TECHNOLOGY
OCRE [Pattern Technology]
OCRE (Optical Chemical Relief Etching) is one of HUAGONG IMAGE TECHNOLOGY AND DEVELOPMENT CO., LTD's patent technology. It is a kind of DOVIDs, which contains a large volume of information. The information can be in shape, words or cipher text. This will prevent counterfeiters from attempting to make a fake label.
The differences between OCRE and laser covert image are mainly three.
(1) Laser covert image can only be found in a certain angle by laser beam, while OCRE have no requirement for the laser beam angle. That is, you can find the covert image from any angle.
(2) OCRE is not only an optical device. If anyone attempts to use the 2-step copy (Use a laser beam to point at the place where the covert image hide, and make an exposure on a photosensitive plate), the chemical character of OCRE will loss a large ratio of information.
(3) Laser convert image is color-changing. OCRE creates a diamond glitter impression without any color-changing. It can easily be distinguished from hologram.
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