Patent ID: 8014696

Claim:
An image-forming device comprising: a main casing; a process casing accommodated in the main casing and movably mounted thereon, the process casing having a plurality of casing inlets formed therein; a plurality of photosensitive members that is disposed in the process casing; a plurality of chargers that is disposed in the process casing for charging the plurality of photosensitive members, respectively; a plurality of first duct members each having a duct outlet, the plurality of first duct members being in one-to-one correspondence with the plurality of casing inlets; a fan that blows air on each of the plurality of chargers through the duct outlet of each of the plurality of first duct members and the corresponding casing inlet; and a duct moving unit that moves the plurality of first duct members between a first position in which the plurality of duct outlets is adjacent to the corresponding casing inlets formed in the process casing, and a second position in which the plurality of duct outlets is separated farther from the corresponding casing inlets than in the first position.