In computing, an image scanner—often abbreviated to just scanner, although the term is ambiguous out of context (barcode scanner, CAT scanner, etc.)— is a device that optically scans images, printed text, handwriting, or an object, and converts it to a digital image. Common examples found in offices are variations of the desktop (or flatbed) scanner where the document is placed on a glass window for scanning. Hand-held scanners, where the device is moved by hand, were briefly popular but are now less common due to the difficulty of obtaining a high-quality image. Mechanically driven scanners that move the document are typically used for large-format documents, where a flatbed design would be impractical.
Scanners and spanking art
Scanners can be used to digitize any image, including drawings, illustrations, paintings and photographs. They play an important role in the digitization of analog visual spanking media. Generally, a scanner can generate superior image quality and detail compared to a digital photograph of the same medium.
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