Consumables
HoloPrint works by applying a thin layer of lacquer at the exact spot where a hologram is needed, and then apply the holographic printing and curing process to that spot. The lacquer is called the Casting Lacquer, X29.
The resulting holographic structure can optionally be closed with another lacquer, referred to as TRIP-34.
Holographic Casting Lacquer, X29
Stensborg offers the holographic casting laquer X29 in large volumes.
In contrast with commercially available standard UV-curable lacquers, X29 is specially formulated for ultra-high-resolution holographic printing using the HoloPrint process.
If you have a special requirement, we can produce customized versions of this X29 lacquer that can be used with non-UV light sources and can be optimised for most wavelengths ranging from UV to NIR.
Optional high refractive index (HRI) lacquer
TRIP-34
To make the resulting holographic structure – which is a surface relief in the X29 lacquer – impervious to physical tampering and smudging from fingerprints, Stensborg offers a complementary Tailored Refractive Index Protection lacquer called TRIP-34 that can be used to close the structure.
TRIP-34 is fully integrated with the in-line process of Holoprint, making it possible to use pre-metallized material with a printable protective layer on the hologram.
Technical Details
The refractive index of X29 is measured to 1.544 @ 555 nm and the refractive index on TRIP-34 is measured to 1.846 @ 555 nm, providing a refractive index difference of 0,302 @ 555 nm.
The refractive indices of the two lacquers across a wider range of wavelenghts is illustrated below:
