摘要:
A method of adjusting a quantity of ink supplied to a printing material by a printing machine includes adjusting the quantity of ink as a function of the printing speed and, upon the occurrence of a change in the printing speed, making a change in the quantity of ink as a function of area coverage to be printed; and an adjusting device for performing the method.
摘要:
The present invention relates to a method for controlling the ink feed in a printing press which processes printing substrates (12) and features at least one inking unit and one computer and to a device for carrying out the method. The present invention is characterized in that the computer knows at least the physical properties of printing ink and/or printing substrates (12) as data, that the stored data is read into an ink control model which is stored in the computer, and that the optimum settings with regard to the ink feed are made on the basis of this ink control model before the start of printing or during the printing process.
摘要:
A method of producing from a first device-dependent image data set, a second image data set matched to a real process, includes, by using inverse gamut mapping, transforming color values from the first image data set into color values of a device-independent color space and, by using gamut mapping, transforming these device-independent color values into the second image data set of an output device; and a color management method including the producing method.
摘要:
A method of controlling a quantity of ink in an inking unit of a printing machine, includes producing an increase and a decrease, respectively, of the ink quantity from a first value to a second value by releasing, during a transition time period, a flow of ink quantity lying, respectively, above and below a second nominal value of the flow of ink quantity, corresponding to the second value. It further includes setting the ink quantity to a third value during the transition time period from the first to the second value of the ink quantity, interpolating an imaginary ink quantity between the first and the second ink quantity, beginning a new transition time period, and defining the flow of ink during the new transition time period, using a given rule as a function of the imaginary ink quantity and the third ink quantity.
摘要:
An ink fountain of a printing press includes a component having a bearing face for bearing printing ink and cells made in the bearing face. An ink fountain roll for an ink fountain of a printing press and a printing press having an ink fountain, are also provided.
摘要:
A method of producing from a first device-dependent image data set, a second image data set matched to a real process, includes, by using inverse gamut mapping, transforming color values from the first image data set into color values of a device-independent color space and, by using gamut mapping, transforming these device-independent color values into the second image data set of an output device; and a color management method including the producing method.
摘要:
A method for presetting an ink feed in multi-color printing derives presetting values for zonal ink metering devices and for ink metering rollers acting over a printing width from a set value for a weight per unit area of a full tone area, zonal area coverage values and an ink stripe width. For each of a plurality of printing inks, the zonal ink metering devices and the ink metering rollers are preset in dependence of an ink demand for an image to be printed.
摘要:
A method of controlling parameters of an ink layer at a selected location in a printing unit of a printing machine, the printing machine including at least one ink source for producing the ink layer on a transport device, whereon metering variables for regulating the application of ink to the transport device are zonally settable, and further including the transport device for transferring the ink layer to the selected location. The method includes, for each zone of the ink layer, using a subject to be printed for determining desired values of parameters which the ink layer is to have at the selected location, and setting the metering variables of the ink source, based upon the desired values of the parameters, so that the parameters of the ink layer as the ink layer is applied to the transport device have temporary values deviating from the desired values, the deviation being such that an exchange of ink between the zones, taking place in the transport device, leads to the ink layer reaching the desired values of the parameters as the ink layer is transferred to a printing form.
摘要:
A method of controlling printing presses includes setting inking by determining setting values for at least one of pre-inking and ink metering, which encompass inking zone opening and ink stripe width, and transmitting the determined setting values to controls of the printing press. The method includes presetting the inking by setting values of earlier print jobs stored in the machine and, for optimizing the printing results, correcting for each print job and storing the corrected setting values for subsequent print jobs.
摘要:
An ink fountain of a printing press includes a component having a bearing face for bearing printing ink and cells made in the bearing face. An ink fountain roll for an ink fountain of a printing press and a printing press having an ink fountain, are also provided.