| 摘要 |
PURPOSE:To remove a magnet roll in a sleeve, to distribute only a toner by using a magnetic brush seal to the surface of the sleeve, and also to develop an electrostatic image which is capable of recording of a high picture quality, by forming a magnetic brush by adsorbing a carrier contained in a developer to a magnet of the surface of a toner carrying body, and forming a toner vessel so as to contain an area surrounded by the magnetic brush. CONSTITUTION:A sleeve 11 is connected to a bias power source 20 without having a magnet roll 4. Subsequently, rod-shaped magnets 12, 13 are provided opposingly and fixed so as to be close to the surface of the sleeve 11, a magnetic carrier is adsorbed to the magnets 12, 13, the respective magnetic brushes are formed, and the magnetic brush is slid and moved against the surface of the sleeve. A toner vessel is formed so as to contain an area surrounded by the magnetic brush, and a replenishing toner 15 is thrown into this vessel. Subsequently, the toner is charged by a friction against the carrier or the sleeve surface, this toner is made to adhere and distributed electrostatically to the sleeve surface, and a thin film layer of the toner is formed. Next, the thin film layer of this toner is made to contact adjacently to an electric latent image of the surface of a recording body 1, made to adhere to the electric latent image, and the electric latent image is developed. |
