Patent ID: 8326180
Filing Date: 2012-12-04
Classification: G03G

Abstract:
1. A development device to develop a latent image formed on an image carrier with two-component developer consisting essentially of toner and magnetic carrier particles, the development device comprising: a developer carrier disposed facing the image carrier, to carry the developer by rotation; a magnetic field generator disposed inside the developer carrier, to form multiple magnetic poles around the developer carrier; an interior wall that divides an interior of the development device into a first transport chamber and a second transport chamber parallel to the first transport chamber; a first transport member disposed in the first transport chamber, facing the developer carrier, to supply the developer to the developer carrier while transporting the developer longitudinally within the development device; a second transport member disposed in the second transport chamber, facing the developer carrier, to transport the developer separated from the developer carrier longitudinally within the development device; and a partition disposed between the developer carrier and the second transport member so as not to contact the developer carrier, and to prevent the developer in the second transport chamber from being supplied to the developer carrier, wherein a length of a shorter side of the partition, perpendicular to the longitudinal direction of the development device, decreases progressively from a downstream side to an upstream side in a direction in which the second transport member transports the developer.