Computer Aided Design Scanners

Computer Aided Design (CAD) scanners are the computing devices which develop the digital image file type of the design, developed and manufactured from the CAD system. A typical photocopier technology has been used in the CAD scanner mechanism. The scanning can be done in two ways. The smaller type scanners can be passed over the document surface by hand. The larger scanners use the flat-bed mechanism in which the document is placed over the bed and scanned.

There are different types of scanners available that depend on their dots per inch (dpi). The major types of scanners are flatbed scanners, film scanners and slide scanners. The other types are large format scanners, larger format engineering scanners, wide format scanners, wide format GIS scanners, and map scanners. CAD scanners are used mainly for modeling drawing purposes. 2D CAD scanner is best used for this purpose.

Flatbed scanners are the most commonly used intrinsic type scanner. Flatbed scanners place the documents over the flatbed for the scanning purpose. These scanners are reasonably priced, ranging around $150 for a good quality scanner or $400 for an excellent one. The drawing resolutions of these scanners are excellent and the quality is highly reliable. Film scanners can scan a resolution of 4,000 dpi with 42-bit color depth, which is normally used to scan photographic films.

A large format scanner enables you to perform all large documents in business. The options of special scan and the copy mode allow you to capture the drawing with variety in colors, sepia and blueprint, and faded black-white drawings. The enhancement control and the clean-up options are additional choices in the large format scanners. Wide format scanners offer you the digital capturing of the documents, drawings and other input text which enables you to view, edit, and archive the file to perform various other output applications.

There is a wide range of CAD scanners to choose from. The factors to be observed before buying a CAD scanner include the purpose of the scanner, the technical specifications that suit your needs, resolution, color depth, the type of scanning element used, document size, and the interface type. The other factors which have to be noted are the scanner software (which comes with the scanner device), compatibility, and product support.



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