摘要:
A print curing apparatus comprising a housing (1) for receiving a radiation source; a controller for controlling the power supplied to the radiation source (7, 7′); a detector for detecting the type of radiation source (7, 7′) and for feeding a signal to the controller in order to alter the power supplied accordingly.
摘要:
There is described a sheet-fed or web-fed printing press for numbering and varnishing of security documents, including banknotes, comprising: —a numbering group (02) comprising at least one numbering unit (21, 22) for numbering printed material in the form of individual sheets or successive portions of a continuous web carrying multiple security imprints; and—a varnishing group (03; 03*) located downstream of the numbering group (02) for applying varnish onto recto and verso sides of the printed material, the varnishing group (03; 03*) comprising at least a first varnishing unit (31) disposed above a path of the printed material to apply varnish on the recto side of the printed material and at least a second varnishing unit (32) disposed below the path of the printed material to apply varnish on the verso side of the printed material.
摘要:
A lamp is provided including a first module and at least one second module, each having a plurality of LEDs distributed over a module surface. The modules are arranged on at least one cooling element for dissipation of lost heat. A reflector deflects light emitted by one of the modules into an exit opening of the lamp. An optical system located between at least some of the LEDs and the exit opening bundles the light of the LEDs into a defined structure on a target surface.
摘要:
A monitoring device includes a light source, an optical filter, and an optical detector. The monitoring device may monitor curing processes, such as ultraviolet (UV) curing processes to determine the progression of the level of cure of a light-activated material to a substrate. The light source emits light toward a light-activated material, such as a film, and/or a substrate. The optical filter is positioned so that a wavelength of the light is transmitted through the optical filter after the light is reflected off of the substrate and/or the film. The optical detector is positioned to detect the light that is transmitted through the optical filter.
摘要:
A light irradiation apparatus of the embodiment is a light irradiation apparatus that emits light including an ultraviolet ray to a target relatively moving in one direction, including a light irradiation device in which a light emitting element is disposed on one main surface of a base; and a light irradiation chamber in whose internal space the target moves with a light-irradiated surface up from an entrance to an exit thereof in the one direction, the light irradiation device being disposed in an upper section of the internal space.
摘要:
A method for drying printed material operates with the aid of a one-dimensional or two-dimensional array of radiation sources which can be driven individually or in groups. At the same time, the high-resolution image data describing the printing image or a content of printing forms for individual color separations is transformed into image data of lower resolution. Position data which describes the position of the printed image in the transport direction is also obtained from a device for transporting the printing material. Control data for modulation of an intensity of the radiation sources or groups of radiation sources of the array are generated from the image data of lower resolution and the position data, so that the printing material is swept over in the transport direction with time-modulated radiation points which in each case include a plurality of image points of the higher-resolution printed image.
摘要:
A high-intensity light source is formed by a micro array of a semiconductor light source such as a LEDs, laser diodes, or VCSEL placed densely on a liquid or gas cooled thermally conductive substrate. The semiconductor devices are typically attached by a joining process to electrically conductive patterns on the substrate, and driven by a microprocessor controlled power supply. An optic element is placed over the micro array to achieve improved directionality, intensity, and/or spectral purity of the output beam. The light module may be used for such processes as, for example, fluorescence, inspection and measurement, photopolymerzation, ionization, sterilization, debris removal, and other photochemical processes.
摘要:
Design and integration of a UV LED curing system into a multi-station UV-curing process, such as for inkjet or offset printing. Docking ports may be permanently mounted into various stations within the UV-curing process. The UV LED lamps may be modular and may therefore be inserted into any one of the desired docking ports at variable distances from the substrate to be cured without significant loss of optical uniformity or radiant intensity. The docking ports are designed such that they can accommodate UV LED lamps of differing wavelengths and, therefore, power requirements. The insertion of a UV LED lamp into a docking port is designed such that it is accomplished without tools and may be considered a “plug and play” operation. Multiple docking ports may be mounted into a single station in the UV-curing process to allow for the installation of multiple lamps at each station.
摘要:
In a memory unit 6, there is stored a correction table for each candidate value of an output set value of each of LED units 2. If UV rays have ever been emitted so far by the LED units 2, each of which is formed of a plurality of LED chips 8, then a PLC 5 acquires, upon setting of a output set value by an operation unit 53, a correction value corresponding to a cumulative emission time up to a previous emission, from the correction table of the output set value. Thereafter, the PLC 5 sets the magnitude of the power supplied to each of the LED units 2 using the acquired correction value. If an output set value different from a previous output set value is set, the PLC 5 obtains the correction value starting from the cumulative emission time upon modification. As a result, the UV irradiation apparatus enables power consumption necessary for emission of UV rays to be reduced, and UV ray output to be kept constant regardless of the cumulative emission time, even if the output set value is modified.
摘要:
Design and integration of a UV LED curing system into a multi-station UV-curing process, such as for inkjet or offset printing. Docking ports may be permanently mounted into various stations within the UV-curing process. The UV LED lamps may be modular and may therefore be inserted into any one of the desired docking ports at variable distances from the substrate to be cured without significant loss of optical uniformity or radiant intensity. The docking ports are designed such that they can accommodate UV LED lamps of differing wavelengths and, therefore, power requirements. The insertion of a UV LED lamp into a docking port is designed such that it is accomplished without tools and may be considered a “plug and play” operation. Multiple docking ports may be mounted into a single station in the UV-curing process to allow for the installation of multiple lamps at each station.