| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a developing device capable of recovering toner remained after developed in an end of a developing roller, and capable of obtaining a satisfactory image, and to provide an image forming apparatus with the same. <P>SOLUTION: The developing device supplies the toner in a developer for forming a magnetic brush to the developing roller 72, by bringing the magnetic brush held by a rotary sleeve 73 into contact with the developing roller 72, and by applying a bias voltage to a magnetic roller 71, and a latent image on a photoreceptor is developed by the toner. A plurality of grooves 73a extended along an axial direction of the rotary sleeve 73 is formed on an outer circumferential face of the rotary sleeve 73, and Expression L>M≥N is satisfied where L represents an axial-directional length of the plurality of grooves 73a, M represents an axial-directional length of a magnetic member 74, and N represents an axial-directional length of the developing roller 72. <P>COPYRIGHT: (C)2010,JPO&INPIT |
