Abstract: A device cures a UV-curable fluid, such as offset or inkjet printing ink, on a substrate by way of an emitter. The emitter includes at least two flash lamps which are disposed in a row. This provides a cost-efficient way of evenly and homogeneously curing UV-curable printing fluids at low environmental impact. There is also described a printing machine with a device for curing UV-curable printing ink.

Abstract: A device cures a UV-curable fluid, such as offset or inkjet printing ink, on a substrate by way of an emitter. The emitter includes at least two flash lamps which are disposed in a row. This provides a cost-efficient way of evenly and homogeneously curing UV-curable printing fluids at low environmental impact. There is also described a printing machine with a device for curing UV-curable printing ink.

Abstract: A method for printing on the surface of an object uses a print head generating ink drops to print at least a first swath and subsequently a second swath of ink onto the surface in such a way that the swaths are mutually adjacent and overlap in a strip. The first and second swaths are printed as solid areas and the swaths are XY stitched in the strip. In the strip, at least one of the two swaths is additionally stitched by using a function of an ink amount profile in a Y direction. High-quality or even highest-quality printed products can therefore be produced, in particular avoiding defects that are visible to the human eye in a region of overlap or a strip between swaths that are printed next to one another.

Abstract: A method prints and dries a substrate where ink containing water and pigment is printed onto the substrate in an inkjet printing process. The substrate has an initial moisture content and absorbs at least water of the ink, causing the moisture content of the substrate to rise. Radiation selectively acting on the water molecules is applied in a first drying step and then radiation selectively acting on the pigment is applied in a second drying step in such a way that after completion of the two drying steps, the water of the applied ink has essentially completely evaporated and the substrate has essentially reattained its initial moisture content. In this manner optimum drying of substrates to which ink has been applied occurs.

Abstract: A method prints and dries a substrate where ink containing water and pigment is printed onto the substrate in an inkjet printing process. The substrate has an initial moisture content and absorbs at least water of the ink, causing the moisture content of the substrate to rise. Radiation selectively acting on the water molecules is applied in a first drying step and then radiation selectively acting on the pigment is applied in a second drying step in such a way that after completion of the two drying steps, the water of the applied ink has essentially completely evaporated and the substrate has essentially reattained its initial moisture content. In this manner optimum drying of substrates to which ink has been applied occurs.

Abstract: A method for printing on the surface of an object uses a print head generating ink drops to print at least a first swath and subsequently a second swath of ink onto the surface in such a way that the swaths are mutually adjacent and overlap in a strip. The first and second swaths are printed as solid areas and the swaths are XY stitched in the strip. In the strip, at least one of the two swaths is additionally stitched by using a function of an ink amount profile in a Y direction. High-quality or even highest-quality printed products can therefore be produced, in particular avoiding defects that are visible to the human eye in a region of overlap or a strip between swaths that are printed next to one another.

Abstract: The invention relates to a process for preparing aldehydes having five carbon atoms, in which an input mixture containing 10% by weight to 50% by weight of linear butenes and less than 5% by weight of 1-butene is hydroformylated with synthesis gas in the presence of a catalyst system comprising rhodium and at least one bisphosphite ligand, wherein the hydroformylation is effected in a reactor from which, over an operating period, a cycle gas containing at least a portion of the products and unconverted reactants from the hydroformylation is continuously drawn off and partly condensed, and uncondensed components of the cycle gas are recycled into the reactor, and wherein, after the operating period has expired, the hydroformylation is stopped, the reactor is freed of reaction residues and the hydroformylation is restarted. It is based on the problem of making such a process more economically viable.

Abstract: The invention relates to a process for preparing aldehydes having five carbon atoms, in which an input mixture containing 10% by weight to 50% by weight of linear butenes and less than 5% by weight of 1-butene is hydroformylated with synthesis gas in the presence of a catalyst system comprising rhodium and at least one bisphosphite ligand, wherein the hydroformylation is effected in a reactor from which, over an operating period, a cycle gas containing at least a portion of the products and unconverted reactants from the hydroformylation is continuously drawn off and partly condensed, and uncondensed components of the cycle gas are recycled into the reactor, and wherein, after the operating period has expired, the hydroformylation is stopped, the reactor is freed of reaction residues and the hydroformylation is restarted. It is based on the problem of making such a process more economically viable.

Abstract: The invention relates to a method for enriching a homogenous catalyst from a process flow comprising said homogenous catalyst as a component, wherein the process flow is conducted over at least one membrane and wherein the membrane wholly or partially comprises a polymer that has planar polymer units connected to one another via a rigid link and wherein the linker is contorted, such that at least one planar polymer unit is connected to at least one second planar polymer unit via the link, in a non-co-planar arrangement. The invention furthermore relates to a method for producing tridecanal.

