Abstract: Marking device for controlled application of charge carriers to a substrate includes a charge carrier source for generating the charge carriers, a voltage source having a first pole and a second pole connected to the charge carrier source and forming therewith a current circuit wherein a control device is located, the voltage source having a third pole for generating a predeterminable electrical potential on the substrate, so that the charge carriers are applicable thereat by corresponding triggering of the control device, the control device being assigned to at least one of the first and the second poles and being located at approximately 0-volt potential.

Abstract: Sheets of defined format lengths are printed in a sheet-fed rotary printing press with a plurality of printing units. Each of the printing units includes an impression cylinder and a counter-pressure cylinder. The two cylinders define a printing nip and the printing units are disposed such that a sheet travels through the printing nips in succession. The impression cylinders have a circumference which is no longer, and preferably shorter, than a shortest format length of the sheet. The impression cylinders are disposed such that mutually adjacent printing nips of adjacent printing units are spaced at a distance which is shorter than the shortest format length to be printed. The impression cylinders have a circumferential surface carrying a subject or motif to be printed. The images printed on printing material therefrom have an image spacing between one another. The circumference of the impression cylinder is smaller than the sum of the image length and the length of the image spacing.

Abstract: Machine for producing three-dimensional structures on a substrate having at least two individual aggregate components, includes a machine frame whereon the aggregate components are mounted at predetermined relative positions, the machine frame being of one-piece light-weight construction and having fitting devices for the individual aggregate components, the fitting devices being formed at the predetermined relative positions on the machine frame.

Abstract: A sheet-fed printing press includes a plurality of printing units disposed along a sheet-transport path. A transport apparatus (3, 33, 40, 50, 66, 78) is disposed along the sheet-transport path. The sheets are transported through the printing units along the sheet-transport path and, after recto-printing, they are returned along a return-transport path which extends essentially in an opposite direction to the sheet-transport path. The printing press is thus enabled to print recto-and-verso while having a very short structural length.

Abstract: Method for transporting/handling sheets along at least one transport/handling segment in a machine includes supplying sheets to and removing sheets from the machine, the transport/handling segment having a period length for successive sheets which is dependent upon the format length of the respective sheets.

Abstract: Method for supplying a printing unit of a printing press with ink which is solid at normal temperature includes supplying the printing unit with ink in the form of solid bodies, and melting the solid ink bodies in the printing unit and applying the ink in a molten state to a cylinder of the printing unit.

Abstract: A method of developing an electrostatic latent image produced on a surface of a movable intermediate carrier by electrically-charged dielectric color particles which are transported through a gap between the surface of the intermediate carrier and a surface of a developing device includes loosely filling most of the gap with color particles, and successively producing, along the transport path of the color particles through the gap, the following voltage differences between the surface of the developing device and non-image regions on the surface of the intermediate carrier: a first voltage difference substantially equal to zero, so that the color particles are not electrostatically attracted or repelled, in substance, by the surface of the developing device and by the non-image regions, respectively; a second voltage difference providing an electric field between the surface of the developing device and the non-image regions, the color particles in the non-image regions being completely separated from the su

Abstract: A printing press has a plurality of in-line printing units in which substrates are transported along a rectilinear transport path. The printing units include several recto printing units and several verso printing units disposed along the transport path. A transport system, which transports the substrates through the printing units along the straight transport path, includes a first transport apparatus through the recto printing units, and a second transport apparatus through the verso printing units. A feeder assembly feeds the substrates to be printed from a feeder pile to the transport system. The feed by the feeder also follows a straight path which is coplanar with the path through the printing units. It is thus possible to print not only bendable substrates, but also rigid and stiff substrates such as carton, plastic, sheet metal, glass, and the like. The system further includes a turning apparatus for turning the substrates between the recto printing units and the verso printing units.

Abstract: A device for holding substrates on a printing-press transport belt successively transporting the substrates closely past an impression cylinder includes at least one stripping device disposed in an exit part of a nip between the impression cylinder and the transport belt, the at least one stripping device being movable in synchronism with a printing-press cycle towards and away from the impression cylinder; and a method of operating the device.

