| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce stress in a developer, stabilize toner chargeability and prevent uneven toner density in a development device using a two-component developer. <P>SOLUTION: A development device includes: first and second developer transport paths for circularly transporting a two-component developer; a first transport member disposed internally in the first developer transport path; a second transport member disposed internally in the second developer transport path; a developing roller for supplying a photoreceptor drum with a developer in the first developer transport path; a developer recycle path for guiding a developer remaining on a surface of the developing roller to a direction departing from the first developer transport path; a third developer transport path for transporting the developer guided to the developer recycle path; a third transport member disposed internally in the third developer transport path; a toner replenishing port for replenishing new toner to the third developer transport path; a developer pump-up transport path for guiding a toner-replenished developer to the second developer transport path; and a developer pump-up member disposed internally in a developer suctioning transport path, the member for transporting the developer. <P>COPYRIGHT: (C)2012,JPO&INPIT |
