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Method for carrying out printing operation on inkjet printing machine

An inkjet printing machine, printing process technology, applied in the direction of printing, data processing input/output process, printing device, etc., can solve the problems of not being able to realize the ink limit, lack of test patterns, and not considering the calibration of printing machines, etc.

Active Publication Date: 2018-10-09
HEIDELBERGER DRUCKMASCHINEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Does not directly reflect the physical situation and does not take into account the calibration of the printing press used
Furthermore, ink-specific limits cannot be achieved
[0008] The prior art therefore lacks the generation of test patterns for color management, compatible with inkjet printing, and the usual use of the physical size of the ink drop volume

Method used

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  • Method for carrying out printing operation on inkjet printing machine
  • Method for carrying out printing operation on inkjet printing machine
  • Method for carrying out printing operation on inkjet printing machine

Examples

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Embodiment Construction

[0034] The field of application of the preferred embodiment variant is the inkjet printer 7 . exist figure 1 An example of the basic structure of the machine 7 is shown in , which comprises a feeder 1 up to an outfeed 3 for feeding a printed substrate 2 to a printing unit 4 in which the printed substrate is Printed by print head 5. The machine is here an inkjet sheet printing press 7 , which is controlled by a control computer 6 .

[0035] According to the basic schematic flow process of the method of the present invention in figure 2 shown in . Here, the method comprises four substeps. First, the inkjet printer 7 used is calibrated. This process is Figure 4 in detail. The calibration ends with the generation of a calibration characteristic curve of the printing press 7 .

[0036] A further important substep is the subsequent characterization in which the test patterns required for the color change are adjusted. This process is Figure 5 in detail. The most import...

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PUM

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Abstract

A method for printing on an inkjet printing machine including color space transformation between target and process color spaces using a computer, includes calibrating the machine by printing and colorimetrically measuring a process color space test chart for printing in the target color space including printing-operation-related limitations in the applied ink amount. The generated measured valuescorrespond to sampling points in the measured target color space. The sampling points are interpolated to define further sampling points. The color space transformation uses sampling points in the target color space and input values from the chart in the process color space corresponding to sampling points in the target color space. The physical variable of ink drop volume is directly used for ink application limitations and input values in the process color space. The calibration of the machine is adapted and the printing operation is carried out.

Description

technical field [0001] The invention relates to a method for carrying out a printing process in an inkjet printer by means of direct color control with respect to the ink drop volume. [0002] The present invention is in the technical field of digital printing. Background technique [0003] In inkjet printing, the working methods known from conventional offset printing and the test patterns used there are mostly used today. In this case, a test pattern is selected which has test areas with process colors, usually CMYK and optionally One or more additional colors, and coverage values ​​with different color coverages such as 10, 20, 30 to 100%. When the most different combination of process colors described below is printed, the most different combination of process colors is produced as a color in the target color space that can be printed by the printing press used. That is to say, the color space of the process colors used in the printing press, namely CMYK and possible ...

Claims

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Application Information

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IPC IPC(8): B41J2/12B41J29/393
CPCB41J2/12B41J29/393H04N1/00023H04N1/00031H04N1/00087H04N1/6041H04N1/605G06F3/1219H04N1/6008
Inventor S·埃格特H·西格里茨S·博尔曼N·普法伊费尔
Owner HEIDELBERGER DRUCKMASCHINEN AG
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