Electrophotographic copying machine.

摘要

An electrophotographic copying machine which forms an electrostatic latent image on a photoconductive means by charging the image forming surface of the photoconductive means by a charger and scanning the charged image forming surface of the photoconductive means by an exposure unit, develops the electrostatic latent image by a developing unit, and transfers the developed image from the photoconductive means to a recording sheet by a transfer unit. The electrophotographic copying machine is provided with a holding means capable of holding an exposure unit of either of different systems. Thus, the electrophotographic copying machine can be constructed in a desired model by incorporating an exposure unit of a desired system without changing most of the component parts.