Double laser melting 3D printing machine

Different laser printers have different printing functions, but their working principles are basically the same. They all go through seven processes: charging, exposure, development, transfer printing, power elimination, cleaning, and fixing, five of which are around the photoreceptor drum. When the text or image to be printed is input into the computer, it is preprocessed by computer software. Then, the printer driver is converted into a print command (printer language) that can be recognized by the printer and sent to the high-frequency drive circuit to control the opening and closing of the laser transmitter to form a dot matrix laser beam. Then, the sensitive drum in the electronic imaging system is axially scanned and exposed through the scanning rotating mirror. The longitudinal scanning is realized by the rotation of the sensitive drum itself.

The laser printer is composed of laser, acousto-optic modulator, high-frequency drive, scanner, synchronizer, optical deflector, etc. Its function is to modulate the binary dot matrix information sent by the interface circuit on the laser beam, and then scan it on the photoreceptor. The photosensitive body and the photographic mechanism constitute an electronic photographic transfer system, which transfers the image of pictures and texts on the photosensitive drum to the printing paper. The principle is the same as that of the copier. Laser printer is a non impact output device that combines laser scanning technology with electronic imaging technology.