System and method for three dimensional model printing

    公开(公告)号:US10786983B2

    公开(公告)日:2020-09-29

    申请号:US15498498

    申请日:2017-04-27

    申请人: Stratasys Ltd.

    摘要: A scanning 3-D printing system comprises a printing platform movable in a printing direction and in an indexing direction, the printing platform comprising a printing head configured for dispensing building material while the printing platform is moving in a printing direction one pass at a time, and layer by layer, a roller configured for leveling the dispensed building material one pass at a time, wherein the roller is rotatably mounted on a roller axle, and wherein the roller axle extends over all passes of the printing system and is stationary in the indexing direction, a scraper configured for scraping excess building material off the roller, and a trough configured for collecting the building material scraped off the roller.

    Method and system for three-dimensional fabrication

    公开(公告)号:US10649438B2

    公开(公告)日:2020-05-12

    申请号:US15227049

    申请日:2016-08-03

    申请人: Stratasys Ltd.

    摘要: A method of three-dimensional fabrication of an object is disclosed. The method comprises: forming a plurality of layers in a configured pattern corresponding to the shape of the three-dimensional object, at least one layer of the plurality of layers being formed at a predetermined and different thickness selected so as to compensate for post-formation shrinkage of the layer along a vertical direction. In various exemplary embodiments of the invention spread of building material of one or more layers is diluted at least locally such as to maintain a predetermined thickness and a predetermined planar resolution for the layer.