Patent ID: 9658571
Date: 2017-05-23
CPC Classifications: G03G

Claim:
1. A developing device comprising: a photosensitive body on which an electrostatic latent image is formed; a development chamber; a development roller that faces the photosensitive body and transfers toner to the electrostatic latent image; a supply roller that supplies toner in the development chamber to the development roller; an agitating member disposed under the supply roller in the development chamber, said agitating member being arranged to agitate the toner that is in the development chamber; and a toner supply unit that supplies the toner to the development chamber by conveying the toner in a longitudinal direction that is an axial direction of the development roller, wherein the toner supply unit is disposed above the supply roller, the toner supply unit comprises a supply hole through which the toner conveyed in the longitudinal direction drops into the development chamber, and at least a part of a projection of the supply hole in a gravity direction overlaps the supply roller.