Patent ID: 8594545

Claim:
An image-forming device comprising: an image carrier belt that carries an image; a roller that winds the image carrier belt; a transfer material transporting member that transports a transfer material; and a transfer roller that transfers the image to the transfer material at a nip, the transfer roller including a concaved portion formed on a peripheral surface thereof and a transfer material gripping portion that grips the transfer material in the concaved portion, the nip being formed between the transfer roller and the roller, the transfer roller being in contact with the roller via the image carrier belt, a first interaxial distance between a rotation axis of the transfer roller and a rotation axis of the roller as the transfer material is gripped by the transfer material gripping portion being larger than a second interaxial distance between the rotation axis of the transfer roller and the rotation axis of the roller as the image is being transferred onto the transfer material at the nip.