MRW wrote:Diego,
Carima has similar technology called C-Cat.
http://www.carima.com/ko/node/138
Claims 400x faster than current DLP.
Are they infringing on your patent also?
Nexa has a machine ready for production.
The battle over technology ownership will be fought in court and unlikely to negatively effect the end purchaser of any product with this technology. I'm backing Nexa3D's NX1
markjr wrote:Guys is it curious that this thread has only new users
Seriously, no problem with anybody of you!!!! Follow me on Twitter for update on my new mobile venture!
MRW wrote:Diego,
Carima has similar technology called C-Cat.
http://www.carima.com/ko/node/138
Claims 400x faster than current DLP.
Are they infringing on your patent also?
Nexa has a machine ready for production.
The battle over technology ownership will be fought in court and unlikely to negatively effect the end purchaser of any product with this technology. I'm backing Nexa3D's NX1
kostja wrote:Hi, an interesting topic.
In my opinion, here is the technique in this patent: http://www.google.com/patents/US4575330 well described.
As will be apparent from FIG. 4 of the drawings, there is shown on alternate configuration for a stereolithograph worin the UV curable liquid 22 or the like floats on a heavier UV transparent liquid 32 Which is non-miscible and non-wetting with the curable liquid 22. By way of Example , ethylene glycol or heavy water are suitable for the intermediate liquid layer 32. In the system of FIG. 4, the three-dimensional object 30 is pulled up from the liquid 22, rather than down and Further into the liquid medium, as shown in the system of FIG. . 3
The UV lightsource 26 in FIG. 4 Focuses the spot 27 at the interface between the liquid 22 and the non-miscible intermediate liquid layer 32, the UV radiation passing through a suitable UV transparent window 33, of quartz or the like, supported at the bottom of the container 21. The curable liquid 22 is provided in a very thin layer over the non-miscible layer 32 and thereby has the advantage of limiting layer thickness Directly, rather than relying of solely upon adsorption and the like to limit the depth of curing, since ideally on ultrathin lamina is to be provided. Hence, the region of formation will be more sharply defined and some surfaces will be FORMED smoother with the system of FIG. 4 than with That of FIG. 3. In addition, a smaller volume of UV curable liquid 22 is required, and the substitution of one curable material for another is easier.
The patent has expired and may be used.
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