A sheet post-processing apparatus that performs post-processing on a sheet on which an image is formed includes: a punch hole forming portion; and a sheet bundle forming portion that has a conveyance portion, stops a first sheet on a conveyance path, and conveys a second sheet after the first sheet to a position overlapping the first sheet to form a sheet bundle. The sheet post-processing apparatus includes a shift portion to make a shift so that a relative position between the first sheet and the second sheet in a direction orthogonal to a conveyance direction becomes a relative position at which the second sheet does not overlap a punch hole of the first sheet to make the second sheet overlap the first sheet, and forms a sheet bundle in which sheets overlapped with each other are deviated in a width direction.

A sheet post-processing apparatus that performs post-processing on a sheet on which an image is formed includes: a punch hole forming portion; and a sheet bundle forming portion that has a conveyance portion, stops a first sheet on a conveyance path, and conveys a second sheet after the first sheet to a position overlapping the first sheet to form a sheet bundle. The sheet post-processing apparatus includes a shift portion to make a shift so that a relative position between the first sheet and the second sheet in a direction orthogonal to a conveyance direction becomes a relative position at which the second sheet does not overlap a punch hole of the first sheet to make the second sheet overlap the first sheet, and forms a sheet bundle in which sheets overlapped with each other are deviated in a width direction.

A medium guiding device includes an upstream side rollers pair, a downstream side rollers pair, a first rib, a second rib and an interlocking part. In a first conveying state where the medium is conveyed while being held by the upstream side rollers pair and separated from the downstream side rollers pair, the interlocking part retreats the first rib from a curved path and protrudes the second rib into the curved path. In a second conveying state where the medium is conveyed while being held by the downstream side rollers pair, the interlocking part protrudes the first rib into the curved path and retreats the second rib from the curved path.

An ATM includes a sheet driving system with a sheet path along which sheets travel, and sheet sensors and sheet drive mechanisms adjacent the sheet path. One sheet drive mechanism is disposed apart from another sheet drive mechanism in a direction relative to the sheet path, and each sheet drive mechanism is selectively operative to change relative speed and direction of movement of disposed areas of a sheet as the sheet travels adjacent to the sheet drive mechanisms along the sheet path. A control system is responsive to sensing a sheet with a sensor to selectively actuate a sheet drive mechanism to change the position of the sheet relative to the sheet path.

An ATM includes a sheet driving system with a sheet path along which sheets travel, and sheet sensors and sheet drive mechanisms adjacent the sheet path. One sheet drive mechanism is disposed apart from another sheet drive mechanism in a direction relative to the sheet path, and each sheet drive mechanism is selectively operative to change relative speed and direction of movement of disposed areas of a sheet as the sheet travels adjacent to the sheet drive mechanisms along the sheet path. A control system is responsive to sensing a sheet with a sensor to selectively actuate a sheet drive mechanism to change the position of the sheet relative to the sheet path.

A paper sheet sorting unit where a second guide path (2) is formed between the first sorting member (11) and the second sorting member (12), a first guide path (1) is formed on the exterior of the first sorting member (11), and a third guide path (3) is formed on the exterior of the second sorting member (12), the first sorting member (11) is driven by a power transmitted from an exterior to guide the paper sheets to the first guide path (1), the second sorting member (12) is driven by the power transmitted from the exterior to guide the paper sheets to the third guide path (3), and the first sorting member (11) and the second sorting member (12) are respectively driven in an opposite direction by the power transmitted from the exterior to guide the paper sheets to the second guide path (2).

A medium conveyance apparatus includes an apparatus body and a reverse path unit. The reverse path unit includes a reverse roller configured to reverse a medium, and the reverse path unit is configured to be attachable/detachable to/from the apparatus body. The reverse path unit includes a support tray, an operation unit, and an opening portion. The support tray is configured to switch between a drawn state where the support tray is drawn out from the reverse path unit and a stored state where the support tray is stored in the reverse path unit. The support tray is configured to support a medium to be fed in the drawn state. The operation unit is operated to attach/detach the reverse path unit to/from the apparatus body. The opening portion is provided in the support tray and configured to enable operation of the operation unit.