Patent ID: 6064847
Filing Date: 2000-05-16
Classification: G03G

Abstract:
A developing device for developing an electrostatic latent image on an electrostatic-latent-image bearing body comprising:a developer-bearing body which bears a one-component developer on a surface thereof and develops the electrostatic latent image by contacting the electrostatic-latent-image bearing body;a developer-supplying member for supplying developer to the developer-bearing body; anda developer-layer regulating member which contacts the developer-bearing body so as to regulate a layer thickness of the developer that has been supplied by the developer-supplying member,wherein supposing that the developer has a volume-average particle size represented by Dbk, the developer at this time being maintained on the developer-bearing body as a layer that has been supplied by the developer-supplying member and again formed so as to have a predetermined thickness by the developer-layer regulating member after the developer-bearing body, on which the developer was formed as a layer having a predetermined thickness, carried out a colored-image developing process, and supposing that the volume-average particle size of the developer is Dwt, the developer at this time being maintained on the developer-bearing body as a layer that has been supplied by the developer-supplying member and again formed so as to have a predetermined thickness by the developer-layer regulating member after the developer-bearing body, on which the developer was formed as a layer having a predetermined thickness, carried out a non-color-image developing process, an inequality, Dwt/Dbk>0.8 is satisfied.