Abstract: A method and a controller operable to adjust the field strength of an electrical field for the toner transfer in an electrographic printing process. Current values of framework parameters can be determined and a control loop configured to adjust the electrical field is adapted based on current values of the framework parameters. An electrical reference variable of the control loop can be adapted to the current values of the framework parameters. The electrical reference variable can include, for example, a current and/or a voltage for the toner transfer.

Abstract: In a method to adjust print quality of print images in an electrophoretic digital printer with at least one print group, the print group generates charge images of the print images. The charge images are developed with a developer station into toner images using liquid developer having carrier fluid and toner. The toner images are transfer-printed onto a carrier medium in a transfer station. A first control marking is generated on the recording medium with elements of the first control marking being aligned transverse to a printing direction. A shape of the elements of the first control marking is measured to generate a first measurement signal. The first measurement signal is compared with a predetermined nominal value, and given a difference, an adjustment signal is generated via which an amount of the carrier fluid in the liquid developer is modified so that the first measurement signal approaches the predetermined nominal value.

Abstract: In a method to adjust print quality of print images in an electrophoretic digital printer with at least one print group, the print group generates charge images of the print images. The charge images are developed with a developer station into toner images using liquid developer having carrier fluid and toner. The toner images are transfer-printed onto a carrier medium in a transfer station. A first control marking is generated on the recording medium with elements of the first control marking being aligned transverse to a printing direction. A shape of the elements of the first control marking is measured to generate a first measurement signal. The first measurement signal is compared with a predetermined nominal value, and given a difference, an adjustment signal is generated via which an amount of the carrier fluid in the liquid developer is modified so that the first measurement signal approaches the predetermined nominal value.

Abstract: In a method or a transfer station for a digital printer, liquid developer with toner particles can be directed towards a first side of a recording medium and onto the first side of the recording medium at a transfer point. A transfer roller can be configured to direct the liquid developer towards the recording medium. The toner particles can have a first polarity and the recording medium can move past the transfer roller along a transport direction. A layer of charged particles can be applied from a second side of the recording medium by a surface charging station. The surface charging station can be arranged before the transfer point in the transport direction. The second side of the recording medium can be opposite the first side. The charged particles can have a second polarity that is opposite the first polarity.

Abstract: In a method or a transfer station for a digital printer, liquid developer with toner particles can be directed towards a first side of a recording medium and onto the first side of the recording medium at a transfer point. A transfer roller can be configured to direct the liquid developer towards the recording medium. The toner particles can have a first polarity and the recording medium can move past the transfer roller along a transport direction. A layer of charged particles can be applied from a second side of the recording medium by a surface charging station. The surface charging station can be arranged before the transfer point in the transport direction. The second side of the recording medium can be opposite the first side. The charged particles can have a second polarity that is opposite the first polarity.

Abstract: In a method for generation of a mapping rule input data of a print data stream structured per line, and which comprises variable data to be printed, are converted into output data of an output data structure. A predetermined structure description file is employed associated with the print data stream and which establishes an arrangement of the data to be printed on a page upon printout. An automatic design data set is automatically generated in which structurally associated print data are comprised structured at least one of per page or per region. The mapping rule is generated by use of a design data set that corresponds to the output data structure. By use of the automatic design data set, the mapping rule describes mapping of data of the automatic design data set to the design data set. The output data structure with respect to content is structured. The output data structure comprises field identifiers that are associated with the data to be printed.

Abstract: In a method, a computer program product and a system for conversion of an input document data stream with one or more documents into a structured data file, source data fields in an input document data stream are automatically positioned for readout of data to be extracted, whereby their positioning occurs by means of absolute or relative addressing. The source data fields are positioned by means of source data regions with which sections of the individual documents are detected. These source data regions are arranged nested and can in turn themselves be positioned absolutely or relatively. The corresponding rules are created in simple fashion via marking of the corresponding source data regions and source data fields in the template document.

Abstract: In a method or system for conversion of an input data document data stream that corresponds to one of many possible input data formats into an output document data stream that corresponds to one of many possible input data formats, the input document data stream is converted into an internal data format. Document formatting information that establishes a representation of the data in the output format is added as needed to the data in the internal data format. The data are then converted into the output data format.