This call for prior art is part of the EFF's effort to keep 3D printing open. Read about the initiative here, and check out Google Patents or the USPTO for full details about this particular application.
"Process for Producing Three-dimensionally Shaped Object and Device for Producing Same"
This application relates to 3D printing using laser sintering, a process capable of better resolution than traditional hobbyist 3D printing using thermoplastic extrusion, where the object is built in a chamber with a localized gas flow to capture fumes generated by the laser melting the powder.
BASIC APPLICATION DATA:
- App Number: 13/503,217
- Publication Number: US20120251378 A1
- Assignee: Panasonic Corporation
- Prior Art Cutoff Date: Prior Art predating October 21, 2009
- Availability for Challenge: Open Until at least April 4, 2013
APPLICATION OVERVIEW: This application claims the use of a chamber with a localized gas flow in laser sintering 3D printing. The 3D object is built in the chamber, and the localized gas flow captures the fumes resulting from the laser melting the powder in the process of building each layer of the object. If the fumes are not captured, they may interfere with the laser’s beam.
WHY IT MATTERS: The idea of a localized gas flow is not a new one, and is an obvious solution to the problem of fumes interfering with a laser beam. The open source community has begun to use laser sintering 3D printing methods, which promise of better resolution and a new variety of materials. This type of patent, which covers both the gas capture method and any devices using this method, could block a wide range of inventive activity.
Are you familiar with technology similar to that described in this patent application?
If so, please submit evidence of that prior art as an answer below. Please submit only one piece of prior art per answer below. We welcome multiple prior art proposals from the same individual; please create separate answers for each one. This is so the community can vet each individual piece of prior art independently.
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