Patent ID: 9008553
Filing Date: 2015-04-14
Classification: G03G

Abstract:
1. A developer conveying device, comprising: a housing with a pair of walls; a developer conveyance path extending between the walls; and a conveying member rotatably supported on the walls and configured to convey developer from one of the walls toward the other of the walls; wherein the conveying member includes: a spiral member having a plurality of spiral revolutions formed about an axis and extending in a conveying direction of the developer and a hollow interior being defined radially inward of the spiral member; shafts arranged at opposite ends of the conveying member and rotatably supporting the conveying member on the walls and serving as a rotary shaft for rotation of the conveying member; ribs extending in the conveying direction and bridging adjacent ones of the spiral revolutions of the spiral member and projecting axially beyond the spiral member, a plurality of the ribs being arranged at intervals in a circumferential direction of the conveying member; supporting members arranged to face the walls and connecting the shafts with end parts of the ribs that project axially beyond the spiral member; and projecting portions extending from the end parts of the ribs that project axially beyond the spiral member so that the projecting portions project axially beyond the respective supporting member, the projecting portions facing each other in a radial direction of the conveying member.