Abstract: An ink delivery device (30) for the ink supply of an inking system (20) of a printing machine (10) with ink, includes an ink reservoir (31), a drive that is connected to the ink reservoir (31) and configured such that the ink reservoir (31) can be pressurized by the drive, and a control device for controlling the drive of the ink delivery device (30), in which the drive and the control device are configured and connected with each other such that the ink delivery device (30) can be operated based on a method, in which the method includes the following steps: initiating an ink delivery process, increasing the pressure in the ink reservoir to a target operating pressure, adjusting the pressure in the ink reservoir to an adjusted operating pressure, and terminating the ink delivery process.

Abstract: A method for producing a dampening system housing, includes the steps of providing a longitudinal housing element prepared from a flat component, making available two side parts with grooves for accommodating the longitudinal housing element, inserting the longitudinal housing element in the grooves and sealing the longitudinal housing element in the grooves, as well as a correspondingly produced dampening system housing.

Abstract: An installation for preparing dampening solutions for offset printing with a device (10, 62, 72) for preparing a dampening solution and a device (40, 60, 70 for feeding one or more basic liquid materials (42) for preparing the dampening solution into the device (10, 62, 72) for preparing the dampening solution, in which the feeding device (40, 60, 70) is provided for cooling the basic material or materials (42) or a mixture thereof, which is to be supplied.

Abstract: The invention involves a printing press comprising a spray dampening unit 2 having a spray nozzle cleaning device 3, a spray dampening unit 2 having a spray nozzle cleaning device 3 and a spray nozzle bar 22 having a spray nozzle cleaning device 3. Said spray nozzle cleaning device 3, respectively, was produced with fluid nozzles 34 using a fluid line system 31, the use of a fluid line system with fluid nozzles to produce such a spray nozzle cleaning device and a procedure to clean the spray nozzles 23 of a spray dampening unit by means of such a spray nozzle cleaning device 3. Said spray nozzle cleaning device has been or can be assembled in a spray dampening unit, comprising a fluid line system 31 having several fluid nozzles 34 by means of which a cleaning fluid can be sprayed on the spray nozzles 23.

Abstract: An arrangement on a printing machine, includes at least one low-temperature (NT), medium-temperature (MT) and high-temperature (HT) temperature control point, which are arranged in a low-temperature (NT), a medium-temperature (MT), and at least one high-temperature (HT) zone of a printing machine and are designed such that the NT zone can be controlled to a low temperature by the NT temperature control point, the MT zone to a medium temperature by the MT temperature control point, and the HT zone to a high temperature by the HT temperature control point, the low temperature being lower than the medium temperature, and the medium temperature being lower than the high temperature. The arrangement includes a low-temperature (NT) temperature control device and a high-temperature (HT) temperature control device. The temperature at the MT temperature control point can be controlled by both the NT and the HT temperature control device.

Abstract: An ink delivery device (30) for the ink supply of an inking system (20) of a printing machine (10) with ink, includes an ink reservoir (31), a drive that is connected to the ink reservoir (31) and configured such that the ink reservoir (31) can be pressurized by the drive, and a control device for controlling the drive of the ink delivery device (30), in which the drive and the control device are configured and connected with each other such that the ink delivery device (30) can be operated based on a method, in which the method includes the following steps: initiating an ink delivery process, increasing the pressure in the ink reservoir to a target operating pressure, adjusting the pressure in the ink reservoir to an adjusted operating pressure, and terminating the ink delivery process.

Abstract: A dampening solution circuit for a printing machine, includes a dampening unit, a dampening solution main reservoir, a dampening solution supply for feeding the dampening solution to the dampening unit from the dampening solution main reservoir and a dampening solution return for returning the dampening solution from the dampening unit into the dampening solution supply and a cleaning branch with a dampening solution cleaning apparatus is provided in the region of the dampening solution return, which cleaning branch is configured in such a way that during the operation of the dampening solution circuit a first dampening solution partial flow from the dampening solution main flow can be passed through the dampening solution cleaning apparatus, and the cleaning branch is connected in such a manner that the dampening solution cleaned in the dampening solution cleaning apparatus can be returned into the dampening solution supply.

Abstract: Valve arrangement for spray damping units of printing machines with at least one valve for controlling a flow of liquid, in which the valve includes a housing with an inlet and outlet, into which a valve body arrangement is inserted with the help of a fast-action closure.

