Abstract: Printing machines are fitted with a printer assembly for application of solvent-containing printing ink onto a printing substrate. A transport device transports the printing substrate from the printer assembly to a dryer unit that has at least one infrared radiator for drying the printing substrate. The dryer unit is improved in terms of homogeneity and rapidity of the drying of solvent-containing printing ink, and in that no active cooling of the infrared radiator is required. The infrared radiator is a planar heating element made of a dielectric, emits infrared radiation when heated, and comprises a heating surface that faces the printing substrate to be dried. The infrared radiator has a contacting surface, onto which a printed conductor of a heating conductor made of an electrically conductive precious metal-containing resistor material is applied, that is connected to an adjustable current source by an electrical contact.

Abstract: An infrared heating unit with a furnace includes a housing that accommodates a process space, and a heating facility, whereby the process space is bordered, at least in part, by a furnace lining made of quartz glass. In order to provide, on this basis, an infrared heating unit that enables energy-efficient and uniform (homogeneous) heating of the heating goods by infrared radiation to temperatures of even above 600° C., the heating facility is formed by at least one heating substrate that includes a contact surface in contact with a printed conductor made of a resistor material that is electrically conductive and generates heat when current flows through it, whereby the heating substrate includes doped quartz glass, into which an additional component that absorbs in the infrared spectral range is embedded and forms at least a part of the furnace lining.

Abstract: An infrared emitter is provided. The infrared emitter includes a substrate made of an electrically insulating material. The substrate includes a surface that contacts a printed conductor made of a resistor material that is electrically conducting and generates heat when current flows through it. The electrically insulating material includes an amorphous matrix component into which an additional component is embedded that absorbs in the spectral range of infrared radiation. At least a part of the surface is configured with a cover layer made of porous glass, whereby the printed conductor is embedded, at least in part, in the cover layer.

Abstract: Known infrared radiators have a support, a heating conductor's conductor path applied to the support, of an electrically conducting resistor material, as well as an electrical contacting of the heating conductor's conductor path. In order to specify an infrared radiator with a high radiation efficiency based on this, the heating conductor's conductor path of which is provided with a structurally simple and cost-efficient electrical contacting, it is proposed according to the invention for the support to include a composite material, which comprises an amorphous matrix component as well as an additional component in the form of a semiconductor material, and for the contacting to be applied to the support as contacting conductor path, wherein the cross section of the contacting conductor path is at least 3-times the cross section of the heating conductor's conductor path.

Abstract: An infrared emitter that comprises a cladding tube made of quartz glass that surrounds a heating filament as an infrared radiation-emitting element that is connected via current feedthroughs to an electrical connector outside the cladding tube. To improve the service life and power density, the heating filament comprises a carrier plate with a surface made of an electrically insulating material, whereby the surface is covered by a printed conductor made of a material that generates heat when current flows through it.

Abstract: Printing machines are fitted with a printer assembly for application of solvent-containing printing ink onto a printing substrate. A transport device transports the printing substrate from the printer assembly to a dryer unit that has at least one infrared radiator for drying the printing substrate. The dryer unit is improved in terms of homogeneity and rapidity of the drying of solvent-containing printing ink, and in that no active cooling of the infrared radiator is required. The infrared radiator is a planar heating element made of a dielectric, emits infrared radiation when heated, and comprises a heating surface that faces the printing substrate to be dried. The infrared radiator has a contacting surface, onto which a printed conductor of a heating conductor made of an electrically conductive precious metal-containing resistor material is applied, that is connected to an adjustable current source by an electrical contact.

Abstract: Infrared panel radiators are provided including a carrier with a heating surface, and a printed conductor made of an electrically conductive resistor material that generates heat when current flows through it. The printed conductor is applied to a printed conductor occupation surface of the carrier. The printed conductor includes a first printed conductor section for generation of a first power per unit area and a second printed conductor section for generation of a second power per unit area that differs from the first power per unit area. The carrier contains a composite material including an amorphous matrix component and an additional component in the form of a semiconductor material. The first printed conductor section and the second printed conductor section are circuited in series and differ from each other by their occupation density and/or by their conductor cross-section.

Abstract: An infrared emitter that comprises a cladding tube made of quartz glass that surrounds a heating filament as an infrared radiation-emitting element that is connected via current feedthroughs to an electrical connector outside the cladding tube. To improve the service life and power density, the heating filament comprises a carrier plate with a surface made of an electrically insulating material, whereby the surface is covered by a printed conductor made of a material that generates heat when current flows through it.

Abstract: An infrared panel radiator includes a substrate made of an electrically insulating material. A printed conductor is applied to a surface to the substrate. The printed conductor is made of an electrically conductive resistor material that generates heat when current flows through it. A process for producing the infrared panel radiator includes: (a) providing the substrate; and (b) applying the printed conductor to a surface of the substrate. To produce an infrared radiator that features homogeneous radiation emission at high radiation power per unit area, the substrate is manufactured from a composite material including an amorphous matrix component and an additional component in the form of a semiconductor material. The printed conductor is provided as a form part with a fixed geometric shape. The printed conductor is applied to the surface of the substrate such that the printed conductor and the substrate are permanently connected to each other.

Abstract: An infrared emitter is provided. The infrared emitter includes a substrate made of an electrically insulating material. The substrate includes a surface that contacts a printed conductor made of a resistor material that is electrically conducting and generates heat when current flows through it. The electrically insulating material includes an amorphous matrix component into which an additional component is embedded that absorbs in the spectral range of infrared radiation. At least a part of the surface is configured with a cover layer made of porous glass, whereby the printed conductor is embedded, at least in part, in the cover layer.

Abstract: Known devices for irradiating a cylindrical substrate have a cylindrical irradiation chamber having a center axis, and a radiator unit around the irradiation chamber. Starting from these known devices, to provide a device that can be easily and quickly retrofitted and also enables a uniform irradiation of the substrate, it is proposed according to the invention that the radiator unit be formed from multiple segments connected to each other, wherein each of the segments has an optical main radiator having an illuminated radiator tube section that is curved outwardly with respect to the center axis, and wherein the radiator tube sections are arranged in a common radiator plane perpendicular to the center axis.