<p>A sheets processing machine (100) comprises an upper unit (10) having a sheets uptake device (120) for taking up sheets one by one from the outside, an upper conveyance mechanism (201a) for conveying the sheets taken up by the paper uptake device (120) one by one, and a section (220) for identifying the sheets conveyed by the upper conveyance mechanism (201a), and a lower unit (20) disposed below the upper unit (10) and having a lower conveyance mechanism (201b) provided to receive the sheets one by one from the upper conveyance mechanism (201a) and to further convey the received sheets, and a plurality of section (106) where the sheets conveyed by the lower conveyance mechanism (201b) are stacked while being sorted based on the identification results from the identifying section (220). At least a part of the bottom of the upper unit (10) is in open state. A partition member (30) is disposed between the upper unit (10) and the lower unit (20).</p>
