DEVELOPING DEVICE, AND IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE INCORPORATING SAME

摘要

A developing device includes a developer bearer to carry, by rotation, developer including toner and magnetic carrier to a developing range facing a latent image bearer; a casing including a developer container and an opening to expose a part of the developer bearer disposed in the casing; an opposing face of the casing including a conductive material and opposing to a surface of the developer bearer downstream from the developing range in a direction of rotation of the developer bearer; a developing bias source to apply a developing bias to the developer bearer; and an insulation layer disposed on the opposing face of the casing. The opposing face is disposed across, from the developer bearer, a casing gap sized to allow the developer borne on the developer bearer to contact the opposing face.

主权项

1. A developing device comprising:
a developer bearer to carry, by rotation, developer including toner and magnetic carrier to a developing range facing a latent image bearer; a casing including a developer container to contain the developer and an opening through which a part of the developer bearer disposed in the casing faces the latent image bearer; the casing including an opposing face opposing to a surface of the developer bearer downstream from the developing range in a direction of rotation of the developer bearer across a distance, the opposing face including a conductive material and disposed across a casing gap from the developer bearer, the casing gap sized to allow the developer borne on the developer bearer to contact the opposing face; a developing bias source to apply a developing bias to the developer bearer; and an insulation layer disposed on the opposing face of the casing.