EPSON TWAIN User’s Guide
Copyright Notice All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SEIKO EPSON CORPORATION. The information contained herein is designed only for use with this EPSON scanner. EPSON is not responsible for any use of this information as applied to other scanners.
Trademarks EPSON is a registered trademark of SEIKO EPSON CORPORATION. Perfection and EPSON FaxAdvice are trademarks and EPSON SoundAdvice is a service mark of Epson America, Inc. General Notice: Other product names used herein are for identification purposes only and may be trademarks of their respective companies. Copyright © 1999 by Epson America, Inc.
Contents Contents Introduction 6 System Requirements 7 How To Use This Manual 8 Scanning 10 Scanning Overview 11 Starting EPSON TWAIN 12 Selecting Settings 15 Previewing Your Scan 19 Using Marquees 20 Using the Start Button 22 Preparing to Use the Start Button 22 Scanning with the Start Button 36 Page 4
Contents Using the EPSON TWAIN Utilities 41 Using the Scanner Monitoring Utility 42 Using the EPSON Screen Calibration Utility 43 Troubleshooting 46 Problems Using EPSON TWAIN 47 Problems Using the Start Button 50 Problems with Image Quality 52 Where To Get Help 57 Glossary 59 Index 61 Page 5
Introduction EPSON® TWAIN is the interface program between your application software and scanner that lets you scan images into your software. It is the ideal interface for producing professional quality images, scanning text into optical character recognition (OCR) programs, and managing text pages in NewSoft™ Presto!™ PageManager.
System Requirements Before installing the scanner software, make sure your system meets the following requirements. The color and tone of your scanned image depend on the display capabilities of your computer system, including the video controller, monitor, and software.
Macintosh System Requirements EPSON TWAIN supports the Apple® ColorSync™ 2.X color management system and QuickTime.™ If your system is running OS 8.1, you must download and install the iMac Update 1.0 from Apple at http://swupdates.info .apple.com before you install the EPSON USB software. Contact Apple Computer if you have problems installing this update. If your system is running OS 8.5, you don’t need this update. Your operating system already includes full support for the EPSON USB software.
Using the Start Button gives step-by-step instructions on setting up and using your scanner’s Start button for one-touch scanning. Troubleshooting provides solutions to problems you may encounter. At the end, you’ll find a Glossary and an Index. Cautions, Notes, and Tips You’ll find this information throughout your manual: Cautions must be observed to avoid damage to your equipment. Notes contain important information about your scanner. Tips contain additional hints for better scanning.
Scanning The screen examples in this book are from EPSON TWAIN for Windows. The screens for Macintosh look a bit different, but they contain the same options. Any exceptions are noted in the text. Scanning Before scanning, make sure you’ve installed the EPSON TWAIN software (as described in the Scanner Basics book) and the application software that supports EPSON TWAIN, such as PictureWorks™ HotShots™ or Presto! PageManager.
Chap1.fm Page 11 Tuesday, August 10, 1999 3:20 PM Scanning Overview Here is a brief overview of scanning steps using EPSON TWAIN (the Windows interface is shown; the Macintosh steps are the same): 1 Select the tab for your scan: Photo or OCR/Line Art. 2 Select your basic scan settings. 3 Draw a marquee around the area you want to scan. 3 Draw a marquee around the area you want to scan. 4 Click Scan.
Starting EPSON TWAIN Follow the steps in this section to start EPSON TWAIN from your application software. The steps may vary, depending on your application. If you start your application software before turning on your scanner, the software may not work properly. 1 Make sure you set up and plugged in the scanner. Then place the document you want to scan on the document table. See the Scanner Basics book for instructions. The steps in this section cover scanning with common TWAIN-compliant applications.
4 Select EPSON TWAIN L and click Select. 5 Start EPSON TWAIN for scanning. Open the File menu and choose Import or Acquire and then select either TWAIN_32 (Windows) or TWAIN Acquire (Macintosh).
The EPSON TWAIN window appears. The EPSON TWAIN window contains the basic settings you need to scan an image. See Selecting Settings for details. It also lets you preview your image. See Previewing Your Scan for details. To keep file size small when scanning at higher resolutions, you should use a marquee around only the scanning area. See Using Marquees for details.
Selecting Settings You need to scan using the tab for the type of image you are scanning (Photo or OCR/Line Art) and check the basic settings. Scanning Photographs 1 Select the Photo tab. 2 Select the correct Image Type setting. Select one of the following options: Color Photo or Black and White Photo.
