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STEREOLITHOGRAPHIC SHAPING FROM LIQUID PRECURSOR

Subclass of:

264 - Plastic and nonmetallic article shaping or treating: processes

Patent class list (only not empty are listed)

Deeper subclasses:

Class / Patent application numberDescriptionNumber of patent applications / Date published
264401000STEREOLITHOGRAPHIC SHAPING FROM LIQUID PRECURSOR88
20130037993COMPUTER NUMERICAL CONTROL (CNC) ADDITIVE MANUFACTURING - An additive manufacturing system and process are described. In one example of the invention, a fiber optic cable connected with an ultraviolet (UV) LED and related lens forms an accumulation tool. The cable is then merged inside a tank filled with liquid resin that is UV-curable. By controlling the on/off state of the UV-LED and the multi-axis motion of the cable, a physical model, having a desired shape, can be built by selectively curing liquid resin into solid.02-14-2013
20130026680METHOD AND DEVICE FOR PRODUCING THREE-DIMENSIONAL MODELS - The present invention relates to a method for producing three-dimensional objects based on computer-provided data, whereby a material is deposited in layers in a process chamber and the material is selectively solidified and/or bonded using a bonding apparatus and/or a solidifying apparatus in the process chamber, these steps being repeated. A conveyance of the material proceeds during the build process and proceeds continuously, sequentially and evenly up to an unpacking position.01-31-2013
20130075954Solid Imaging Systems, Components Thereof, and Methods of Solid Imaging - There is provided solid imaging methods and apparatus for making three-dimensional objects from solid imaging material. A tray with a film bottom is provided to hold solid imaging material that is selectively cured into cross-sections of the three-dimensional object being built. A coater bar is moved back and forth over the film to remove any uncured solid imaging material from a previous layer and to apply a new layer of solid imaging material. A sensor is provided to measure the amount of resin in the tray to determine the appropriate amount of solid imaging material to be added, from a cartridge, for the next layer. A shuttle, which covers the tray when the exterior door to the solid imaging apparatus is opened for setting up a build or removing a three-dimensional object, can also be used to move the coater bar and to selectively open one or more valves on the cartridge to dispense the desired amount of solid imaging material.03-28-2013
20090179355METHODS FOR MULTI-MATERIAL STEREOLITHOGRAPHY - Methods and systems of stereolithography for building cost-efficient and time-saving multi-material, multi-functional and multi-colored prototypes, models and devices configured for intermediate washing and curing/drying is disclosed including: laser(s), liquid and/or platform level sensing system(s), controllable optical system(s), moveable platform(s), elevator platform(s), recoating system(s) and at least one polymer retaining receptacle. Multiple polymer retaining receptacles may be arranged in a moveable apparatus, wherein each receptacle is adapted to actively/passively maintain a uniform, desired level of polymer by including a recoating device and a material fill/remove system. The platform is movably accessible to the polymer retaining receptacle(s), elevator mechanism(s) and washing and curing/drying area(s) which may be housed in a shielded enclosure(s). The elevator mechanism is configured to vertically traverse and rotate the platform, thus providing angled building, washing and curing/drying capabilities. A horizontal traversing mechanism may be included to facilitate manufacturing between components of SL cabinet(s) and/or alternative manufacturing technologies.07-16-2009
20130056910DEVICE AND METHOD FOR PRODUCING THREE-DIMENSIONAL STRUCTURES - The present invention relates to a device as well as a method for creating three-dimensional structures consisting of a material to be consolidated, in particular a material containing organopolysiloxane, by way of locally selective consolidation of the latter as a result of light-induced organic cross-linking. The device is characterized by a movable focusing optical system for the formation of one or a plurality of laser foci, wherein either the laser beam of a laser source can be introduced into the material to be consolidated through the material container and a movable carrier unit is arranged in said container or the focusing optical system is immersed into the material bath and the laser beams can be introduced into the material to be consolidated via a beam exit area of the focusing optical system. In the method, a focusing optical system that is movable in at least one plane is used for the formation of at least one laser focus, and a movable carrier unit is positioned in the material to be consolidated in one embodiment.03-07-2013
20100127432METHOD FOR PRODUCTION OF CANDLES - Method for production of candles wherein at least two fuel components are mixed together which before mixing each have a different temperature and which are the same or different in chemical composition. The first fuel component has a high temperature, wherein this is too plastic or fluid to be able to be processed or packed as a candle. The second fuel component has a lower temperature and is preferably granular whereby this functions as a cooling means to bring the first fuel component to hardening or setting.05-27-2010
20100308507METHOD OF PRODUCING RESIN MOLDED ARTICLE - Provided is a method of producing a resin molded article which hardly involves the occurrence of optical distortion and of sink marks. The method of producing a resin molded article includes: a first step including pouring a polyfunctional (meth)acrylic monomer into a molding die and irradiating the polyfunctional (meth)acrylic monomer with radiant energy rays until a polymerization conversion degree reaches 1 to 10% to polymerize a part of the polyfunctional (meth)acrylic monomer; and a second step including heating the polymerized polyfunctional (meth)acrylic monomer after the first step in a state where the polymerized polyfunctional (meth)acrylic monomer is held in the molding die to further polymerize a remaining part of the polyfunctional (meth)acrylic monomer until the polymerization conversion degree reaches 60% or more.12-09-2010
20100201039METHOD OF PREPARING A FLEXOGRAPHIC PRINTING FORME - A method of making a flexographic printing forme includes the steps of: (1) providing a flexographic support; (2) applying a powder layer on said the support; (3) imagewise jetting a curable composition on the powder layer; (4) at least partially curing the jetted curable composition; (5) repeating steps (2) to (4) until the total thickness of the powder layers is greater than 100 μm; (6) removal of the powder not embedded in the imagewise jetted and at least partially cured composition; and (7) optionally overall post curing.08-12-2010
20110285061Apparatus and Method for Cooling Part Cake in Laser Sintering - A part cake defining a build produced by laser sintering and the surrounding unfused powder is contained in an enclosure, and the enclosure includes displaceable wall portions for compressing the part cake to support the build against distortion during rapid cooling from a cooling fluid. The enclosure enables the part cake to be quickly and reliably cooled either within the laser sintering system or outside the laser sintering system. A source of cooling fluid connects to the enclosure and a lid holds the part cake in place as cooling fluid is forced through the pore volume of the cake. An inert gas blanket apparatus is also provided to reduce or prevent oxidation of the part cake and/or to cool the part cake. Once the part cake is cooled, the build produced by laser sintering may be removed from the part cake.11-24-2011
