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Film for detecting laser paper and detecting method thereof

A detection method, the technology of laser paper, applied in the detection field, can solve the problems of laser color detection, the detection data is not instructive, and it is difficult to find the problem of ink strip printing

Active Publication Date: 2008-02-27
YUNNAN QIAOTONG PACKAGE PRINTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] When printing with light column laser paper, because there is no good color detection method (color difference meters at home and abroad cannot detect the color of laser), if the color is detected after screen printing is used, the color difference of the produced products will be large. Not only the scrap rate is high, but also received many complaints from customers
Use a colorimeter to control the difference in hue, but using a colorimeter on light column laser paper, the test data is not instructive
In addition, in the production process of laser paper and other products, it is difficult to find printing problems such as "concealed bars" and "ink strips" with the existing technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Make a 90%±10% flat screen film, expose it on a screen plate with 420±100 screen lines and scrape 12±8 layers of glue, make a printing plate, and print snowflakes on the blank film on the printing plate The ink is made into a film for detecting laser paper.

[0025] Detection method:

[0026] Use relative comparison method: for the detection of hue when printing expensive cigarette clamshells, expensive cigarette cartons and other products: take 100×200mm laser paper to test the film, and then take the laser paper to test half of the hue sample standard of the film, and stick it on the back of the film Make a test standard, and then use this standard to compare and test other products;

Embodiment 2

[0028] It is directly used to detect the "concealed bars" and "drawing ink sticks" of products such as Ruyiyun cigarette boxes, expensive cigarette boxes, and expensive cigarette flip covers.

[0029] Take a 100×200mm laser paper to inspect the film, face up, and put it on the laser paper to detect quality problems such as "concealed bars" and "ink bars" that are difficult to observe with the naked eye.

Embodiment 3

[0031] Applied to hue measurement tools: for example, it is used for the detection of hue control of expensive cigarette cartons, expensive cigarette clamshells and other products.

[0032] Take a 20×30mm laser paper to test the film, put it face up at the light hole of the colorimeter, and use the colorimeter to directly measure its Lab value on the rainbow laser paper or its printed matter—that is, the color difference.

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PUM

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Abstract

This invention is a sort of the Pholin which is used to check the radium paper. it is characterized in that it is executed in this way: the flat gauze Pholin of 90%+-10%, it is exposed in the silk screen which have the reticle of 420+-100 and the glue which is scraped as many as 12+-8 floor, then it is executed the block. This block is stamped the snowflake printing ink in the empty Pholin, thus it becomes this Pholin which is used to check the radium paper. Making this invention to apply to the color measuring tool (its principle is the same with the color filter) in order to measure its LAB, it can control the color aberration (color) of the good production, also can be used for checking the color of the paper. In producing the radium paper, it finds hardly the printing problem of the 'dark-bar' and the 'draw-ink-bar'. This problem can be checked soon by using this technique. Also it can be executed a opposite color measuring standard by this Pholin, then it contrasts and checks the color of her production by this standard.

Description

technical field [0001] The invention relates to the technical field of detection, in particular to a film for detecting laser paper and a detection method. Background technique [0002] With the continuous improvement of anti-counterfeiting technology in cigarette pack printing, more and more high-end cigarette packs adopt laser holographic anti-counterfeiting technology. Printing on rainbow holographic laser paper has become the trend of high-end cigarette pack printing. In recent years, there have been more and more high-tech products. High-end cigarette packs are basically printed on rainbow holographic paper. [0003] Because the rainbow holographic laser paper has "laser light" (also known as "rainbow light", named because its color changes with the angle), the colorful colors bring great difficulties to the detection of printed colors, and even the same There is a difference between the hue seen under natural light and the standard light source, and the difference see...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03F5/00G01J3/00
Inventor 周道明
Owner YUNNAN QIAOTONG PACKAGE PRINTING
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