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Stratasys Inc patents


Recent patent applications related to Stratasys Inc. Stratasys Inc is listed as an Agent/Assignee. Note: Stratasys Inc may have other listings under different names/spellings. We're not affiliated with Stratasys Inc, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "S" | Stratasys Inc-related inventors


Polymer based molds and methods of manufacturing there of

Polymer-based molds are described. The polymer-based mold includes a first portion comprising a first material having a glass transition temperature (tg) lower than about 80° c.; and a second portion comprising a second material having a tg higher than about 80° c., wherein the second portion at least partially covers the first portion, the second portion is thinner than the first portion and faces a cavity in the polymeric mold.. ... Stratasys Inc

Additive manufacturing system with extended printing volume, and methods of use thereof

An additive manufacturing system for printing three-dimensional (3d) parts includes a print foundation, a print head, a drive mechanism, and a supporting surface that creates an air bearing for parts under construction as they move through the system. The print head is configured to print a 3d part onto the print foundation in a layer-by-layer manner in a vertical print plane. ... Stratasys Inc

3d printer with coupling for attaching print head and additional equipment to head carriage

A 3d printer includes a gantry configured to move in a plane substantially parallel to a build plane. The system includes a platen configured to support a part being built in a layer by layer process, wherein the platen is configured to move in a direction substantially normal to the build plane. ... Stratasys Inc

High-performance consumable materials for electrophotography-based additive manufacturing system

A part material for printing three-dimensional parts with an electrophotography-based additive manufacturing system, the part material including a composition having a high-performance thermoplastic material and a charge control agent. The part material is provided in a powder form having a controlled particle size, and is configured for use in the electrophotography-based additive manufacturing system having a layer transfusion assembly for printing the three-dimensional parts in a layer-by-layer manner.. ... Stratasys Inc

Semi-crystalline build materials

A polymeric material includes a semi-crystalline polymer and a secondary material wherein when the secondary material is combined with the semi-crystalline polymer to form a blend having an enthalpy that is between about 2 j/g heat of fusion and about 80% of the heat of fusion of the neat semi-crystalline material, as measured by differential scanning calorimetry (dsc) when cooling from a melting temperature to a hot crystalline temperature at a rate of 10° c./min.. . ... Stratasys Inc

Lever tray release

A platen assembly for use in a 3d printer includes a frame and a platen supported by the frame. The platen is configured to receive a removable build tray. ... Stratasys Inc

Heated air system for 3d printer

An apparatus and a method using the apparatus provides heated air in an additive manufacturing process for building a three-dimensional part. The method comprises providing a stream of flowable part material at an initial build level, the initial build level being positioned in and defining a horizontal plane wherein the stream of flowable material is being initially disposed on previously deposited part material. ... Stratasys Inc

Adaptive layer height

A method of additive manufacturing prints a part by adding layers to the part. The heights of the layers are determined by determining an orientation of at least one surface of a model of the part and setting a layer height for a layer to be added to the part based on the determined orientation of the at least one surface of the model of the part.. ... Stratasys Inc

3d printer with spool and material container

A 3d printer has a gantry configured to move in a plane substantially parallel to a build plane, and a platen configured to support a part being built. The platen is configured to move in a direction substantially normal to the build plane. ... Stratasys Inc

Filament loading drive in a 3d printer

A 3d printer includes at least one consumable loading bay configured to supply filament from a consumable supply assembly to a print head and at least one drive assembly that is configured to advance filament to the print head from the consumable supply. Each drive assembly includes a follower wheel rotatable about a follower axis and a drive wheel spaced apart from the follower wheel. ... Stratasys Inc

3d printer with coupling for attaching print head to head carriage

An 3d printer has a gantry configured to move in a plane substantially parallel to a build plane. The system includes a platen configured to support a part being built in a layer by layer process, wherein the platen is configured to move in a direction substantially normal to the build plane. ... Stratasys Inc

Platen planarizing process for additive manufacturing system

A method for printing a three-dimensional part with an additive manufacturing system, the method comprising generating and printing a planarizing part having a substantially-planar top surface relative to a build plane, and a bottom surface that substantially mirrors a topography of a platen surface, and printing the three-dimensional part over the substantially-planar top surface of the printed planarizing part.. . ... Stratasys Inc

