Scanner is an input device by which we can take input from text or photos. There are various types of scanners we use today.
When we scan a document, the scanner first converts the document to digital signal and then take input as digital signals. We can use connect it with our computer via ports using USB cable.
Types of scanner
We can categorize scanner based on the technology they use or structure. Here in this article, we will discus the types of scanner based on their structure. So, lets see some types of scanner.
- Flatbed scanner
- Photo scanner
- Document scanner
- Portable scanner
- Film scanner
- Roller scanner
- Embedded scanner
Flatbed scanners are most common types of scanner we use in the home and business organizations. Flatbed scanner is ideal for text, documents and photographs.
Flatbed scanners have a cover which can be lift up to scan various documents which has a flat scanning surface. You can also scan transparent slides or film negatives using flatbed scanners.
Photo scanner gives a quality scanning when we need scanning images, pictures or a large number of photographs. Other scanner also can do that, but photo scanner gives the better result of color depth.
Photo scanner is more expensive than others and some offers the image editing software which help us to clear old photographs.
Document scanners are used for especially scanning multiple documents. Unlike flatbed scanner here documents are placed in a feeder and for this this is also called sheetfed scanner.
Document scanner needs a limited space and you can configure its speed and efficiency because it has some advanced features. Document scanners are expensive than flatbed scanners.
Portable scanners are very small in size and often can fit to your pocket. It works with your handheld device and need not more power to run. It can be connected through USB port. These scanners is not good enough for scanning photos or multimedia.
Film scanners works by a beam of light which is also called slide scanners. Film scanners have different price and quality. They work with CCD sensors.
Roller scanner can be portable batteries and storage devices. Roller scanners have a flat sheet between rotating rollers which can used for scanning up to a specified width. We can use USB to transfer stored scan copies to computer.
Embedded scanners can be embedded inside the keyboard. For this we need not more space to place it.