Abstract: A cooling device for printing machines, includes a refrigerating circuit (10) and a cooling water circuit (12), in which the refrigerating circuit (10)-is provided with a compressor (14) having a compressor drive and a regulator (34). The compressor is configured such that the compressor output of the compressor (14) can be controlled via the regulator independently of the rotational speed of the compressor drive.

Abstract: A method for producing a dampening system housing, includes the steps of providing a longitudinal housing element prepared from a flat component, making available two side parts with grooves for accommodating the longitudinal housing element, inserting the longitudinal housing element in the grooves and sealing the longitudinal housing element in the grooves, as well as a correspondingly produced dampening system housing.

Abstract: A dampening device of a spray-dampening unit includes a dampening-unit housing, with a positioning element and a spray bar, the positioning element having a mounting region and an abutment region, and being mounted exchangeably on the dampening-unit housing via the mounting region, and the abutment region configured such that the spray bar can be brought to abut against the abutment region, so that a defined position of the spray bar in relation to the dampening-unit housing can be ensured, and also to a method for positioning a spray bar in a dampening device of this type, including the steps of providing a set of positioning elements which each have a mounting region and an abutment region, the set having different positioning elements, selecting a positioning element suitable for a desired position of the spray bar in the dampening-unit housing from the set, and mounting the selected positioning elements.

Abstract: The invention concerns with a cleaning equipment (1) for cleaning at least one guide roll (2) in a rotary printing press that feeds a paper web (3), which has at least one cleaning brush (4) in the range of the guide roll (2) that should be cleaned, which is arranged coaxially to this cleaning equipment (1) in the expansion space, defined by the paper web (3), which possesses a bristle field with helically revolving brushes (5), and the brushes are brought with their bristle field to the guide roll (2) with the purpose of cleaning at least in some areas, during the cleaning process; thereby the cleaning equipment (4) has at least one dirt discharge unit (6), through which the dirt particles or similar could be removed from the guide roll (2) by the means of at least one cleaning brush (4).

Abstract: A method for cleaning a process fluid for offset printing by transverse flow filtration, for which the process fluid, which is to be cleaned, flows over the surface (28) of a transverse flow filtration membrane (18), the flow being produced at least partly by a movement of the transverse flow filtration membrane (18) through the process fluid.

Abstract: An installation for preparing dampening solutions for offset printing with a device (10, 62, 72) for preparing a dampening solution and a device (40, 60, 70 for feeding one or more basic liquid materials (42) for preparing the dampening solution into the device (10, 62, 72) for preparing the dampening solution, in which the feeding device (40, 60, 70) is provided for cooling the basic material or materials (42) or a mixture thereof, which is to be supplied.

Abstract: A device for supplying ink to a printing press, includes a piston pump and a hydraulic or pneumatic cylinder driving mechanism which drives the piston rod of the piston pump and the cylinder driving mechanism includes several cylinder chambers, which are separated from one another and each of which contains a driving piston, which can be acted upon with pressure.

Abstract: A method for cleaning the fountain solution of a printing press with an automatically emptying separator (16), separates the dirt particles and oil residues from fountain solution and supplies them, as a mixture of dirt and fountain solution, to a dirt and fountain solution container (24) and passes the remaining fountain solution into a fountain solution storage tank (20). The dirt and fountain solution mixture in the dirt and fountain solution mixture container (24) is caused to settle in layers and the layer, containing the fountain solution, is transferred by an overflow (26) in to the fountain solution storage tank (20).

Abstract: Valve arrangement for spray damping units of printing machines with at least one valve for controlling a flow of liquid, in which the valve includes a housing with an inlet and outlet, into which a valve body arrangement is inserted with the help of a fast-action closure.

Abstract: A tempering device for printing presses, includes a compression refrigerating plant with a condenser and an evaporator, in which a coolant circulates in a compression refrigerating path, and a free cooling path, in which a coolant circulates. A process water path circulates a coolant for either printing rollers or a fountain solution for offset printing. A heat exchanger arrangement cools the process water path with the help of the compression refrigerating plant and/or the free cooling path. The heat exchanger arrangement includes a three-media heat exchanger, in which heat is exchanged between the process water path and the compression refrigerating plant as well as the free cooling path.

Abstract: Method for removing of organic residues from finely structured surfaces, characterized in that the residues are incinerated by means of ozone.

Abstract: Method for removing of organic residues from finely structured surfaces, in which the residues are incinerated by ozone.