Recycling and reuse of sulfonated polymer material in additive manufacturing

A method of recycling and reusing a tap water-soluble sulfonated polymer material from a structural component made using an additive manufacturing process comprises dissolving the structural component in water to disperse the sulfonated polymer material into the water. The sulfonated polymer material is precipitated from the water and recovered; then dried and reformed into a form suitable for subsequent use as a consumable feedstock in a subsequent additive manufacturing process.. ... Stratasys Inc

Additive manufacturing using density feedback control

A method for printing a three-dimensional part with an additive manufacturing system includes providing a bitslice stack having a plurality of bitslices and printing a plurality of successive layers of the three-dimensional part with the additive manufacturing system based on the bitslices in the bitslice stack. The method includes measuring density of the three-dimensional part under construction near an intermediate build surface after one or more of the successive layers are printed. ... Stratasys Inc

02/01/18 / #20180029299

Additive manufacturing with offset stitching

A method of printing a three-dimensional part includes dividing each of a plurality of layers of a model of the three-dimensional part into a plurality of passes, where each of the plurality of passes is separated from one or more adjacent passes by a gap. The gap between passes in a first layer is offset from the gap between passes in an adjacent layer, such that the gap between passes in the first layer does not align with or stack with the gap between passes in the adjacent layer.. ... Stratasys Inc

02/01/18 / #20180029291

Digitally-controlled three-dimensional printing of polymerizable materials

Provided are methods of fabricating an object, effected by jetting two or more different compositions, each containing a different material or mixture of materials, which, when contacted on a receiving medium, undergo a chemical reaction therebetween to form the building material. The chemical composition of the formed building material is dictated by a ratio of the number of voxels of each composition in a voxel block. ... Stratasys Inc

12/28/17 / #20170368816

Resin slot extruder for additive manufacturing system

A slot extruder for use with an additive manufacturing system, which includes a plenum configured to receive a photocurable resin, an elongated slot positioned at a bottom end of the plenum and configured to receive the photocurable resin from the plenum, one or more resin inlet ports extending into the plenum, and one or more mechanisms configured to controllably pressurize and depressurize the photocurable resin in the plenum.. . ... Stratasys Inc

12/28/17 / #20170368738

Compositions and methods for use in three dimensional model printing

A method of printing a three-dimensional object is provided. The method includes selectively dispensing, layer by layer, one or more materials to form the three-dimensional object; selectively dispensing, layer by layer, one or more materials to form a support construction for the three-dimensional object; selectively dispensing, layer by layer, one or more materials to form a rigid exterior construction around at least part of the support construction, the rigid exterior having substantially similar strength and elasticity to the three-dimensional object; and forming a release construction around the rigid exterior construction, the release construction being between the rigid exterior construction and the three-dimensional object.. ... Stratasys Inc

12/14/17 / #20170355144

System and method for printing a three-dimensional object

A three-dimensional printing system to print three-dimensional objects and a method of printed are disclosed. The system includes a printing apparatus to print three-dimensional objects and a controller to receive data from a material supply source and to control said printing apparatus.. ... Stratasys Inc

12/07/17 / #20170348914

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. ... Stratasys Inc

11/23/17 / #20170334131

Rapid prototyping apparatus

Apparatus for producing an object by sequentially forming thin layers of a construction material one on top of the other responsive to data defining the object, the apparatus comprising: a plurality of printing heads each having a surface formed with a plurality of output orifices and controllable to dispense the construction material through each orifice independently of the other orifices; a shuttle to which the printing heads are mounted; a support surface; and a controller adapted to control the shuttle to move back and forth over the support surface and as the shuttle moves to control the printing heads to dispense the construction material through each of their respective orifices responsive to the data to form a first layer on the support surface and thereafter, sequentially the other layers; wherein each printing head is dismountable from the shuttle and replaceable independently of the other printing heads.. . ... Stratasys Inc

