Abstract: In a device for supplying a printing substrate web to an internal transport path of the printing substrate web of a printing device, a device accepts the printing substrate web from the printing substrate web source. A drive unit is provided at an output of the device and draws the printing substrate web from the device. A buffer device having a buffer reservoir is provided at an output of the drive unit. The buffer reservoir has a negative pressure device that generates a negative pressure in a buffer reservoir. The negative pressure acts on the printing substrate web to pull the printing substrate web drawn by the drive unit into the buffer reservoir and thereby tensions the printing substrate web before it is supplied to the internal transport path.

Abstract: In a print bar system or method in which at least one print bar is positioned in a printing position, first and second drive and guidance units are provided for the print bar and which each have an adjustable guidance unit and a first coupling unit. The print bar has print bar receptacles with adjustable positioning pins. The guidance units and the print bar receptacles are designed such that upon insertion of the print bar into the drive and guidance units the print bar receptacles rest in a floating bearing on the guidance units and are centered and arrested after displacement of the guidance units in the drive and guidance units such that the print bar is positioned into the printing position in the drive and guidance units and wherein the positioning pins engage in the first coupling units.

Abstract: In a device or method to develop charge images generated on a charge image carrier, a rotating applicator moves developer fluid having charged toner particles charged to a predetermined charge and carrier fluid past the charge image carrier. The developer fluid is moved into a developer gap between the applicator and a counter-electrode where it is exposed to an electrical field between the counter-electrode and the applicator. The toner particles of the predetermined charge are moved in a direction of the applicator depending on their charge, uncharged toner particles remaining unaffected and toner particles of opposite charge being repelled. Via a separation electrode protruding into the developer gap, the developer fluid in the developer gap is divided at an exit of the developer gap into a first partial flow adjacent to the application electrode and into a second partial flow adjacent to the counter-electrode where it is discharged.

Abstract: In a method or apparatus for controlling a printing process in an inkjet printing apparatus that has multiple print heads, a line scan is generated to print a print line on a recording material. The individual print heads are individually controlled with an offset relative to the line scan to eject printing ink, print data prepared for the printing being stored in a memory device upstream of the print heads. Print data units to be printed by the print heads are transferred from the memory device to the respective print heads in a same order with which they are printed. The order with which the print data units are transferred is controlled by request commands entered into a FIFO memory, each request command identifying a print head in the order of the transfer of the print data units corresponds to an order of the request commands in the FIFO memory.

Abstract: In a method for processing of a plurality of document processing jobs in a computer-aided document processing system, job chaperone data are generated that identify a preferred job processing apparatus relative to other job processing apparatuses of a same type in a job provider computer with respect to a document processing job.

Abstract: An electrophoretic printing system is provided comprising a transfer printing station for transfer printing charge images developed with liquid toner comprising a carrier fluid and toner and wherein the developed charge images are transferred to a recording medium. A wetting unit provided adjacent to the recording medium before the transfer printing station as viewed in a movement direction of the recording medium wets the recording medium with a fluid.

Abstract: In a method or system for processing a measurement signal to detect a property of a toner mark, the toner mark is generated with aid of an image generation device. The toner mark is detected with aid of a measurement unit in that sample values determined by the measurement unit at sample points in time are output as the measurement signal for detecting the property of the toner mark. A function is determined to describe at least one part of a signal curve of the measurement signal on a basis of at least one part of the output sample values. At least one extreme value of the function is determined.

Abstract: In a method or system to generate a template, the template is defined by content and layout information. Job chaperone data are associated with the template to control subsequent document processing processes.

Abstract: In a method to regenerate during operation ink in nozzles of at least one inkjet print head operating according to drop on demand in an inkjet print apparatus, nozzles of the print head that generate print dots on a printing substrate are activated such that the nozzles output first ink droplets of a predetermined volume in a direction towards the printing substrate. Nozzles that are not being currently used to generate print dots on the printing substrate are activated such that they output at least one second ink droplet of a smaller volume in comparison to the first ink droplets volume. During at least the outputting of the second ink droplet, a suction flow is generated between the inkjet print head and the printing substrate of such strength that the second ink droplet is deflected so it does not arrive at the printing substrate.

Abstract: In a method to clean nozzles and ink channels of at least one ink print head with a flushing medium in an ink printing apparatus, a necessary flushing quantity of the flushing medium that is to be provided and which is necessary for flushing of the ink print head in a flushing process is determined from either a predetermined flushing quantity predetermined depending on a print duration of the ink printing apparatus or from a drive flushing quantity derived from a flushing quantity curve that indicates a dependency of the flushing quantity on an elapsed time for an ink used in printing, the necessary flushing quantity being either said predetermined flushing quantity or the derived flushing quantity, whichever is greater. The determined necessary flushing quantity is used to flush the ink print head.

