Abstract: A microwave fuser device for heating printing matter in a reproduction apparatus with microwave energy from a suitable microwave source. The microwave fuser device supplies microwave energy through the bottom of a multi-channel resonator including a gap to enable transport of printing matter therethrough. The device includes a power splitter having plural channels for dividing microwave energy from the microwave source between the channels of the multi-channel resonator. The power splitter has a mechanism to provide variable geometry of its plural channels, whereby the effective width of microwave energy from the resonator of the microwave fuser device can be matched to the width of such printed matter having an image fused thereto substantially preventing undesirable high loss of energy and low yield.

Abstract: A microwave fuser apparatus, for a reproduction apparatus, the microwave fuser apparatus having at least two microwave applicators, staggered relative to a receiver member transport path with an area of overlap, for applying microwave energy to a receiver member traveling on such transport path relative to the microwave applicators to have toner images fused thereto. The microwave fuser apparatus has at least one additional microwave applicator, located adjacent to the overlapping area between the at least two staggered microwave applicators that applies microwave energy to the receiver member. The at least one additional microwave applicator effectively maintains an elevated temperature of a receiver member.

Abstract: Guiding a printing medium that is being conveyed along a travel path in a printing machine, whereby the printing medium is not making contact along at least one edge. A stream of sucked air (9) is directed at least partially outward, with respect to at least one edge (5) of the printing medium. A printing media guide with at least one air suction mechanism (8) for sucking air out of the area of the travel path of the printing medium (1) in order to create a suction air stream (9) is directed at least partially outwards.

Abstract: The invention relates to a method and a heating device for heating at least one printing agent on a printing material (4), which is passed along a transport path through said heating device, comprising at least one microwave applicator (2) and at least one microwave absorber element in the outer perimeter of said microwave applicator. The object of the present invention is to reduce the loss of energy due to microwave radiation exiting from the microwave applicator (5). The object of the invention is achieved in that the minimum of one microwave absorber element is an irradiation device that absorbs microwave radiation and emits electromagnetic radiation, in which case said irradiation device, in accordance with the method herein, is energized by microwave radiation, applies radiation to the printing agent and/or the printing material (4), and thus at least aids the heating process.

Abstract: A sheet transport method and apparatus are provided for improving the handling of sheets control in printing systems. This automatic sheet transport system and method includes transporting a sheet in the printing machine via a transport belt circulating in a direction of transport, wherein a sheet contact surface of the circulating transport belt is made of an electrically non-conducting material. The method includes placing a sheet on an area of the transport belt and sucking or holding the sheet to the circulating transport belt by a negative pressure applied through the belt and also applying electrical charges to generate electro-static holding forces between the circulating transport belt and the sheet.

Abstract: It is an object of the present invention to provide a high-quality printed image in a printing machine. To achieve this, a method for adjusting a fusing device 100 of a digital printing machine has been provided, in which case microwave signals of a specific frequency or frequency range are directed at a printing material 5, a change between the microwave signals reflected by the printing material and the emitted microwave signals is detected, and in which case the fusing device is adjusted based on the change between said microwave signals. Furthermore, a measuring device 20 for a printing machine is provided, said device preferably being used for carrying out the said method, whereby the measuring device is configured so as to detect a change between a microwave signal reflected by the printing material 5 and a microwave signal directed at said printing material.

Abstract: Toner images applied on the first-side and on the second-side of a substrate are fixed together by microwaves, by being heated to a final fixing temperature, and that the toner image applied on the first-side is prefixed by microwaves before a toner image on the second-side is applied, with the toner image of the first-side being heated to a prefixing temperature that is lower than the final fixing temperature.

Abstract: An object of the present invention is to produce a suitable printed image in a printing machine and provide efficient cooling of the printing material following a fusing operation. To do so, a method for fusing toner to a printing material (5) is provided, in which case the printing material (5) is guided in a contacting manner below the toner's glass transition temperature and in a non-contacting manner above the toner's glass transition temperature. Furthermore, a fusing arrangement (1) is provided, which comprises at least one device (3) for guiding the printing material (5) in a contacting manner below the toner's glass transition temperature and at least one device (12) for guiding the printing material (5) in a noncontacting manner above the toner's glass transition temperature.

