Working Principle Of Laser Printer

Due to the continuous development of laser printers technology, the price of laser printers has become more reasonable, and has gradually got rid of its "noble status", and has begun to popularize in the office area and enter the family.

Laser printer is the fastest growing machine in recent years.

Laser printer is an output device that combines laser scanning technology with electronic Phototypesetting Technology. Its basic working principle is that the data information provided by computer is converted to video signal by video control, and then the video signal is converted to laser driving signal by video interface / control system. 2-1.

When the modulated laser beam is scanned along the axial direction of the photoreceptor drum, according to the principle of dot matrix composition, the drum surface is sensitized to form a negative (positive) charge character latent image. When the drum surface passes through a positive (negative) charged toner, the exposed part is adsorbed toner, and then the toner is pferred to the paper, and the toner on the paper is thermally melted to form permanent characters or graphics.

The printing process is (photosensitive drum) electrified - (photosensitive drum) charging - developing (imaging) - pfer - fixing - eliminating the residual image.