OV-71 series color shifting optical variable ink

  OV-71 series color shifting optical variable ink

type : 7000series, 8000series, 9000series
printing way: screen , UVscreen and gravure

The Optical variable ink

widely used for cards as well as the label and packaging of cigarettes,wines, medicines and cosmetic.

product brief introduction:

Optically variable ink  is an anti-counterfeiting measure used on many major modern banknotes.

The ink displays two distinct colors depending on the angle the bill is viewed at. The United States fifty-dollar bill, for example, uses color shifting ink for the numeral 50 so that it displays copper at one angle and bright green in another. 

Color-shifting inks reflect various wavelengths in white light differently,  depending on the angle of incidence to the surface.    An unaided eye will observe this effect as a change of color while the viewing angle is changed. A color copier or scanner can copy a document only at one fixed angle relative to the document’s surface.

the optical variable ink has three kinds to meet cilents' different needs:

7000series: suggestion first prints the bottom color,if does not print black bottom have to use highly concentrated the printing ink, compared with the latter two kinds has the metal sense of reality.

8000 series: have to print the deep color bottom.

9000series: double change color must print the deep color bottom and the single color have to print white bottom.

Color:

7000series: silver-green, red-green,mauve-green, brown red-golden,magenta-golden,rose red-gloden,olivine-blue, verdancy-blue, grass green-purple, blue-mauve,green-purple,golden-argent

8000series: golden-green,red-green,green-blue, blue-purple black, bluegreen-purple

9000series: purple-green, green-purple,green-orange, colorless-golden, red, green,blue