Abstract: Using liquid print color in a printing process in which the print color is transferred from one transfer device onto another transfer device and/or onto a printing medium. To improve handling of the print color, in particular, to optimize it, preferably to avoid adversely affecting transference of the print color and at the same time to avoid adverse effects upon the printing medium, at least one liquid component of the print color is reduced.

Abstract: A device and a method for improving the quality of prints using a printer with at least one ink-jet printing device for colored printing of a printing naterial, such as a continuous roll feed material, said printing device including a heating device that applies microwaves to the printing material in order to dry a print applied to the printing material.

Abstract: Printing with the use of toner, in particular, for electrophotographic printing, wherein a printing machine set up for multi-color printing and includes several imaging stations or printing units is provided with at least two black toners in two imaging stations or printing units, one of said toners being suitable and provided for generating a duller printed image and one being suitable and provided for generating a glossier printed image, the printing of the duller printed image being at one speed and the printing of the glosser printed image being at a different speed.

Abstract: With a printing material that is to be printed at least two times with color by an ink jet printing device, microwaves are used for drying the ink on the printing material. The printing material is printed, in chronological order, at least two times with color, and the printing material is subjected to microwaves between one printing with color and the next printing with color.

Abstract: Fixing a toner to a print by heating by a microwave device and including a power source, in which the print is passed through a resonator chamber of the microwave device, in which the microwave power in the resonator chamber is set by at least one element in the resonator chamber, with the power delivered to the microwave device from the power source being constant.

Abstract: The smell of the printing medium and/or the printing format is at least influenced. At least one toner that contains at least one aromatic substance, or one ink, that contains at least one aromatic substance is applied to a printing medium. For this purpose, appropriate toners or inks and processes for their manufacture, as well as a printing machine for implementing an appropriate printing process, are introduced.

Abstract: A microwave arrangement for affixing the toner onto a printing material by heating, wherein a resonator chamber for feeding printing material therethrough includes at least one element, which extends into the resonator chamber and is used for tuning the resonance state in the resonator chamber. The element includes at least a first portion of a material with properties that essentially do not absorb the microwave radiation and a second portion of a material with mechanically stable properties and a slightly higher absorption of the microwave radiation than the first portion.

Abstract: A digital printing or copying machine (1) is proposed for the one-sided or double-sided printing onto a substrate (5), using at least one toner. The machine (1) includes at least one fixation device (3) for fixing the toner image on the substrate (5). The fixation device (3) has at least one heating device (13) for melting the toner image, past which the substrate (5) can be taken. The machine (1) is distinguished by a guide device (17) for the free floating movement of the substrate (5) in the effective range of the heating device (13).

Abstract: Handling a printing medium in a microwave fuser mechanism of a printing machine so as to prevent damages and disruptions that can occur because of the presence of condensed water. The invention is achieved by removing moisture from the microwave mechanism and by, at least, supporting conveyance of the printing medium by flowing air, and also by preventing moisture from being conveyed into other parts of the microwave mechanism.

Abstract: Adjusting a gloss for a print image by adjusting the cooling of the print image. Further, a toner for a printing press adjusting gloss by adjusting cooling includes 1% to 30% aliphatic hydrocarbons, aliphatic acids, aliphatic alcohols or their salts, or olefinic hydrocarbons.

Abstract: The use of a clear toner with a viscosity in the range of 6.2 Pa·s to 1.5 Pa·s at a temperature of 120° C. for creating a higher gloss value in the range of 28 to 47 at an angle of 60°.

Abstract: A method and an apparatus for preventing damage inside a printing machine caused by the radiation of microwaves emanating from microwave mechanisms. Undesired effects of the microwave radiation are automatically detected and then limited by countermeasures. Special provision is made for detecting an electrical discharge, or smoldering or burning of a printing medium inside the microwave mechanism, and then initiating suitable countermeasures.