RECORDER USING PHOTOCONDUCTIVE TONER

摘要

PURPOSE:To make it possible to obtain uniform spraying and good image by forming a magnetic brush by a sprayer and using an endless base body electrode and a counter electrode. CONSTITUTION:A sleeve which has magnets 6 rotating in an arrow direction is provided in a sprayer provided to the outside peripheral of a base body electrode 1. The photoconductive toner A supplied to the sprayer 3 is agitated in the sprayer 3 to form a magnetic brush on the magnets 6. The brush shows napping toward the electrode 1 as the napping height (conveying rate) is controlled by a napping cutting part 7. The photoconductive toner A near the top end of the napped carrier scatters onto the electrode 1 electrified-by the high-voltage potential impressed thereto so that the uniform photoconductive layer is formed. An exposing part 10 applies a light source to, for example, the positive original on an original platen and performs image exposing by the light reflected therefrom. The toner in the part corresponding to the dark part of the original where light is not transmitted is held electrified to the + polarity and the toner electrified to the + polarity is scattered onto the electrode 2 which is impressed with -. The toner A failing to scatter onto the electrode 2 is moved onto the electrode 1 from which the toner is returned into the sprayer 3 and is reused.