Development device and image forming apparatus using the same

An image forming apparatus, comprising:

• an image carrier;
• a latent image forming section for forming an electrostatic latent image on the image carrier;
• a first toner carrier for carrying toner on a surface thereof to develop with the toner the electrostatic latent image on the image carrier;
• a second toner carrier for carrying toner on a surface thereof to develop with the toner the electrostatic latent image formed on the image carrier;
• and
• a developer carrier which is provided so as to face the first toner carrier and the second toner carrier and is adapted to carry developer in a thin layer shape on a surface thereof to supply toner contained in the developer to the first toner carrier and the second toner carrier,
• wherein the first toner carrier is disposed so as to face the developer carrier at upstream in a rotating direction of the developer carrier, and the second toner carrier is disposed so as to face the developer carrier at downstream in the rotating direction of the developer carrier, and counter-charge generated by the supply of toner from the developer on the developer carrier in the developer at a first facing area between the developer carrier and the first toner carrier remains in the developer without decreasing to disappear until the counter-charge is conveyed to a second facing area between the developer carrier and the second toner carrier.