A taper-adjustable roller includes a support shaft, support sheets arranged circumferentially around the support shaft, and a first push member. Circumferential surfaces of the support sheets at sides of the support sheets facing away from the support shaft are assembled to form a roll surface. Each support sheet has a first end and a second end in an axial direction of the support shaft. The support sheets are swingable relative to the support shaft. The first push member is disposed on the support shaft, and is configured to push the first ends of the support sheets in a substantially radial direction, to move the first ends towards the support shaft and move the second ends away from the support shaft, or to move the first ends away from the support shaft and move the second ends towards the support shaft.

A sheet-type medium separating apparatus applicable in a self-service financial device for reliable sheet-by-sheet separation of an entire stack of banknotes. The apparatus includes a pickup roller component; a reversal roller component; and a separation roller component, where the reversal roller component includes a reversal roller, the reversal roller is fitted onto a reversal roller shaft via a one-way bearing, the reversal roller is provided with an inner sleeve cylinder fixed with the one-way bearing and a reversal roller sleeve sleeved onto the inner sleeve cylinder and capable of moving axially and flexibly. The separating apparatus allows for automatic adjustment of the meshing clearance between the reversal roller and the separation roller on the basis of the thickness of sheet-type media to be separated, thus effectively solving the problem of the sheet-type media being jammed or torn.

A sheet discharging apparatus includes a supporting portion, a first roller, and a second roller. The circumference surface includes a first end, and a second end. In a state where a rotation radius of the circumference surface at the first end is referred to as a first radius, a rotation radius of the circumference surface at the second end is referred to as a second radius, a rotation radius of the first surface is referred to as a third radius, and a rotation radius of the second surface is referred to as a fourth radius, (i) the circumference surface is inclined with respect to the second axial direction such that the first radius is greater than the second radius, (ii) the third radius is greater than the first radius, and (iii) the fourth radius is smaller than the second radius.