A method of printing and printing spectral color separation for metamerism anti-counterfeiting
A technology of metamerism and spectrum, which is applied in the field of printing and spectral color separation for anti-counterfeiting of metamerism, can solve the problems of applicability, flexibility and rationality, and improve efficiency and accuracy, and facilitate implementation Effect
Active Publication Date: 2016-10-12
永发印务(东莞)有限公司
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[0008] The purpose of the present invention is to provide a printing and printing spectral color separation method for metamerism anti-counterfeiting, so as to solve the problem that the applicability, flexibility and rationality of the current printing and packaging anti-counterfeiting technology cannot be balanced
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[0032] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0033] Such as figure 1 The illustrated embodiment provides a printing and printing spectral color separation method for anti-counterfeiting of metamerism, which improves the accuracy and efficiency of preparing metamerism samples for printing and printing technology to a certain extent.
[0034] In this embodiment, a CMYK four-color inkjet printing system and FANTAC 210 g high-gloss photo paper are used, wherein CMYK is the English abbreviation for four colors of Cyan, Magenta, Yellow and Black. It should be noted that the present invention is not limited to four-color printers and specific paper...
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The invention discloses a printing spectrum color-separating method facing to metamerism anti-fake. The method comprises the following steps: realizing the reasonable selection of metamerism anti-fake detection light source according to Pearson's correlation coefficient computation; modeling in high precision in combination with the color generation characteristic of the printing device through the color scientific correlation computation formula so as to realize the accurate preparation of a metamerism sample; obviously improving the efficiency and accuracy of the metamerism sample preparation by using a multi-level screening method. In the metamerism sample preparation aspect facing to the printing technology, the method disclosed by the invention is more accurate in comparison with the existing method, and the implementation is convenient. After determining the preparation flow the metamerism sample, the design and the production of the metamerism anti-fake product in the printing and the package field can be realized through the printing mode in combination with various pattern design.
Description
technical field [0001] The invention belongs to the technical field of printing and packaging anti-counterfeiting, and in particular relates to a printing and printing spectral color separation method for metamerism anti-counterfeiting. Background technique [0002] In color science, metamerism is the phenomenon in which samples of different colors match under certain lighting and viewing conditions, but do not match under other lighting and viewing conditions. From the perspective of chromaticity, the occurrence of this phenomenon is determined by the formation mechanism of the color tristimulus value. The tri-stimulus value of color refers to the color perception produced by the human eye when it perceives external light signal stimulation, and its essence is an integral response formed in the human visual center by the spectral reflectance of the color material under the influence of lighting conditions and human eye perception characteristics. , as shown in formula (1):...
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IPC IPC(8): G01N21/25
Inventor 肖武陈俊忠杨国光葛纪者万晓霞刘强
Owner 永发印务(东莞)有限公司