Image forming apparatus with improved laser transmitting optical system

摘要

An image forming apparatus having a quantum-well semiconductor laser as a light source, a photosensitive member and an optical system for transmitting a laser beam emitted from said quantum-well semiconductor laser to the photosensitive member. The optical system has a reduced transmittance to suppress variations in the laser beam intensity within an allowable range. The transmittance of the optical system is adjusted by providing a reflecting coating on the beam emitting surface of the quantum-well semiconductor laser.