Abstract: The invention relates to a sealing element for an ink chamber of a rotary printing press, wherein the sealing element has a sealing surface that rests against a roller body during operation of the rotary printing press. In order to reduce wear on the sealing element, the sealing surface has at least one flow outlet opening, at which an overpressure of a fluid may be built up during operation of the rotary printing press, in such a way that the fluid between the sealing surface and roller body forms a sealing flow film.

Abstract: The invention relates to a sealing element for an ink chamber of a rotary printing press, wherein the sealing element has a sealing surface that rests against a roller body during operation of the rotary printing press. In order to reduce wear on the sealing element, the sealing surface has at least one flow outlet opening, at which an overpressure of a fluid may be built up during operation of the rotary printing press, in such a way that the fluid between the sealing surface and roller body forms a sealing flow film.

Abstract: The invention relates to an ink circuit of an inking unit of a flexographic or gravure printing press. In order to reduce the changeover costs in relation to the ink circuit of an inking unit of a flexographic or gravure printing press, an ink circuit of an inking unit of a flexographic or gravure printing press is provided, wherein the inking unit has an ink inflow for providing ink which is ready for printing and an ink outflow for transporting away excess ink, wherein the ink inflow is operated by an inflow pump and the ink outflow is operated by an outflow pump, and wherein the outflow pump is a pump which is driven by an electric motor.

Abstract: The invention relates to a mixing device for mixing a fluid in a container, in particular of a fluid system, comprising a fluid supply and at least one outlet arm with an outlet opening, the fluid supply being connected to the at least one outlet arm in a fluid-communicating fashion. According to the invention, the outlet opening, for an outlet of the fluid, is oriented towards an outlet direction in order to set the fluid in the container rotating at least in sections thereof.

Abstract: The invention relates to a drying device (10) for a drying between inking units of a printing machine (1), with which a substrate (2) can be transported via rotating cylinders (3.1, 3.2, 3.3) and is printable with a coloring agent (4), with an air supply unit (11) for supplying of air (5) in direction of the substrate (2) in order to effect a drying of the coloring agent (4), a suction unit (12) for discharging the air (5), a control unit (20), which controls and/or regulates the air supply unit (11) in dependence of the operating parameters (B) in a way that altering drying areas (13.1, 13.2, 13.3) are adjustable at the substrate (2).

Abstract: A device for setting at least one operating parameter of ink for a printing process of a rotary printing press having an inking system which has a doctor blade device with a doctor blade chamber containing the ink for the printing process, and an ink reservoir from which ink can be supplied to the doctor blade chamber, includes a supply system which allows ink to be supplied inside the inking system. The supply system can be switched to a setting mode (I) or to a production mode (II), the operating parameter being automatically set in the setting mode (I) and no ink being supplied to the doctor blade chamber, and the supply system supplying ink to the doctor blade chamber in the production mode (II).

Abstract: A system for measuring the viscosity of printing ink during a printing and ink correction process includes a printing press having an ink supply system, and an optical measuring device for measuring actual optical values of light that has interacted with at least parts of the printing picture. The printing press has an ink mass determination device to determine the weight of at least parts of the ink located in the ink supply system, and a control and evaluation device to receive measured values from the optical measuring device and from the ink mass determination device. The control and evaluation device determines an optical deviation, and, based on the optical deviation and the values from the weighing devices, an amount of corrective ink that is to be fed to the printing press in order to approximate the actual optical values to optical reference values.

Abstract: The invention relates to a drying device (10) for a drying between inking units of a printing machine (1), with which a substrate (2) can be transported via rotating cylinders (3.1, 3.2, 3.3) and is printable with a colouring agent (4), with an air supply unit (11) for supplying of air (5) in direction of the substrate (2) in order to effect a drying of the colouring agent (4), a suction unit (12) for discharging the air (5), a control unit (20), which controls and/or regulates the air supply unit (11) in dependence of the operating parameters (B) in a way that altering drying areas (13.1, 13.2, 13.3) are adjustable at the substrate (2).

