Abstract: A user defines the real costs for each of the individual inks used in printer and also defines a tolerance level for visual acceptance, defined in CIE units of DeltaE2000. Then, an algorithm performs a search through all nodes of the device link profile and for each node it tries to find an ink combination that creates less costs and is still within the given visual tolerance (<dE2000).

Abstract: A user defines the real costs for each of the individual inks used in printer and also defines a tolerance level for visual acceptance, defined in CIE units of DeltaE2000. Then, an algorithm performs a search through all nodes of the device link profile and for each node it tries to find an ink combination that creates less costs and is still within the given visual tolerance (<dE2000).

Abstract: Techniques are provided that include an algorithm and a computing device using such algorithm to compute a white ink separation channel from the CMYK or RGB data from a print pipeline as an input. This input originally corresponds to print data on a media with standard whiteness, e.g. standard whiteness corresponding to a diffuser used by the Comission Internationale de l'Eclairage (CIE) 1964 media whiteness formula. In an example implementation, the white ink channel computed by the computing device using such algorithm may be printed as a pre-coat on a colorimetrically different media which does not comply with definitions and formulae of CIE's whiteness and tint.

Abstract: A method and apparatus are provided by which optimum usage of available color space of an output device, e.g. an inkjet printer or laser printer, is achieved. Gamut compression is dynamically computed by being dependent on contents of a print job, as opposed to only using pre-calculated or static tables or ICC rendering intents.

Abstract: The screened printing data are subjected to a filtering method, the raster information being maintained. Intermediate tonal values are produced by the filtering method, using the binary tonal values, the intermediate tonal values being configured in such a way that, by means of a color space transformation, transformed tonal values and/or intermediate tonal values can be formed which represent a true-to-color proof.

Abstract: Techniques are provided that include an algorithm and a computing device using such algorithm to compute a white ink separation channel from the CMYK or RGB data from a print pipeline as an input. This input originally corresponds to print data on a media with standard whiteness, e.g. standard whiteness corresponding to a diffuser used by the Comission Internationale de l'Eclairage (CIE) 1964 media whiteness formula. In an example implementation, the white ink channel computed by the computing device using such algorithm may be printed as a pre-coat on a colorimetrically different media which does not comply with definitions and formulae of CIE's whiteness and tint.

Abstract: A method and apparatus are provided by which optimum usage of available color space of an output device, e.g. an inkjet printer or laser printer, is achieved. Gamut compression is dynamically computed by being dependent on contents of a print job, as opposed to only using pre-calculated or static tables or ICC rendering intents.

Abstract: A printing system having a control arrangement and at least one printer, which are connected to each other via a communications network, in which the printer comprises the following components: a sensor arrangement with at least one sensor for registering at least one printing parameter, an encoding unit coupled to the sensor arrangement for encoding a printing parameter message belonging to a printing parameter determined by the sensor arrangement, a data transmitting unit, which is connected to the communications network, for sending the printing parameter message, in which the control arrangement comprises the following components: a data receiving unit, which is connected to the communications network, for receiving the printing parameter message, a decoding unit for decoding the printing parameter message, a printing parameter monitoring unit, coupled to the decoding unit, for monitoring the printing parameter received.

Abstract: The screened printing data are subjected to a filtering method, the raster information being maintained. Intermediate tonal values are produced by the filtering method, using the binary tonal values, the intermediate tonal values being configured in such a way that, by means of a color space transformation, transformed tonal values and/or intermediate tonal values can be formed which represent a true-to-color proof.

Abstract: The screened printing data are subjected to a filtering method, the raster information being maintained. Intermediate tonal values are produced by the filtering method, using the binary tonal values, the intermediate tonal values being configured in such a way that, by means of a color space transformation, transformed tonal values and/or intermediate tonal values can be formed which represent a true-to-color proof.

Abstract: The screened printing data are subjected to a filtering method, the raster information being maintained. Intermediate tonal values are produced by the filtering method, using the binary tonal values, the intermediate tonal values being configured in such a way that, by means of a color space transformation, transformed tonal values and/or intermediate tonal values can be formed which represent a true-to-color proof.

Abstract: The screened printing data are subjected to a filtering method, the raster information being maintained. Intermediate tonal values are produced by the filtering method, using the binary tonal values, the intermediate tonal values being configured in such a way that, by means of a color space transformation, transformed tonal values and/or intermediate tonal values can be formed which represent a true-to-color proof.

Abstract: The invention relates to a printing device and a method of operating the printing device, it being possible for the following steps to be carried out: printing a calibration print by means of the printing device, the calibration print having a plurality of measuring areas with different colour mixture relationships, spectrophotometric measurement of the measuring areas, producing a colour profile, the spectrophotometric measurement of the measuring areas being carried out at a plurality (N) of measuring times (Tn), producing a colour profile which is extended by a description of the behaviour over time and which comprises a plurality of colour profiles in each case associated with a measuring time, and setting the colour mixture relationships of the printing device on the basis of the colour profile extended by a description of the behaviour over time.

Abstract: In a method of monitoring a printing parameter of a printer, as well as a corresponding printing system, printing data are printed out, before being transmitted to a printer, by means of a further printer. The further printer is coupled to a sensor arrangement and monitored by means of a control unit, for determining desired values by using the printout produced by the further printer. By using this printout, a predetermined criterion is determined for a comparison of the printing parameter.

Abstract: A printing system having a control arrangement and at least one printer, which are connected to each other via a communications network, in which the printer comprises the following components: a sensor arrangement with at least one sensor for registering at least one printing parameter, an encoding unit coupled to the sensor arrangement for encoding a printing parameter message belonging to a printing parameter determined by the sensor arrangement, a data transmitting unit, which is connected to the communications network, for sending the printing parameter message, in which the control arrangement comprises the following components: a data receiving unit, which is connected to the communications network, for receiving the printing parameter message, a decoding unit for decoding the printing parameter message, a printing parameter monitoring unit, coupled to the decoding unit, for monitoring the printing parameter received.

Abstract: A printing system having a control arrangement and at least one printer, which are connected to each other via a communications network,

Abstract: The screened printing data are subjected to a filtering method, the raster information being maintained. Intermediate tonal values are produced by the filtering method, using the binary tonal values, the intermediate tonal values being configured in such a way that, by means of a colour space transformation, transformed tonal values and/or intermediate tonal values can be formed which represent a true-to-colour proof.