Patent ID: 9201336
Filing Date: 2015-12-01
Classification: G03G

Abstract:
1. A developing device comprising: a toner bearing member configured to bear a toner on a surface of the toner bearing member and configured such that the surface thereof is rotated to supply the toner to and develop a latent electrostatic image on a surface of a latent electrostatic image bearing member in a developing region which faces the latent electrostatic image bearing member; and a regulating member configured to regulate an amount of the toner to be moved towards the developing region, wherein the surface of the toner bearing member has regularly arranged convex portions, a height of the convex portions being greater than a volume average particle diameter of the toner, wherein the surface of the toner bearing member is provided with a film by a treatment which is a vapor deposition treatment, wherein the film is a diamond like carbon film, wherein the toner has a volume average particle diameter (Dv) of 3 μm to 8 μm, and wherein a ratio (Dv/Dn) of the volume average particle diameter (Dv) to a number average particle diameter (Dn) of the toner is 1.00 to 1.40.