Patent ID: 6925276

Claim:
An image forming apparatus comprising: an image carrier, which rotates about a shaft; an exposure device for forming a latent image on the image carrier; a plurality of developing devices each having a developing roller for developing the latent image at a developing position; a revolver which holds the plurality of developing devices, said revolver sequentially moving each developing roller of the developing devices to the developing position by rotating about a shaft; a support frame which rotatably supports the shaft of the revolver; a positioning device, which positions the image carrier out of contact with the revolver by supporting the shaft of the revolver and that of the image carrier, and which defines a predetermined gap between each of the developing rollers and image carrier at the developing position; an intermediate transfer member which is in contact with the image carrier at a top portion of the image carrier in a vertical direction, said intermediate transfer member carrying an image formed on the image carrier.