| 摘要 |
PURPOSE:To control the thickness of a toner to a proper value to prevent the variance of development by pressing a blade, which controls the thickness of the toner on a toner carrier from which the toner is supplied to a latent image carrier, to the toner carrier with a magnetic force. CONSTITUTION:The toner 2 in a tank 1 is agitated by an agitator 3 and is supplied to a sleeve 5 in the direction of an arrow A by a toner supply roll 4. The thickness of the toner 2 is controlled by a blade, which has one end supported on the tank 1 and consists of an elastic body, to supply the toner onto the sleeve 5. A magnet is provided in the side opposite to the face of the blade 6 brought into contact with the sleeve 5, and a core member 8 of the sleeve 5 is constituted with a magnetic material, and the blade 6 is pressed to the sleeve by the attraction of the magnetic force between them, and the toner is controlled thinly and uniformly and is supplied. Thus, the variance of development is prevented. |
