Provided is an aligner capable of aligning a sheet during transport in a direction orthogonal to a transport direction. The aligner includes: a transport path; a linear-motion transport unit that generates a drive force in a transport direction along the transport path to a sheet on the transport path; a left-skew transport unit that is disposed in a left direction with respect to the transport direction of the linear-motion transport unit and generates a drive force in a left-oblique direction inclined in the left direction to the sheet on the transport path; and a right-skew transport unit that is disposed in a right direction with respect to the transport direction of the linear-motion transport unit and generates a drive force in a right-oblique direction inclined in the right direction to the sheet on the transport path.

A sheet feeding apparatus includes a tray on which a sheet is to be placed, a feeding roller, a separating portion that forms a separation nip to separate sheets, a rotating member provided between the feeding position and the separation nip in a sheet conveying direction, a first detecting sensor, a second detecting sensor, a driving source, and a control portion. The rotating member rotates by being pushed by a leading end of the sheet. The control portion detects a position of a trailing end of a preceding sheet separated by the separating portion by using the second detecting sensor, and detects presence or absence of a subsequent sheet placed on the tray by using the first detecting sensor. Based on detection results of the first detecting sensor and second detecting sensor, the control portion controls the driving source such that the feeding roller starts to feed the subsequent sheet.

A paper folding device that folds a planar paper sheet while conveying the paper sheet along a paper sheet conveyance surface includes a pair of first conveyance rollers disposed on an upstream side in a paper sheet conveyance direction, a pair of second conveyance rollers disposed on a downstream side in the paper sheet conveyance direction, a switching gate plate installed on the paper sheet conveyance surface between both pairs of the rollers, a folding plate disposed above the switching gate plate, and a control unit that controls an operation of an entire device.

A sheet feeding apparatus includes a sheet feeding roller including a core portion to rotatably support the feeding roller on a feeding roller shaft and a roller portion provided on an outer periphery of the core portion, with the core portion including an engaging mechanism to engage with the feeding roller shaft to restrict movement of the feeding roller in an axial direction of the feeding roller shaft. The core portion also includes a protrusion extending in the axial direction and located on an opposite side of the feeding roller shaft from the engaging mechanism. An end portion of the protrusion is positioned at downstream side of a tip portion of the feeding roller shaft in a removing direction of the feeding roller from the feeding roller shaft.

A conveyor device for conveying a single face corrugated web on a bridge is disclosed. The conveyor device includes a lower guide roller, around which the single face corrugated web is guided. The conveyor device further includes an upper pinching and conveyance nip formed by a pair of nip members in pressure contact with one another. At least one of the nip members is motor-driven. The pinching and conveyance nip is configured to pull the single face corrugated web upwards from the lower guide roller.

A feeding roller structure includes a fastening frame, a transmission component, a transmission roller and a floating coupler. The transmission component is assembled in the fastening frame. The transmission component includes a drive shaft mounted on two sides of the fastening frame. The transmission roller is concentrically arranged around the drive shaft. The floating coupler is mounted to the fastening frame. The floating coupler is coupled between the drive shaft and the transmission roller. Two opposite ends of the floating coupler are adjacent to and spaced from the two sides of the fastening frame to form two gaps. Each gap is formed between one end of the floating coupler and one side of the fastening frame. The two gaps limit an angular displacement of the floating coupler.

An image-forming apparatus for forming an image on a sheet includes an image-forming unit that forms the image on the sheet, and a conveying unit that conveys the sheet on which the image is formed by the image-forming unit. The conveying unit includes a pair of first rollers that discharges the sheet to the outside of the image-forming apparatus and a pair of second rollers that conveys the sheet in a direction in which the sheet is discharged to the outside of the image-forming apparatus and that subsequently switches a conveyance direction of the sheet to an opposite direction to convey the sheet again to the image-forming unit. The pair of the first rollers and the pair of the second rollers partially overlap when viewed in a width direction of the sheet that is perpendicular to the conveyance direction of the sheet.

A sheet feeder includes a frame, a roller holder, and a holder stopper. The roller holder includes a feed roller for feeding a sheet. The roller holder is detachably attachable to the frame. The holder stopper is configured to move between a restricting position and a non-restricting position. In a case where the holder stopper is located at the restricting position, the holder stopper restricts the roller holder from moving from an attached position at which the roller holder is fixed to the frame. In a case where the holder stopper is located at the non-restricting position, the holder stopper allows the roller holder to move relative to the frame.

A feeding roller structure includes a fastening frame, a transmission component, a transmission roller and a floating coupler. The transmission component is assembled in the fastening frame. The transmission component includes a drive shaft transversely pivoted to two sides of the fastening frame. The transmission roller is concentrically arranged around the drive shaft. The floating coupler is mounted to the fastening frame. The floating coupler is coupled between the drive shaft and the transmission roller. Two opposite ends of the floating coupler are adjacent to and spaced from the two sides of the fastening frame to form two gaps. Each gap is formed between one end of the floating coupler and one side of the fastening frame. The two gaps limit an angular displacement of the floating coupler.

A dispenser for dispensing sheet product is provided. The dispenser includes a housing with an outlet through which sheet product is dispensed. A knife drum is rotatable with respect to the housing. A knife is movable between a retracted position within the knife drum and an extended position where the knife protrudes outside of the knife drum to cut the sheet product. A cam follower surface is fixed with respect to the housing. A cam follower is attached to the knife and operable to engage the cam follower surface and travel therealong to transition the knife between the retracted position and the extended position. A spring assembly biases the knife drum during rotation toward a predetermined position. The spring assembly comprises a first spring and a second spring. The spring assembly is attached at a single mount position that is fixed with respect to the housing.