| 摘要 |
PURPOSE:To prevent scattering of a magnetic carrier in a magnetic developer into a supply device and supply of a blocking toner by supplying the developer from a toner supply tank to an empty chamber above a developing area through a slit for toner supply. CONSTITUTION:A latent image on a photosensitive drum 9 is developed in a developing area A by the developer carried through an incorporated magnetic roll 11 by a developing sleeve 10. An empty chamber 15 opened to the sleeve 10 above the developeing area A and a toner supply tank 20 are connected through a slit 12a, and supply of the blocking toner to the empty chamber 15 is prevented, and scattering of the magnetic carrier in the magnetic developer, which is supplied to the empty chamber 15 and has the quantity controlled, into the supply tank 20 is prevented, and thus, good development with the one-component developer is performed. |
