Abstract: A slipring with at least one slip ring module having at least one sliding track, and at least one wear indication track. A wear indication circuit is connected to the at least one wear indication track for monitoring electrical properties of the wear indication track and signaling an abnormal slipring condition. A wear indication track may be exposed to higher load, higher rotation speed, higher brush pressure force, or other lifetime-reducing influence as compared to a normal sliding track.

Abstract: A suction apparatus is provided, including a suction head, a suctioned material container for accommodating suctioned material, a suction blower device arranged on the suction head, and a channel device associated with the suction blower device for conducting process air at the suction head, wherein a pipe element with an adapter device is provided, wherein the adapter device is fluidically releasably connectable or connected to a suction port of the suction apparatus for performing a suction operation and the adapter device is fluidically releasably connectable or connected to a first air outlet for performing a blowing operation, and wherein an air inlet opening of a second channel for supplying process air from the suction blower device to a second air outlet is closed by at least one wall element of the adapter device when the adapter device is properly connected to the first air outlet.

Abstract: A slipring with at least one slip ring module having at least one sliding track, and at least one wear indication track. A wear indication circuit is connected to the at least one wear indication track for monitoring electrical properties of the wear indication track and signaling an abnormal slipring condition. A wear indication track may be exposed to higher load, higher rotation speed, higher brush pressure force, or other lifetime-reducing influence as compared to a normal sliding track.

Abstract: A printing system for printing on a web of media traveling along a web transport path, including a plurality of printheads for printing on the web of media, each of the printheads being configured to print at one or more corresponding print locations along the web transport path. A plurality of web transport rollers guide the web of media along the web transport path. Each of the plurality of web transport rollers has a roller circumference that is substantially equal to an integer fraction of a span of the web of media along the web transport path between two successive print locations.

Abstract: A printing system for printing on a web of media traveling along a web transport path, including a plurality of printheads for printing on the web of media, each of the printheads being configured to print at one or more corresponding print locations along the web transport path. A plurality of web transport rollers guide the web of media along the web transport path. Each of the plurality of web transport rollers has a roller circumference that is substantially equal to an integer fraction of a span of the web of media along the web transport path between two successive print locations.

Abstract: A printing system for printing on a web of media traveling along a web transport path including a plurality of print stations located along the web transport path, each print station including a printing cylinder having a printing cylinder circumference for printing on the web of media at a corresponding print location. A plurality of web-transport rollers are used to guide the web of media along the web transport path, each having a roller circumference that is substantially equal to an integer fraction of the printing cylinder circumference.

Abstract: A printing system for printing on a web of media traveling along a web transport path including a plurality of print stations located along the web transport path, each print station including a printing cylinder having a printing cylinder circumference for printing on the web of media at a corresponding print location. A plurality of web-transport rollers are used to guide the web of media along the web transport path. The printing system includes one or more constrained driven rollers having an affixed driven gear, the driven gear being driven by a motor using a gear train including one or more drive gears which transfer torque from the motor to the driven gear, wherein the driven gear and the drive gears associated with the constrained driven rollers are constrained to have a rotate an integer number of times for every rotation of the printing cylinders.

Abstract: Producing a vertical semiconductor device includes: providing a semiconductor wafer including a first semiconductor layer of a first conductivity type, a second semiconductor layer of a second conductivity type forming a first pn-junction with the first layer, and a third semiconductor layer of the first conductivity type forming a second pn-junction with the second layer and extending to a main surface of the wafer; forming a hard mask on the main surface that includes hard mask portions spaced apart from each other by first openings; using the hard mask to etch deep trenches from the main surface into the first layer so that mesa regions covered at the main surface by respective hard mask portions are formed between adjacent trenches; filling the trenches and first openings of the hard mask; and etching the hard mask to form second openings in the hard mask at the main surface of the mesas.

Abstract: A printing system for printing on a web of media traveling along a web transport path, including a plurality of printheads for printing on the web of media, each of the printheads being configured to print at one or more corresponding print locations along the web transport path. A plurality of web transport rollers guide the web of media along the web transport path. A drive roller causes the web of media to move along the web transport path. The drive roller has an affixed driven gear driven by a motor using a gear train including one or more drive gears which transfer torque from the motor to the driven gear. The driven gear and the drive gears are constrained to rotate substantially an integer number of times as the web of media is advanced along the web transport path between two successive print locations.

Abstract: A method for reducing tension fluctuations in a web while printing multiple copies of a print job on the web comprises providing a printing system with a print station one or more rollers adapted to receive tension control commands. The tension control commands operate on the rollers to control the amount of tension in the web. The printing system is used to print a first copy of the print job. Tension changes produced during the printing of the first copy of the print job are measured. First tension control adjustments based on the measured tension changes are used to adjust the tension control commands to the rollers in the printing system for printing a second copy of the print job, thereby reducing tension fluctuations.

