Patent ID: 8744320
Filing Date: 2014-06-03
Classification: G03G

Abstract:
1. A developing device for storing a developer and supplying the developer to an image bearing member to develop an electrostatic latent image on the image bearing member, comprising: a developer tank which stores therein the developer; a partition wall which divides an internal space of the developer tank into: a first developer conveying section disposed in the first conveying path, the first developer conveying section conveying the developer in the developer tank in the substantially horizontal direction, the first developer conveying section conveying the developer from the other end side to the one end side in the longitudinal direction of the partition wall; a second developer conveying section disposed in the second conveying path, the second developer conveying section conveying the developer in the developer tank in the substantially horizontal direction, the second developer conveying section conveying the developer from the one end side to the other end side in the longitudinal direction of the partition wall; and a developer pumping section disposed in the pumping path, the developer pumping section pumping the developer in the pumping path toward an upper side in the substantially vertical direction of the pumping path, the developer pumping section moving part of the developer to a side of the first conveying path by pumping the developer in the pumping path, while moving other part of the developer to a side of the second conveying path, wherein the partition wall further comprises: wherein the second developer conveying section is configured to move the developer in the second conveying path into the pumping path through the first opening portion, and the developer pumping section is configured to move the part of the developer in the pumping path into the first conveying path through the second opening portion, while moving the other part of the developer into the second conveying path through the third opening portion.