A device for the surface treatment of a substrate including a transport device, a vacuum suction device, a corona device and a coating device, is described. The transport device is formed as a conveyor belt. The conveyor belt is formed as a vacuum suction belt of the vacuum suction device, and the conveyor belt is formed as a counter electrode of the corona device.

A sheet storage device includes a first reel, a second reel, a third reel, a shaft, a drum, a first differential mechanism and a second differential mechanism. Tips first, second and third tapes respectively unwound from the first reel, the second reel, and the third reel are fixed to the drum, and the drum winds up sheets together with the first, second and third tapes. The first differential mechanism distributes torque input from a torque source to a first path and a second path. The second differential mechanism is provided in the second path and distributes the torque that has been distributed by the first differential mechanism to a third path and a fourth path. The first reel is located in the first path, the second reel is located in the third path, and the third reel is located in the fourth path.

A method of feeding a print medium comprises receiving a print medium by a media advance system; transporting the print medium by the media advance system to a print zone wherein the transporting comprises applying a first normal force when the print medium is at a first position of the media advance system and applying a second normal force when the print medium is at a second position of the media advance system, wherein the second normal force is different from the first normal force.

Included are a feeding shaft configured to hold a printing medium, a first transporting belt, a second transporting belt, a first driving roller on which the first transporting belt is wound, a second driving roller on which the second transporting belt is wound, a first driving unit configured to drive the first driving roller, a second driving unit configured to drive the second driving roller, a winding roller on which the printing medium is wound, a first winding roller bearing, a second winding roller bearing, a first load cell configured to detect a load exerted by the printing medium on the first winding roller bearing, a second load cell configured to detect a load exerted by the printing medium on the second winding roller bearing, and a control unit configured to control the first driving unit and the second driving unit based on detection results of the load cells.

A sheet storage device includes a first reel that is disposed along a first axis and around which a first tape is wound; a second reel that is disposed along a second axis and around which a second tape is wound; a drum that is disposed along a third axis so as to wound a sheet, that is sandwiched between the first tape and the second tape at least partially overlapping each other, on an outer peripheral surface of the drum together with the first tape and the second tape; a first tape path between the first reel and the drum; a second tape path between the second reel and the drum; and a changing mechanism disposed in at least one of the first tape path or the second path, the changing mechanism changing a position of a corresponding tape to a direction parallel to the third axis.

An upper conveyor deck includes a plurality of belts each supported by an upstream end pulley and a downstream end pulley which belts are configured to be driven along a closed path having an interior such that a lower run of each of the belts travels in a downstream direction and an upper run of the each of the belt travels in an upstream direction. A first diversion pulley in the interior of at least one of the belts contacts the lower run of that belt, and a diversion guide outside the interior of the belt contacts the belt downstream from the first diversion pulley. A deflecting device at the first diversion pulley is configured to prevent scrap material from becoming pinched between the belt and the first diversion pulley.

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 tape-laying apparatus includes a material feeder configured to feed tapes, and a laying device configured for picking up and placing tapes onto a laying table. The laying device includes a transporter and a vacuum. The vacuum is connected to the transporter such that at least one tape is configured to be held on the transporter by a negative pressure generated by the vacuum. The transporter includes at least two endless transport belts, which circulate around deflection rollers. The transport belts run parallel to one another in a same transport plane.

A conveyor belt assembly (10) for transporting single sheets or stacks of a packaging material is described. It comprises at least one conveyor belt (12a) being arranged over at least two pulleys (20a-20d), wherein at least one of the pulleys (20a-20d) is adapted to drive the conveyor belt (12a) in a conveying direction (15). Furthermore, the conveyor belt assembly (10) comprises a conveying section (22) adapted for transporting the sheets or stacks and a return section (24) adapted to return the conveyor belt (12a) from an end (22b) of the conveying section (22) to a beginning (22a) of the conveying section (22). The conveying section (22) is equipped with a middle section (26), in which the conveyor belt (12a) is arranged in a substantially flat manner, and at least one transition section (28) arranged between the middle section (26) and the respective pulley (20a-20d), with the conveyor belt (12a) being arranged in the transition section (28) in a retracted position with respect to a plane (26a) defined by the middle section (26).

A conveying unit (100) of a web, or sheet, of paper, or similar products, arranged to transfer along a transfer direction the web, or sheet, of paper, having a support (41) having a lateral surface (42) provided with at least one peripheral suction groove (43). A suction belt (45) is arranged to move along a closed trajectory (46) comprising the suction portion (44). The suction belt (45) is configured to air-tightly engage the suction portion and provides at least one through hole (47) arranged to be positioned at a respective suction portion (43) in order to cause a suction effect on the web, or sheet, and to transfer it from a first point P1 to a second point P2 of a production line of paper products. It is, furthermore, provided a driving device (60) configured to move the suction belt (45) with respect to the support (41).