Laser/scanner system The laser/scanner system forms the latent electrostatic image on the photosensitive drums according to the VIDEO signals sent from the formatter. The product has two laser/scanners: one for yellow and magenta and the other for cyan and black. The main components of the laser/scanner system are the laser unit and the scanner motor unit, which are controlled by the signals sent from the DC controller.
Figure 1-8 Laser/scanner system 18 Chapter 1 Theory of operation ENWW Photosensitive drum (Y) Photosensitive drum (M) BD sensor Yellow laser Magenta laser Laser unit signal Protective glass MOTOR CONTROL signal signal Scanner motor unit Scanner mirror signal SCANNER CONTROL VIDEO LASER BDI DC controller Formatter