Types of Scanner
There are several types of Scanner that are mentioned below.
Drum Scanner
The drum scanner rotates scanned page around a drum for faster scanning. It scans with a photomultiplier tube rather than a charge-coupled device which is used in flatbed scanners. The drum scanners use photomultiplier tubes which are excessively sensitive to light. The image is mounted on the glass tube available in the scanner and when the scanning start the light is moved on top of the image while the photomultiplier tubes (PMT) pick up its reflection and process it. Drum scanners are generally known for their high resolution.
What is Scanner?
A scanner is an electrical device can read and translate text, images, and other materials into a digital signal. This transforms the documents into a format that computer software programs can use to view and/or edit them. There are many different types of scanners with various resolutions on the market.
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