11/23/17 / #20170334130

Method and system for building painted three-dimensional objects

Methods of printing a three-dimensional object, layer by layer are provided. Layers are formed by printing a bulk region with a white building material; inkjet printing a circumferential region surrounding the bulk region that is part of an apparent colored surface of the three-dimensional object, the circumferential region includes colored voxels formed by depositing a transparent building material and one or more color additive materials and inkjet printing a transparent layer around the circumferential region.. ... Stratasys Inc

11/09/17 / #20170320268

Method and system for reuse of materials in additive manufacturing systems

A printing system for forming three-dimensional objects, layer by layer is provided. The system includes inkjet printing heads, each printing head adapted to dispense one of a modeling material, a support material or a reusable waste material that comprises one or more materials that were previously discharged from at least one of the inkjet printing heads; a modeling material container; a support material container; a reusable waste material container and a leveling unit that removes surplus material from previously deposited layers, the surplus material being provided to the reusable waste container via a tube.. ... Stratasys Inc

11/09/17 / #20170320266

Additive manufacturing method for building three-dimensional objects with core-shell arrangements, and three-dimensional objects thereof

A consumable filament for use in an extrusion-based additive manufacturing system, where the consumable filament comprises a core portion of a first thermoplastic material, and a shell portion of a second thermoplastic material that is compositionally different from the first thermoplastic material, where the consumable filament is configured to be melted and extruded to form roads of a plurality of solidified layers of a three-dimensional object, and where the roads at least partially retain cross-sectional profiles corresponding to the core portion and the shell portion of the consumable filament.. . ... Stratasys Inc

11/09/17 / #20170320254

Seam concealment for three-dimensional models

A three-dimensional model built with an extrusion-based digital manufacturing system, and having a perimeter based on a contour tool path that defines an interior region of a layer of the three-dimensional model, where at least one of a start point and a stop point of the contour tool path is located within the interior region of the layer.. . ... Stratasys Inc

10/26/17 / #20170306171

Three-dimensional inkjet printing using ring-opening metathesis polymerization

Methods for fabricating three-dimensional objects by 3d-inkjet printing technology are provided. The methods utilize curable materials that polymerize via ring-opening metathesis polymerization (romp) for fabricating the object. ... Stratasys Inc

10/05/17 / #20170282452

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. ... Stratasys Inc

09/21/17 / #20170271843

Additive manufacturing system with laser assembly

A laser assembly for use with an additive manufacturing system, which includes a base block configured to be moved along a scan direction axis in the additive manufacturing system, a plurality of laser emitters preferably arranged in an array of at least two rows of two or more laser emitters. At least a portion of a heat sink assembly is configured to draw heat away from the base block and/or the laser emitters. ... Stratasys Inc

09/21/17 / #20170268133

Core-shell morphology of composite filaments for use in extrusion-based additive manufacturing systems

A consumable filament for use in an extrusion-based additive manufacturing system, where the consumable filament comprises a core portion of a matrix of a first base polymer and particles dispersed within the matrix, and a shell portion comprising a same or a different base polymer. The consumable filament is configured to be melted and extruded to form roads of a plurality of solidified layers of a three-dimensional part, and where the roads at least partially retain cross-sectional profiles corresponding to the core portion and the shell portion of the consumable filament and retain the particles within the roads of the printed part and do not penetrate the outer surface of the shell portion.. ... Stratasys Inc

09/21/17 / #20170266980

Apparatus and method for pressure regulation

A system for maintaining a desired pressure difference between a first pressure within a chamber and a reference pressure at a reference space. The system may include a peristaltic pump located along a duct that connects the chamber with the reference space. ... Stratasys Inc

09/21/17 / #20170266891

Remotely-adjustable purge station for use in additive manufacturing systems

A purge station assembly for use in an additive manufacturing system, which includes a purge station having a base bracket, a slide mount slidably engaged with the base bracket, and a contact head configured to clean a nozzle tip of a print head. The purge station assembly also includes a mechanism, such as a cable line, operably attached to the slide mount that allows an operator to mechanically move the slide mount relative to the base bracket from a location that is remote from the purge station.. ... Stratasys Inc

