A stacking apparatus for value documents, having a stack deposit device and a braking device which is arranged along the transport path of the value documents immediately before the stack deposit device. On the transport shaft of the braking device at least one driving roller is firmly mounted and at least one roller rotatably supported on the transport shaft. At least one cam roller is firmly mounted on a braking shaft of the braking device and at least one eccentric roller. By a rotation of the braking shaft, the eccentric roller can electively be brought in engagement with the opposing driving roller so that a value document becomes clamped between these, or be brought out of engagement with the opposing driving roller, so that the value document is no longer clamped between these, but rather is brakable by the engagement between the cam roller and the rotatably supported roller.

A post-processing device includes an output unit that outputs a medium; a stacking unit on which the medium that is output is stacked; and a blow-out unit that is disposed below the output unit and that blows gas toward the medium that is output, wherein an amount of the gas blown varies in a width direction that crosses a direction in which the medium is output.

A post-processing device includes an output unit that outputs a medium; a stacking unit on which the medium that is output is stacked; and a blow-out unit that is disposed below the output unit and that blows gas toward the medium that is output, wherein an amount of the gas blown varies in a width direction that crosses a direction in which the medium is output.

A post-processing device includes an output unit that outputs a medium; a stacking unit on which the medium that is output is stacked; and a blow-out unit that is disposed below the output unit and that blows gas toward the medium that is output, wherein a direction in which the gas is blown differs in accordance with a type of the medium.

A post-processing device includes an output unit that outputs a medium; a stacking unit on which the medium that is output is stacked; and a blow-out unit that is disposed below the output unit and that blows gas toward the medium that is output, wherein a direction in which the gas is blown differs in accordance with a type of the medium.

A sheet conveying apparatus, including a conveyer to convey a sheet in a predetermined conveying direction along a predetermined conveyer path, and a discharger forming a part of the conveyer to discharge the sheet from the conveyer path, is provided. The discharger includes a driving roller, a pinch roller arranged to confront the driving roller across the conveyer path, and an urging member to urge the pinch roller against the driving roller. The conveyer includes a chute member. The chute member includes a guiding face defining a part of the conveyer path, a supporting face to support one end of the urging member, and a contact face located on a particular face of the chute member opposite from the supporting face. The sheet conveying apparatus includes a plate member made of metal arranged to extend in a direction intersecting with the conveying direction and to contact the contact face.

An image forming apparatus includes an image forming unit configured to form an image on a sheet, a stacking portion on which the sheet having the image formed thereon is to be stacked, a first roller capable of forward and reverse rotations, a second roller capable of rotating with the first roller when the first roller makes a forward rotation, a third roller capable of rotating with the first roller when the first roller makes a reverse rotation and then the forward rotation, a regulation portion movable between a regulation position where entering of the sheet into a nip portion between the first and second rollers is prevented, and an allowing position where discharge of the sheet is allowed, and a movement unit configured to cause the regulation portion to be placed in the allowing position during forward rotation, and to be placed in the regulation position during reverse rotation.

An image forming apparatus includes an image forming unit configured to form an image on a sheet, a stacking portion on which the sheet having the image formed thereon is to be stacked, a first roller capable of forward and reverse rotations, a second roller capable of rotating with the first roller when the first roller makes a forward rotation, a third roller capable of rotating with the first roller when the first roller makes a reverse rotation and then the forward rotation, a regulation portion movable between a regulation position where entering of the sheet into a nip portion between the first and second rollers is prevented, and an allowing position where discharge of the sheet is allowed, and a movement unit configured to cause the regulation portion to be placed in the allowing position during forward rotation, and to be placed in the regulation position during reverse rotation.

An image forming apparatus, having a housing with an opening, an image forming unit, a path to guide a recording medium toward the opening, a reversible roller disposed in the path, and an intermediate reversible roller disposed between the image forming unit and the reversible roller, is provided. A rotating direction of the reversible roller is switchable between a first rotating direction and a second rotating direction opposite from the first rotating direction. A circumferential speed of the reversible roller is switchable between a predetermined circumferential speed and none. A rotating direction of the intermediate reversible roller is switchable between a third rotating direction and a fourth rotating direction opposite from the third rotating direction. The circumferential speed of the reversible roller in the first rotating direction is reduced to be lower than the predetermined circumferential speed while the intermediate reversible roller is rotating in the third rotating direction.

An image forming apparatus, having a housing with an opening, an image forming unit, a path to guide a recording medium toward the opening, a reversible roller disposed in the path, and an intermediate reversible roller disposed between the image forming unit and the reversible roller, is provided. A rotating direction of the reversible roller is switchable between a first rotating direction and a second rotating direction opposite from the first rotating direction. A circumferential speed of the reversible roller is switchable between a predetermined circumferential speed and none. A rotating direction of the intermediate reversible roller is switchable between a third rotating direction and a fourth rotating direction opposite from the third rotating direction. The circumferential speed of the reversible roller in the first rotating direction is reduced to be lower than the predetermined circumferential speed while the intermediate reversible roller is rotating in the third rotating direction.