20110285060LAYERED MANUFACTURING METHOD AND LAYERED MANUFACTURING DEVICE - A layered manufacturing method for forming a desired three-dimensional object by using a powder as a raw material. The method forms a desired solid body, which is employed in a layered manufacturing device, including a stage member having stage surface; a transparent member having an optical window to cover the stage surface to form an enclosed region together with the stage surface; and an exhaust system for exhausting gasses in the enclosed region. The optical window is positioned at a vertical upper direction when the enclosed region is formed.11-24-2011
20100270709LITHOGRAPHIC APPARATUS AND DEVICE MANUFACTURING METHOD - In an immersion lithography apparatus, the immersion liquid is supplied from a tank via a flow restrictor. The liquid held in the tank is maintained at a substantially constant height above the flow restrictor to ensure a constant flow of liquid.10-28-2010
20080315461Rapid Prototyping Apparatus and Method of Rapid Prototyping - The invention relates to a method of illuminating at least one rapid prototyping medium (RPM) wherein said illuminating is performed by at least two simultaneous individually modulated light beams (IMLB) projected onto said rapid prototyping medium (RPM) and wherein said rapid prototyping medium is illuminated with light beams (IMLB) having at least two different wavelength contents (WLC12-25-2008
20090184444OPTICAL MOLDING APPARATUS AND OPTCIAL MOLDING METHOD - An optical molding apparatus molds a three-dimensional model by stacking cured layers. Each cured layer is formed by emitting light according to cross-sectional-shape data of the three-dimensional model onto a surface of photo-curable resin. The optical molding apparatus includes a container that contains the photo-curable resin, a movable stage that is movable in a direction orthogonal to the surface of the photo-curable resin, an optical system that emits the light onto the surface of the photo-curable resin contained in the container so as to form each cured layer on the movable stage, and a discharging mechanism that performs a discharging operation for discharging new photo-curable resin onto a surface of each cured layer formed on the movable stage before stacking a subsequent cured layer.07-23-2009
20110001272OPTICAL MOLDING APPARATUS AND OPTICAL MOLDING METHOD - An optical molding apparatus molds a three-dimensional model by stacking cured layers. Each cured layer is formed by emitting light according to cross-sectional-shape data of the three-dimensional model onto a surface of photo-curable resin. The optical molding apparatus includes a container that contains the photo-curable resin, a movable stage that is movable in a direction orthogonal to the surface of the photo-curable resin, an optical system that emits the light onto the surface of the photo-curable resin contained in the container so as to form each cured layer on the movable stage, and a discharging mechanism that performs a discharging operation for discharging new photo-curable resin onto a surface of each cured layer formed on the movable stage before stacking a subsequent cured layer.01-06-2011
20090146344Process and freeform fabrication system for producing a three-dimensional object - The present invention provides a process for producing at least one three-dimensional object, comprising: providing a material to be solidified; delivering electromagnetic radiation and/or synergistic stimulation in a pattern or an image to a building region for solidifying said material; wherein said delivering of electromagnetic radiation and/or synergistic stimulation is performed selectively to a defined area or volume of said material to be solidified; and wherein an energy density of electromagnetic radiation and/or synergistic stimulation is controlled and/or adjusted in a border region of said pattern or image and/or is varied in border regions of patterns or images of different building regions of said material, to have an energy density different from the building region other than said border region(s), wherein the controlling and/or adjustment is dependent on, alone or in combination: (a) intensity of electromagnetic radiation and/or synergistic stimulation delivered to said defined area or volume of said material to be solidified; (b) total shape or contour shape of said defined area or volume of said material to be solidified; (c) size of said defined area or volume of said material to be solidified; and (d) material to be solidified. A device is provided likewise.06-11-2009
20110062633PROCESS FOR THE PRODUCTION OF A THREE-DIMENSIONAL OBJECT WITH AN IMPROVED SEPARATION OF HARDENED MATERIAL LAYERS FROM A CONSTRUCTION PLANE - The invention relates to a process or a device for the production of a three-dimensional object by layer-wise solidification of a photo-polymerizable resin by means of a planar or essentially planar construction/reference plane, at which the photo-polymerizable resin contained in the liquid material is to be hardened by electromagnetic irradiation, and wherein the material application for the subsequent layer automatically results from the separation of the last hardened layer from the construction/-reference plane, whereby the construction/reference plane is formed by an elastic film. The film is fixed in a frame, and the height position of the frame with the film is adjusted in a basin containing the liquid material such that the pressure of the liquid material compensates the sagging of the film (formation of a negative meniscus), and that the lower side of the film is permanently in contact with the material during the whole construction process.03-17-2011
20090206520Photosensitive composition, microfabrication method using the same, and microfabricated structure thereof - Disclosed herein may be a photosensitive composition, a microfabricated structure including the same, a device including the microfabricated structure, and methods of fabricating the microfabricated structure and the device. The photosensitive composition, including a multifunctional photosensitive resin, a two-photon photosensitizer, an organic solvent, and a silver compound, may be subjected to two- or three-dimensional microfabrication, thus realizing the microfabricated structure containing silver nanoparticles.08-20-2009
20090273122Liquefier assembly for use in extrusion-based digital manufacturing systems - A liquefier assembly comprising a liquefier tube, where the liquefier tube comprises a sidewall having an inlet opening configured to receive a filament strand, an outlet opening, and a port disposed through the sidewall at a location between the inlet opening and the outlet opening, the port being configured to provide access for a filament drive mechanism to engage with the received filament strand. The liquefier assembly further comprises a heat transfer component configured to generate a thermal gradient along a longitudinal length of the sidewall between the port and the outlet opening.11-05-2009
20110169196FORMING METHOD AND THREE DIMENSIONAL OBJECT - A forming method includes: drawing, using a liquid which has a light curable property and a non-water-soluble property in a cured state, a sectional pattern of a three dimensional object which is a forming target on a water-soluble recording medium which has acceptability for the liquid; sequentially irradiating, after a different recording medium on which the sectional pattern is drawn is overlapped with the recording medium on which the sectional pattern is drawn, at least the sectional pattern on the different recording medium over the plurality of recording mediums, with light; and dissolving areas outside the sectional patterns in the stacked plurality of recording mediums using a liquid which includes water, after the irradiating.07-14-2011
