Patent ID: 7062204

Claim:
An image forming apparatus comprising: a latent image carrier; a charging apparatus for charging the latent image carrier; an exposure apparatus for forming a latent image on a charged part of the latent image carrier; and a developer for developing the latent image on the latent image carrier by attaching a powder to the latent image carrier, the developer comprising: a transfer member including a plurality of electrodes for forming a traveling-wave field for transferring the powder; and a powder supply part for supplying the powder to the transfer member, wherein the transfer member is curved such that a surface on which the plurality of electrodes are formed is placed outside and that a transfer direction of the powder is reversed on the surface, and wherein a first part of the transfer member receives the powder from the powder supply part, and a second part of the transfer member on which the transfer direction of the powder is reversed with respect to the first part is placed to be opposite to the latent image carrier, and wherein a surface of the latent image carrier is charged by the charging apparatus such that an absolute value of the charged potential of the surface of the latent image carrier is equal to or less than 300V.