The color changes of the 100 yuan optically variable ink are as follows:
The bell-shaped pattern on the 100 dollar bill is printed with optically variable ink, and its color changes from copper to green. $100 Starting with the 1996 edition, it features variable ink. According to the query of public information, the 100 US dollars uses variable light ink from the 1996 version. Its color changes from green to black, and the 100 US dollars appears pink under a purple light.
How to observe the color of optically variable ink
The denomination numbers "100" and "50" in the lower left corner of the front of the fifth set of RMB 100 and 50 yuan are printed using optically variable ink . When observing the coupon vertically, "100" appears green and "50" appears golden; when observing the coupon obliquely, "100" turns blue and "50" turns green.
Optically variable ink color
Optically variable ink is also called optically color-changing ink and chameleon. The printed color block presents a pair of colors, such as: red-green, green-blue, gold- Silver etc. When viewed from the front or side under white light, as the viewing angle of the human eye changes, two different colors appear. The light change characteristics are strong, the color difference changes greatly, and the characteristics are obvious. It can be identified without any equipment.
The color angle effect cannot be copied by any high-definition scanner, color copier and other equipment, and the printing characteristics cannot be imitated by any other ink and printing method. The anti-counterfeiting reliability is extremely strong, so it is used by the world Many countries have designated it for the most stringent and difficult anti-counterfeiting of currency and securities. Some well-known domestic manufacturers have also used it for packaging anti-counterfeiting.
Characteristics of the color of optically variable ink
The most significant feature of optically variable ink is color change, which can show different colors under different light exposures. Generally speaking, the color change range of photochromic ink includes two colors, namely base color and color change.
The base color is the color of the optically variable ink under ordinary light, while the color change is the color under special light such as ultraviolet, infrared, and fluorescent lamps. For example, if a photochromic ink has a base color of red and changes color to green, it will be red under ordinary light and will turn green under ultraviolet irradiation.
Photochromic ink color manufacturing method
The manufacturing method of this kind of ink is generally to dissolve the photochromic pigment in a solvent to make a miniature pigment capsule, in which the dissolved pigment is Add adhesives according to different uses. A better manufacturing method is to dissolve the photochromic pigment into superposed monomers, crush this type of polymer ultrafine particles, and make a powder for use as a pigment.
The light fastness of the ink made by this method is 10 times higher than that of microcapsule ink. These powders can be added as pigments to water-based inks, oil-based inks, plastic inks and all adhesives.