20090295039Device for layerwise manufacturing of a three-dimensional object - An apparatus for layerwise manufacturing of a three-dimensional object (12-03-2009
20090267269Selective Deposition Modeling Using CW UV LED Curing - A continuous-wave (CW) ultraviolet (UV) curing system for solid freeform fabrication (SFF) is provided, wherein the curing system is configured to provide an exposure of UV radiation for one or more layers of UV-curable material. One or more UV exposures may initiate curing of a curable material in the layer dispensed by a solid freeform fabrication apparatus. One approach to provide the single or multiple UV exposures is the use of one or more UV LEDs, which generate UV radiation without generating any substantial amounts of infrared (IR) radiation at the same time. This allows for the curing process to be energy efficient and also allows for the SFF system to be far less complex.10-29-2009
20090261512STEREOLITHOGRAPHY APPARATUS AND STEREOLITHOGRAPHY METHOD - A stereolithography apparatus that forms a three-dimensional model by sequentially laminating cured resin layers through repetition of a cycle of selectively applying light to liquid photocurable resin to form a cured resin layer, further applying liquid photocurable resin on the cured resin layer, and applying light to form a cured resin layer. The apparatus includes a table, a dispenser to supply the liquid photocurable resin onto the table, a recoater to apply the photocurable resin, and a controller to slow down a moving speed of the recoater based on a moving distance of the recoater during application operation of the recoater.10-22-2009
20100127433Methods and Systems for Integrating Fluid Dispensing Technology With Stereolithography - An integrated system and method of integrating fluid dispensing technologies (e.g., direct-write (DW)) with rapid prototyping (RP) technologies (e.g., stereolithography (SL)) without part registration comprising: an SL apparatus and a fluid dispensing apparatus further comprising a translation mechanism adapted to translate the fluid dispensing apparatus along the Z-, Y- and Z-axes. The fluid dispensing apparatus comprises: a pressurized fluid container; a valve mechanism adapted to control the flow of fluid from the pressurized fluid container; and a dispensing nozzle adapted to deposit the fluid in a desired location. To aid in calibration, the integrated system includes a laser sensor and a mechanical switch. The method further comprises building a second part layer on top of the fluid deposits and optionally accommodating multi-layered circuitry by incorporating a connector trace. Thus, the present invention is capable of efficiently building single and multi-material SL fabricated parts embedded with complex three-dimensional circuitry using DW.05-27-2010
20100140849EXTRUSION-BASED LAYERED DEPOSITION SYSTEMS USING SELECTIVE RADIATION EXPOSURE - A system for building a three-dimensional object based on build data representing the three-dimensional object, the system comprising an extrusion head configured to deposit a radiation-curable material in consecutive layers, where the radiation-curable material of each of the consecutive layers is in a self-supporting state, and a radiation source configured to selectively expose a portion of at least one of the consecutive layers to radiation in accordance with the build data.06-10-2010
20110006459POLYMER OBJECT OPTICAL FABRICATION PROCESS - High-volume mass-production and customization of complex three-dimensional polymer and polymer-derived-ceramic microstructures are manufactured in a single step directly from three dimensional computer models. A projection based non-degenerate two-photon induced photopolymerization method overcomes the drawbacks of conventional one and two-photon fabrication methods. The structure includes dual, synchronized, high-peak power, pulsed femtosecond and picosecond lasers combined with spatial light modulation. Applications include high-resolution rapid prototyping and rapid manufacturing with an emphasis on fabrication of various Micro-Electro-Mechanical Systems (MEMS) devices, especially in the area of MEMS packaging.01-13-2011
20080258345Liquid Radiation-Curing Compositions - The present invention relates to liquid radiation-curing compositions having flexible and elastic material properties in the cured state, consisting of the following components: a) from 5.0 to 99.0% by weight of a di- or polyfunctional polyether (meth)-acrylate compound having a molecular weight of more than 1000 g/mol; b) from 1.00 to 90.0% by weight of a mono-, di- or polyfunctional radiation-curing (meth)acrylate compound having a molecular weight of less than 1000 g/mol as a reactive component or reactive thinner or cross-linking agent for the formation of polymer networks; c) from 0.05 to 10.0% by weight of a free-radical forming photoinitiator; d) from 0.001 to 5.0% by weight of further components; with the proviso that the sum of components a) to d) amounts to 100% by weight. Further, the present invention relates to products obtainable from the compositions according to the invention, and processes for the preparation, treatment and use of three-dimensional shaped objects made from the compositions according to the invention.10-23-2008
20090085257Method for Producing Three-Dimensional Objects Using Segmental Prototyping - The method for manufacturing large three-dimensional objects of the present invention comprises the following steps: obtaining a three-dimensional shape data for a three-dimensional target object; converting the three-dimensional shape data into a size needed for manufacturing; transforming the size-converted data into a “shell” data (i.e., data of a hallow target object having a cavity therein); dividing the “shell” data into shell segments of such a size that can be manufactured by a rapid prototyping apparatus; prototyping each of the “shell” segments by a rapid prototyping apparatus to manufacture each of prototyped parts; assembling the prototyped parts to produce a prototype of the target three-dimensional shape object.04-02-2009
20090200709Full-Wafer or Large Area Imprinting with Multiple Separated Sub-Fields for High Throughput Lithography - A layer on a substrate is formed using an imprint lithography system. The layer is formed by providing a plurality of flowable regions on the substrate, spreading material in the flowable regions, and contacting the regions with a plurality of imprint lithography molds that are disposed on a template.08-13-2009
20090102098GAS SHIELDING STRUCTURE FOR USE IN SOLID FREE FORM FABRICATION SYSTEMS - A solid free form fabrication (SFF) system and method is used to fabricate a three-dimensional structure in a continuous manner from successive layers of feedstock material. The system includes a gas shielding structure that is configured to protect a targeted region from oxidation. The system further includes a positioning arm coupled to the deposition head and moveable to align the deposition head with a targeted region of the three-dimensional structure and a plurality of control components coupled to the positioning arm for controlling a position of the positioning arm and operation of the deposition head. The gas shielding structure is formed as either a parallelepiped structure or a half disc structure and may be conformable to at least one surface of the three-dimensional structure.04-23-2009
