User manual MICROTEK VANTAS 3000

[. . . ] · The Installation shows you how to connect the scanner to your PC and install the software. · The next chapters, Start scanning, provide step by step instructions for scanning photos and documents. · The Appendices provide a Troubleshooting section and a summary of the scanner characteristics. If you have a problem, we recommend you look at the section first before contacting technical support. [. . . ] Choose this option based on what the original is - color or black & white - and what you want to use the scan for: color display, black & white printing, OCR, etc. Your choice also influences the file size: true-color being the largest, grayscale the next and black & white the smallest. When you change this option, look at the projected file size in the message bar: true-color images are three times larger than grayscale and twenty-four times larger than black & white!True-color This scan mode collects the maximum amount of color information from the original, up to around 16. 7 million colors!Choose this option for a color original that you want to display, print or edit in color. Grayscale Use this mode for black & white photos or scanning color material to print on a black & white printer. Line-art Use this mode to scan text or line drawings - a picture containing no colors or shades of gray, but black lines only. Resolution Resolution determines the amount of detail collected from an original. The higher the resolution, the more detail. Select a value based on what you want to use the scan for. In general, we recommend you keep the resolution as low as possible because the higher the resolution, the slower your scan and the larger the resulting file size. A lower resolution (100-200dpi) can capture more color and detailed information than most printers and displays can show. When you adjust the resolution, keep an eye on the projected file size in the message bar. Try the following: 100dpi For images to display on screen at about the same size as the original in a presentation or on your web page. Also use this for larger images that you will reduce in size to include in a report or presentation and print out on a normal color or black & white printer (with a print resolution of 300~360dpi). 200dpi For small images to display at a larger size on screen, or for any size to print out at original size on a color or black & white printer (up to 720dpi print resolution). Also use 200dpi (with black & white scan mode) to OCR clear text (over 10pt); for small text, use 300dpi. 11 300dpi When quality is critical and a lower resolution is inadequate, choose 300dpi for any size image, for any use (to determine if the resolution is too low, look for squares in the image, see below). Also use 300dpi (with black & white scan mode) for the best OCR result. Over 300dpi Unless you have a specific reason for selecting a higher resolution, we suggest you do not because the resulting file size may be very large and take up a lot of your hard disk space. For example a 3" x 5" photograph scanned at 2400dpi, true-color will be over 240MB. 72dpi 100dpi 200dpi 300dpi 200dpi (enlarged 2x) 200dpi (enlarged 3x) 200dpi (enlarged 4x) 200dpi (enlarged 8x) 300dpi (enlarged 2x) 300dpi (enlarged 3x) 300dpi (enlarged 4x) 300dpi (enlarged 8x) Note: When scanning a photograph that will result in a file size larger than 25MB, there will be a warning screen giving you the option to cancel or continue. Auto Crop The auto crop function is disabled by default. To scan with the auto crop function, simply enable Auto Crop in the settings tray. Descreen Mode When this function is enabled, your scanned image passes through a descreen filter which removes the effects of pixel interference to give the image a smoother appearance. We recommend that you use this function when scanning printed material or reproductions of pictures such as photos from books, brochures and magazines. The descreen function is disabled by default. If you choose to scan with the descreen function, simply enable Descreen Mode in the settings tray. 12 Size You can adjust scan size in preview window, enter a width and length in the size entry boxes or select a fixed size from the list box. [. . . ] The scanned image is too light or too dark. Check if the Scan Window is clean. Adjust the brightness or color gamma settings and try again. B. Mesh patterns appear on the scanned image. The original image is commercially printed. Try reducing the resolution by a small amount, for example from 200dpi to 190dpi; keep reducing until the patterns disappear. C. [. . . ]