The reason why scanning is more expensive than printing and copying is that the cost of scanning equipment is relatively high, and the lamp tube in the scanner has a short life, but the price is very high.

Scanning, printing and copying are described as follows:

1, scanning refers to displaying pictures or graphics on the screen through the left and right movement of electron beams, radio waves, etc. Scanners are usually used for external instruments and equipment of computers to capture images and convert them into digital input devices that computers can display, edit, store and output.

2. Printing usually refers to outputting visible data such as words or pictures from computers or other electronic devices to records such as paper through a printer. Generally speaking, the graphic accuracy and positioning accuracy of printing are higher than that of copying, and there are many operation steps and more software and hardware used, so the price is slightly higher than that of copying;

3. Copying refers to reprinting, which is the general term for the types of original copy printing. Because the first copy was reprinted with a copier and came from copying. With the progress of modern science and technology, the ways of copying are more and more extensive. Copying no longer refers to reprinting with a copier, but extends to the general name of copying and printing types of originals.