To prevent deformation to relatively stiffer sheets during flipping, while ensuring reliable holding of relatively weaker sheets, a method for stacking sheets received from a printer by a sheet flipping device includes at least one slot for receiving a leading portion of a sheet. The method includes determining a respective insertion depth parameter for a first and a second sheet, wherein the second sheet has a greater stiffness than the first sheet; inserting a length of the first sheet into the at least one slot in correspondence with its respective insertion depth parameter, followed by flipping said first sheet; inserting a length (D2) of the second sheet into the at least one slot in correspondence with its respective insertion depth parameter, followed by flipping said second sheet, wherein the inserted length of the first sheet is greater than that of the second sheet.

A paper sheet stacking mechanism 50 includes a stacking wheel 52, a roller 54 that is disposed outward from the stacking wheel 52 so as to be coaxially aligned with the stacking wheel 52 and that is rotatable about a shaft 53 at a greater angular velocity than that of the stacking wheel 52, and a transport unit that is configured to transport a paper sheet to the gap between two adjacent vanes 52b of the stacking wheel 52. The transport unit is located such that a discharge position is disposed outward from the outer periphery of the base 52a of the stacking wheel 52 and inward of the circular region defined by the tips of the vanes 52b of the stacking wheel 52 during the rotation of the stacking wheel 52, when viewed in the axial direction of the shaft 53 of the stacking wheel 52.

A paper sheet stacking mechanism 50 includes a stacking wheel 52, a roller 54 that is disposed outward from the stacking wheel 52 so as to be coaxially aligned with the stacking wheel 52 and that is rotatable about a shaft 53 at a greater angular velocity than that of the stacking wheel 52, and a transport unit that is configured to transport a paper sheet to the gap between two adjacent vanes 52b of the stacking wheel 52. The transport unit is located such that a discharge position is disposed outward from the outer periphery of the base 52a of the stacking wheel 52 and inward of the circular region defined by the tips of the vanes 52b of the stacking wheel 52 during the rotation of the stacking wheel 52, when viewed in the axial direction of the shaft 53 of the stacking wheel 52.

A paper-sheet counting machine (10) includes: a recognition and counting unit (24) configured to count paper sheets; a stacking unit (26) configured to stack therein the paper sheets that have been counted by the recognition and counting unit (24), an opening being provided in a front face of the stacking unit (26); a rotary guide unit (28) provided to the stacking unit (26) and configured to allow the paper sheets that have been counted by the recognition and counting unit (24) to be stacked in the stacking unit (26); a shutter (40) configured to close the opening provided in the front face of the stacking unit (26); a shutter drive unit (50) configured to drive the shutter (40) to open and close the opening provided in the front face of the stacking unit (26); and a control unit (70) configured to control the shutter drive unit (50).

A paper-sheet counting machine (10) includes: a recognition and counting unit (24) configured to count paper sheets; a stacking unit (26) configured to stack therein the paper sheets that have been counted by the recognition and counting unit (24), an opening being provided in a front face of the stacking unit (26); a rotary guide unit (28) provided to the stacking unit (26) and configured to allow the paper sheets that have been counted by the recognition and counting unit (24) to be stacked in the stacking unit (26); a shutter (40) configured to close the opening provided in the front face of the stacking unit (26); a shutter drive unit (50) configured to drive the shutter (40) to open and close the opening provided in the front face of the stacking unit (26); and a control unit (70) configured to control the shutter drive unit (50).

According to one embodiment, a sheet post-processing apparatus includes: a supporting member configured to support a trailing end portion in a conveying direction of a sheet; a plurality of paddles configured to rotate around a rotating shaft independently from the supporting member, nip and hold the trailing end portion of the sheet in conjunction with the supporting member from both sides in a thickness direction of the sheet, and nip and hold trailing end portions of following sheets, which are stacked on the sheet, one by one from the thickness direction of the trailing end portion, in the plurality of paddles, a length from the rotating shaft to a distal end of a paddle on a far side from the supporting member in a rotating direction being relatively larger than a length from the rotating shaft to a distal end of a paddle on a near side from the supporting member in the rotating direction; and an arm member configured to press a trailing end portion of an uppermost sheet in a stacking direction of the sheet and the at least one sheet toward the supporting member, and formed in a comb teeth shape that does not interfere with rotation tracks of the plurality of paddles while pressing the trailing end portion of the sheet toward the supporting member.

According to one embodiment, a sheet post-processing apparatus includes: a supporting member configured to support a trailing end portion in a conveying direction of a sheet; a plurality of paddles configured to rotate around a rotating shaft independently from the supporting member, nip and hold the trailing end portion of the sheet in conjunction with the supporting member from both sides in a thickness direction of the sheet, and nip and hold trailing end portions of following sheets, which are stacked on the sheet, one by one from the thickness direction of the trailing end portion, in the plurality of paddles, a length from the rotating shaft to a distal end of a paddle on a far side from the supporting member in a rotating direction being relatively larger than a length from the rotating shaft to a distal end of a paddle on a near side from the supporting member in the rotating direction; and an arm member configured to press a trailing end portion of an uppermost sheet in a stacking direction of the sheet and the at least one sheet toward the supporting member, and formed in a comb teeth shape that does not interfere with rotation tracks of the plurality of paddles while pressing the trailing end portion of the sheet toward the supporting member.

A banknote-passing type banknote conveying device, used at a banknote inlet-outlet of an automatic teller machine, includes a mounting lateral plate, a banknote stacking mechanism, a banknote clamping and conveying mechanism, a pressing mechanism, a jacking mechanism, and a central control unit for controlling the operation of the above mechanisms. The banknote-passing type banknote conveying device uses a lifting motor and a connection rod to drive a lifting plate to move the banknotes up and down, and uses a pressing plate to move the banknotes back and forth. The functions of stacking and passing banknotes are achieved in an effective space. Moreover, a pull type electromagnet and a spring are used to control the opening and closing of the banknote clamping and conveying mechanism, thus a traditional motor control method and the like can be omitted, such that the cost is low, and the reliability is high.

A post-processing device includes a stacking portion on which a medium having an image recorded thereon is stacked; an aligning portion that is disposed on the stacking portion and that aligns a position of an edge of the medium; a drawing member that draws the medium stacked on the stacking portion toward the aligning portion; and a guiding member that is disposed above the drawing member and that guides the medium that is transported toward the stacking portion, the guiding member including a vicinity portion that is in a vicinity of the drawing member and that is recessed so as to receive the drawing member.

A post-processing device includes a stacking portion on which a medium having an image recorded thereon is stacked; an aligning portion that is disposed on the stacking portion and that aligns a position of an edge of the medium; a drawing member that draws the medium stacked on the stacking portion toward the aligning portion; and a guiding member that is disposed above the drawing member and that guides the medium that is transported toward the stacking portion, the guiding member including a vicinity portion that is in a vicinity of the drawing member and that is recessed so as to receive the drawing member.