| 摘要 |
PURPOSE:To realize stable development without any change in the lapse of time in ability in development by using dischargers for the impression of an AC and a DC voltage and a dielectric which has a particle scraping plate. CONSTITUTION:The charge holding surface of the dielectric which is charged electrostatically is set opposite to the surface of a support 7 where particles 6 are present, and particles 6 having weak electrostatic attractive force are scattered over the dielectric 5. The dielectric 5 is made of polyester resin (acrylic resin or fluororesin), and the support 7 is made of selenium, zinc oxide, etc. The dielectric 5 is destatisized by a corona discharger 9 and then charged electrostatically by a corona discharger 8 to approach opposite at a speed faster than the speed of a photosensitive body 7, and particles near the latent image or particles having weak electrostatic attractive force are scattered and held on a dielectric roller 13, from which they are removed by a blade 10. |
