Developer carrier having grooves on surface thereof, developing device including the developer carrier, and image forming apparatus including the developing device

摘要

A developing device for developing a latent image formed on an image carrier includes a developer carrier having a developer carrying surface. The developer carrying surface includes a plurality of grooves to carry the developer. Dispersion D (%) in depth of the plurality of grooves is calculated according to an equation, D (%)={(A-B)/2}/C, where A is a maximum depth of the plurality of grooves, B is a minimum depth of the plurality of grooves, and C is an average depth of the plurality of grooves. The dispersion D (%) is at most approximately 30%.