User manual AVISION AV100III

[. . . ] * Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. CAUTION: Any changes or modifications not expressly approved by the manufacture of this device could void the user's authority to operate the equipment. iv Table of Contents 1. SCANNER INSTALLATION 2. 1 INSTALLATION OF THE SCANNER 2. 2 CONNECTING THE CABLE 3. SCANNER DRIVER INSTALLATION 3. 1 AUTO-INSTALLATION PROGRAM 3. 2 AN EXAMPLE OF CONFIG. SYS 3. 3 UNINSTALL THE SCANNER DRIVER 4. [. . . ] In that case, you will need to select Avision Sheetfed as the source again before you can resume your use of AV100III color image scanner. Do Calibration: Place a sheet of white, A4-size paper on the ADF and press the Calibration button to do calibration. Also, It is suggested you do it after the scanner has been powered on for 2 minutes, so that the lamp may have enough time to warm up. Or you should 4-1 do this whenever the scanned image seems to be too dark. The TWAIN user interface: 4-2 4. 1 Image Type You can select the Type menu for the mode you want to use with your document or image. Line art Line art includes only black and white areas. Halftone Halftone simulates different shades of gray by varying the threshold value of a matrix. Error Diffusion While taking up but a minimum storage space, error diffusion gives good image texture and excellent image details. Gray (256 levels gray scale) Scanner recognizes each point in the image as a shade of gray (continuous tone). True Color (16. 7 million colors) Color image have continuous tones along with its color hues. 4-3 Note: For best OCR and article print-out effect, we recommend the scanning parameters to be that of 300 dpi, black and white mode. To scan pictures or photos, the color or gray scale mode is necessary But then, these modes invariably take up much more disk space. An A4-size color image scanned at 300 dpi, for instance, takes up as much as 24MB of disk storage space. To save disk space, then, we suggest you set the scanning resolution at 100 dpi for those images intended for screen display use only, now that a scanning resolution of 100 dpi can do quite all right for the said purpose. 4. 2 Resolution Control Resolution: The number of dpi (dots per inch) that AV100III uses for a scan. 4-4 4. 3 Image Control Brightness: Adjusts the lightness or darkness of an image. Contrast: Adjusts the range between the darkest and the lightest shades in the image. Adjusts the midtone of the image without losing details of the lightest and the darkest areas. Used along with the five functions above, this function enables you to select RGB for Red, Green, or Blue filter to display the color image the way you desire. Gamma: Highlight: Shadow: Channel: Brightness Shadow Gamma Highlight Shadow Color Filter: You can select None, Red, Green or Blue filter for color drop out purpose when in line art / halftone / error diffusion / gray mode. In this case, then, you can select RGB for the Red filter to drop out the background color and facilitate the reading. 4-5 Invert: The invert command reverses the brightness and the color in the image. For color images, each pixel will be changed into its complementary color at the command of Invert. Color Match: Adjusts the color quality of the image so that it comes close to that of the original. This function uses default parameters to adjust the image. Filter: Gives you special effects on the image. You can select the Filter function from the menu bar. Descreen: Eliminates moire patterns commonly found in printed matter. (95%). 2) Open the scanner front door and wipe the upper feeding roller by moving the swab from side to side. Rotate the roller forward with your finger and repeat the cleaning steps above until the entire roller is cleaned. 4) Wipe where the window glass is contaminated, which is manifested by the constant appearance of a vertical line on some specific part of the scanned image. [. . . ] Telephone number :886-3-5782388 Fax number :886-3-5777017 BBS :886-3-5786149 CompuServe :101400, 444 Email :service@avision. com. tw 6-6 Note: 1. You will be asked to enter your first name, last name and password at all times. For first-time user, you will be requested of your full name and password. The same name and same password are required to enter BBS again next time. 6-7 7. [. . . ]