3 If you need to change the resolution, select a new setting from the Resolution list. If you are scanning something that will be used on a web page, you can select 75 dpi for your resolution setting. If you plan to print your image or enlarge it, you should choose a higher resolution such as 300 dpi or 600 dpi. 4 Select Quality or Speed under the Color Management settings. You can also select De-screening (eliminates moiré patterns) and Unsharp Mask (sharpens the image) to adjust the quality of your scan.
Scanning Text or Line Art 1 Select the OCR/Line Art tab. 2 Select a threshold setting. These automatically select resolution and sharpness settings appropriate for the output type. Select one of the following options: Newspaper, Magazine, Printout, Book, or User Defined. resolution threshold settings threshold slider If you select User Defined, adjust the slider until the preview looks the way you want your image to appear.
3 If you need to change the resolution, select a new setting from the Resolution list. If you are scanning something that will be used on a web page, you can select 75 dpi for your resolution setting. If you plan to print your image or enlarge it, you should choose a higher resolution such as 300 dpi. Make sure you use a marquee to select the scan area, especially if you are scanning at a resolution of 300 dpi, or higher. See Using Marquees for details.
Previewing Your Scan You can preview your image to see the effects of your settings before scanning. Previewing also allows you to determine the width and height of the scanned image and the final file size. Configuring Preview Settings Click the Configuration button. You see the following screen. Check Automatic Preview to automatically preview the scan and update it as you make resolution and other setting changes.
Chap1.fm Page 20 Monday, August 9, 1999 5:58 PM Using Marquees A marquee is a frame around an entire image, or a portion of an image so you can scan only the most important part. To create a marquee, follow these steps: If the mouse pointer doesn’t change to a cross hair, click the Preview button again. 1 Move the mouse pointer over the preview image; the pointer becomes a cross hair. 2 Position the pointer in the corner of the area you want to select and press the mouse button.
Adjusting a Marquee To resize a marquee, place the mouse pointer over its edge; the pointer changes to a double-headed arrow. Click the mouse button and drag the box up, down, sideways, or diagonally to the size you want. To resize a marquee and retain its width-to-height proportions, hold down the Shift key as you drag the edge of the marquee. To move a marquee, place the mouse pointer anywhere in the marquee image area; the pointer changes to a hand.
Using the Start Button The scanner’s Start button lets you set up your system for one-touch scanning with Presto! PageManager and a scanner monitoring utility. With one-touch scanning, you can load a document in the scanner, press the Start button, and watch while PageManager starts and then opens EPSON TWAIN automatically. You can even set up PageManager to automatically load your scanned document into another application— such as HotShots— or send it to another device —such as your printer.
Enabling Scanner Monitoring When you installed EPSON TWAIN on your system, the installer automatically installed the TWAIN utilities, including these scanner monitoring utilities: ◗ Scan Events monitor in the Scanners and Cameras utility (Windows 98) ◗ EPSON Scanner Monitor (Macintosh) These utilities let your scanner’s Start button communicate with your operating system and open PageManager (or another Windows 98, Start button compliant program).
Setting Up Monitoring for Windows 98 The Scan Events monitor installed into the Windows 98 Scanners and Cameras utility is automatically enabled and ready to scan to PageManager (and any other Start button compatible programs) when you press the Start button. If you ever want to disable (or enable) Start button scanning, follow these steps: 1 Click Start, point to Settings, and click the Control Panel icon. 2 Click the Scanners and Cameras icon.
4 Click the Events tab. You see this dialog box: Disable device events checkbox 5 To disable Start button scanning, click the Disable device events checkbox; a check appears in the checkbox. To enable Start button scanning, click the Disable device events checkbox to uncheck it. Then click the checkbox for each application you’d like to be able to use with the Start button. If you select more than one application, you’ll be prompted for the application you want to use when you press the Start button.
Setting Up Monitoring for Macintosh The EPSON Scanner Monitor installed with EPSON TWAIN on the Macintosh is automatically enabled and set up to scan with PageManager when you press the Start button. If you ever want to disable the EPSON Scanner Monitor, do the following: 1 Select EPSON Scanner Monitor Setup from the Apple menu; you see the EPSON Scanner Monitor dialog box. 2 Click the Enable Monitoring checkbox to uncheck it. 3 Click OK.
Setting Up PageManager for Start Button Scanning To set up other Start button compliant applications on Windows 98, see the application documentation for instructions. The PageManager program icon on the Macintosh is different; it is shaped like a desktop inbox. See PageManager online help for details. To use PageManager with your scanner’s Start button, you must set up PageManager’s Scan Buttons palette and assign a destination program or device to the Start button.
