Patent ID: 9141034
Filing Date: 2015-09-22
Classification: G03G

Abstract:
1. A developing device comprising: a developer bearer to carry developer including magnetic carrier and toner to a development range where the developer bearer faces a latent image bearer; a magnetic field generator provided inside the developer bearer to generate a magnetic flux on the surface of the developer bearer; a casing including an opening to partly expose a surface of the developer bearer in the development range; and a lateral end cover to cover an axial end portion of the exposed surface of the developer bearer, the lateral end cover including a wide portion extending more to an axial inner side of the developer bearer than a downstream portion of the lateral end cover positioned downstream from the wide portion in a direction of rotation of the developer bearer, wherein a downstream end of the wide portion is downstream from an upstream end of the development range in the direction of rotation of the developer bearer, and wherein an inner periphery of the downstream portion of the lateral end cover in an axial direction of the developer bearer is shaped to follow the direction of rotation of the developer bearer.