| 摘要 |
PROBLEM TO BE SOLVED: To prevent damage to a light tunnel.SOLUTION: An image irradiation device includes: a cylindrical light tunnel for uniforming light emitted from a light source device and guiding it to an image forming element; a position adjustment unit which moves the light tunnel in at least one of vertical and lateral directions; and an elastic section which is arranged in the moving direction of the light tunnel and comes into contact with the light tunnel to support the light tunnel with an elastic force. The elastic section includes a first elastic section having one end in contact with the light tunnel, and a second elastic section lower than the first elastic section and not in contact with the light tunnel. |
