Assume that a paper feed width of a sheet of paper of a predetermined size that is smaller than the maximum paper feed width W is W1. Then, when a sheet of paper having a width larger than the paper feed width W1 is transported, to stabilize the transportation thereof, first, second, and third fans 26a to 26c are all so rotated as to stick the entire sheet of paper to a transportation unit 25. On the other hand, when a sheet of paper having a width equal to or smaller than the paper feed width W1 is transported, only the first and third fans 26a and 26c are made to rotate to prevent an increase in the temperature of non-paper feeding areas 30a and 30b formed at the edges of a fuser roller pair 14a.

 
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