09/14/17 / #20170259488

Preparation of building material for solid freeform fabrication

A method suitable for solid freeform fabrication is disclosed. The method comprises mixing respective amounts of a plurality of materials such as to provide a building material characterized by at least one attribute, and using the building material for fabricating a three-dimensional object.. ... Stratasys Inc

09/14/17 / #20170259469

Method for printing of three-dimensional objects

A method for preventing detachment of a three-dimensional object from a printing tray of a printing apparatus is disclosed. The method includes printing a carpet of building material below and around the base of a three-dimensional object to be printed; and printing said three-dimensional object. ... Stratasys Inc

08/31/17 / #20170246851

Rapid production apparatus with production orientation determination

A method of producing an object by sequentially printing layers of construction material one on top of the other, the method comprising: providing the construction material at a first lower temperature; flowing the construction material through a heated flow path in a flow structure to heat the construction material and delivering the heated construction material to a heated reservoir in a printing head; and dispensing the heated construction material from the reservoir to build the object layer by layer.. . ... Stratasys Inc

08/24/17 / #20170239884

Print assembly for additive manufacturing system, and methods of use thereof

A print assembly for use in an additive manufacturing system to print three-dimensional parts, which includes a coarse positioner, a fine positioner, and a liquefier assembly, where a portion of the liquefier assembly is operably mounted to the fine positioner such that the fine positioner is configured to move the portion of the liquefier assembly relative to the coarse positioner.. . ... Stratasys Inc

08/17/17 / #20170232685

Additive manufacturing system with extended printing volume, and methods of use thereof

An additive manufacturing system for printing three-dimensional parts, the system comprising a heatable region, a receiving surface, a print head configured to print a three-dimensional part onto the receiving surface in a layer-by-layer manner along a printing axis, and a drive mechanism configured to index the receiving surface along the printing axis such that the receiving surface and at least a portion of the three-dimensional part out of the heated region.. . ... Stratasys Inc

08/17/17 / #20170232665

Ribbon liquefier and method of use in extrusion-based digital manufacturing systems

A ribbon liquefier comprising an outer liquefier portion configured to receive thermal energy from a heat transfer component, and a channel at least partially defined by the outer liquefier portion, where the channel has dimensions that are configured to receive the ribbon filament, and where the ribbon liquefier is configured to melt the ribbon filament received in the channel to at least an extrudable state with the received thermal energy to provide a melt flow. The dimensions of the channel are further configured to conform the melt flow from an axially-asymmetric flow to a substantially axially-symmetric flow in an extrusion tip connected to the ribbon liquefier.. ... Stratasys Inc

08/10/17 / #20170225402

Method for printing three-dimensional parts with part strain orientation

A method and program for printing a three-dimensional part with an additive manufacturing system, the method including generating or otherwise providing strain data from a digital model of the three-dimensional part, orienting the digital model to align the directions of high tensile strain in a build plane, and printing the three-dimensional part in a layer-by-layer manner based on the oriented digital model with the additive manufacturing system.. . ... Stratasys Inc

08/10/17 / #20170225391

System and method for three dimensional model printing

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.. . ... Stratasys Inc

08/10/17 / #20170225390

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. ... Stratasys Inc

08/03/17 / #20170217089

Liquefier assemblies for additive manufacturing systems, and methods of use thereof

A liquefier assembly for use in an additive manufacturing system to print three-dimensional parts. In one aspect, the liquefier assembly includes a liquefier that is transversely compressible, and having an inlet end configured to receive a consumable material in a solid or molten state and an outlet end, a nozzle at the outlet end, and an actuator mechanism configured to transversely compress and expand the liquefier in a controlled manner in another aspect, the liquefier assembly is self heating.. ... Stratasys Inc

07/20/17 / #20170203508

Method and system for fabricating cross-layer pattern

A method of fabricating a cross-layer pattern in a layered object is disclosed. The method is executed by an additive manufacturing system and comprises: dispensing a patterning material onto a receiving medium to form a first pattern element; dispensing a first layer of modeling material onto the first pattern element while forming a first open cavity exposing at least a portion of the first pattern element beneath the first layer; and dispensing patterning material onto the exposed portion of the first pattern element and the first layer to form a second pattern element contacting the first pattern element.. ... Stratasys Inc

