To provide a digital photographic processor capable of surely preventing the vibration of a cooling fan from being transmitted to an exposure unit, even in the case a light source or a casing for the light source is adjacently attached to the exposure unit.

In the exposure part E of the digital printer (digital photographic processor), the exposure unit 15 and the light source casing 16 which is arranged adjacent to the unit 15 and for storing a light source lamp 18 are arranged in a dark room 13. A cooling fan 22 for ventilating and cooling the light source lamp 18 through an air sending duct which is constituted by connecting a light source side duct 20 and a cooling fan side duct 21 (partitioning wall 12) through cushioning material 23 is arranged in a bright room 14 so as to be separated from the exposure unit 15 and the light source easing 16, then, the vibration of the cooling fan 22 is prevented from being transmitted to the exposure unit 15.