20110221100PRODUCTION METHOD FOR A PAINT PLANT COMPONENT AND CORRESPONDING PAINT PLANT COMPONENT - Exemplary production methods for producing a paint plant component, e.g., for producing a component of a colour changer, a colour valve, or a spray device, are disclosed. According to the exemplary illustrations, the paint plant component may be produced in a rapid prototyping method. The exemplary illustrations also include a paint plant component that is produced accordingly.09-15-2011
20100264566RAPID FABRICATION OF A MICROELECTRONIC TEMPORARY SUPPORT FOR INORGANIC SUBSTRATES - A method for fabricating a rigid temporary support used for supporting inorganic substrates during processing includes providing an inorganic substrate comprising a first surface to be processed and a second surface opposite to the first surface. Next, applying a liquid layer to the second surface of the inorganic substrate and then curing the applied liquid layer and thereby forming a rigid temporary support attached to the second surface of the inorganic substrate. Next, processing the first surface of the inorganic substrate while supporting the inorganic substrate upon the rigid temporary support. The curing includes first exposing the applied liquid layer to ultraviolet (UV) radiation and then performing a post exposure bake (PEB) at a temperature sufficient to complete the curing of the applied liquid layer and to promote outgassing of substances.10-21-2010
20090256284Method for producing ceramic stereolithography parts - In addition to working curves, other equally important, but previously not understood, relationships exist for both the green strength and the cured line width of ceramic-loaded resins. These characteristics of cured parts are strongly affected by the dose rate, a parameter usually controlled with laser power. Multiple smaller doses are used to produce a total integrated dose. Multiple exposures benefit from using high power to produce a fast process. However, since the dose for a given layer is broken into several smaller doses, the negative effect of high power on strength and cured linewidth is reduced.10-15-2009
20100156003 Rapid Prototyping and Manufacturing System and Method - A stereolithography apparatus having a resin vat with resupply containers in one-way flow communication and a leveling container in two-way how communication, an automatic offload cart to remove and replace build support platforms, an elevator assembly for supporting and releasably retaining a build platform removably attached to the stereolithography apparatus frame such that elevator forks supporting the build platform can be released into the vat and removed from the stereolithography apparatus with the vat, and a recoater assembly and recoater blade for mapping the resin surface in the vat and applying a fresh coating of resin to a cross-section being built in the vat.06-24-2010
20090085256IMAGE FORMING METHOD AND APPARATUS - The image forming method forms a three-dimensional shape on a medium by stacking up a plurality of droplets of liquid on a same droplet deposition point on the medium. The method includes the steps of: depositing a first droplet of the liquid onto the medium; then solidifying the first droplet while carrying out a process whereby an upper surface of the first droplet assumes a depressed shape; and then depositing a second droplet of the liquid onto the first droplet.04-02-2009
20100001437METHOD AND COMPOSITION FOR REDUCING WASTE IN PHOTO-IMAGING APPLICATIONS - Waste reduction, including hazardous waste reduction in photoimaging processes can be accomplished by improving diffusional resolution of cationic curable compositions. In preferred embodiments stereolithographic articles are formed with a reduced production of waste by forming an article from a cationic composition; removing excess composition from the formed article using an air knife or liquid C001-07-2010
20100230862MEDICAL DEVICES - Medical devices and related methods are disclosed.09-16-2010
20100052222METHOD AND DEVICE FOR CREATING THREE-DIMENSIONAL HOLLOW OBJECTS FROM RADIATION CURABLE RESIN - A device for forming hollow three-dimensional objects from radiation curable resin includes a light container having an interlocking base and a pivotal lid with cooperating interior surfaces forming a light chamber. An interior surface of the pivotal lid has a light source attached thereto directing light toward an interior surface of the interlocking base. A multi-axis rotating mechanism, such as a gyroscope, is positioned within the light container, the gyroscope having moving rings. A translucent three-dimensional mold capsule is removably secured to the multi-axis rotating mechanism, wherein a radiation curable resin is inserted in to the mold capsule. The associated method includes providing a translucent mold capsule with a hollow interior chamber; filling the translucent mold capsule with an amount of radiation curable resin sufficient to coat an interior surface of the hollow interior chamber of the translucent mold capsule; sealing the translucent mold capsule to contain the radiation curable resin within the hollow interior chamber; inserting and attaching the translucent mold capsule into a multi-axis rotating mechanism; positioning the multi-axis rotating mechanism within a light container having an interlocking base and lid and light source; activating the light source; setting the multi-axis rotating mechanism in motion for a period of time; removing the translucent mold capsule from the multi-axis rotating mechanism; and removing the hollow three-dimensional object so formed from the translucent mold capsule.03-04-2010
20090115110Drop Pattern Generation for Imprint Lithography - Generating a fluid drop pattern for an imprint lithography process includes selecting an imprinting surface with features and generating a fluid drop pattern including drop locations for placement of a multiplicity of drops of substantially equal volume on an imprint lithography substrate such that some of the drops are substantially aligned with at least some of the features. The fluid drop pattern is generated through an optimization process. The fluid drop pattern allows substantially complete filling of imprinting surface features and formation of a substantially uniform residual layer during the imprint lithography process.05-07-2009
20090072447Region-Based Supports for Parts Produced by Solid Freeform Fabrication - Methods for generating supports (03-19-2009
20100320648LAYERWISE PRODUCTION METHOD AND ILLUMINATION SYSTEM FOR USE THEREIN - An illumination system for use in a system (12-23-2010
20110042859THREE-DIMENSIONAL PRINTING - A process for forming a three-dimensional article in sequential layers in accordance with a digital model of the article. The process comprises the steps of defining a layer of a first liquid, applying a second liquid to the first liquid layer in a pattern corresponding to the digital model, and repeating these steps to form successive layers. The first liquid comprises a first active component and the second liquid includes a second active component capable of reacting with the first reactive component so that the article is built up in layers.02-24-2011
20110042858METHOD OF MAKING MOLDS WITH PRODUCTION READY SURFACES - Disclosed herein are methods of making a mold having a production-ready surface as defined herein. One disclosed method comprises creating an expanded geometric computer model of a mold. A physical model of the mold is produced based on the expanded geometric computer model using a material that disintegrates at sufficient temperature. A ceramic cast from the physical model is created, and then a molten metal is poured into the ceramic cast, thereby disintegrating the physical model. The molten metal is cooled and the ceramic cast is removed from the cooled metal to reveal the mold having the production-ready surface.02-24-2011
