Title:
歪みの少ない三次元物体をステレオリソグラフィーで形成する方法および装置
Document Type and Number:
Japanese Patent JP4015339
Kind Code:
B2
Abstract:
A rapid prototyping and manufacturing (e.g. stereolithography) method and apparatus for making three-dimensional objects on a layer-by-layer basis by selectively exposing layers of material to prescribed synergistic stimulation including forming portions of a lamina using a first exposure (52), allowing a time delay (54), and then applying a second exposure (56). The time delay is sufficient to allow shrinkage of the material to occur that results from the first exposure. It is preferred that the solidified portion resulting from the first exposure does not adhere to the previously formed lamina. It is also preferred that the portion solidified by this first exposure does not adhere to any boundary region that may have been exposed and adhered to the previously formed lamina. The time delay associated with a given cross-sectional region may be occupied by exposing other cross-sectional regions. The delay may occur between two exposures of overlaying hatch or fill vectors. The delay may alternatively occur between exposure of hatch vectors and boundary vectors. The time delay may be determined by a clock, or alternatively, the time delay may be considered to have lapsed upon certain physical conditions being met, such as detecting the amount of shrinkage and determining that it has progressed far enough for the second exposure to occur.
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| JPH091673 | LIGHT BEAM SCANNING MOLDING METHOD AND DEVICE THEREFOR |
| WO/2015/197794 | THREE-DIMENSIONAL PRINTING DEVICE |
Inventors:
Michelle Dee Gartin
Charles W Hull
Hop Dee Newen
Charles W Hull
Hop Dee Newen
Application Number:
JP2000031242A
Publication Date:
November 28, 2007
Filing Date:
February 08, 2000
Export Citation:
Assignee:
3D Systems, Inc.
International Classes:
B29C67/00; B29C35/02; B29C35/08; B29C41/02; G05B19/4099; G06F17/50; G06F19/00
Domestic Patent References:
| JP9001673A | ||||
| JP6297585A | ||||
| JP7094149B2 | ||||
| JP7057532B2 | ||||
| JP2671534B2 | ||||
| JP6270265A |
Attorney, Agent or Firm:
Yanagita Seiji
Go Sakuma
Go Sakuma