Scanners vary in terms of the image size they can scan, but a flat-bed allows full-size pages to be scanned. The fundamental concept of scanning a beam to create an image has been around for decades.
The cathode ray tube (CRT), which scans an electron beam onto a phosphor screen to create a display, is the best example of this concept.
On the simplest level, a scanner is a device that coverts light into 0s and 1s. That is canners convert analog data into digital data.
All scanners work in the same principle of reflectance or transmission. The image is placed before the carriage which consists of a light source and sensor. In the case of a digital camera, the light source could be the sun or artificial lighting.
In retinal scanning display (RSD) technology, displayed image is scanned in a raster format onto the viewer’s retina using-power red, green and blue light sources, such as lasers, laser diodes or light-emitting diodes (LEDs).
Scanners come with some software to use them. The software program will have a color saturation option by which the color intensifies can be varied.
Technology of scanning