Abstract: Transfer cylinder with an electromotive drive unit includes a common bearing for a rotor of the electromotive drive unit and for the transfer cylinder, the bearing being disposed in a unit of a printing press supporting the drive unit and the transfer cylinder.

Abstract: The invention relates to a sheet-fed rotary printing machine comprising sheet-transfer drums disposed between the printing units. Sheet-guiding plates are assigned to the sheet-transfer drums, and the sheet-guiding plates extend over the length of a respective sheet-transfer drum. The sheet-guiding plates are disposed so that measurements may be taken on the printed sheet being moved.

Abstract: Reprintable impression cylinder for a printing press, the impression cylinder having an outer cylindrical surface wettable, during printing, with a heated printing ink which is transferrable to printing material or stock, includes two superimposed layers formed on the outer cylindrical surface of the impression cylinder, including an outer layer of relatively lower heat capacity and an inner layer of relatively higher heat capacity.

Abstract: Sheet delivery device in a printing press having stops and sheet pushers or sliders for forming a sheet pile on a changeable sheet-pile carrier, and a conveyor system for transporting sheets successively to a location above the sheet pile includes a stabilizing device actuatable, upon the occurrence of a pile change, for stabilizing the sheets forming the sheet pile, the stabilizing device forming a releasable adhesive connection of sheet edges at least at one side of the pile and in an upper region of the pile.

Abstract: Dampening solution is supplied to a printing form of an offset printing press. The quantity of dampening solution is alternatingly varied about a preselectable mean value between a minimum value and a maximum value. The variation is independent of possible fluctuations due to deviations in the controlled supply of dampening solution. The mean, minimum and maximum values are defined from an ink distribution on a printed subject.

Abstract: Housing for an electrical system for controlling operations includes a housing wall, at least one connection arrangement provided at the housing wall for connecting a control circuit disposed inside the housing to circuits located outside the housing, and a base forming a unitary body with the housing, the connection arrangement including contact members forming a non-detachable part of the housing wall, the control circuit disposed inside the housing being directly connected to the contact members.

Abstract: A device designed as a magazine is disclosed for carrying away and/or supplying printing plates from and to a plate cylinder of a printing machine, in particular to ensure the automatic exchange of printing plates with a plate removing and a plate supplying arrangement. At least one cartridge for the printing plates is removably associated with the magazine. A corresponding process is also disclosed.

Abstract: Method of automatically controlling and regulating a chronological sequence of operations of a printing press includes initializing in RAM of a computer a list entered from ROM and having a table of all press operation data necessary for printing, including an assignment of times for actuating actuators to position data of the printing carrier, modifying the data entered into the list in accordance with data regarding the machine status, and with respect to process values relative to a position of the printing carrier at which a performance of an operation should start, a first press operation to be performed being defined and, included in the data for every operation is the operation to be performed preceding and subsequent thereto and, upon reaching a starting position of each actual operation to be performed in accordance with actual data from the speed sensor, with the data about the machine status and with the process values, and redetermining in the computer and entering into the list the data for the p

Abstract: Method of controlling a start-up of paper travel and printing, respectively, in a printing press having an electrically operated dryer for printing products printed with ink curable by drying, the dryer being preheatable over a limited time period, includes switching-on a drive for effecting paper travel and printing, respectively, after the dryer, which has been switched on beforehand, has reached a limit value representing optimum operating conditions.

Abstract: A device designed as a magazine is disclosed for supplying printing plates to a plate cylinder of a printing machine, in particular to ensure the automatic exchange of printing plates by means of a plate supply arrangement. The plate supply arrangement (16) has several distributed (second) holding means (55) for the printing plates (9) that can be successively activated.

Abstract: A printing press includes a plurality of mutually mechanically decoupled printing-unit groups each having at least one individual printing unit. A drive for the printing press includes drive motors each being associated with a respective one of the printing-unit groups. Devices are each associated with a respective one of the printing-unit groups for rotational-speed and/or angle-of-rotation determination. An angle feedback control device dimensions a permissible angle-of-rotation deviation of the printing-unit groups from a preselected angle setpoint value in such a way that the deviation is minimal at least in an angle-of-rotation position in which sheet transfer takes place.