Characterization and detection method of native-surface laser paper color characteristics

A color characteristic and detection method technology, applied in the direction of color/spectral characteristic measurement, etc., can solve problems such as high equipment requirements, difficulty in ensuring detection stability, and complicated detection process

Inactive Publication Date: 2014-04-09
SHENZHEN KECAI PRINTING +1
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Problems solved by technology

However, the problems of these methods are that the detection process is complicated, the equipment requirements are high, and the detection stability is difficult to guarantee, etc., which still cannot meet the application requirements in actual production.

Method used

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  • Characterization and detection method of native-surface laser paper color characteristics
  • Characterization and detection method of native-surface laser paper color characteristics
  • Characterization and detection method of native-surface laser paper color characteristics

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Embodiment Construction

[0044] The implementation test process and analysis are described below in conjunction with the accompanying drawings and examples to further illustrate the present invention, but they cannot be used to limit the scope of the present invention.

[0045] In product quality control, there are often standard samples and test samples. The standard sample is the reference standard for the enterprise as a quality standard, and the test sample is the product in production.

[0046] Embodiment Take the plain gold laser standard sample of 20mm * 20mm (called the gold standard sample) and the detection sample (called the gold comparison sample) respectively; and the plain silver laser standard sample of 20mm * 20mm (called the silver standard sample) ) and two test samples (called silver samples). The square grating structure of the two types of laser paper is as follows: image 3 As shown, the bright part is the part of the exposed substrate, the dark part is the part of the grating m...

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Abstract

The invention discloses a characterization and detection method of native-surface laser paper color characteristics. CIELab color values of a native-surface laser paper sample are measured by use of geometrical conditions of diffusion light illumination and near-surface normal-direction light reception, wherein C * and hab value are used for evaluation of basic color characteristics of native-surface laser paper. A linear uniform white light source is used to irradiate the native-surface laser paper sample from light source line length direction along one side length direction of a square grating of the native-surface laser paper sample, and a linear pixel array light receiver receives reflected light of the sample on the sample surface in the normal direction parallel to the linear light source; reflected light information of all tiny surface elements on a certain area of the sample is obtained; the reflected light information is converted into CIELab color information for evaluation of color characteristics of iridescence of the native-surface laser paper; and color fluctuation factors are used for characterization of granular sensation of color on the sample surface. The method is simple, fast, and suitable for color quality control application of the native-surface laser paper and printing colors thereof.

Description

technical field [0001] The invention relates to a characterization and detection method for the color properties of plain laser paper, which can be used for the characterization, detection and evaluation of the color properties of gold and silver grating-based plain laser paper, and for the color quality of plain laser paper and its packaging printed matter control. Background technique [0002] Plain laser paper is a commonly used packaging material for high-end tobacco and alcohol products. This kind of paper is attached with a periodic square grid-like grating. Under non-diffused white light, different colors will be seen from different angles. The dynamic flashing iridescent colors greatly increase the additional quality of the product. [0003] The so-called golden surface laser paper is a laser paper with a square transparent grating pressed on a golden yellow paper base. If you turn the laser paper back to the indoor light and face the diffuse light on the wall, you...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/25
Inventor 徐艳芳李斯潘民强陈训保黄小告胡秀丽
Owner SHENZHEN KECAI PRINTING
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