A post-processing device includes a discharge port through which a sheet is discharged, an intermediate tray, a discharge tray and an air sending part. The air sending part includes an upper air sending member, an upper switching member, a lower air sending member, a lower switching member and a controller. The upper air sending member generates a downward air flow from above the discharge port. The upper switching member is distributable the air flow generated by the upper air sending member to above the intermediate tray and to above the discharge tray. The lower air sending member generates an upward air flow from below the discharge port. The lower switching member is distributable the air flow generated by the lower air sending member to below the intermediate tray and to above the discharge tray. The controller controls the upper switching member and the lower switching member.

A device for applying coiling-tension to a slit band sheet includes: an upper structure that is disposed on the upper side of a band sheet which has been passed through a slitter line and slitted; and a lower structure that is disposed on the lower side of the band sheet and faces the upper structure vertically. In addition, an upper belt is stretched on an outer peripheral surface of the upper structure. A lower belt is stretched on an outer peripheral surface of the lower structure. The upper structure has a first reversing portion, an upper pressing portion, and a second reversing portion. The first reversing portion and the upper pressing portion are integrated with each other. A tension adjusting mechanism is installed on side surfaces of the first reversing portion and the upper pressing portion and a side surface of the second reversing portion.

An image forming apparatus comprises a main body, a conveyance path, a first external cover and a second external cover. The first cover provided in the main body to cover the conveyance path includes a blocking wall facing the conveyance path; a concave portion provided below the blocking wall and recessed toward the main body with respect to a lower end of the blocking wall; a communication portion, provided between the lower end of the blocking wall and an upper end of the concave portion, that penetrates the first external cover and faces an outer space of the image forming apparatus at a position that extends from the concave portion to the blocking wall; and an air exhaust portion provided above the blocking wall.

A medium processing apparatus includes a processing unit that performs processing on a sheet-like medium; an outer wall on which a discharge port, from which the medium processed by the processing unit is discharged, is open; a stacking portion that has a stacking surface on which the medium discharged from the discharge port is stacked; a suction unit that sucks air on the stacking surface via a suction port provided below the discharge port; and a control unit that controls a workload of the suction unit. The control unit reduces the workload of the suction unit according to an open area of the suction port which is occluded by the medium stacked on the stacking portion and is decreased.

A sheet discharge device includes a discharge conveyance path, a pair of discharge rollers, a side wall, a sheet stacking tray, a first fan, and a second fan. The discharge conveyance path communicates with a discharge port through which a sheet having passed through a fixing portion is discharged. The pair of discharge rollers convey the sheet along the discharge conveyance path and discharge the sheet from the discharge port. The side wall extends downward from the discharge port. The sheet stacking tray extends from the side wall in a sheet discharge direction in which the sheet is discharged by the pair of discharge rollers. The first fan is disposed below the discharge conveyance path and blows air toward the discharge conveyance path. The second fan is disposed above the discharge port and blows air from above the discharge port toward the sheet stacking tray.

A post-processing device includes a discharge port through which a sheet is discharged, an intermediate tray, a discharge tray and an air sending part. The air sending part includes an upper air sending member, an upper switching member, a lower air sending member, a lower switching member and a controller. The upper air sending member generates a downward air flow from above the discharge port. The upper switching member is distributable the air flow generated by the upper air sending member to above the intermediate tray and to above the discharge tray. The lower air sending member generates an upward air flow from below the discharge port. The lower switching member is distributable the air flow generated by the lower air sending member to below the intermediate tray and to above the discharge tray. The controller controls the upper switching member and the lower switching member.

A discharge unit discharges a sheet having an image thereon. A switching unit switches between stacking the sheet discharged from the discharge unit on a stacking unit or conveying the sheet from the discharge unit toward an image reading apparatus. A conveyance unit conveys the sheet conveyed via the switching unit to a reading unit. A cooling unit cools the sheet discharged from the discharge unit or cools the reading unit.

It is aimed to provide a composite sheet manufacturing device and a composite sheet manufacturing method capable of maintaining high cutting performance of a cutter by suppressing the adhesion of an adhesive of an adhesive surface to the cutter. A first sheet (42) introduced to between a cutter roller (2) and an anvil roller (3) is cut into strips (42a) while these rollers (2, 3) are rotated relative to each other, adhesive surfaces (a) of the strips (42a) are adhered onto a second sheet (43) for compounding, and at least one of a cutter (12) of the cutter roller (2) and the anvil roller (3) is cooled by a refrigerant by a cooling unit (20, 21).

An image forming apparatus includes an optional device, a casing, an image forming section and a sheet conveyor device. The optional device performs optional processing. The image forming section is located inside of the casing and forms an image on a sheet. The sheet conveyor device conveys, to the optional device, the sheet with an image formed thereon by the image forming section. The optional device and the casing are fixed to each other. The sheet conveyor device is fixed to the optional device and the casing.

An image forming apparatus includes an apparatus body, an image forming device to form an image on a recording medium, a casing to accommodate the image forming device, a sheet discharging port through which the recording medium having the image is discharged from the casing, a sheet stacker to stack the recording medium output through the sheet discharging port and opening on one side of the apparatus body and surrounded by outer walls including an outer wall having the sheet discharging port, an air guide opening disposed within a sheet passing range in a width direction of the recording medium in a sheet conveying path through which the recording medium having the image passes from the image forming device to the sheet discharging port, and an air suction fan to discharge air passing through the air guide opening to an outside of the casing.