07/20/17 / #20170203507

Ripple reduction in an additive manufacturing system

An assembly for use in an additive manufacturing system to print a three-dimensional part that includes an extruder comprising a gear and a motor that turns the gear, wherein rotation of the gear regulates a flow of material out of the extruder. A controller, provides a control signal to the motor to control the rate at which the motor turns the at least one gear and incorporates a time-varying signal into the control signal to reduce ripples in the material output by the extruder.. ... Stratasys Inc

07/20/17 / #20170203506

Gear-based liquefier assembly for additive manufacturing system, and methods of use thereof

A liquefier assembly for use in an additive manufacturing system to print three-dimensional parts, which includes an upstream pressure-generating stage and downstream flow-regulating stage. The upstream pressure-generating stage includes a drive mechanism, a liquefier configured to melt a consumable material receive from the drive mechanism to produce a molten material in a pressurized state. ... Stratasys Inc

07/13/17 / #20170197360

Electrohydrodynamic additive manufacturing systems and methods for high temperature modeling

A method to form a part in an additive manufacturing system includes providing a melt pool configured to retain and dispense an electrically resistive consumable material and an array of channels in fluid communication with the melt pool. The method includes providing an array of channels in fluid communication with the melt pool, where each of the array of channels have a hollow electrically conductive nozzles wherein each of the array of nozzles is coupled to a distal end of one of the array of channels such that the consumable material can flow from the melt pool to each of the nozzles. ... Stratasys Inc

07/06/17 / #20170192382

Electrophotographic additive manufacturing with moving platen and environmental chamber

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. ... Stratasys Inc

07/06/17 / #20170192377

Systems and methods for electrophotography-based additive manufacturing of parts

In a method of producing a 3d part using an electrophotography-based additive manufacturing system, a plurality of layers of a powder-based material are developed using at least one electrophotography (ep) engine. The developed layers are transferred to a transfer medium. ... Stratasys Inc

07/06/17 / #20170190114

Abs/polycarobonate/poly(styrene-co-maleimide) part material for electrophotography-based additive manufacturing

A part material for printing three-dimensional parts with an electrophotography-based additive manufacturing system, the part material including a composition having a grafted copolymer (including acrylonitrile units, butadiene units, aromatic units modified withpolycarbonate and poly(styrene-co-maleimide)), a charge control agent, and a heat absorber. The part material is provided in a powder form having a controlled particle size, and is configured for use in the electrophotography-based additive manufacturing system having a layer transfusion assembly for printing the three-dimensional parts in a layer-by-layer manner.. ... Stratasys Inc

06/22/17 / #20170174932

Materials containing fluoropolymers for additive manufacturing applications

Part materials for additive manufacturing applications include materials with a fluoropolymer processing aid (material-fp). These materials include one or more thermoplastic polymers and one or more fluoropolymers as a processing aid. ... Stratasys Inc

06/22/17 / #20170173891

Gravitational supports in additive manufacturing system

An additive manufacturing system for printing three-dimensional parts, the system including a print head configured to print a part material along a non-vertical printing axis, a non-horizontal print foundation configured to receive the printed part material from the print head to produce the three-dimensional part in a layer-by-layer manner, a drive mechanism configured to index the print foundation along the non-vertical printing axis, and a controller operably coupled to control the print head and the drive mechanism. The controller is configured to cause the print head to print the part according to a method of printing including printing a support structure below the part on the non-horizontal print foundation, wherein the part and the support structure are physically separated, and wherein the support structure is configured to support the part during printing as the part is elongated.. ... Stratasys Inc

06/22/17 / #20170173889

User-dependent views of a shared print tray

An interactive platform supports multi-user participation in a shared virtual workspace to prepare and schedule virtual print trays for printing on a three-dimensional (3d) printer or other fabrication resource. Computerized models may be automatically positioned within the print tray, manually positioned within the print tray, or some combination of these. ... Stratasys Inc

