| 摘要 |
Provided is a line head module (101) including line heads (1) on which a plurality of light emission elements (3) are arrayed and exposing a photosensitive body (9) by the light from the light emission elements, including: a support (10) having a rotation axis (10a) parallel to the rotation axis (9a) of the photosensitive body (9); and the plurality of line heads (1) which are provided on the circumferential surfaces of the support (10) and switched with respect to the photosensitive body (9) by rotating the support (10) about the rotation axis (10a). |
