Method and machine for digital printing of neutral colours

A digital printing and color technology, applied in the field of digital printing technology, can solve problems such as lack of quality

Active Publication Date: 2022-01-18
J F 巴伯兰拉托雷
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] Obviously all of this has the downside that in the lighter neutrals, that is, the closer the value of the lightness component is to 100 of pure white, it is easy to see black print dots and feel the lack of quality
These dots or "pixilation" of black (K) printing inks are due to the fact that the aforementioned neutral colors with lighter shades have a lower percentage of black (K) when printed, which directly results in Lost quality during printing

Method used

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  • Method and machine for digital printing of neutral colours
  • Method and machine for digital printing of neutral colours
  • Method and machine for digital printing of neutral colours

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Embodiment Construction

[0030] The present invention relates to a method of digitally printing with neutral colors by using a digital printing machine or printer to increase the color in neutral colors including neutral colors (absolutely neutral and near-absolutely neutral) or with shades of gray At least one digital print quality. Furthermore, the invention relates to a digital printing machine (inkjet) for carrying out the method.

[0031] A color can be defined according to a spatial Cartesian coordinate system defined by three vector axes (A, B, L), two of which correspond to the two chrominance components (A, B) that define hue and saturation, And the other one of the axes corresponds to the lightness component (L) which defines lightness or lightness.

[0032] A neutral or achromatic color in this specification is identified as a color whose two chromaticity components have values ​​equal to zero or close to zero. see figure 1 .

[0033] In the range defined from minus 100 (-100) to plus ...

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Abstract

The invention relates to a method and machine for digital printing of neutral colours, wherein the method involves using a digital printing machine, which comprises a print head that in turn comprises an ejector; providing a substrate to receive a digital print; providing a print product, which comprises at least one light black printing ink (LK) that has a lower concentration of black pigment than a black ink (K); arranging the ejector with the print product so that it is ready to eject the print product onto the substrate; and, performing the digital printing on the substrate by ejecting the print product according to a predefined design that comprises at least one neutral colour.

Description

technical field [0001] The present invention relates to the industry of digital printing technology dedicated to printing on substrates. Background technique [0002] Printing on substrates using digital printing techniques is known. Printing on substrates requires printing designs in various colors with the aid of printing inks in quite a few cases. Accordingly, a limited number of colors, mainly such as cyan (C), magenta (M) and yellow (Y), are generally used to obtain various desired colors. [0003] In order to prolong the use of printing inks of each of the mentioned colors in printing without having to reload etc., the printing solution by means of digital printing machines or printers, such as industrial inkjet "single pass" machines, is to use black (K) Printing inks, assuming that black (K) corresponds to adding cyan (C), magenta (M) and yellow (Y) together in similar proportions. [0004] Therefore, traditionally using black (K) printing ink for neutral color pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/21C09D11/40C09D11/322
CPCH04N1/54H04N1/6022B41M5/0023B41M5/0047B41M7/0081H04N1/40012
Inventor J·F·巴伯兰拉托雷
Owner J F 巴伯兰拉托雷
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