Components and How The Scanner

Scanner components

The components in question are the components on the scanner flatbed. Components are:

1. Alas glass. Glass mat is used as the container of the image to be read.
2. Light Source. A light source lamp with high intensity light will produce light that is directed into the picture.
3. Sinal reflectance sensor. The type commonly used for this type of flat bed scanner is a CCD sensor (charge-coupled devices). This tool works like an eye that will read the light reflected from the image To drive up to the CCD, the light reflectance of the image is directed by mirrors and lenses to use a scanner.
4. Stepper motor and jagged ribbons. Because the data is read perbaris line, then the stepper motor is required and ridged band to move the lamp and CCD.
5. Cover. Cover is used to avoid external light coming in, so the data is read by the CCD actually the reflection of the image data being read.

In addition to these components there are certainly many other components, but the function and form can vary from one type of scanner and other woods.

How it Works Scanner

1. Images to be scanned is placed on the scanner glass surface
2. Before the image is scanned, the computer will determine how far the stepper motor to bring the lights will go forward, the distance is determined by the length of the image and position the image on the scanner glass.
3. The lights begin to flicker and the stepper motor will start rotating to move the lamp until the final position of the image.
4. Light emitted light to the image will be reflected, then the resulting reflections will be read by a scanner mirror toward the lens.
5. The reflected light will eventually get to the CCD sensor
6. CCD sensors will measure the light intensity of the reflected wavelength dn and turn it into an analog voltage.
7. The analog voltage is converted into a digital value by ADC converters (Analog to Digital)
8. Digital signal from the CCD sensor is sent to the logical board and sent back to the computer in the form of digital data that show the colors at the points of the reflected image.