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  • Scanners designed to obtain digital information from a paper document appropriate for direct printing and/or to be stored for further processing in a computer or computerized system. These scanners typically consist of an electronic unit that includes a scan head (typically including mirrors, lens, filters and a CCD array) with focusing capabilities that moves along the document which information is being retrieved, light sources, and software that may allow image correction and enhancement, color reconstruction, grain equalization, and other image quality improvements. Flat bed scanners are intended to obtain digital information from documents, books, including text, images, or both for further printing, storing, processing, and/or transmission through a hospital information system; document scanners are frequently used as personal computer peripherals. Sheet bed scanners are similar to flatbed scanners except that the document is moved and the scan head is immobile.
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