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1.发明申请公开(公告)号：US20160339646A1
公开(公告)日：2016-11-24
申请号：US15230809
申请日：2016-08-08
Applicant: Stratasys, Inc.
Inventor： James Baecker , J. Samuel Batchelder
CPC classification number: B29C64/386 , B29C64/141 , B29K2105/251 , B33Y10/00 , B33Y30/00 , B33Y40/00 , B33Y50/02 , G03G15/1625 , G03G15/224 , G03G15/225
Abstract: In a method for printing a three-dimensional (3D) parts with an additive manufacturing system, a developed layer of an electrically charged powder material is produced on a transfer medium using an electrophotographic (EP) engine. The transfer medium and the developed layer are fed in a feed direction. A position of the developed layer on the transfer medium is detected using a first sensor having a first output that indicates the position. A position of a moveable build platform is adjusted relative to the transfer medium to reduce one or more overlay errors between the developed layer and an intermediate build surface of a three-dimensional structure retained on the moveable build platform based on the first output. The developed layer is transferred to the intermediate build surface using a pressing element.
Abstract translation: 在用添加剂制造系统印刷三维（3D）部件的方法中，使用电子照相（EP）发动机在转印介质上制造带电粉末材料的显影层。 转印介质和显影层沿进给方向进料。 使用具有指示位置的第一输出的第一传感器来检测显影层在转印介质上的位置。 基于第一输出，可移动构建平台的位置相对于传送介质进行调整，以减少开发层与保留在可移动构建平台上的三维结构的中间构建表面之间的一个或多个重叠错误。 使用按压元件将显影层转移到中间构建表面。
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公开(公告)号：US09919479B2
公开(公告)日：2018-03-20
申请号：US15230809
申请日：2016-08-08
Applicant: Stratasys, Inc.
Inventor： James Baecker , J. Samuel Batchelder
CPC classification number: B29C64/386 , B29C64/141 , B29K2105/251 , B33Y10/00 , B33Y30/00 , B33Y40/00 , B33Y50/02 , G03G15/1625 , G03G15/224 , G03G15/225
Abstract: In a method for printing a three-dimensional (3D) parts with an additive manufacturing system, a developed layer of an electrically charged powder material is produced on a transfer medium using an electrophotographic (EP) engine. The transfer medium and the developed layer are fed in a feed direction. A position of the developed layer on the transfer medium is detected using a first sensor having a first output that indicates the position. A position of a moveable build platform is adjusted relative to the transfer medium to reduce one or more overlay errors between the developed layer and an intermediate build surface of a three-dimensional structure retained on the moveable build platform based on the first output. The developed layer is transferred to the intermediate build surface using a pressing element.
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3.发明申请公开(公告)号：US20170192382A1
公开(公告)日：2017-07-06
申请号：US15386853
申请日：2016-12-21
Applicant: Stratasys, Inc.
Inventor： James Baecker
CPC classification number: B33Y30/00 , G03G15/1625 , G03G15/224 , G03G15/24 , G03G15/6585 , G03G2215/1695
Abstract: A method of printing a part in an electrophotographic additive manufacturing system includes printing a part and associated support structure in a layer by layer manner, and providing a chamber in which printing is performed. The chamber is supported by a movable platform and the chamber is positioned about a movable platen. The movable platen is supported by the movable build platform. The movable platen is movable within the chamber on the movable build platform. An electrophotography-based additive manufacturing system for printing a three-dimensional part includes a transfer medium configured to receive and transfer imaged layers of a three-dimensional part, and a support from one or more imaging engines. The system includes a heater configured to heat the imaged layers on the transfer medium to at least a fusion temperature, and a layer transfusion assembly configured to transfuse the imaged layers to the build platen or a previously printed layer.
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