User manual AVISION AV626C

[. . . ] If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: * Reorient or relocate the receiving antenna. * 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. INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 2. [. . . ] Press the Start button, choose RUN, type d:\driver\AV626C. exe (d: the CD-ROM drive in use), and then click O. K. Follow the on-screen instructions to complete the installation. Fig. 3. 2 3-2 3. 2 UNINSTALL THE SCANNER You can uninstall the scanner by selecting Start>Programs>Avision AV626C and double clicking on the Uninstall command from the scanner . 3-3 4. SCANNER OPERATION & DOCUMENT PRINTING Scanning Images from within an Application (TWAIN) 1. If the Select Source menu options are not available from the File menu, see the user guide of your application to learn how the TWAIN link is used. A dialog box appears containing the different TWAIN sources that you can choose from to bring an image into your application. When you have used the dialog box to select a different source, you will need to select AV626C as the source again before you can reuse the Button scanner. 7. 4-1 The TWAIN user interface: 4-2 4. 1 IMAGE TYPE The Button scanner provides five image types as explain in below: Line art Error Diffusion Scanning Source Halftone Gray Color Scanning Source Two scanning sources are provided- flatbed as well as transparency. Line art Line art presents the image in black and white only and there are no intermediate shades of gray in between. Halftone In addition to the black and white display, Halftone can present a somehow gray shade of image by using different size of dots. Error Diffusion While taking up but a minimum storage space, error diffusion gives good image texture and excellent image details. 4-3 Gray (256 levels gray scale) Gray presents a 256 shades of gray in an image. Color (Internal one billion colors) The 36 bits True Color presents 16. 7 million color(output) and give much more tonal range and details in a color image. 4-4 4. 2 SCANNING PARAMETERS & IMAGE CONTROL Resolution Brightness Contrast Resolution: The number of dpi (dots per inch) that the scanner uses for a scan. Yet up to a certain level, the resolution will not be visually increased but the disk space will be increased. Contrast: Adjusts the range between the darkest and the lightest shades in the image. The higher the contrast, the bigger the different gray scales. 4-5 Auto Level Auto Area Color Descreen Matching Reset Invert Calibration Quality Mode Speed Mode Pixel/Inch/Cm Set Gamma Image Information Auto Level: Optimizes the scanned image. Auto Area: Automatically sets the whole document as the scan area, no matter what its size. Descreen: Eliminates the Moire patterns commonly found in printed matter. Before descreen 4-6 After descreen Color Matching: Adjusts the color quality of the image to make it close to the original. 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. Calibration: Defines Brightness for the scanner. Users are recommended to calibrate the light source if the scanned image looks undesirable or comes out to be too dark. Quality/Speed Mode: Users can select the mode to perform scanning according to their own need. Select quality mode scanning if your emphasis is on the quality of the scanned image. Or you can select speed mode scanning if you want to speed up the scanning process. [. . . ] Answer: Disable the Auto Scan function in the application, then your printer will function in normal working condition. 7-3 Question: Why some parallel port devices and software's keypro do not work with the button scanner?Answer: The scanner do pass-through printing all right , but the pass-through printing may not work if you connect the parallel port with devices other than printer. Therefore, if you would like to connect some parallel port devices other than printer, please do not connect them to the same parallel port that the scanner currently uses. It is suggested to use other parallel ports to connect these devices or keypro. [. . . ]