Susumu Imakawa

Optical recording apparatus capable of controlling optical power of laser diode array

Synchronizing signal generating system for laser scanner

Multi-beam light source device and optical scanning apparatus using the multi-beam source device

Color image forming apparatus having means for properly superimposing image colors on each other

Beam recorder forming low density dots

Focusing error detection apparatus using a first and second knife edge at different positions

Method of controlling the temperature of semiconductor laser in an optical device

Uniform intensity per pixel when the linear speed of a laser beam varies along a scanline

Optical scanning apparatus wherein image scanning clock signal frequency is corrected to render scanning speed constant

Scanning clock generating device for optical scanner