06/22/17 / #20170173888

Multi-user access to fabrication resources

An interactive platform supports multi-user participation in a shared virtual workspace to prepare and schedule virtual print trays for printing on a three-dimensional (3d) printer or other fabrication resource. Computerized models may be automatically positioned within the print tray, manually positioned within the print tray, or some combination of these. ... Stratasys Inc

06/22/17 / #20170173886

Method and system for rotational 3d printing

A system for three-dimensional printing is disclosed. The system comprises: a rotary tray configured to rotate about a vertical axis; a printing head, each having a plurality of separated nozzles; and a controller configured for controlling the inkjet printing head to dispense, during the rotation, droplets of building material in layers, such as to print a three-dimensional object on the tray.. ... Stratasys Inc

06/22/17 / #20170173883

Additive manufacturing method using tilted scanners

Additive manufacturing method includes providing a number of scanners with at least partially overlapping fields of view. The scanners are positioned such that respective optical axes thereof are at an angle relative to a normal part bed. ... Stratasys Inc

06/22/17 / #20170173874

Electrophotography-based additive manufacturing with support structure and boundary

A method of printing a part in an additive manufacturing system includes printing a support structure for the part, printing a boundary surrounding the support structure, and printing the part on the support structure. An additive manufacturing system for printing a three-dimensional part includes a transfer medium configured to receive and transfer imaged layers of a thermoplastic-based powder for a boundary, a thermoplastic-based powder for a support, and a thermoplastic-based powder for the part from at least two imaging engines, a heater configured to heat the imaged layers on the transfer medium to at least a fusion temperature of the thermoplastic-based powder, and a layer transfusion assembly including a build platform, the layer transfusion assembly being configured to transfuse the heated layers in a layer-by-layer manner onto the build platform to print the three-dimensional part.. ... Stratasys Inc

06/22/17 / #20170173865

Composition and method for additive manufacturing of an object

Formulations and methods employing these formulation for fabricating an object by additive manufacturing, such as three-dimensional inkjet printing are provided. The formulations comprise at least 50 weight percents of hydrophilic curable materials, and upon curing, provide a material that is characterized by water absorbance of at least 5%, and by high hdt and impact resistance values. ... Stratasys Inc

06/22/17 / #20170173737

Additive manufacturing method using a plurality of synchronized laser beams

An additive manufacturing method includes providing a first and second scanners with fields of view that at least partially overlap. The method includes applying a layer of powder-based materials to the part bed and providing a number of laser sources that direct a number of laser beams to the first and second scanners. ... Stratasys Inc

06/22/17 / #20170173736

Additive manufacturing method using large and small beam sizes

Additive manufacturing method includes providing first and second scanners having first and second overlapping fields of view, applying a layer of powder-based materials to a part bed, providing a laser source for each scanner, each laser source producing a laser beam, and directing its laser beam to its scanner. A first laser beam from the first scanner pre-heats the powder-based material along a tool path in a selected pattern, and a second laser beam from the second scanner melts the pre-heated powder-based material along a second tool path. ... Stratasys Inc

06/22/17 / #20170173696

Method and apparatus for 3d printing by selective sintering

A system (100) for building a three dimensional object includes a powder delivery station (10) for applying a layer of powder material on a building tray (200), a digital printing station (30) for printing a mask pattern on the layer, a sintering station (50) for selectively sintering the portion of the layer that is defined by the mask to be sintered and a stage (250) for repeatedly advancing the building tray (200) to each of the powder delivery station, digital printing station and sintering station to build a plurality of layers that together form the three dimensional object. The mask pattern defines a negative portion of the layer to be sintered. ... Stratasys Inc

06/15/17 / #20170165920

Additive manufacturing systems and method of filling voids in 3d parts

A method of additive three-dimensional object production includes depositing liquefied material to produce two roads and placing an extruder tip having a bottom surface that surrounds an orifice such that one portion of the bottom surface is sealed against one of the two roads and another part of the bottom surface is sealed against the other of the two roads and the orifice is positioned over a space between the two roads. Liquefied material is then extruded through the orifice to fill the space between the two roads.. ... Stratasys Inc

