Electrophotographic printer

An electrophotographic printer, comprising: a photosensitive drum (21) which has an outer circumference longer than a whole length of a recording paper (7) and which can be rotated selectively forward and backword and at a variable speed; an LED head (20) for exposing a surface of the photosensitive drum (21) to light so as to write a latent image at every scanning line; a motor control circuit for stopping the photosensitive drum (21) at a position of the LED head corresponding to a scanning line. as to an input picture signal and a developer (19) which is separated from the surface of thephotosensitive drum (21) when the latent image is written and which abuts to the surface of the photosensitive drum (21) when a toner is adhered to the written latent image to develop.