KINDS OF SCANNER

FLAT BED SCANNERS

They have a flat bed against which the printed information or graphics are placed, which is then encoded and sent to the computer the information is displayed on the monitor. Example: NADRA uses such type of scanners etc.

HAND HELD SCANNERS

These are moved in the document to be scanned and they encoded data into digitized form. These can scan a book without breaking it.

Example: These are used to read data on price tags, shopping labels and inventory part numbers etc.

SHEET FED SCANNERS

These scanners use motor driven rollers to pull the documents or data sheets to be scanned through these devices.

SLIDE SCANNERS

These scanners use motor driven film holder that can pull a slide, film strip etc.

Example: These are mostly used in film industry etc.

PHOT SCANNERS

These are used to scan only the photos or film strips.

Example: These are mostly used in photo studios etc.

DRUM SCANNERS

In these scanners the media or data sheets to be scanned are attached to a rotating drum,

which rotates at speed of several thousands of rounds per minute.