| 摘要 |
PURPOSE:To prevent ground fog, by providing a rotary brush on the inside of meshes provided on the button of a case of a toner for developing an electrostatic latent imae formed on the surface, stirring the toner, and also forcibly supplying a toner to a developing brush. CONSTITUTION:This device is provided with a developing roller 2 slide-rotating in the opposite direction to the surface of a photosensitive body 1 of a dry type electronic copying machine which is rotated in the direction as indicated with an arrow. As for the developing roller 2, a conductive adhesion layer 8 is provided around a shaft 6 through a urethane layer 7, and a fur body 9 is planted. A toner 3 consisting of a nonmagnetic substance, in a case 4 is stirred by a stirring fur brush 12 which contacts with meshes 13 installed to the bottom of the case 4 and rotates, and also is supplied to a fur body 9 rotating and passing through the opposite side of the meshes 13. In this case, the toner 3 charged by friction is adjusted to a proper quantity by the meshes, the fur body 9 slides against the photosensitive surface 1, and is adhsorbed by an electrostatic latent image, which is developed. In this way, a toner is supplied by a proper quantity, and a clear picture which scarcely causes ground fog is formed. |
