To provide a job separate device for a printer in which the number of parts of the whole of the printing device is reduced, the printer is not increased in scale, the exchange of internal parts can be performed by opening an opening and closing cover, even if the job separate device is not removed, and mounting and removing works for the job separate device are unnecessary.

This device is constituted of a second stacker 1 which is provided so as to be movable to an upper side of a first stacker 51 fixed to an upper part of a printer 50 to store printed sheets and stores printed sheets, a stacker driving part 2 for moving the second stacker 1 in the direction perpendicular to a discharging direction of printed sheets for every job and a saving mechanism 4 for moving the second stacker 1 to a saving location for isolating the second stacker 1 from an upper location of the first stacker 51.