User manual AVISION AV8050U

[. . . ] A3 High-Speed Document Scanner User's Manual Regulatory model: DT-0603H Avision Inc. Trademarks Microsoft is a U. S. IBM, PC, AT, XT are registered trademarks of International Business Machines Corp. Other brands and product names herein are trademarks or registered trademarks of their respective holders. No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical, manual, or otherwise, without the prior written permission of Avision Inc. [. . . ] On Microsoft Windows-based systems, a file with the extension . jpg has normally been compressed using this standard. For scanning color or gray images, the following compressions are available: None JPEG For scanning B&W images, the following compressions are available: None G4 36 The Compression tab dialog box 37 4. 4 THE COLOR DROPOUT TAB 4. 4. 1 COLOR DROPOUT SELECTION Color Dropout tab allows you to drop either of the red, blue, or green color in your scanned image. If your image contains red color watermark or background, choose the R (Red) channel then any red watermark or background will be removed. This feature is used to sharpen your text when using OCR (Optical Character Recognition) software. Note that this function supports only black & white and gray images. Therefore, be sure to choose any black & white or gray image type while applying this function. The Color Dropout dialog box 38 4. 4. 2 OTHER COLOR DROPOUT OPTIONS Advanced Processing provides two options that can adjust your scanned image in the best optimal result. Filter Threshold This value is used to determine the color which will be dropped out. A lower value will drop more of the selected color out, while a higher value will leave more of the selected color in. The pixel which is higher than the background value will be adjusted to the lightest point. Adjust the value for both the Filter Threshold and Background Level to produce the best optimal result. Backgroun d Level Example, slightly adjusting the background value makes your text more clear. Original 39 Remove Blue, Threshold: 20, Background: 255 Remove Blue, Threshold: 20, Background Level: 210 40 4. 5 THE PAPER TAB The Paper tab allows you to define values relating to image output (i. e. , Auto Crop or not, Scan Area, OverScan, Multi-Feed Detection). The Paper tab dialog box 41 4. 5. 1 CROPPING Cropping allows you to capture a portion of the document being scanned. Options Automatic Description Automatic adjusts the cropping window according to different document sizes. If you select this option, you can use the arrow keys to define the x and y offset values, width and length to redefine your scanned area. The Display window will show image placement as you change the values. If you select this option, you can use the arrow keys to define the x and y offset values, width and length to redefine your scanned area. The Display window will show image placement as you change the values. Fixed to Transport EOP (End of Page) Detection 42 The following options are only available when Fixed to Transport is selected. X-Offset -- the distance from the left end of the scanner to the left edge of the scanning area. Y-Offset -- the position from the top end of the document to the top end of the scanning area. Center: automatically calculates the x-offset for centerfed feeding based upon document size selected. -- relocate the scan area by click the arrow key on the cross sign while retain the scan size. View the result from the Display window. 43 Example Redefine your scan area ( x-offset: 2. 25 inchesyoffset:1. 13 inches) Scan Area Display window Original After Fixed to Transport The Redefined Scan Area 44 4. 5. 2 Deskew OTHER PAPER SELECTION Use this option to automatically deskew a document. Note: If the skew angle is too great, some of the image may be cut off. Scan Area Choose your desired paper size with the drop-down list box. Or you may select a custom paper size by clicking the Scan Area box and then click Add to include in the choice. Choice: None, US Letter- 8. 5"x 11", US Legal ­ 8. 5" x 14", ISO A4 ­ 21 x 29. 7 cm, ISO A5 ­ 14. 8 x 21 cm, ISO A6 ­ 10. 5 x 14. 8cm, ISO A7 ­ 7. 4 x 10/5 cm, ISO B5 ­ 17. 6 x 25 cm, ISO B6 ­ 12. 5 x 17. 6 cm, ISO B7 ­ 8. 8 x 12. 5 cm, JIS B5 ­ 18. 2 x 25. 7 cm, JIS B6 ­ 12. 8 x 18. 2 cm, JIS B7 ­ 9. 1 x 12. 8 cm, Scanner Maximum, Long Page. [. . . ] From time to time the pad assembly and feeding rollers may become contaminated with ink, toner particles or paper dust. In this case the scanner may not feed documents smoothly or several documents may feed at once. If this occurs please follow the cleaning procedures to return your scanner to its original state. (Cleaner kits are available from PictureVision. ) Carefully open the ADF to the left. [. . . ]