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Computer coloring method for color printing ink

A computer color matching and ink technology, applied to printing machines, general parts of printing machinery, printing, etc., can solve the problems of single color matching theory, lack of robustness and fault tolerance, and no flexible use, etc., to achieve excellent robustness and the effect of fault tolerance

Active Publication Date: 2015-01-28
广东理想彩色印务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This patent solves the CIE theory based on the "standard chromaticity observer XYZ tristimulus value", and there are problems such as color balance and color difference calculation. However, this technical solution uses a single color matching theory, which lacks robustness and fault tolerance (even if there are wrong parameters Or data loss will not cause the system to crash), and in terms of applicability, there is no possibility of flexible use in the processing of various practical tasks

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A color printing ink computer color matching method, comprising the following steps:

[0018] Step 1. Set the color difference value according to the color difference requirements of the incoming sample. When the color difference is greater than 1.5, use the Kubelka-Munk color matching method. When the color difference is less than or equal to 1.5, use the neural network color matching method. Kubelka-Munk theory based computer reflectance spectroscopy color matching (the computer reflectance spectroscopy, and computer reflectance spectroscopy color matching, computer color matching approximation algorithm, computer color matching method based on BP neural network are all existing conventional means, so No more details in the embodiment), the neural network color matching method adopts a computer color matching method based on BP neural network;

[0019] Step 2, use an electronic balance to weigh the weight of the offset paper and coated paper without printing ink, and ...

Embodiment 2

[0024] A color printing ink computer color matching method, comprising the following steps:

[0025] Step 1. Set the color difference value according to the color difference requirements of the incoming sample. When the color difference is greater than 1.5, use the Kubelka-Munk color matching method. When the color difference is less than or equal to 1.5, use the neural network color matching method. The described color matching method uses Kubelka -Munk theory-based spectral visual matching method for color matching, the neural network color matching method adopts a computer color matching method based on BP neural network;

[0026] Step 2, use an electronic balance to weigh the weight of the offset paper and coated paper without printing ink, and record the number and weight; print several splines with cyan, magenta, and yellow inks on the offset paper and coated paper separately , and take five splines from offset paper and coated paper respectively as spot color standard s...

Embodiment 3

[0029] A color printing ink computer color matching method, comprising the following steps:

[0030] Step 1. Set the color difference value according to the color difference requirements of the incoming sample. When the color difference is greater than 1.5, use the Kubelka-Munk color matching method. When the color difference is less than or equal to 1.5, use the neural network color matching method. The described color matching method uses Kubelka -Munk theory-based computer color matching approach algorithm color matching, the neural network color matching method adopts a computer color matching method based on BP neural network;

[0031] Step 2, use an electronic balance to weigh the weight of the offset paper and coated paper without printing ink, and record the number and weight; print several splines with cyan, magenta, and yellow inks on the offset paper and coated paper separately , and take five splines from offset paper and coated paper respectively as spot color sta...

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PUM

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Abstract

The invention provides a computer coloring method for color printing ink. The computer coloring method for color printing ink includes: setting a chromatic aberration value according to chromatic aberration requirements of a sample, adopting a Kubelka-Munk coloring method when the chromatic aberration is larger than 1.5, and adopting a neural network coloring method when the chromatic aberration is smaller than 1.5, wherein the Kubelka-Munk coloring method can be one of a spectrum vision matching method, a computer reflection spectroscopy and a computer coloring closing algorithm which are based on the Kubelka-Munk theory, and the neural network coloring method can be a computer coloring method based on a BP (back propagation) neural network. Favorable coloring methods can be chosen automatically according to different practical situations during color printing, and the computer coloring method for color printing ink is excellent in robustness and fault tolerance by the aid of the neural network technology.

Description

technical field [0001] The invention relates to the technical field of color printing, in particular to a computer color matching method for color printing ink. Background technique [0002] Color matching refers to the operation process of preparing ink with a specific color and performance in proportion with as few color ink varieties and auxiliary agents as possible according to the color requirements of the original manuscript. [0003] With the improvement of living standards, people have higher and higher requirements for the color of printed matter, especially color printed matter. In addition, due to the rapid development of computer technology, many computer ink color matching systems have appeared, but there is still no color matching system that can better adapt to various printing companies and various ink raw materials. In printing color matching, the establishment of the ink color matching system is first of all complicated. The computer color matching system ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41F33/00G01J3/46
Inventor 古云海
Owner 广东理想彩色印务有限公司
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