Patent ID: 6344644
Filing Date: 2002-02-05
Classification: B41J,H04N

Abstract:
An optical scanning device, comprising:a light source for emitting a light beam; a scanning system which deflects the beam emitted by said light source to scan; a light receiving unit having a plurality of light receiving elements arranged in a direction in which the scanning beams scans, a light receiving signal being output by each of said light receiving element upon incident of the scanning beam, said plurality of light receiving elements being divided into two groups such that every other light receiving element is fallen in the same group and adjoining light receiving elements are fallen in different groups; a resonance amplifying system that amplifies the light receiving signals of the light receiving elements of the two groups, respectively; a clock signal generating unit that generates a clock signal in accordance with the resonance amplified signals; a delay signal generating unit that generates a delay signal for generating a synchronizing signal in accordance with the light receiving signals output by at least part of said plurality of light receiving elements; and a logic circuit which generates the synchronizing signal based on the clock signal output by said clock signal generating unit and said delay signal output by said delay signal generating unit.