06/08/17 / #20170157855

Thermal drying system for additive manufacturing device

An additive manufacturing device includes at least one liquefier assembly that receives filament material from at least one feedstock and extrudes the material in a flowable form. A thermal drying system removes water vapor and heats compressed air to a preselected temperature set point to form conditioned air. ... Stratasys Inc

06/08/17 / #20170157848

System and method for three-dimensional printing

A method for preparing a three-dimensional object, in layers is described. The method may include forming a layer on a transparent substrate by selectively depositing liquid material on a transparent substrate based on image data of a cross section of the layer, the image data including at least a body region, wherein the material extends on the transparent tray outside a contour defining the body region; contacting the layer to a previously solidified layer attached to an elevated fabrication platform; and selectively curing the liquid material by irradiating the layer with curing radiation through the transparent substrate according to high-resolution image data of the cross section such that the material that extends outside the contour remains uncured.. ... Stratasys Inc

06/01/17 / #20170155304

Lubricant flow control in a linear motor

A linear motor includes a rotor rotatable relative to a surrounding rotor sleeve and about a central axis. At least one opening extends between an inner surface and an outer surface of the rotor. ... Stratasys Inc

05/18/17 / #20170136707

Filament feeding device having a capacitive filament displacement sensor for use in additive manufacturing system

A filament feeding device includes a drive mechanism and a displacement sensor. The drive mechanism is configured to feed a filament along a feed path. ... Stratasys Inc

05/18/17 / #20170136691

Ribbon filament and assembly for use in extrusion-based digital manufacturing systems

A consumable material for use in an extrusion-based digital manufacturing system, the consumable material comprising a length and a cross-sectional profile of at least a portion of the length that is axially asymmetric. The cross-sectional profile is configured to provide a response time with a non-cylindrical liquefier of the extrusion-based digital manufacturing system that is faster than a response time achievable with a cylindrical filament in a cylindrical liquefier for a same thermally limited, maximum volumetric flow rate.. ... Stratasys Inc

05/11/17 / #20170130048

Water soluble ink-jet composition for 3d printing

A material composition, which may be a support material, for three-dimensional (3d) inkjet printing is disclosed. The material composition may comprise a glycol polymer, a low molecular weight polar substance and a surface-active agent. ... Stratasys Inc

05/11/17 / #20170129169

Continuous liquid interface production system with viscosity pump

A continuous liquid interface production system includes a source of optical stimulation. The system includes a vessel configured to retain a pool or film of optically sensitive monomer and a substantially optically transparent plate retained by the vessel. ... Stratasys Inc

05/04/17 / #20170122322

Conical viscosity pump with axially positionable impeller and method of printing a 3d part

A pump assembly for use in an additive manufacturing system includes a viscosity pump having a first end and a second end wherein the first end has a cross sectional area greater than a cross sectional area of the second end. The viscosity pump has a conical shaped inner surface defining a pump chamber, an inlet proximate the first end and an outlet proximate the second end. ... Stratasys Inc

05/04/17 / #20170120534

Starter piece and printing methods for additive manufacturing system

A starter piece for printing a three-dimensional item includes a main body having a face surface, a keel coupled to the main body, a guide tab extending from the keel, and at least one retaining mechanism coupled to the main body. Printing a three-dimensional item with an additive manufacturing system having a print foundation, a print head configured to print the three-dimensional item, and a plurality of support rails includes printing a support structure for the three-dimensional item in a layer by layer manner along the printing axis along with the printing of the three-dimensional item. ... Stratasys Inc

05/04/17 / #20170120532

Method for building and using three-dimensional objects containing embedded identification-tag inserts

A method for building a three-dimensional object containing an identification-tag insert, the method comprising performing a build operation to form layers of the three-dimensional object using a layer-based additive technique, placing the identification-tag insert on at least a portion of the layers during the build operation, and reading information from the identification-tag insert.. . ... Stratasys Inc

05/04/17 / #20170120531

In-situ part position measurement

A probe for an additive manufacturing system includes a probe body having a first air port therethrough between an inlet and an outlet, and a location sensing probe extending from the probe body. The location sensing probe includes a probe end and a probe bar, the probe bar coupled between the probe body and the probe end, and a channel surrounding the probe bar, the channel having an inner tube having an inlet proximate the probe body and an outlet proximate the probe end. ... Stratasys Inc