20110241259LITHOGRAPHIC APPARATUS AND DEVICE MANUFACTURING METHOD - A lithographic apparatus may include an optical element, such as an immersion fluid reservoir, which supported at least in part by a bearing, such as a gas bearing. To enable illumination by the lithographic apparatus of an edge of the substrate, a surrounding structure is provided that surrounds the substrate. A level parameter of the substrate, such as a thickness of the substrate, is measured by a sensor, such as a thickness sensor. By means of an actuator, the substrate table on which the substrate is or will be held is positioned with respect to the surrounding structure, such that a surface of the substrate would be on a substantially same level as a surface of the surrounding structure, thus enabling the optical element to transition from the surface of the substrate to the surface of the surrounding structure and vice versa.10-06-2011
20090243156METHOD OF PHOTOFABRICATION - An object of the present invention is to provide an optical molding method that is capable of taking out the model shape of an optically-molded object with high accuracy, and capable of performing molding with high accuracy even when a shape having a fine structure or a microstructure is molded. An optical molding method to form a three-dimension shape object in which cured resin layers are laminated and integrated includes forming a cured resin layer of a photo-curable composition by irradiating a photo-curable composition layer with light, forming the photo-curable composition layer again above the cured resin layer, forming further a cured resin layer of the photo-curable composition by radiating a light, and repeating these steps, wherein the photo-curable composition layer is formed by applying a photo-curable resin composition containing resin, an ethylenic unsaturated compound, and an organic solvent above a base material or above the cured resin layer formed above the base material, and removing the organic solvent contained in the photo-curable resin composition, and wherein the three-dimension shape object is formed by removing the photo-curable composition that is not cured in the cured resin layers after the formation of all the cured resin layers is completed.10-01-2009
20090014916METHOD AND APPARATUS FOR PRODUCING THREE-DIMENSIONAL STRUCTURE - The present invention aims to produce a three-dimensional structure having a high aspect ratio by using inkjet printing techniques or the like. Specifically, a three-dimensional structure is produced by ejecting a liquid drop of a solution, which contains a solvent and polymer particles dispersed in the solvent while having a viscosity of not more than 100 cps, from a nozzle onto a substrate; then evaporating the solvent and melting the polymer particles by irradiating the liquid drop with light; and then depositing the molten polymer particles on the substrate. The present invention can be applied to production of biochips and the like.01-15-2009
20090014917Drop Pattern Generation for Imprint Lithography - Generating a fluid drop pattern for an imprint lithography process includes selecting an imprinting surface and generating a fluid drop pattern including drop locations for placement of a multiplicity of drops of substantially equal volume on an imprint lithography substrate. The fluid drop pattern is generated through one or more modified Lloyd's method iterations. The fluid drop pattern allows substantially complete filling of imprinting surface features and formation of a substantially uniform residual layer during the imprint lithography process.01-15-2009
20080230957Device for Transforming Materials Using Induction Heating - A device for transforming thermoplastic matrix composite materials or thermosetting materials, includes two mold casings that are mobile relative to each other, electrically conductive, and include a molding zone designed to be in contact with the material to be transformed. The faces of one of the two mold casings are situated so as to be facing magnetic field generator, except for the molding zones, and are coated with a shielding layer made of a non-magnetic material preventing the magnetic field from penetrating into the mold casings. The mold casings are electrically insulated from each other during the molding phase so that the faces of the two mold casings demarcate an air gap wherein flows the magnetic field that induces currents at the surface of the molding zones thus localizing the heating at the interface between the molding zone and the material to be transformed.09-25-2008
20120313294System and Method For Layerwise Production of A Tangible Object - A system and method for layer-by-layer production of an object is provided. The system includes a construction shape having a carrying surface adapted for carrying a layer of build material, a plate having a holding surface adapted for holding an object in an object build area, a moveable reservoir having a plurality of containment surfaces defining a containment area adapted for containing a volume of build material within the moveable reservoir, and an exposure unit adapted for exposing at least a portion of the layer of build material in the object build area so that the portion of the layer of build material solidifies to form a solidified layer of the object.12-13-2012
20110260365PROCESS AND FREEFORM FABRICATION SYSTEM FOR PRODUCING A THREE-DIMENSIONAL OBJECT - The present invention provides a process for producing at least one three-dimensional object, comprising: providing a material to be solidified; delivering electromagnetic radiation and/or synergistic stimulation in a pattern or an image to a building region for solidifying said material; wherein said delivering of electromagnetic radiation and/or synergistic stimulation is performed selectively to a defined area or volume of said material to be solidified; and wherein an energy density of electromagnetic radiation and/or synergistic stimulation is controlled and/or adjusted in a border region of said pattern or image and/or is varied in border regions of patterns or images of different building regions of said material, to have an energy density different from the building region other than said border region(s), wherein the controlling and/or adjustment is dependent on, alone or in combination: (a) intensity of electromagnetic radiation and/or synergistic stimulation delivered to said defined area or volume of said material to be solidified; (b) total shape or contour shape of said defined area or volume of said material to be solidified; (c) size of said defined area or volume of said material to be solidified; and (d) material to be solidified. A device is provided likewise.10-27-2011
20110215506MOLDING METHOD AND MOLDING APPARATUS - A molding method includes: drawing cross-section elements of a three-dimensional object as a molding target on a drawing surface of a drawing stand with a liquid whose curing is precipitated by receiving activation energy as cross-section patterns; applying the activation energy to the liquid configuring the cross-section patterns in a state in which the cross-section patterns is pinched between the drawing stand and a molding stand; and detaching the cross-section patterns after being applied with the activation energy from the drawing stand and transferring the cross-section patterns to the molding stand side, wherein the drawing surface has a liquid repellent area that is an area representing liquid repellency for the liquid and a lyophilic area that is independently formed in an island shape within the liquid repellent area and is an area representing lyophillicity stronger than that of the liquid repellent area for the liquid.09-08-2011
