Two-component developer, developing device, and image forming apparatus

A developing device comprising:

• a circular cylindrical developer transporting member that rotates so that a direction of movement of a portion thereof that approaches a latent image carrier that rotates is in an opposite direction, the developer transporting member carrying and transporting a two-component developer while a magnetic brush is formed, the two-component developer including toner and a magnetic carrier,
• wherein the developing device is used in states in which
• a distance between the developer transporting member and the latent image carrier is in a range of from 125 μm to 250 μm,
• a width of a region where the magnetic brush that is formed at the developer transporting member contacts a surface of the latent image carrier is in a range of from 1.0 mm to 2.25 mm, and
• a developer density of the region where the magnetic brush that is formed at the developer transporting member contacts the surface of the latent image carrier is in a range of from 0.75×10−6 to 1.50×10−6 g/m3.

An image forming apparatus comprising:

• a latent image carrier that rotates;
• and
• a developing device that includes a circular cylindrical developer transporting member that rotates so that a direction of movement of a portion of the developer transporting member that approaches the latent image carrier is in an opposite direction, the developer transporting member carrying and transporting a two-component developer while a magnetic brush is formed, the two-component developer including toner and a magnetic carrier,
• wherein a distance between the developer transporting member and the latent image carrier is in a range of from 125 μm to 250 μm,
• a width of a region where the magnetic brush that is formed at the developer transporting member contacts a surface of the latent image carrier is in a range of from 1.0 mm to 2.25 mm, and
• a developer density of the region where the magnetic brush that is formed at the developer transporting member contacts the surface of the latent image carrier is in a range of from 0.75×10−6 to 1.50×10−6 g/m3.