Image forming apparatus

摘要

An image forming apparatus includes a transfer roller pressed against an image carrier for transferring an image from the image carrier to a recording medium being conveyed via a nip between the transfer roller and the image carrier. The transfer roller is positioned in an angular range of less than ±90° from the top of said image carrier in the direction of rotation of the image carrier. In addition, the transfer roller has a greater diameter at its opposite end portions than at its center portion in the axial direction thereof.