20100327493DUAL PHOTOINITIATOR, PHOTOCURABLE COMPOSITION, USE THEREOF AND PROCESS FOR PRODUCING A THREE DIMENSIONAL ARTICLE - The present invention is directed to a photoinitiator composition comprising two different cationic photoinitiators and a photocurable composition comprising said photoinitiator composition. Moreover, the present invention relates to the use of the photoinitiator composition and the photocurable composition. Furthermore, the present invention relates to a process for producing a three dimensional article.12-30-2010
20090085255PHOTO NANOIMPRINT LITHOGRAPHY - The present invention is directed to providing a photo nanoimprint lithography which can form a more uniform base layer. A photo nanoimprint lithography according to the present invention includes the steps of discretely applying a photo-curable resist drop-wise onto a substrate, filling an asperity pattern of a mold with the photo-curable resist by bringing the mold having the asperity pattern formed therein into contact with the photo-curable resist, curing the photo-curable resist by irradiating the resist with a light and releasing from the mold the photo-curable resist which has been photo-cured, wherein an intermediary layer is formed on a surface of the substrate for maintaining a discrete placement of the photo-curable resist that has been instilled drop-wise on the substrate until the mold is brought into contact with the photo-curable resist that has been instilled drop-wise on the substrate.04-02-2009
20100140850Compositions for 3D printing - Described is a composition for solid freeform fabrication (SFF) at a given dispensing temperature. The composition comprises: a curable component having a monofunctional (meth)acrylic functional group; a photo-initiator, and a sulfur-containing additive. The viscosity of the composition, as measured at the given dispensing temperature, changes by no more than 3 cps during 30 days of aging at 40° C.06-10-2010
20110101570Device and Method for Producing a Three-Dimensional Object by Means of Mask Exposure - The invention describes device and method for producing a three-dimensional object by solidifying a solidifiable material under an action of electromagnetic radiation by means of energy input via an imaging unit comprising a predetermined number of discrete imaging elements (pixels). The energy input related to a specific cross-sectional area of the three-dimensional object is controlled by exposure by means of multiple successive raster masks (bitmaps; e.g. bitmap 05-05-2011
20110101569THREE-DIMENSIONAL STEREOLITHOGRAPHY APPARATUS, THREE-DIMENSIONAL STEREOLITHOGRAPHY METHOD, AND THREE-DIMENSIONAL OBJECT - A three-dimensional stereolithography apparatus includes a stage, a support mechanism to support a film so that the film is opposed to the stage, a pressing mechanism, a supply mechanism, an irradiation unit, a movement mechanism, and a control mechanism. The pressing mechanism presses at least a linear area of the film so that the linear area closest to the stage is formed in the film. The supply mechanism supplies a light-curing material into a slit area formed between the stage and the linear area. The irradiation unit irradiates the light-curing material supplied into the slit area with laser light through the pressing mechanism and the film. The movement mechanism moves the stage and the pressing mechanism relatively to the film, to form one cured layer of the light-curing material. The control mechanism controls a distance between the stage and the linear area of the film, to stack the cured layer.05-05-2011
20120007287METHOD AND APPARATUS FOR LAYERWISE PRODUCTION OF A 3D OBJECT - A system and method for layer-by-layer production of an object is provided. The system includes a construction shape having a carrying surface adapted for carrying a layer of build material, a plate having a holding surface adapted for holding an object in an object build area, a moveable reservoir having a plurality of containment surfaces defining a containment area adapted for containing a volume of build material within the moveable reservoir, and an exposure unit adapted for exposing at least a portion of the layer of build material in the object build area so that the portion of the layer of build material solidifies to form a solidified layer of the object. In one embodiment, the moveable reservoir is moveable between a first position and a second position and at least one of the plurality of containment surfaces of the moveable reservoir includes a portion of the carrying surface when the moveable reservoir is in the first position, and the portion of the carrying surface is positioned in the object build area when the moveable reservoir is in the second position.01-12-2012
20120007288Compensation of Actinic Radiation Intensity Profiles for Three-Dimensional Modelers - There is provided methods and apparatus for compensation of intensity profiles of imagers used in three-dimensional modelers. The intensity profile of the actinic radiation projected from the imager is determined by a variety of techniques, including but not limited to manually operated sensors, exposed and scanned actinic radiation-sensitive paper, and intensity profilers. Once the intensity profile of the imager is determined, each layer of the solidifiable liquid material is cured by projecting a plurality of patterns (as opposed to a single pattern) defining the two-dimensional cross-section of the part being cured. The patterns vary in duration, number, and/or shape to correlate to the intensity profile so that a single layer of selectively cured solidifiable liquid material is cured with a substantially equivalent (or otherwise controlled) amount of actinic radiation per unit of surface area to provide generally controlled and consistent part quality.01-12-2012
20110049767SYSTEM, APPARATUS, AND METHOD FOR RESIN LEVEL MAINTENANCE IN A STEREO-LITHOGRAPHY DEVICE - A system includes a stereo-lithography device having a primary fluid vessel having an amount of a photo-curable fluid therein. The system includes a leveling reservoir fluidly coupled to the primary fluid vessel, where a fluid level in the leveling reservoir is vertically positionable. The system further includes a controller that maintains a pre-determined level of the photo-curable fluid in the primary fluid vessel by vertically positioning the fluid level in the leveling reservoir.03-03-2011
20110089610Resin Solidification Substrate and Assembly - A solidification substrate assembly for making a three-dimensional object from a solidifiable material includes a solidification substrate assembly. In certain examples, the solidifiable material solidifies in contact with the solidification substrate, and the tilting of the substrate and/or or the use of a peeling member facilitates separation of the substrate from the solidified material. In other examples, the solidification substrate assembly includes a film that is adjacent to a rigid or semi-rigid layer. The solidifiable material solidifies in contact with the film, and a peeling member peels the film away from the solidified material. Intelligent solidification substrate assemblies are also described in which a force sensor determines when to expose the solidifiable material to solidification energy and/or whether to use a peeling member to separate the solidification substrate from a solidified objection section.04-21-2011
