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Know the Use of CCD Technology in Barcode Scanners

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Posted by Adrian Fisher on January 28, 2011 at 3:47 am

Barcodes are referred as optical machine-readable representation of data which are showed on certain products. Barcode scanner is a device which reads barcodes by various technologies. CCD scanners, laser scanners, image scanners are various types of barcode readers that use different technologies. Symbol scanners, HP scanners, and others include scanners utilizing these technologies. Let us now know about the application of CCD technology in scanners.

CCD in CCD scanners stands for Charge Coupled Device. The technology found in video cameras is used by these scanners. The reflections are scanned as single and complete image by them. An array of small light sensors are present in CCD scanners. They are pointed at the barcode of the product. A sort of grid of tiny laser like lights is formed on the surface of the barcode part of the product. Barcodes are generally printed on a white background. So the light which is emitted from the scanner gets reflected to the receiver of scanner. Translation of light into voltage is done by a photovoltaic cell. This corresponds to the single type of product. The information from the scanner is sent to a computer where information is stored in a database.

CCD scanners are cost-effective and can be used for ideal light barcode scanning applications. These scanners rarely have moving parts and hence are more reliable for use. They are also less prone to failure. Symbol barcode scanner, WASP barcode scanner and others which use CCD technology are more expensive than laser scanners. Modes of connectivity of these scanners include cordless, fixed-position, and tethered.

CCD scanners can read barcodes kept up to a distance of 30cm. They can be used at various industries which include heavy-duty usage. CCD scanners have high accuracy. Data from the barcodes which are slightly damaged or wrinkled can also be read by them.

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