User manual AVISION FT-0807H

[. . . ] Sheet-fed Duplex Scanner User's Manual Regulatory model: FT-0807H 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. [. . . ] Bi-tonal images are normally compressed using CCITT standard called Group 4 (G4). Color and grayscale images are often compressed using JPEG technology. Move the JPEG Quality slider to the right or left to increase or decrease the level of compression. If your image editing application does not support the type of compression format, then either a warning message will appear or the image quality of the compressed file will not be acceptable. This group developed and lent their name to a file compression standard for color and grayscale images that is widely used by scanners, and software applications. 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 4-18 User's Manual The Compression tab dialog box 4-19 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 4-20 User's Manual 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. Background Level Example, slightly adjusting the background value makes your text more clear. Original 4-21 Remove Blue, Threshold: 20, Background: 255 Remove Blue, Threshold: 20, Background Level: 210 4-22 User's Manual 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 4-23 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 4-24 User's Manual 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. [. . . ] Rotate the roller forward with your finger and repeat the cleaning steps above until the entire roller is cleaned. Your scanner is now ready to use. 3) 4) ADF Release Button Front Cover 7-1 ADF Roller ADF Pad ADF Roller 7-2 User's Manual 7. 2 Cleaning the Calibration Area 1. (95%) Wipe the glass and the white area as illustrated in below from side to side to rid the dust or dirt. Calibration Area Glass 7-3 7. 3 Replacing the Snap-in Pad Module After scanning approximately 100, 000 pages through the ADF, the pad may be worn out and you may experience problems with document feeding. In this case, it is highly recommended to replace the pad module with a new one. [. . . ]