20110180971Method for the Production of Heavily Inclined Surfaces in Layers - The invention relates to a method for manufacturing a product in layers, said method comprising the following steps: (a) applying a layer of a curable material, (b) selectively curing predetermined zones of the applied layer on the basis of geometrical data of the product, (c) repeating steps (a) and (b) until the geometry of the product has been created in the form of cured material and (d) removing the uncured material. According to the invention, a finish allowance, for example one with a wedge-shaped cross-section, is applied in steps (a) and (b), in one, two or more product sections in which an angle (α) between an axis perpendicular to the layers and at least one surface section of a contour of the product exceeds a predetermined value, to said surface section in such a way that the angle (β) between the axis perpendicular to the layers and the external surface in said product section does not exceed said predetermined value.07-28-2011
20120133083Stereolithography Machine - The invention is a stereolithography machine (05-31-2012
20120248657METHOD FOR THE LAYERED CONSTRUCTION OF A SHAPED BODY MADE OF HIGHLY VISCOUS PHOTOPOLYMERIZABLE MATERIAL - The invention relates to a method for the layered construction of a shaped body made of highly viscous photopolymerizable material.10-04-2012
20120168989METHOD AND APPARATUS FOR LAYERWISE PRODUCTION OF A 3D OBJECT - A system and method of layerwise production of a tangible object (07-05-2012
20100270708METHOD AND APPARATUS FOR PRODUCING THREE-DIMENSIONAL OBJECTS - The invention concerns a method for producing three-dimensional objects (10-28-2010
20100193998INORGANIC IONIC SUPPORT MATERIALS FOR DIGITAL MANUFACTURING SYSTEMS - A support material for use with a digital manufacturing system, the support material comprising at least one inorganic ionic compound and is configured to be deposited with the digital manufacturing system using a layer-based additive technique to form a support structure for supporting at least one overhanging region of a three-dimensional model built with the digital manufacturing system.08-05-2010
20090020920THREE-DIMENSIONAL OBJECT FORMING APPARATUS AND METHOD FOR FORMING THREE DIMENSIONAL OBJECT - A three-dimensional object forming apparatus forms a three-dimensional object by binding powder particles with a curable liquid. The apparatus includes a powder layer forming unit that spreads a powder to a uniform thickness to form a powder layer. A curable liquid ejection head ejects the curable liquid to the powder layer through an ejection nozzle. A sectional data producing device produces sectional data at each of a plurality of cross sections of a desired three-dimensional object according to shape data of the desired three-dimensional object. A cross-sectional member forming section is also included by which cross-sectional members are formed by ejecting the curable liquid to the powder layer from the curable liquid ejection head according to the sectional data and thus binding the powder layer. The cross-sectional member forming section includes a permeation rate controller controlling the permeation rate of the curable liquid to the powder layer.01-22-2009
20090020919METHOD AND MACHINE FOR PRODUCING THREE-DIMENSIONAL OBJECTS BY MEANS OF SUCCESSIVE LAYER DEPOSITION - Inventive machine allowing the simultaneous fabrication of several objects by a method of “rapid prototyping” type, by depositing a succession of layers of heat-fusible fluid.01-22-2009
20130228953Three-Dimensional Shaping Device And Three-Dimensional Shaping Method09-05-2013
20120228802DEVICE AND METHOD FOR FOCUSING A BEAM OF LIGHT WITH REDUCED FOCAL PLANE DISTORTION - A system for focusing a light beam may be used for multi-photon stereolithography. It comprises a collimator or expander for adjusting the beam divergence and a scanner for directing the beam onto a focusing device to focus the beam to a focal point or beam waist and to scan the focused beam. A controller controls adjustment of the beam divergence so that the focal point or beam waist is scanned substantially in a plane. A light source may be provided to generate the light beam. The expander may comprise a diverging lens and a converging lens for expanding the beam to produce a collimated beam. The divergence of the collimated beam is dependent on the distance between the diverging lens and the converging lens, which may be adjusted to adjust the beam divergence. The focusing device may comprise a dry objective lens to focus the collimated beam onto the target material to induce multi-photon absorption in the target material at the beam waist of the focused beam.09-13-2012
20120228803METHODS FOR FABRICATING HIGH TEMPERATURE CASTABLE ARTICLES AND GAS TURBINE ENGINE COMPONENTS - Embodiments of a method are provided for fabricating a high temperature castable article, such as a casting mold or a core. In one embodiment, the method includes the steps of providing a suspension containing a plurality of ceramic particles and a photo-curable monomer; photo-curing selected portions of the suspension to produce a green body coated, at least partially, with uncured suspension; and removing the uncured suspension from the green body under process conditions at which the viscosity of the uncured suspension is reduced. The process conditions include exposing the green body to one of the group consisting of: (i) microwave energy sufficient to excite a dipole moment of the uncured suspension and (ii) sonic energy sufficient to induce shear-thinning of the uncured suspension. The green body is then heat treated to produce the high temperature castable article.09-13-2012
20110121491Method For Manufacturing Three-Dimensional Objects and Machine Employing Said Method - Method for manufacturing three-dimensional objects (W) consisting of superimposed layers (L) of a base material (M), liquid at ambient temperature and capable of solidifying permanently following a stimulating action, comprising the following operations: spreading a layer (L05-26-2011
20110121492METHOD FOR MANUFACTURING A THREE-DIMENSIONAL OBJECT - Method of manufacturing a three-dimensional object according to which the object is built layer-wise by solidification of a building material, wherein a test specimen is built which is excited to oscillate after being built and wherein natural frequencies of the oscillations are determined.05-26-2011
20120326356FABRICATING OBJECTS WITH INTEGRAL AND CONTOURED REAR PROJECTION - A method for manufacturing a three dimensional (3D) object with a rear projection (RP) surface. The method includes providing a rapid prototyping machine, such as a stereolithography machine, with input material, such as a white photopolymer resin. The method includes providing a digital prototyping file, which defines thin, separately grown layers of a digital representation of the 3D object, to a computer control system. With the computer control system, the rapid prototyping machine is operated to form a 3D object using the input material and the digital prototyping file. As a result, the 3D object includes an RP element, which behaves as an RP substrate or surface. A structural portion of the 3D model has a first thickness and an RP portion has a second thickness that is less than the first thickness such that it is translucent to provide an RP element integrally formed with an adjacent structural element.12-27-2012
20120286453NETWORKED THREE-DIMENSIONAL PRINTER WITH THREE-DIMENSIONAL SCANNER - Three-dimensional fabrication resources are improved by adding networking capabilities to three-dimensional printers and providing a variety of tools for networked use of three-dimensional printers. Web-based servers or the like can provide a single point of access for remote users to manage access to distributed content on one hand, and to manage use of distributed fabrication resources on the other.11-15-2012