Abstract: A system for reducing tension fluctuations in a web while printing multiple copies of a print job on the web comprises a printing system with a print station disposed opposite a first side of the web and one or more rollers adapted to receive tension control commands, the tension control commands operating on the first rollers to control the amount of tension in the web. A sensor is used to measure tension changes produced during the printing of the first copy of the print job. A processor is used to determine first tension control adjustments based on the measured tension changes and to use the adjustments to adjust the tension control commands to the rollers in the printing system to change the tension in the web when printing a second copy of the print job, thereby reducing tension fluctuations in the web.

Abstract: A system for using tension control adjustments on a web to reduce registration errors while printing multiple copies of a print job on the web comprises a printing system with a print station disposed opposite a first side of the web and one or more rollers adapted to receive tension control commands, the tension control commands operating on the first rollers to control the amount of tension in the web. A sensor is used to determine a plurality of registration errors produced during the printing of the first copy of the print job. A processor is used to determine first tension control adjustments based on the plurality of registration errors and to use the adjustments to adjust the tension control commands to the rollers in the printing system to change the tension in the web when printing a second copy of the print job, thereby reducing registration errors.

Abstract: A method for using tension control adjustments on a web to reduce registration errors while printing multiple copies of a print job on the web comprises providing a printing system with a print station one or more rollers adapted to receive tension control commands. The tension control commands operate on the rollers to control the amount of tension in the web. The printing system is used to print a first copy of the print job. A plurality of registration errors produced during the printing of the first copy of the print job is determined. First tension control adjustments based on the plurality of registration errors are used to adjust the tension control commands to the rollers in the printing system for printing a second copy of the print job, thereby reducing registration errors.

Abstract: Methods for operating a toner printer are provided. In one method a toner image is printed according to first printing instructions. An amount of toner in a target area of the toner image is determined and second printing instructions are generated causing the toner printer to print at least one subsequent toner image based upon the determined amount of first toner.

Abstract: Producing a vertical semiconductor device includes: providing a semiconductor wafer including a first semiconductor layer of a first conductivity type, a second semiconductor layer of a second conductivity type forming a first pn-junction with the first layer, and a third semiconductor layer of the first conductivity type forming a second pn-junction with the second layer and extending to a main surface of the wafer; forming a hard mask on the main surface that includes hard mask portions spaced apart from each other by first openings; using the hard mask to etch deep trenches from the main surface into the first layer so that mesa regions covered at the main surface by respective hard mask portions are formed between adjacent trenches; filling the trenches and first openings of the hard mask; and etching the hard mask to form second openings in the hard mask at the main surface of the mesas.

Abstract: A printer includes a marking unit for printing an image plane on a receiver medium. A digital image capture system is positioned downstream of the marking unit, and is used to capture an image of a printed image plane. Image data for the image plane is compared to the captured image to determine a displacement between a nominal location and an actual location of the printed image data. Corresponding spatial adjustments are applied to image data for a subsequent image to reduce alignment errors between the nominal and actual locations of the printed image data in the subsequent image.

Abstract: A printer includes first and second marking units for printing respective first and second image planes on a receiver medium. A digital image capture system is positioned between the first and second marking units, and is used to capture an image of a printed first image plane. Image data for the first image plane is compared to the captured image to determine a displacement between a nominal location and an actual location of the printed image data. Corresponding spatial adjustments are applied to image data for the second image plane to reduce alignment errors between the printed image data for the first and second image planes.

Abstract: A printer includes first and second marking units for printing respective first and second image planes on a receiver medium. A digital image capture system is positioned downstream of the second marking unit, and is used to capture an image of printed first and second image plane. Image data for the first and second image planes is compared to the captured image of the respective image planes to determine respective first and second displacements between the nominal locations and the actual locations of the printed image data. Corresponding spatial adjustments are applied to image data for at least one image plane of a subsequent image to provide reduced alignment errors between the printed image data for the first and second image planes in the subsequent image.

Abstract: Toner printers are provided. In one printer a toner image is printed according to first printing instructions. An amount of toner in a target area of the toner image is determined and second printing instructions are generated causing the toner printer to print at least one subsequent toner image based upon the determined amount of first toner.

Abstract: A slip ring brush includes a holding device made of two U-shaped holding plates inserted into each other. A holding plate includes clamping fingers which, disposed opposite of one another in pairs, form cavities that accommodate brush wires. The brush wires are tightly clamped inside these cavities by clamping fingers and are secured by additional clamping sleeves.