| 摘要 |
PURPOSE:To permit sure supply of a developer to a developing roller even if the amt. of the developer contained in a developing device decreases by providing a delivery member which delivers the developer to the developing roller side as the member is taken up to the inside of the developing device. CONSTITUTION:The amt. of the toner in the developing device 31 decreases when the toner (t) is supplied to the electrostatic latent image on a photosensitive drum 13 by rotation of the developing roller 32 and the development is executed. A film 41 advances to push out the toner (t) and delivers the toner to the roller 32 side when the film 41 is taken up by turning a take-up shaft 43 manually or cooperatively with a counter for the number of copies. The developer is thereby delivered to the developing roller side and the effective use of the developer to the last is permitted. |
