A sheet feeding apparatus includes a support portion; a feed unit; an air blowing unit including an air blowing portion, a first air outlet, and a second air outlet; and a control unit, wherein the first air outlet is disposed to blow the air in a case where the sheet is a first sheet or a second sheet shorter than the first sheet, wherein the second air outlet is disposed to blow the air in a case where the sheet is the first sheet, and wherein in a case where the sheet is the first sheet, the control unit controls the amount of fan airflow to a first airflow, whereas in a case where the sheet is the second sheet, the control unit controls the amount of the fan airflow to a second airflow larger than the first airflow.

Examples include a machine assembly for conveying sheet-format substrates, including a first belt conveyor and a second belt conveyor. These belt conveyors each have a continuously circulating transport belt and are arranged one after another in the transport direction of the substrates conveyed on the respective transport belt. The substrate to be transferred from the first belt conveyor to the second belt conveyor is lifted off the transport belt of the first belt conveyor by means of an air current generated by a lifting nozzle and an opposing air current generated by a counter-nozzle. The substrate to be transferred remains fixed until its transfer by the vacuum pressure generated by a suction chamber of the first belt conveyor. This suction chamber fixing the substrate is arranged close to the lifting region. Examples also relate to a printing machine comprising this machine assembly.

A banknote transport system 10 includes: an air blowing tube 100 that forms an air flow path 101; a moving body 200 that travels inside the air blowing tube while receiving an air flow within the air blowing tube; a transport path 401 (a transport tube 400) having at least a portion arranged along the air blowing tube to be adjacent to the air blowing tube; and a transport body 500 configured to be able to retain a banknote and traveling inside the transport path. The moving body includes a moving body magnet 213, and the transport body includes a transport body magnet 523. The banknote transport system moves the transport body in conjunction with movement of the moving body receiving the air flow due to attraction and/or repulsion based on a magnetic force applied between the moving body magnet and the transport body magnet.

A sheet transport assembly is provided for transporting a sheet along a process unit configured for applying a process to the sheet. The sheet transport assembly includes: a conveying unit including a transport belt and a deflection element. The transport belt is configured for advancing the sheet in a transport direction along the process unit to the deflection element, the sheet being placed with a contact side on the belt and a process side towards the process unit. The deflection element is arranged in contact with the transport belt to deflect the transport belt downstream in the transport direction relative to the process unit. The sheet transport assembly further includes a separating unit for separating the sheet from the transport belt. The separating unit is connected to an air supply source. The separating unit includes a restrain blowing device arranged for directing a restrain air flow onto the process side of the sheet in a restrain area for urging the sheet towards the transport belt proximate to the deflection element. The separating unit further includes a lifting blowing device arranged for directing a lifting air flow onto the contact side of the sheet in a lifting area for lifting the sheet from the transport belt. The lifting area is arranged extending only over a middle portion of a width of the sheet, the width being a dimension of the sheet in a lateral direction perpendicular to the transport direction.

Examples include a machine assembly for conveying sheet-format substrates, including a first belt conveyor and a second belt conveyor. These belt conveyors each have a continuously circulating transport belt and are arranged one after another in the transport direction of the substrates conveyed on the respective transport belt. The substrate to be transferred from the first belt conveyor to the second belt conveyor is lifted off the transport belt of the first belt conveyor by means of an air current generated by a lifting nozzle and an opposing air current generated by a counter-nozzle. The substrate to be transferred remains fixed until its transfer by the vacuum pressure generated by a suction chamber of the first belt conveyor. This suction chamber fixing the substrate is arranged close to the lifting region. Examples also relate to a printing machine comprising this machine assembly.

A sheet stacking apparatus includes a discharging portion including a nip portion nipping and conveying a sheet, a stacking portion on which the sheet discharged by the discharging portion is stacked, an air blowing unit configured to blow air toward a lower face of the sheet being discharged by the discharging portion, and an air volume control portion configured to control the air blowing unit such that a volume of the air blown by the air blowing unit is switched from a first air volume to a second air volume which is smaller than the first air volume while the nip portion of the discharging portion is nipping and conveying the sheet to set the volume of the air to the second air volume in a case where a trailing end of the sheet discharged by the discharging portion passes through the nip portion.

A sheet discharging device includes a shift tray 202 on which a sheet P1 is stacked, a discharging roller 6 that discharges a sheet P2 onto the shift tray 202, a blowing device 230 that sends air to a lower surface of the sheet P2 discharged by the discharging roller 6, a blocking member 231 that blocks air sent to the lower surface of the sheet P2 from a blowing port 230-2 of the blowing device 230, and a control unit that controls the blocking amount of the blocking member 231. The blocking amount is determined based upon sheet information including sheet-type information, sheet-size information, and sheet-thickness information, for example.

A buckle folding unit for sheets includes a buckle plate, three rollers that form a transport roller pair and a folding roller pair, and a blown-air nozzle for guiding the sheets. The at least one blown-air nozzle emits a blown-air jet in a direction radial to a common roller of the transport roller pair and the folding roller pair. The air jet places the sheet against the surface of the common roller and guides it into a nip of the folding roller pair in a defined way, advantageously resulting in an improved quality of the fold. A sheet-fed folding machine including a buckle folding unit is also provided.

An assembly for entraining a cut end of a web in a fluid flow, the assembly comprising an arrangement for delivering a fluid flow proximal to an entrainment region where a web is cut. The assembly further has an arrangement for guiding the fluid flow and the entrained end of the web from the web entrainment region to a web delivery region.

A postprocessing device includes a processing tray, a sheet processor, an air blower, an inlet roller pair, and a drive controller. The air blower forms an air layer between an upper face of a first recording sheet already placed on a loading surface of the processing tray, and a lower face of a second recording sheet to be newly placed on the processing tray, by sending air along a transport direction of the recording sheet, from an upstream side in the transport direction toward the loading surface. The drive controller performs an air sending operation, by causing the air blower to send air along the transport direction, before a second recording sheet contacts the upper face of the first recording sheet, and stop sending air before a trailing edge of the second recording sheet in the transport direction passes a nip region defined by the inlet roller pair.