By Richard Romano, WTT.com
Published: November 7, 2016
“You print by layering up the varnish to get the height that you need to create a 3D effect,” said Babak Amoozgar, Jeti Applications Specialist for Agfa Graphics. “Since it’s done with varnish, you don’t need special lenticular media.”
The 3D effect itself is governed by a combination of substrate thickness, lens size, and lens height. Agfa offers three substrate thicknesses—3mm, 5mm, and 9mm—and for each thickness there are two different lens widths and six different depths. Different combinations will yield different effects, from an image that “pops” out of the background, or, conversely, appears to sink into the background. Printing both the image and the lenses is said to take between 20 and 30 minutes, depending on how much layering is required to build the lenses to the correct height.
One advantage to using a circular dot pattern rather than traditional lenticles is that registration doesn’t need to be as precise. “Even if your pattern is mis-registered slightly, you’ll still get the pattern,” said Amoozgar, and the effect will still work.
The smallest image that can be printed is about two inches by two inches, with the largest being the maximum board size of the Jeti Mira, which is about 106 by 60 inches.
At present, the effect works best on very simple images, like geometric shapes. “You won’t be able to get someone’s face, for example, in 3D, because there’s too much detail,” said Amoozgar. “Usually vector images work best.”
The effect adds depth to a flat image, or even causes the background to change as the viewer walks past it. “We can change the color background,” said Amoozgar. “It turns green, then as you walk past it turns purple, then back to green.”
The goal is to make signage dynamic without needing to monkey around with dynamic digital signage. “It’s hard to get someone to look at a sign because most of the image is static,” said Amoozgar. “If you have a moving background, it will capture more attention.” He also cited one Agfa customer who is using 3D Lens Technology for fine-art applications—much like the Digital Atelier used lenticular printing for fine art back in the 1990s—and others are using it for décor. “We’re seeing more use in interior design applications,” said Amoozgar, “such as displays in buildings and front-desk backgrounds in offices.”
Future applications could include billboards, but that is still some years away.
Agfa’s 3D Lens Technology uses a combination of a moiré effect
and small, spherical lenses to impart a lenticular-like 3D effect to an
image. More detailed images’—like the doughnut—require larger lenses.