A media stacker unit comprises: (i) at least one stacker wheel and (ii) a detent. The stacker wheel includes: a hub for mounting on an axle, and a plurality of arcuate tines, each tine being coupled to the hub at a hub end and extending transverse to the axle to a point radially spaced from the axle at a capture end. When the stacker wheel is rotated about the axle, the capture ends traverse a capture circumference. Each tine further comprises a resilient tine portion. The detent partially extends within the capture circumference for engaging with and temporarily retarding a capture end as the stacker wheel is rotated. This reduces the time during which that capture end blocks a media transport path, thereby reducing the possibility of a media item colliding with a capture end and jamming the media stacker unit.
1. A media stacker unit comprising:
(i) at least one stacker wheel including:
a hub for mounting on an axle, and
a plurality of arcuate tines,
each tine being coupled to the hub at a hub end and extending transverse to the axle to a point radially distal from the axle at a capture end so that when the stacker wheel is rotated about the axle the capture ends define a capture circumference, each tine further comprising a flex point having a reduced cross section and a resilient tine portion extending therefrom; and
(ii) a detent partially extending within the capture circumference for engaging with and temporarily retarding successive capture ends as the stacker wheel is rotated to reduce the time during which each capture end blocks a media transport path.
2. A media stacker unit according to claim 1 , wherein the stacker unit comprises a plurality of stacker wheels.
3. A media stacker unit according to claim 1 , wherein the hub and arcuate tines comprise the same type of material.
4. A media stacker unit according to claim 1 , wherein the resilient tine portion extends substantially the entire length of the tine.
5. A media stacker unit according to claim 1 , wherein the resilient tine portion extends for only part of the length of the tine.
6. A media stacker unit according to claim 1 , wherein the arcuate tines comprise polyoxymethylene or polyamide.
7. A media stacker unit according to claim 1 , wherein the detent comprises a metallic material.
8. A media stacker unit according to claim 1 , wherein the detent comprises an alloy.
9. A media stacker unit according to claim 1 , wherein the detent comprises a plastics material.
10. A media stacker unit according to claim 1 , wherein the detent includes a low-friction coating on a face of the detent engaging with the capture ends of the tines.
11. A media dispenser including the media stacker unit of claim 1 .
12. A self-service terminal including the media stacker unit of claim 1 .