| 摘要 |
PURPOSE: To easily and surely remove refuse such as dust and toner on a photosenstive surface by providing a dust removing brush cleaning a photosensitive material on a relative advancing direction side with respect to a light source part, in a movable optical system. CONSTITUTION: In the electrophotographic printer of a type so as to relatively translate the photosensitive material and an optical system such as a CTS plotter for the purpose of the output of the block copy film of a newspaper surface, an unexposed silver salt photographic system recording photosensitive material is attracted to the inside surface of a semicylindrical drum 3 at the time of exposing. A laser diode(LD) light source part provided in the movable optical system 2 parallelly moved on the semicylindrical drum 3 vertically irradiates the photosensitive material with LD beams, while being rotated in a circumferential direction, so that an image is formed on the photosensitive material. At this time, the dust removing brush 1 formed by attaching a conductive destaticization brush to the tip of a semicircular metallic disk smaller than the diameter of the inside surface of the drum 3 by about 10mm is fixed on the top end in the moving direction of the movable optical system 2, to remove the dust (refuse) 4 on the photoreceptor surface at the time of exposing. |
