Patent ID: 8068762

Claim:
An image forming device, comprising: a first device body having an opening; a second device body attached to the first device body in an openable and closable manner so as to cover the opening of the first device body; a photoconductive body, provided to the first device body, which is configured with a circumferential surface thereof endlessly-movable in a predetermined moving direction; an exposure unit, provided to the second device body, which is configured to scan and expose the circumferential surface of the photoconductive body with light in a predetermined scanning direction such that a latent image is formed on the circumferential surface, the exposure unit including: an exposure surface configured to emit therefrom the light for the scanning operation; an opposed surface disposed to face the exposure surface; a first side surface disposed to connect the exposure surface with the opposed surface; and a second side surface disposed to face the first side surface; and a positioning mechanism having at least three contact members disposed to stably position the exposure unit with respect to the photoconductive body when the second device body is closed, the at least three contact members including: a first contact member comprising a roller configured to rotate and configured to contact the exposure unit in a first contact point at a side of the first side surface; a second contact member configured to contact the exposure unit in a second contact point at the side of the first side surface, the second contact point being located closer to the exposure surface than the first contact point in a predetermined direction from the exposure surface toward the opposed surface; and a third contact member comprising a roller configured to rotate and configured to contact the exposure unit in a third contact point at a side of the second side surface, the third contact point being located between the first contact point and the second contact point in the predetermined direction.