05/04/17 / #20170120522

Print foundation positioning and printing methods for additive manufacturing system

Method for printing a three-dimensional part layerwise with an additive manufacturing system includes printing layers by depositing material from a print head onto a print foundation, incrementing a position of the print head relative to the print foundation after each layer is printed, and indexing the print foundation carrying the printed layers away from the print head along the printing axis after a number of layers are printed. Printing is performed with driven and fixed rails clamped against movement of the print foundation. ... Stratasys Inc

04/27/17 / #20170115594

Soluble support material for electrophotography-based additive manufacturing

A support material for printing a support structure with an electrophotography-based additive manufacturing system, the support material including a composition having a charge control agent and a thermoplastic copolymer having aromatic groups, (meth)acrylate-based ester groups, carboxylic acid groups, and anhydride groups, with a high anhydride conversion. The composition is provided in a powder form having a controlled particle size, and the support material is configured for use in the electrophotography-based additive manufacturing system having a layer transfusion assembly for printing the support structure in a layer-by-layer manner, and is at least partially soluble in an aqueous solution.. ... Stratasys Inc

04/20/17 / #20170106604

Three-dimensional printing process for producing a self-destructible temporary structure

A three dimensional printing method for producing a self-destructible temporary structure, comprising: depositing, layer by layer, a degradable material solution having a biosynthetic copolymer as a degradable component and a disintegrating agent solution comprising enzyme as the disintegrating agent, wherein the disintegrating agent is capable of disintegrating the degradable component. The steps include curing deposited layers to form gel layers and activating the disintegrating agent by an external trigger during or after depositing the disintegrating agent to gradually degrade the degradable component.. ... Stratasys Inc

04/20/17 / #20170106602

Rapid prototyping apparatus

Apparatus for producing an object by sequentially forming thin layers of a construction material one on top of the other responsive to data defining the object, the apparatus comprising: a plurality of printing heads each having a surface formed with a plurality of output orifices and controllable to dispense the construction material through each orifice independently of the other orifices; a shuttle to which the printing heads are mounted; a support surface; and a controller adapted to control the shuttle to move back and forth over the support surface and as the shuttle moves to control the printing heads to dispense the construction material through each of their respective orifices responsive to the data to form a first layer on the support surface and thereafter, sequentially the other layers; wherein each printing head is dismountable from the shuttle and replaceable independently of the other printing heads.. . ... Stratasys Inc

04/13/17 / #20170100888

Additive manufacturing system and method for printing three-dimensional parts using velocimetry

An additive manufacturing system that retains a print head for printing a three-dimensional part in a layer-by-layer manner using an additive manufacturing technique, where the retained print head is configured to receive a consumable material, melt the consumable material, and extrude the molten material. The system also includes a velocimetry assembly configured to determine flow rates of the molten material, and a controller assembly configured to manage the extrusion of the molten material from the print head, and to receive signals from the velocimetry assembly relating to the determined flow rates.. ... Stratasys Inc

03/30/17 / #20170087774

High-temperature soluble support material for additive manufacturing

A support material for use in an additive manufacturing system, which includes a thermoplastic copolymer polymerized from monomers comprising acid-functional monomers having carboxylic acid groups, and one or more non-acid-functional monomers, where a portion of the carboxylic acid groups are neutralized with a base having an alkali metal cation. The thermoplastic copolymer has a high glass transition temperature and melt processing temperature, and is thermally stable at its melt processing temperature. ... Stratasys Inc

03/16/17 / #20170075245

Engineering-grade consumable materials for electrophotography-based additive manufacturing system

A part material for printing three-dimensional parts with an electrophotography-based additive manufacturing system, the part material including a composition having an engineering-grade thermoplastic material and a charge control agent. The part material is provided in a powder form having a controlled particle size, and is configured for use in the electrophotography-based additive manufacturing system having a layer transfusion assembly for printing the three-dimensional parts in a layer-by-layer manner.. ... Stratasys Inc








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