure the document remains in position Note Remove the document after scanning is complete 2 Preview the Image A Previ...

Page 11: ...he image area you wish to scan Click one of the sides or corners of the Crop Frame and drag it to the desired length and width To move the entire Crop Frame position the mouse cursor inside it and drag with the left mouse button Only the area inside the Crop Frame will be included in the resulting scanned image when you click on the Scan button 5 Set the Scan Mode The Scan Mode determines how the ...

Page 12: ... your scanner software please refer to the on line help system by clicking on the Help icon Cropping Tool Allows for Crop Frame creation in the Zoom mode Zoom Magnifies or shrinks the image in the Preview Window Batch Scan Allows up to 10 scan regions or Crop Frames for multiple scanning Preview Window Crop Frame Outlines the image area that will be included in the final scan Exit Exits the progra...

Page 13: ...s the image area you wish to scan Click one of the sides or corners of the Crop Frame and drag it to the desired length and width To move the entire Crop Frame position the mouse cursor inside it and drag with the left mouse button Use the cropping tool with the zoom tools to set the exact image area you wish to include in your final scan ThePreviewWindow Buttons The Preview window is where the pr...

Page 14: ...image shown in the Preview Window For more details please refer to Using Batch Scan on page 24 Scan After determining the exact image area you wish to scan and selecting your desired scan settings click the Scan button to perform the scan When scanning is complete the image will be displayed on the main screen of the host software behind the TWAIN dialog box Help Provides on line help for the scan...

Page 15: ...gs again and again without resetting the image options Load Button Loads previously saved settings Save Button Saves current image settings to a specified location Previous Button Reloads the last saved image settings Reset Button Returns the image settings to their default values Information Button Displays all the current control settings of the TWAIN dialog box ...

Page 16: ... Scan Mode determines how the scanner reads the original image or document When choosing a scan mode it is recommended to consider what purpose the resulting scanned image will be used for LineArt Use this mode to scan text documents for use in OCR Optical Character Recognition or when you wish to scan black and white drawings Gray Select Gray to capture images in shades of gray Color Select Color...

Page 17: ...ally be selected when you use the Crop Frame to change the image area to be scanned Resolution The Resolution which is measured in dots per inch dpi determines the appearance of the image as it is displayed or printed Images scanned at a higher resolution capture more information and therefore require more disk space for storage You can select from a wide range of preset resolutions 75 dpi 400 dpi...

Page 18: ...est and darkest areas of an image so that they are equally distributed Without Color Balance With Color Balance Output Scaling Output scaling allows you to enlarge shrink the size of the final output image Adjust the scaling by using the slide bar or typing the desired setting in the Output Scaling box For example setting the Output Scaling to 200 will double the amount of pixels contained in the ...

Page 19: ... the effects of your changes in the Preview Window click on the Preview button Channel Selector Channel refers to the red green and blue colors that make up a color image You can choose to change the channels individually or choose Master to change all channels equally and simultaneously An image in Gray Mode has one channel Histogram The Histogram graph shows the distribution of brightness levels...

Page 20: ...bright Brightness 50 Brightness 0 Brightness 50 Contrast Control Using 255 steps this tool controls the disparity in tone between the dark and light areas of an image Positive values create greater differences between dark and light areas of the image whereas negative values create greater similarities between the dark and light areas of the image Contrast 50 Contrast 0 Contrast 50 Gamma Control T...

Page 21: ...reas a value of 6 4 would subtract light from these highlight areas The histogram will display these gamma value effects in the top left portion of the histogram graph signifying highlights Gamma 0 6 Gamma 1 5 Preview Button Check the Preview box to see any changes made to the image The changes will appear in the Preview window ...

Page 22: ...ffect in the sample thumbnail None No filter is applied if None default setting is selected Blur The Blur filter smoothes the image by lightening the pixels that are in sharp contrast to their neighboring pixels The amount of blur applied is controlled with the plus and minus buttons Sharpen The Sharpen filter enhances the detail in blurry images by improving the focus and increasing the contrast ...

Page 23: ...age horizontally Unsharp Mask The Unsharp Mask filter detects sharp edges and color boundaries and then emphasizes them Emboss The Emboss filter makes the elements in an image appear raised or sunken by reducing the color within the image and tracing its edges with black AboutTab The About tab contains the current driver version number information about the interface device and the copyright notic...

Page 24: ...s using different scan modes resolutions filters and more Batch Scan Controls Load Batch Scan loads previously saved batch scan settings Save Batch Scan saves the current batch scan settings Create Batch Scan allows the user to create a new batch scan Duplicate Batch Scan duplicates the selected batch scan settings Delete Batch Scan deletes a batch scan Exit Batch Scan exits the batch scan box Bat...

Page 25: ... 1 out of ten is always displayed at the top of the batch box along with the Batch Scan Status To Perform a Batch Scan 1 Click on the Batch Scan button The Batch Scan dialog box appears 2 Create a scan region a Move the cursor inside the preview window b Hold down the Shift key press the left mouse button and drag the mouse to create a crop frame c Reposition or resize the crop frame if necessary ...

Page 26: ...for different scan modes AppendixA ScanningTips The following tables provide helpful information you can use when setting the scan mode and or resolution Recommended scanning resolutions for various output devices are listed as follows ...

Page 27: ... that you have the proper driver disks to restore your system to the original settings You should be using a driver that provides 16 million colors and a resolution of at least 800 x 600 4 What resolution should I scan at You should scan at the resolution of your output device If scanning for Web Pages the output device is a computer monitor which has a resolution of 72 DPI So scan at 72 DPI for t...

Page 28: ...to change without notice Scanner Type Flatbed Scan Modes True Color 36bits internal 68 7 billion colors 24bits external 16 7 million colors Gray Mode 12bits internal 4096 shades of gray 8 bits external 256 shades of gray Text Line Art 1 bit pixel 2 levels Scan Method 1 Pass Scanning Scan Area 297 x 431 mm 11 7 x 17 Resolution Optical 300 dpi H x 600 dpi V Maximum 9600 dpi x 9600 dpi through softwa...

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