Abstract: The invention relates to a stacking device as well as to a method for depositing sheets on a stack. The task of the invention is to provide a stacking device that deposits sheets on a stacking unit quickly, cost effectively and reliably. The invention solves this task with a method for depositing sheets and a stacking device that contains two gripping devices for alternately gripping and depositing sheets.

Abstract: A hold down clamp for holding down a stack of sheet-like material, preferably for installation of a transportation trolley and/or in the area of a printing machine, having a holding arm extending vertically adjustable and lockable along a substantially upright guide member. The holding arm has at least one release member for releasing its locking, the release member being movable in the direction away from the stack. This allows the holding arm to be pliable upwardly in case of emergency.

Abstract: A digital printing or copying machine (1) is proposed for the one-sided or double-sided printing onto a substrate (5), using at least one toner. The machine (1) includes at least one fixation device (3) for fixing the toner image on the substrate (5). The fixation device (3) has at least one heating device (13) for melting the toner image, past which the substrate (5) can be taken. The machine (1) is distinguished by a guide device (17) for the free floating movement of the substrate (5) in the effective range of the heating device (13).

Abstract: A gripping arrangement for a stacker device or delivery tray of a printing press. At least one upper gripper arm and at least one lower gripper arm are provided, which have a first opened position and a second closed position. Sheets are located between the upper and lower gripper arms in the closed position. A first guiding device guides the gripping arrangement substantially in the vertical direction, and a second guiding device guides the gripping arrangement substantially in the horizontal direction.

Abstract: The invention relates to a stacking device as well as to a method for depositing sheets on a stack. The task of the invention is to provide a stacking device that deposits sheets on a stacking unit quickly, cost effectively and reliably. The invention solves this task with a method for depositing sheets and a stacking device that contains two gripping devices for alternately gripping and depositing sheets.

Abstract: A device for conveying sheets through a printing machine which ensures the safe transport of the sheet exactly in the prescribed transport path, at a low material expense. The device for conveying sheets through a printing machine is provided with continuous conveyor belts running over deflection rollers, between which the sheets are held by frictional forces and guided one after the other, whereby to generate the frictional forces, rollers are provided which press the conveyor belts against each other along the conveyance path. The contact surfaces of the conveyor belts with the sheet have a surface coating made of a material with a high coefficient of friction relative to the material of the sheet.

Abstract: A three-way diverter having two paper guide elements which, in the area of the fork in the paper running paths, are pivotably arranged upstream of the dividing points of the paper running paths in such a way that, in a first position, they connect the access to the central outlet and, as a result of one of the paper guide elements in each case being pivoted into a second or third position, one of the outer outlets for the paper run is opened and the other outlets are blocked. The access has a funnel-like taper in the paper running direction and, downstream of the taper of the access, there are on both sides depressions which are sufficiently large that, in the second or third position, they accommodate both leading ends of the paper guide elements such that the latter lie to one side of the paper run.

Abstract: The invention relates to a sheet delivery device (1) for flexible sheet material (2), especially paper, with at least one deflection wheel (3) which has at least one receiving slot (4) which is located essentially tangentially, a sheet feed (5) which discharges into at least one receiving slot (4) when it is in the receiving position (6), and a sheet delivery stop (7) in the area of the deflection wheel (3) which is opposite the receiving position (6), the wheel running in a recess (8) of said sheet delivery stop (7) and the latter lying in the sheet delivery position (17) at least on one side of said receiving slot (4). One such sheet delivery device will be developed such that an offset in the delivered stack (20) is easily achieved. This is done in that on one shaft (9) there are at least two deflection wheels (3) which have receiving slots (4) in identical positions and that said shaft (9) can be inclined relative to the transport direction (10) of said sheet feed (5).

Abstract: The invention relates to a device (1) for generating an offset (2) of transported flexible sheet material (3), especially sheets of paper, with a feeding and a discharging transport path section (5 and 7) and a transport path section (6) which is assigned to the offset generating means (10). These devices of the prior art often require a control, resetting of the offset generating means after each sheet of material (3) or they do not operate independently of format. The invention affords relief by the offset generating means (10) having at least two deflections (8, 9 or 8, 8′, 9, 9′) which are parallel, which work in opposite directions, and which can be moved to an angle (gamma) to the transport direction (4); this angle is measured in the plane of the feeding transport path section (5) and is not equal to 90° projected onto this plane.

Abstract: The invention concerns a device for transport of stock for a printing unit. The stock, in the form of paper or film, is taken up in different feeds (1, 2, 3). Inputs (26, 27, 28) are connected to them to introduce the stock into the stock feed path (7). The stock passes through a number of processing stations (6, 8, 11, 14, 22) along its stock feed path (7). The stock feed path (7, 13) contains a number of shunts (10, 17, 24) for the stock, with which unprinted stock passes through individual processing stations (6, 8, 11, 14, 29) or can be transported past them, can be fed to different delivery sites (18, 19) and/or already printed stock can be reintroduced to the stock feed sequence via a turning (22).

Abstract: The invention concerns a stack height determination mechanism (25) for a stack (1) consisting of flat material (2), preferably sheet paper, with at least one sensor (3) to determine stack height and a stack height control mechanism with a stack height determination mechanism (25) of this kind.