The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 04, 2020
Filed:
Mar. 21, 2017
Canon Kabushiki Kaisha, Tokyo, JP;
Shinya Yasuda, Yokohama, JP;
Kimihiro Fujimoto, Kawasaki, JP;
Dexu Zhang, Yokohama, JP;
Takamune Suzuki, Yokohama, JP;
Toshihiro Takai, Oyama, JP;
Yutaka Takahashi, Kawasaki, JP;
Takahiro Harigae, Bando, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
In a three-dimensional modeling apparatus, diffusion of fumes generated around the modeling stage accompanying irradiation with an energy beam can be efficiently prevented. Three-dimensional modeling is performed by repeating scanning a modeling material arranged on a modeling stage with laser light to form a solidified layer. A cover is provided that locally surrounds an irradiation portion on the modeling material arranged on the modeling stage irradiated with the laser light, and suppresses diffusion of the fumes caused by irradiation with the laser light. In the cover, a stream of gas containing the fumes is regulated so as to cause the fumes to flow toward an upward portion inside the cover apart from the irradiated portion irradiated with the laser light.