Abstract: The invention relates to a device for setting at least one operating parameter of ink for a printing process of a rotary printing press, comprising an inking system which has a doctor blade device with a doctor blade chamber containing the ink for the printing process, and an ink reservoir from which ink can be supplied to the doctor blade chamber, and further comprising a supply system which allows ink to be supplied inside the inking system. According to the invention, the supply system is designed such that the supply system can be switched to a setting mode or to a production mode, the operating parameter being automatically set in the setting mode and no ink being supplied to the doctor blade chamber, and the supply system supplying ink to the doctor blade chamber in the production mode.

Abstract: The invention relates to a mixing device for mixing a fluid in a container, in particular of a fluid system, comprising a fluid supply and at least one outlet arm with an outlet opening, the fluid supply being connected to the at least one outlet arm in a fluid-communicating fashion. According to the invention, the outlet opening, for an outlet of the fluid, is oriented towards an outlet direction in order to set the fluid in the container rotating at least in sections thereof.

Abstract: A system for measuring the viscosity of printing ink during a printing and ink correction process includes a printing press having an ink supply system, and an optical measuring device for measuring actual optical values of light that has interacted with at least parts of the printing picture. The printing press has an ink mass determination device to determine the weight of at least parts of the ink located in the ink supply system, and a control and evaluation device to receive measured values from the optical measuring device and from the ink mass determination device. The control and evaluation device determines an optical deviation, and, based on the optical deviation and the values from the weighing devices, an amount of corrective ink that is to be fed to the printing press in order to approximate the actual optical values to optical reference values.

Abstract: A System and method for measuring the viscosity of printing ink during the printing and ink correction process is presented.

Abstract: A System and method for measuring the viscosity of printing ink during the printing and ink correction process is presented.

Abstract: A method of operating a printing press includes transferring ink from an inlet point to a printing substrate, and measuring actual optical values of light, in which the actual optical values are from light of selected wavelength ranges and in which the light has interacted with at least parts of the printed image. The method includes providing a control and evaluation device with measured values from an optical measuring device and with measured values from an ink mass determination device so as to determine an optical deviation of actual optical values from optical reference values, and determining an amount of corrective ink that is to be fed to the printing press in order to approximate the actual optical values to the optical reference values.

Abstract: A System and method for measuring the viscosity of printing ink during the printing and ink correction process is presented.

Abstract: The invention presents a method for controlling the composition of an ink mixture (11, 31) for at least one printing press (2), in which actual optical values (I) of light (7) are obtained, whereas the light (7) has interacted at least with parts of the printing picture, which is generated by the printing press (2) on the printing substrate (6) using an ink mixture which is provided by an ink supply system, and in which, due to the deviation of the actual optical value from optical reference values (S), a corrective ink mixture (31) is created, which is added to the ink mixture (11) which is provided by said ink supply system and which changes the ratio of the amounts of ink pigments therein. The ink mixtures (11, 31) used in the method are provided by different ink mixing devices (16, 24).

Abstract: The invention relates to a system and a method for controlling the composition of an ink mixture for at least one printing press, in which actual optical value of light are obtained, whereat the light has interacted at least with parts of the printing picture, which is generated by the printing press on the printing substrate using an ink mixture which is provided by an ink supply system and in which, due to the deviation of the actual optical value from optical reference values, a corrective ink mixture is created, which is added to the ink mixture which is provided by the ink supply system and which changes the ratio of the amounts of ink pigments therein, whereby first actual optical values are obtained inline, that is at running and just printed printing substrate, wherein these actual optical values are densitometrical values.

Abstract: An image processing system for use in a sheet-fed offset printing press inspects image data in a variable manner. and provides remediation in the event of a malfunction in order to reduce misprints, thus reducing waste and associated cost inefficiency.

Abstract: A control for an excimer emitter, particularly for the dryer in a printing press, comprises an HF generator that is connected on the output side to an excimer emitter. To enable a higher UV intensity of radiation, the HF generator (1) is provided in the form of a tube-type generator with a feedback: the output of this HF generator (1) is connected to the input of a working circuit (3) comprising a capacitor (C) and an inductive resistor (L), and; the excimer emitter (5) is connected to the output of the working circuit (3).

Abstract: A printing press dryer having an excimer radiant heater adapted for high energy output and compact mounting within the printing press. The heater includes a housing (1) within which a plurality of radiant tubes (2,3) are arranged in parallel relation to each other, and the radiant tubes (2,2) each have a respective adjacent reflector section (4,5) for directing a predetermined radiation distribution on passing printed sheet material.