The problem with most 3D printers available to consumers is that they have a difficult time producing intricate details and patterns smoothly. There are several reasons for this:
Well, it looks like some clever engineers in Japan have figured out a "hack" (don't worry, it's legit) to solve this problem. They have figured out a way to add instructions that would that would allow the printer to vary the thinkness of the material as it prints. This will allow for smoother edges.
The significance of this is that it is all done using existing software and hardware that is already out there! No new hardware is required! That means that if you currently have a 3D printer using FDM technology, which stands for Fused Deposition Modeling (most affordable printers use this technology), then you could use this technique without significant upgrade costs.
Man, how I love a good hack like this!