0856393-A2 is referenced by 4 patents and cites 13 patents.

A method for producing a laminated object repeats a depositing step and an irradiating step alternatively. The irradiating step comprises the operations of: covering a deposited layer with a mask having a pattern configuration for penetrating the laser beam; and scanning the laser beam on the deposited layer covered with the mask in such a manner that the laser beam depicts an irradiated continuous wave trace being wider than the pattern configuration of the mask, by moving the laser beam in the Y-direction with a Y-rotating mirror, while repeating oscillations of the laser beam in the X-direction with a X-rotating mirror. The laminated object may be a casting mold. In a second aspect of the invention, laser beam energy is adjusted depending on detected material temperature.; In a third aspect of the invention, depositing means and previously deposited material layers are kept apart to prevent friction. In a fourth aspect of the invention, thickness detecting means are used to correct the thickness fluctuations between subsequent layers. In a fifth aspect of the invention, several apparatuses are used with a common irradiating means. In a sixth aspect of the invention, a mask holder is used that can carry several masks, and while irradiating means are being discharged on the deposited layer covered with a mask, at least one other mask is being exchanged.

Title
Method for producing a laminated object and apparatus for producing the same
Application Number
EP19980101493 19980128
Publication Number
0856393 (A2)
Application Date
January 28, 1998
Publication Date
August 5, 1998
Inventor
Sato Hiromoto
JP
Ozaki Motoaki
JP
Otsuka Yukio
JP
Assignee
Toyota Motor
JP
IPC
B23K 26/06
B29C 67/00
B29C 67/00
B29C 41/34
B23K 26/06
B29C 67/00
B29C 41/36
B23K 26/06
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