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Image scanner
An image scanner is a device that optically scans images, printed text, handwriting, or an object, and converts it to a digital image. Modern scanners typically use a charge-coupled device (CCD) or a Contact Image Sensor (CIS) as the image sensor, whereas older drum scanners use a photomultiplier tube as the image sensor. A rotary scanner, used for high-speed document scanning, is another type of drum scanner, using a CCD array instead of a photomultiplier. Other types of scanners are planetary scanners, which take photographs of books and documents, and 3D scanners, for producing three-dimensional models of objects.
- Part of Speech: noun
- Synonym(s):
- Blossary:
- Industry/Domain: Office equipment
- Category: Scanners
- Company:
- Product:
- Acronym-Abbreviation:
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