Abstract: A system for printing an image, preferably a multicolor halftone image, onto at least one non-planar area of a surface of an object, for example a section of a body of a vehicle, includes an inkjet print head having nozzles, a robot, preferably an articulated robot, creating a primary movement, the primary movement including at least two printing paths of the inkjet print head being lateral to each other, and a device creating a secondary movement, the secondary movement being substantially perpendicular to the primary movement and causing the printing paths to laterally adjoin each other. As a result, undesired streaks between the printing paths may advantageously be reduced or prevented.

Abstract: A device for supplying radiant energy onto a printing substrate (14), including at least one radiant energy source (10) whose light (12) impinges on the printing substrate (14) on the path (16) of the printing substrate (14) through a printing press at a position (116) downstream of at least one printing nip (18) in a printing unit. The radiant energy source (10) emits light (12) having a peak-to-valley homogeneity of less than 15% in a direction transverse to the direction of the path (16) of the printing substrate (14).

Abstract: A sheet processing machine, in particular a sheet-fed printing press, includes a varnishing unit and at least one combination drier for applying radiation energy and heated air to a newly varnished sheet. The at least one combination drier includes a plurality of circular or polygonal air nozzles and narrow-band high-power infrared light sources disposed between the air nozzles. The infrared light sources apply radiation at a radiation density of at least 25 kW/m2 in total to the varnished sheet. The temperature of the heated air passing through the nozzles is below 100° C., preferably below 80° C. A method of drying sheets is also provided.

Abstract: A system for printing an image, preferably a multicolor halftone image, onto at least one non-planar area of a surface of an object, for example a section of a body of a vehicle, includes an inkjet print head having nozzles, a robot, preferably an articulated robot, creating a primary movement, the primary movement including at least two printing paths of the inkjet print head being lateral to each other, and a device creating a secondary movement, the secondary movement being substantially perpendicular to the primary movement and causing the printing paths to laterally adjoin each other. As a result, undesired streaks between the printing paths may advantageously be reduced or prevented.

Abstract: A sheet processing machine, in particular a sheet-fed printing press, includes a varnishing unit and at least one combination drier for applying radiation energy and heated air to a newly varnished sheet. The at least one combination drier includes a plurality of circular or polygonal air nozzles and narrow-band high-power infrared light sources disposed between the air nozzles. The infrared light sources apply radiation at a radiation density of at least 25 kW/m2 in total to the varnished sheet. The temperature of the heated air passing through the nozzles is below 100° C., preferably below 80° C. A method of drying sheets is also provided.

Abstract: A vacuum circuit-breaker wherein at least in one of the contacts at least one stud is used as a spacer, and is disposed between the mechanical connection portion and the circular plate of the contact body in such a manner as to avoid the collapse thereof during a closing operation of the vacuum circuit-breaker, and in the closed position the contacts can withstand very high compression forces, typically greater than 700 kg-force or 2 t-force.

Abstract: A vacuum circuit-breaker wherein one contact body is made with two windings implanted concentric with one another and connected electrically in parallel. The second winding is in the form of an solid part with an annular ring. The circuit-breaker increases the axial magnetic field (AMF) and distributes it uniformly over the contact surface so that arc extinction is improved for high short-circuit currents, typically greater than 63 kA.

Abstract: The invention relates to a method for enriching a homogenous catalyst from a process flow comprising said homogenous catalyst as a component, wherein the process flow is conducted over at least one membrane and wherein the membrane wholly or partially comprises a polymer that has planar polymer units connected to one another via a rigid link and wherein the linker is contorted, such that at least one planar polymer unit is connected to at least one second planar polymer unit via the link, in a non-co-planar arrangement. The invention furthermore relates to a method for producing tridecanal.

Abstract: The present invention relates to a VCSEL device comprising an optical gain medium (8) arranged between a first DBR (9) and a second DBR (7). The first and the second DBR form a laser cavity and are designed to allow self-contained lasing in the laser cavity, said second DBR (7) being partially transparent for laser radiation resonating in the laser cavity. An optical element is arranged on a side of the second DBR (7) outside of the laser cavity on the optical axis of the laser cavity. The optical element has a concave surface (5) facing the second DBR (7) and being designed to reflect a portion of laser radiation emitted through the second DBR (7) back into the laser cavity. The ratio R/d of the radius of curvature R of the concave surface (5) and the distance d between the concave surface (5) and the gain medium (8) is in the range between 1 and 2. With the proposed VCSEL device a high power output with an improved mode distribution and mode stabilization is achieved.

Abstract: A vacuum circuit-breaker wherein one contact body is made with two windings implanted concentric with one another and connected electrically in parallel. The second winding is in the form of an solid part with an annular ring. The circuit-breaker increases the axial magnetic field (AMF) and distributes it uniformly over the contact surface so that arc extinction is improved for high short-circuit currents, typically greater than 63 kA.

Abstract: A vacuum circuit-breaker wherein at least in one of the contacts at least one stud is used as a spacer, and is disposed between the mechanical connection portion and the circular plate of the contact body in such a manner as to avoid the collapse thereof during a closing operation of the vacuum circuit-breaker, and in the closed position the contacts can withstand very high compression forces, typically greater than 700 kg-force or 2 t-force.