Unlock instant, AI-driven research and patent intelligence for your innovation.

Compensation variation curve related to substrate

A technology of changing curves and substrates, applied in permanent visual display devices, power transmission devices, printing, etc., to solve problems such as errors

Active Publication Date: 2020-06-02
HEIDELBERGER DRUCKMASCHINEN AG
View PDF8 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this also requires that the intermediate values ​​of these individual variation curves be equal, otherwise the conversion calculation by the scalar factor will be erroneous

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Compensation variation curve related to substrate
  • Compensation variation curve related to substrate
  • Compensation variation curve related to substrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] A preferred field of application for implementing the variant is the inkjet printer 7 . figure 1 An example of the basic structure of such a machine 7 comprising a feeder 1 for feeding a printing substrate 2 into a printing mechanism 4 where the printing substrate 2 is printed by a printing head 5 up to Receiver 3. This is a sheet inkjet printing press 7 , which is monitored by a control computer 6 . During operation of the printing press 7 , as mentioned above, it may occur that the areal density achieved by the individual printing nozzles fluctuates. The local density fluctuations occurring in the inkjet printing machine 7 are compensated according to the invention by using compensation curves which vary the printing points to be applied to the printing material 2 (or printing substrate 2 ). Quantity and size equalize density fluctuations.

[0024] The factors influencing the density distribution achieved transversely to the printing direction in sheet inkjet print...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a method for compensating position-dependent density fluctuations of printing nozzles in an inkjet printer (7) by a computer (6), wherein the computer (6) makes compensation variation curve (10, 11) of density fluctuations related to the positions of all the printing heads (5) of the ink jet printer (7) for all used printing substrates and applies the compensation variation curve (10, 11) to compensate the position-dependent density fluctuations in the ink jet printer (7). The method is characterized in that a computer (6) uses a generic reference printing substrate toobtain the specific influence of the printing machine or the printing head and the specific influence factors of the printing substrate, respectively, A reference compensation variation curve (11) isproduced from the reference printing substrate, and the reference compensation variation curve (11) is related to the area coverage and location and thus an overall compensation variation curve usedto compensate the position-dependent density fluctuation is produced.

Description

technical field [0001] The invention relates to a method for compensating position-dependent density fluctuations of printing nozzles in inkjet printing machines by means of machine- and substrate-specific compensation. [0002] The technical field to which the present invention pertains is inkjet printing. Background technique [0003] The print heads used by inkjet printers have an array of printing nozzles arranged in various ways in the print head. The ink is ejected through the printing nozzles and thus produces the desired printed image. Due to production reasons, however, these printing nozzles have slight differences in the jetting behavior of the ink. This means that although the two printing nozzles are driven exactly the same and should therefore actually produce ink droplets of exactly the same size, there are slight differences between the two printing nozzles due to production-related differences. This results in small fluctuations in the achieved pixel size...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/175B41J29/38
CPCB41J2/175B41J29/38B41J2/2146B41J2025/008G06K15/027H04N1/6027H04N1/407H04N1/603B41J2/2054B41J2/2132B41J29/393B41J2029/3935H04N1/4078H04N1/6097
Inventor A·豪克
Owner HEIDELBERGER DRUCKMASCHINEN AG