Abstract: In a method to determine a character width of characters from printed dots in a printing or copying device the printed dots are generated at a location of individual printed elements of a print raster made up of printed elements. In a first raster cell of the print raster a first test pattern is generated that does not cover an entire area from multiple printed dots, and the first raster cell is measured for areal coverage. In a second raster cell of the print raster a second test pattern is generated that does not cover an entire area in which the printed dots are arranged at least in part at different printed element locations in comparison to the first test pattern, and the second test pattern is measured for areal coverage. A ratio of the areal coverages is calculated and the printed dot size is calculated with aid of the ratio. Alternatively instead of measuring areal coverage with respect to the first and second test patterns, toner quantity is measured.

Abstract: In a method and a device to sort pixel data in a print data stream, a data sorting memory is used configured so that it can be written per column and read per row. The pixel data are entered per column into the data sorting memory in the order of the incoming print data stream. Via the per-row readout the pixel data are re-sorted into an order suitable to control the print head. The sorting can thereby take place in only one write process and one read process.

Abstract: In a device or method to change a belt in a machine assembly, a gripper is provided with two flat legs. The legs are held at one end and are free at the other ends. The legs are provided with a respective protective film on side surfaces facing towards one another to protect the belt. A first of the two legs facing towards the machine assembly in an exchange of the belt have a sliding film on its outer surface. The legs are designed such that they exert a gripping force over a width of the belt after sliding onto the belt and grip the belt so that the belt can be slid onto or removed from rollers of at least one of the roller types selected from the group consisting of a drive roller and a deflection roller provided in the machine assembly.

Abstract: In a transport case for transport of at least one high value, heavy transport goods, a floor is provided on which an object carrier is arranged on an inside of the case such that it can be displaced in a direction of a longitudinal axis of the case. At least one cover is connected with the floor with at least one hinge such that it can be folded over and the cover can be opened such that the transport good is freely accessible parallel to the longitudinal axis in an opened state of the transport case.

Abstract: Printed images exhibiting a color medium are applied to the printing substrate by a printing device, the printing substrate having been provided beforehand with a viscous fluid film by an application unit arranged in front of the printing device. The color medium of the printed images migrates to a surface of the viscous fluid film and adheres there. After the drying of the fluid film the printed images are firmly fixed on the printing substrate.

Abstract: For implementation of a transfer of data between two program elements, a buffer object is provided between and linking the program elements. One of the program elements writes data into the buffer and the other program element reads data from the buffer, thus driving data transfer. The program element writing the data causes the buffer to call the reading program element. The program element reading the data causes the buffer object to call the writing program element.

Abstract: In a method and arrangement for authenticating a data processing system, first information is generated by a first data processing system and delivered to a second data processing system for a control unit. First data are transmitted from the second data processing system to the first data processing system over a data line, the first data being generated by the second data processing system with aid of the first information and additional information contained in the second data processing system. Second data are generated by the first data processing system depending on the first data and transmitted from the first data processing system to the second data processing system. Authentication information for authenticating the second data processing system is generated by the second data processing system with aid of the second data.

Abstract: In a method to convert color-describing input print data suitable for graphical output with aid of an output apparatus into color-describing output print data, color proportions, defined by the input print data, of at least one region to be inked with at least two color separations, are determined, and a color space value to be generated with aid of the color separations is determined. An association rule is determined to convert the input print data into the output print data while retaining the color space value. A total areal coverage of areal coverages defined by the output print data of the color separations to generate the color space value is reduced relative to areal coverages of the color separations defined by the input print data. The input print data is converted into the output print data with aid of the determined association rule.

Abstract: In a method to remove toner deposits on a surface of a cleaning element, electrically charged toner particles are transferred from a transfer element surface to a photoconductor. On the cleaning element, untransferred, electrically charged toner particles as residual toner from the transfer element surface are received. Electrically charged toner particles on the cleaning element are directed past an electrode arrangement arranged at a distance from the surface of the cleaning element. An alternating electrical field is generated which acts on the toner particles to loosen them. The toner particles remaining on the surface of the cleaning element are brought into contact with a mixture of carrier particles and toner particles during further transport along a transport direction of the cleaning element.

Abstract: In a method or system for generation of a toner image layer with a preset layer thickness on a surface of a photoconductor, the two-component mixture of electrically charged toner particles and carrier particles is directed on an auto-surface of a roller adjacent a surface of an applicator element to be inked. At least a portion of the toner particles is transferred onto the surface of the applicator element. An electrical field is generated that exerts at least one force on a portion of the electrically charged toner particles between the roller and the applicator element. A strength of the electrical field is varied to adjust a layer thickness of a layer of the toner particles transferred onto the surface of the applicator element and thus to adjust a thickness of the toner image layer on the photoconductor. A measurement arrangement detects a thickness of at least one region of the toner image layer inked on the surface of the photoconductor as a real value.