Assigning a Destination to the Start Button PageManager is the default destination program for the Start button. To assign another destination to the Start button, follow these steps: 1 Open the File menu and select Scan Buttons Setting. You see the Scan Buttons Setting dialog box. Click the Start Button Settings tab. If you select a program or device for which you suppressed the TWAIN interface, be sure to set PageManager’s scan settings before you press the Start button.
Adding a Destination to the Scan Buttons Palette If you want to add program or device icons to the Scan Buttons palette, follow these steps: 1 Open the File menu and select Scan Buttons Setting. You see the Scan Buttons Setting dialog box. Click the Properties tab, if necessary. Properties tab Scan to setting list Add button 2 Click the Add button. On the Macintosh, you see the Add scan button dialog box. 3 Click the arrow in the Scan to (Windows) or Scan to App (Macintosh) setting box.
4 Type a name for the icon in the Name field. On an Macintosh, click OK to close the Add scan button dialog box. For the best results, don’t suppress the EPSON TWAIN interface when scanning with the Start button. This lets you preview and adjust your image settings the way you want them before you scan. 5 If the Suppress TWAIN User Interface checkbox is active, you can select whether you want PageManager to open the EPSON TWAIN dialog box when you press the Start button.
If these settings are active, select the scan settings you want to use whenever you press the program or device icon; see Selecting Scan Button Settings for details. 7 If you want to assign a new destination program or device to the Start button, see Assigning a Destination to the Start Button for instructions. 8 When you’re finished adding programs or devices, click OK.
Reassigning Destinations on the Scan Buttons Palette You may want to reassign an existing icon to a different program or device, or just change its settings. For example, if you use more than one printer, you may want to reassign the printer icon to each printer as you need it. 1 Open the File menu and select Scan Buttons Setting; then click the Properties tab, if necessary.
5 If you want to assign a new program or device to the Start button, see Assigning a Destination to the Start Button for instructions. 6 When you’re finished reassigning destinations, click OK. Selecting Scan Button Settings If you select a device or program for which you’ve checked the Suppress TWAIN User Interface checkbox, the PageManager scan settings become active.
The table below describes the settings and their available options. Setting Options Description Document Type (Windows only) Magazine (Text and Picture) Magazine (Picture) Photograph Document Letter Business Card Others Select the type of original you’re scanning so PageManager can choose the best default options for the rest of the settings. Select Others to customize a different document type. Scan Mode Color Gray Black and White Select the color specification of the original you’re scanning.
Setting Options Resolution 72 100 150 200 240 Enable Document Feeder Make sure this setting is not selected. The document feeder option is not available for this scanner. Brightness –100 to 100 Adjust the brightness of the scan as necessary. This setting appears only when the Scan Mode is set to Color or Gray. Contrast –100 to 100 Adjust the contrast of the scan as necessary. Threshold 0 to 255 Adjust the threshold for the highlights and shadows of the scan as necessary.
Scanning with the Start Button Once you’ve set up your scanner monitoring utility and configured PageManager to handle your scanned images the way you want, you’re ready to scan with the Start button. The sequence of steps varies (as noted in the text), depending on whether you’ve elected to suppress the TWAIN interface or not, and whether you’ve set up PageManager to send your scanned images to another application or not.
Follow these steps to scan with the Start button: 1 If you’re scanning a single page on the scanner’s document table, place the document face down and align its horizontal and vertical edges with the scales on the top and right side of the document table. nd, Dear Frie t lette r tha This is a you itin g to I am wr 2 Press the scanner’s Start button.
3 In Windows, if you’ve selected more than one application to use with the Start button in the Scan Events utility, you see this dialog box: For instructions on changing the applications available for use with the Start button, see Enabling Scanner Monitoring. Click Presto! PageManager for EPSON and click OK. (If the dialog box disappears before you select an application, press the scanner’s Start button again.
If you didn’t suppress the TWAIN interface, the EPSON TWAIN window opens in PageManager, along with the Scan Buttons bar. Go to step 5. 5 To scan a document for an OCR application, select the following settings in EPSON TWAIN: Select the OCR/Line Art tab. Threshold: Select Book or User Defined (and adjust the slider control until you have a clear preview) for the best OCR results.
