Patent ID: 8655237
Filing Date: 2014-02-18
Classification: G03G

Abstract:
1. A development device comprising: a cylindrical developer bearer to carry by rotation two-component developer including toner and magnetic carrier particles to a development range where the developer bearer faces a latent image bearer; a magnetic field generator inside the developer bearer and configured to generate magnetic force to attract developer to a circumferential surface of the developer bearer, a developer regulator upstream from the development range in a rotational direction of the developer bearer and facing the circumferential surface of the developer bearer across a regulation gap for adjusting an amount of the developer carried by the developer bearer to the development range; a supply compartment adjacent to the developer bearer and partially separated by a side wall from a portion where the developer bearer is provided, the supply compartment through which developer is transported; a developer agitator in the supply compartment for transporting developer in an axial direction of the developer bearer; and a wall facing an upper end of the side wall of the supply compartment across a supply gap through which developer moves from the supply compartment toward the developer bearer, the supply gap extending at least over an entire development range in the axial direction of the developer bearer, wherein the regulation gap is positioned above an upper end of the wall.