Light scan timing controller for colour laser printers

摘要

The controller is used in colour laser printers where the scan controller controls the timing of the laser scanners. A number of light scan sections produce a latent image on a photographic leader which is exposed by laser scans. A timing controller generates timing signals from a single clock line supplied by a master oscillator and distributes the timing signal to end of the laser scanning sections. The controller contains a counter and logic circuitry to distributer a lower rate clock derived from the master oscillator.