Resolution: Select 300 dpi for the best OCR results. (If you’re scanning a different type of document, select the settings for it as necessary. See Selecting Settings for more information.) 6 Click the Preview button to prescan the image. Make sure you use a marquee to select the scan area, especially if you are scanning at a resolution of 300 dpi, or higher. See Using Marquees for details. 7 Draw a marquee around the area you want to scan. 8 Click the Scan button to scan your document.
Using the EPSON TWAIN Utilities These sections give instructions for using the utilities installed along with EPSON TWAIN to help you scan and calibrate your system: ◗ Using the Scanner Monitoring Utility ◗ Using the EPSON Screen Calibration Utility Using the EPSON TWAIN Utilities Page 41
Using the Scanner Monitoring Utility When you installed EPSON TWAIN on your system, the installer automatically installed one of these scanner monitoring utilities: ◗ Scan Events monitor in the Scanners and Cameras utility (Windows 98) ◗ EPSON Scanner Monitor (Macintosh) The scanner monitoring utilities let you use one-touch scanning with the scanner’s Start button and the Presto! PageManager software.
Using the EPSON Screen Calibration Utility When you installed EPSON TWAIN on your system, you calibrated your screen at the end of the installation sequence. If you change your monitor or want to re-calibrate your screen, you can run the EPSON Screen Calibration utility again. Calibrating your screen improves the accuracy of your preview images in EPSON TWAIN.
3 If necessary, click the Devices tab. Click your scanner name in the box, then click the Properties button. 4 On the next screen, click the Utility tab. You see this dialog box: Utility tab Screen Calibration Utility icon 5 Click the Screen Calibration Utility icon. You see the following: View the screen from a short distance when you calibrate it. The gray stripes won’t blend perfectly together; however, try to make them match as closely as possible.
6 Click and drag the slider box or click the left or right slider arrows until the shades of the gray stripes match as closely as possible. 7 Click OK. The profile is saved. 8 Click OK at all the open windows to close them and return to the Control Panel. Calibrating the Macintosh Screen Follow these steps to calibrate your screen: 1 Open the EPSON Scanner folder and select EPSON Screen Calibration. You see the following dialog box: View the screen from a short distance when you calibrate it.
Troubleshooting If you encounter any problems using EPSON TWAIN, try the solutions in these sections: ◗ Problems Using EPSON TWAIN ◗ Problems Using the Start Button ◗ Problems with Image Quality If the information here doesn’t help you solve the problem, check with your dealer or contact EPSON. See Where To Get Help for contact information.
Problems Using EPSON TWAIN The rows in the Screen Calibration dialog box never seem to match closely enough. Problem Solution You’re viewing the screen too closely. View the screen from a short distance when you calibrate it. The gray stripes won’t blend perfectly together; however, try to make them match as closely as possible. Your monitor adjustments may be off. Try adjusting your monitor’s brightness and contrast settings. When you select a TWAIN source, EPSON TWAIN isn’t listed.
Problem Solution Your system doesn’t meet the minimum requirements. Make sure your computer, scanner, and software are compatible and meet the specifications under System Requirements. EPSON TWAIN needs more memory. Make sure EPSON TWAIN can access enough system memory. See the section on memory allocation in your computer manual. EPSON TWAIN is not selected as your TWAIN source. EPSON TWAIN may not be selected as the TWAIN source in your application.
Problem Solution You’re scanning a large image and running out of system memory. If the image you’re scanning is too large or if your system has a minimum amount of memory installed, you may run out of memory when you scan. You usually get an error message or your system locks up when this happens. Reduce the image size or resolution and try scanning again. If you still can’t scan the image, add more system memory.
Problems Using the Start Button You see the message “No Push button scanner detected.” on your Macintosh. Problem Solution Scanner monitoring doesn’t detect the scanner. The EPSON Scanner Monitor (Macintosh) periodically checks on the status of your scanner to make sure it’s ready. Sometimes the scanner check occurs when your system is processing other information and the scanner is not detected during that particular check. (You may see this message anytime, not just when you press the Start button.
Problem Solution PageManager is not installed or the scanner monitor isn’t pointing to it. Make sure you installed PageManager correctly as described in the Scanner Basics book. Also make sure the scanner monitoring utility still points to PageManager as the target application for Start button scanning. See Enabling Scanner Monitoring for instructions.
Problems with Image Quality The image is distorted or blurred. Problem Solution The document isn’t positioned correctly on the document table. Make sure that the document is placed flat against the document table and that no part of the original is wrinkled or warped. You may have moved the document during scanning. Check the position of the document. Make sure the scanner isn’t tilted or placed on an unstable surface. Color is patchy or distorted at the edges of the document.
