Stratasys Ltd. Patent applications |
Patent application number | Title | Published |
20160107383 | SOLID FREEFORM FABRICATION OF SHELLED OBJECTS - A method of layerwise solid freeform fabrication is disclosed. The method comprises, for each of at least a few of the layers, dispensing and hardening at least a first modeling material and a second modeling material to form a core region and one or more envelope regions at least partially surrounding the core region. In some embodiments, the ratio between the elastic moduli of adjacent regions, when hardened, is from about 1 to about 20. | 04-21-2016 |
20160039120 | POLYMER BASED MOLDS AND METHODS OF MANUFACTURING THERE OF - Polymer-based molds and methods of manufacturing are described. The method includes depositing two or more layers of a first material having a glass transition temperature (Tg) lower than about 70° C., in order to form a first portion of the mold and then depositing two or more layers of a second material having a Tg higher than about 80° C. to form a second portion of the mold. The method may further include depositing two or more layers of a material having a Tg lower than about 70° C. forming a third portion of the mold to cover the second portion. | 02-11-2016 |
20160019319 | SLICING AND/OR TEXTURING FOR THREE-DIMENSIONAL PRINTING - A method for slicing a three-dimensional model for printing of a corresponding object by a 3D printer, comprises: obtaining the envelope of the object as polygons, then for each region of a predefined work area within the slicing plane: | 01-21-2016 |
20150360417 | SYSTEM AND METHOD FOR THREE DIMENSIONAL MODEL PRINTING - A scanning | 12-17-2015 |
20150210010 | SOLID FREEFORM FABRICATION USING A PLURALITY OF MODELING MATERIALS - A system and methods for solid freeform fabrication of an object is disclosed. The system comprises a solid freeform fabrication apparatus having a plurality of dispensing heads, a building material supply apparatus configured to supply a plurality of building materials to the fabrication apparatus, and a control unit configured for controlling the fabrication apparatus and the supply apparatus based on an operation mode selected from a plurality of predetermined operation modes. | 07-30-2015 |
20150158244 | Object Of Additive Manufacture With Encoded Predicted Shape Change And Method Of Manufacturing Same - The combination of 3D printing technology plus the additional dimension of transformation over time of the printed object is referred to herein as 4D printing technology. Particular arrangements of the additive manufacturing material(s) used in the 3D printing process can create a printed 3D object that transforms over time from a first, printed shape to a second, predetermined shape. | 06-11-2015 |
20150035186 | SYSTEM AND METHOD FOR DEPOSITING LIQUIDS - A printing head for a printing system is disclosed. The printing head comprises a plurality of compartments, each having an outlet port for depositing liquid and an inlet port separately connectable to a separate liquid container. At least two compartments are in controllable fluid communication with each other, and the printing head comprises an arrangement of sensors configured for generating signals indicative of (i) a filling state of each compartment, and (ii) a fluid communication state between the at least two compartments. | 02-05-2015 |
20140312535 | SYSTEM AND METHOD FOR FABRICATING A BODY PART MODEL USING MULTI-MATERIAL ADDITIVE MANUFACTURING - A method for physically reconstructing a body part using multi-material additive manufacturing includes receiving image data of the body part in the form of arrays of voxels, each array of voxels representing image data pertaining to cross-section of the body part, translating the image data in the arrays of voxels to printable bitmap images representing combinations of modeling materials for reconstructing the body part, and dispensing the combinations of modeling materials responsive to the bitmap images in a layerwise manner. | 10-23-2014 |
20140265032 | SYSTEM AND METHOD FOR THREE-DIMENSIONAL PRINTING - Methods and apparatus for preparing a layer of an object being fabricated by a three-dimensional printing process. Embodiments of the invention combine selective deposition with selective curing to benefit from the respective advantages of both techniques. Multiple printing heads deposit a two-dimensional cross section of the object being fabricated on a substrate which is transparent to curing radiation. The multiple printing heads selectively deposit different object body materials in different regions of the cross section and also selectively deposit regions of support material as necessary. The transparent substrate is then moved into registration with the object being fabricated so that the new layer is in contact with the object body, and an ultraviolet two-dimensional image of the cross section is projected through the substrate to selectively cure the new layer. | 09-18-2014 |
20140175706 | METHOD FOR PRINTING OF THREE-DIMENSIONAL OBJECTS - A method for forming three dimensional objects is disclosed. The method includes printing building material, layer by layer, to form a three dimensional object on a printing tray by moving a printing block that comprises a printing head , at least two curing sources and a leveler in forward and reverse passages. The printing is done by moving the printing block in a forward passage when the distance between the printing block and the printing tray is such that the leveler does not touch a layer being built, adjusting a height position of the printing tray relative to the printing block prior to printing a reverse passage and moving the printing block in the reverse passage, wherein during the reserve passage the leveler touches and levels the layer being built. | 06-26-2014 |
20140110872 | SYSTEM AND METHOD FOR ADDITIVE MANUFACTURING OF AN OBJECT - The method comprises sequentially forming a plurality of layers in a configured pattern corresponding to the shape of the object, thereby forming the object. The formation of each layer comprises dispensing at least one uncured building material, and at least partially curing the uncured building material, wherein for at least one layer, the curing is initiated at least t seconds after commencement of curing of a layer immediately preceding that layer. The t parameter is longer than the number of seconds required for the formation of the layer. | 04-24-2014 |
20140036455 | SYSTEM AND METHOD FOR ADDITIVE MANUFACTURING OF AN OBJECT - A method of additive manufacturing of a three-dimensional object is disclosed. The method comprises sequentially forming a plurality of layers each patterned according to the shape of a cross section of the object. In some embodiments, the formation of at least one of the layers comprises performing a raster scan to dispense at least a first building material composition, and a vector scan to dispense at least a second building material composition. The vector scan is optionally along a path selected to form at least one structure selected from the group consisting of (i) an elongated structure, (ii) a boundary structure at least partially surrounding an area filled with the first building material, and (iii) an inter-layer connecting structure. | 02-06-2014 |
20130337277 | DEGRADABLE MATERIAL FOR USE IN THREE DIMENSIONAL PRINTING AND METHOD FOR PREPARING THE SAME - A liquid composition for producing a self-destructible temporary structure by additive manufacturing is provided. The liquid composition includes a biosynthetic copolymer as a degradable component and an enzyme as a disintegrating agent, the disintegrating agent is capable of disintegrating the degradable component, wherein after exposure to an external trigger, the disintegrating agent gradually degrades the degradable component. | 12-19-2013 |
20130241114 | SYSTEM AND METHOD FOR ADDITIVE MANUFACTURING OF AN OBJECT - A method of additive manufacturing of a three-dimensional object is disclosed. The method comprises sequentially forming a plurality of layers in a configured pattern corresponding to the shape of the object. Each layer is formed by dispensing at least one modeling material to form an uncured layer, and curing the uncured layer by radiation. In various exemplary embodiments of the invention the method comprises, for at least one layer, forming a stack of sacrificial radiation-protective layers to cover an exposed portion of the layer, such that an upper layer of the stack remains exposed during formation of any subsequent layer of the plurality of layers. | 09-19-2013 |