Patent ID: 6763214
Filing Date: 2004-07-13
Classification: G03G

Abstract:
A developing device that develops a latent image carried on a latent image carrier with a two-component developer, the developing device comprising:a developer carrier adapted to carry the two-component developer while rotating; a first developer conveying screw adapted to convey the developer from a first end of the first developer conveying screw to a second end of the first developer conveying screw and to transfer the developer to the developer carrier, the first developer conveying screw being arranged about parallel to a rotation center axis of the developer carrier; and a second developer conveying screw adapted to convey the developer from a first end of the second developer conveying screw to a second end of the second developer conveying screw and to convey the developer from the second end of the second developer conveying screw to the first end of the first developer conveying screw, the second developer conveying screw being arranged about parallel to the first developer conveying screw, wherein a following relationship is satisfied: T2&gE;3T1, where T1 is a time for conveying the developer from the first to the second end of the second developer conveying screw, and T2 is a time for conveying the developer from the first to the second end of the first developer conveying screw.