| 摘要 |
PURPOSE:To obtain high-quality images which are free form toner contamination and fogging by using the developer formed by making combination use of the particles of a positive chargeable resin having specific properties and the fine powder of a fatty acid metal salt with inorg. fine powder treated with a silicone oil. CONSTITUTION:An electrifying member is brought into contact with a body to be electrified and a voltage is impressed thereto from the outside to electrify the member. the member is developed by using the developer contg. a toner, the fine particles of the positive chargeable resin having 0.03 to 1.0mum average grain size and 10<6> to 10<9>OMEGA.cm specific electric resistance and the hydrophobic inorg. fine powder treated with the silicone oil or varnish. The particles of the negative chargeable resin of the toner act to adsorb the inorg. fine powder treated with the silicone oil or varnish and the adsorbed inorg. fine powder forms a thin film together with the fine powder of the fatty acid metal salt on the surface of a photosensitive body, thus preventing the flawing and toner sticking on the surface of the photosensitive body by the decreased friction resistance and surface energy. The high-quality images which are free from the toner contamination and fogging are thus obtd. |