20120242008PATTERN FORMING METHOD AND PATTERN FORMING APPARATUS - A nozzle N which moves in a scan direction Ds along a surface Wf of a substrate W discharges an application liquid which contains a photo-curing material, and a light emitter E moving as if to follow the nozzle N irradiates light (UV light for instance) upon the application liquid. Arriving at an application end position, the nozzle N stops discharging the application liquid and retracts in a direction away from the substrate surface Wf. Meanwhile, the light emitter E keeps moving in the scan direction Ds, thereby irradiating even the terminating end of the application liquid with the light without fail.09-27-2012
20120242007METHOD FOR REDUCING DIFFERENTIAL SHRINKAGE IN STEROLITHOGRAPHY - The present invention relates to a new and improved stereolithography method and system for generating a three-dimensional object by forming successive, adjacent, cross-sectional laminae of that object, thereby providing an object being specially processed to reduce differential shrinkage.09-27-2012
20130168902METHOD FOR PRODUCING A THREE-DIMENSIONAL COMPONENT - A method for producing a three-dimensional component by means of a laser melting process, in which the component is produced by consecutively solidifying individual layers made of building material by melting the building material, wherein said building material can be solidified by the action of radiation, wherein the melting area produced by a punctiform and/or linear energy input is detected by a sensor device and sensor values are derived therefrom in order to evaluate the component quality. The sensor values detected in order to evaluate the component quality are stored together with the coordinate values that locate the sensor values in the component and are displayed by means of a visualization unit in two- and/or multi-dimensional representation with respect to the detection location of the sensor values in the component.07-04-2013
20130140741RESIN SOLIDIFICATION SUBSTRATE AND ASSEMBLY - A solidification substrate assembly for making a three-dimensional object from a solidifiable material includes a solidification substrate assembly. In certain examples, the solidifiable material solidifies in contact with the solidification substrate, and the tilting of the substrate and/or or the use of a peeling member facilitates separation of the substrate from the solidified material. In other examples, the solidification substrate assembly includes a film that is adjacent to a rigid or semi-rigid layer. The solidifiable material solidifies in contact with the film, and a peeling member peels the film away from the solidified material. Intelligent solidification substrate assemblies are also described in which a force sensor determines when to expose the solidifiable material to solidification energy and/or whether to use a peeling member to separate the solidification substrate from a solidified objection section.06-06-2013
20080217818Stereolithographic Apparatus - An improved stereolithography apparatus for forming three-dimensional objects using multiple chambered resin vats and a quick disconnect mounting system to permit concurrent use of multiple photopolymer build materials and easy change over of resin vats is disclosed. The apparatus permits easy change over from multiple chambered vat use to single chamber vat use and vice versa or change over between multiple chambered vats.09-11-2008
20090321995Method for making, positioning and securing dummy elements in models tested in wind tunnels - The dummy elements (12-31-2009
20110221099METHOD AND DEVICE FOR MANUFACTURING A THREE-DIMENSIONAL OBJECT THAT IS SUITABLE FOR APPLICATION TO MICROTECHNOLOGY - The present invention relates to a method and a device for manufacturing a three-dimensional object, wherein the object is generated by successively solidifying single layers of fluid or powdery solidifiable building material by the action of electromagnetic radiation. The method comprises steps for emitting a first pulsed electromagnetic radiation onto a first area of a layer of the building material, and for emitting a second continuous electromagnetic radiation onto a second area of the layer of the building material.09-15-2011
20100283188METHOD AND DEVICE FOR THE GENERATIVE PRODUCTION OF A SHAPED BODY HAVING NON-PLANAR LAYERS - The present invention relates to a method for the generative production of a shaped body (11-11-2010
20130154160Stereolithography Systems and Methods Using Internal Laser Modulation - Stereolithography systems (06-20-2013
20130154161METHOD AND APPARATUS ASSOCIATED WITH ANISOTROPIC SHRINK IN SINTERED CERAMIC ITEMS - A manufacturing method for producing ceramic item from a photocurable ceramic filled material by stereolithography. The method compensates for the anisotropic shrinkage of the item during firing to produce a dimensionally accurate item.06-20-2013
20110309554Device And Method For Processing Light-Polymerizable Material For Building Up An Object In Layers - A method and a device for processing a light-polymerizable material (12-22-2011
20120018924MULTIPLE-ZONE LIQUEFIER ASSEMBLY FOR EXTRUSION-BASED ADDITIVE MANUFACTURING SYSTEMS - A liquefier assembly for use in an extrusion-based additive manufacturing system, and a method for building a three-dimensional model with the extrusion-based additive manufacturing system, where the liquefier assembly includes a liquefier tube having multiple, independently heatable zones along a longitudinal length of the liquefier tube.01-26-2012
20130193620MULTI-DIMENSIONAL COMPONENT BUILD SYSTEM AND PROCESS - An example multi-dimensional component building system includes a first chamber having at least one base, a second chamber adjacent to and in fluid communication with the first chamber through a first door, and a third chamber adjacent to and in fluid communication with the second chamber through a second door. The second chamber is fluidly sealed from the first chamber if the first door is in a closed position. The second chamber includes a directed heat source, a build-up material and is configured to receive the at least one base if the fluid parameters of the first chamber and second chamber are approximately equal. The third chamber is fluidly sealed from the second chamber if the first door is in a closed position. The third chamber is configured to receive the at least one base, having a formed component disposed thereon, if the second door is in an open position.08-01-2013
20130193621SYSTEMS AND METHODS OF ON-DEMAND CUSTOMIZED MEDICAMENT DOSES BY 3D PRINTING - Systems and methods of fabricating a customized dose using a medication 3D printer are provided. According to one embodiment, a system is provided that includes a 3D printer that receives prescription dose instructions from a computer or mobile communication device via a network and assembles a customized medication dose according to the prescription dose instructions by selective application of materials stored in a medicament compound container having at least one reservoir containing the materials for assembly. The materials for assembly can be provided to the 3D printer by a master conduit connecting reservoirs in the medicament compound container to the 3D printer. The 3D printer accesses specified amounts of the materials, which include medicament compounds, via the master conduit, and assembles the customized medication dose according to the prescription dose instructions.08-01-2013

Patent applications in class STEREOLITHOGRAPHIC SHAPING FROM LIQUID PRECURSOR