Problem Solution Your monitor isn’t calibrated or isn’t adjusted correctly. Make sure you have calibrated your monitor to your scanner as described in Using the EPSON Screen Calibration Utility. Also check your monitor’s brightness and contrast settings. The colors on the monitor seem different than the original image or printed image. Problem Solution Your monitor may not be calibrated correctly.
The printed image is larger or smaller than the size of the original. Problem Solution You may have changed the image size. Check the image size settings in your application. (In HotShots, click Get Info in the Image menu.) Also, some applications display high resolution images on lower resolution monitors so they appear larger than their original size. The printer can’t print the image, or the printout is garbled. Problem Solution Your printer and computer may not be securely connected.
The quality of an enlarged image is worse than when it’s scanned at its original size. Problem Solution You didn’t increase your Resolution setting to compensate for the image enlargement. If you plan to enlarge your image by scaling, be sure to increase the Resolution setting by the same proportion to retain your image quality.
Character recognition is inaccurate after OCR scanning. Problem Solution You scanned the document using incorrect source tab. Scan the document again using the OCR/Line Art tab in EPSON TWAIN. This automatically turns on the Text Enhancement Technology setting that eliminates background document noise. See Selecting Settings for details.
Where To Get Help EPSON provides technical assistance through electronic support services and automated telephone services 24 hours a day. The following tables list the contact information: Service Access World Wide Web From the Internet, you can reach EPSON’s Home Page at http://www.epson.com. EPSON Internet FTP Site If you have Internet FTP capability, use your Web browser (or other software for FTP downloading) to log onto ftp.epson.
Service EPSON SoundAdvice Access SM For pre-recorded answers to commonly asked questions about EPSON products 24 hours a day, seven days a week, call (800) 922-8911. EPSON FaxAdvice™ Access EPSON’s technical information library by calling (800) 922-8911. You must provide a return fax number to use this service. EPSON Referral Service For the location of your nearest Authorized EPSON Reseller or Customer Care Center, call (800) 922-8911.
Glossary bit Short for binary digit. The smallest unit of data in computer processing. A bit can represent two values, on and off, or 1 and 0. bit/pixel The unit that indicates the number of bits allocated for a pixel. The larger the value, the more detail a pixel can represent. color correction A method of adjusting the color image data for a particular type of device so that the reproduction results come close to the original colors.
pixel resolution Indication of how finely an image is resolved into pixels. Measured in dots per inch (dpi), pixels per inch (ppi), or samples per inch (spi). scan An operation performed by the sensor and the carriage of a scanner. The sensor “reads” the colors in an image, and sends the color information to the computer as digital data. Threshold Glossary Short for picture element. Every image is composed of a number of pixels. Pixels are also counted in units of dots.
Index A E Automatic preview, 19 EPSON Accessories, 58 help, 57 to 58 B Basic scanning, 11 C Calibration problems, 47, 53 utility, 43 to 45 Color correction options, 53 Color Management settings, 16 ColorSync, 8, 53 H Help, 57 to 58 I Image Color Matching (ICM), 53 Image problems, 52 to 54 Image size, adjusting, 54 Image Type setting, 15 D M De-screening, 16 Destination setting, 17 problems, 49 Destinations for Start button, 27 to 33 Document position problems, 52 Manual preview, 19 Manual, how to
Monitor calibrating, 43 to 45, 47, 53 Macintosh, 8 Windows, 7 Monitoring utilities, 6, 23 to 25, 42, 50 to 51 O One-touch scanning, see Start button Output device problems, 49 Output type, 17 P Placing a document, 37 Presto! PageManager adding destinations, 29 to 31 assigning destinations, 28 problems using, 51 reassigning destinations, 32 to 33 scan button settings, 33 to 35 Start button scanning, 36 to 40 Start button setup, 27 to 35 Previewing images, 19 to 21 Index Problems printing, 54 using Start
Software installation problems, 47, 54 Source settings, 12, 54 sRGB, 53 Start button enabling scanner monitoring, 23 to 25 preparing to use, 22 to 35 problems, 50 to 51 scanning with, 36 to 40 setting up PageManager, 27 to 35 Support, 57 to 58 System requirements Macintosh, 8 Windows, 7 U Unsharp Mask, 16 USB, 7, 8 Utilities, 6, 41 to 45 T Threshold setting, 17 Troubleshooting, 46 to 58 TWAIN previewing, 19 to 21 problems, 47 to 49 settings, 15 to 18 starting, 12 to 14 suppressing interface with Start but
