Abstract: A molding system to manufacture a three-dimensional object corresponding to a three-dimensional model. The molding apparatus includes a slice data generation unit to generate slice data from three-dimensional shape data of the three-dimensional model, and a lamination unit to laminate a layer of a molding material on the basis of the slice data. The slice data generation unit analyzes data, and, if a region in which a layer of a second molding material different from a first molding material is to be laminated on a layer of the first molding material and in which it is difficult to laminate the layers is extracted, modifies the data of a region of at least one of an ith layer and an (i+1)th layer to data in which a portion in which the first molding material is disposed and a portion in which the second molding material is disposed.

Abstract: A method is provided for treating a surface of a molded part, produced in a 3D printing method, with a surface treatment means, wherein holding means are arranged on the molded part which enable a treatment of the surface in a treatment chamber, without the surface making contact with the walls of the treatment chamber. A corresponding method for producing a molded part in a 3D printing method is also provided, as well as the corresponding dataset for controlling a 3D printer, and a computer program product which determines a number of holding means on the basis of the geometry data of the molded part.

Abstract: The present invention relates to a mold bottom extending about a central axis and comprising a molding wall made as a single piece and defining a molding surface; a cavity formed inside the molding wall, and having a central area, a peripheral area, and a middle area; a central pipe supplying the cavity with heat-transfer fluid, that opens in the central area via one or more central openings; and at least one pipe for discharging the heat-transfer fluid from the cavity, into which the peripheral area opens. According to the invention, the mold bottom comprises a bypass that brings the central pipe into direct communication with the middle area of the cavity by bypassing the central area.

Abstract: The method for fabricating pattern of a cured product includes a first step (arranging step) of arranging a layer formed of a liquid film of a curable composition (?1) containing at least a component (A1) serving as a polymerizable compound on a substrate and a second step (dispensing step) of dispensing liquid droplets of a curable composition (?2) containing at least a component (A2) serving as a polymerizable compound discretely onto a layer formed of a composition (?1?) of components of the curable composition (?1) except a component (D1) serving as a solvent, in which: the mixing of the composition (?1?) and the curable composition (?2) is exothermic.

Abstract: Systems and methods for additive fabrication include directed thermal sensors, directed heating elements, and directed cooling elements. These elements detect, control, and modulate the temperature of freshly laid and adjacent roads during the fabrication of an object by the system. Such control, detection, and modulation improves road fusion and enables the fabrication of unsupported overhangs that are otherwise unattainable.

Abstract: A photocuring-type three-dimensional printing method and device. The photocuring-type three-dimensional printing method comprises the following steps: obtaining a three-dimensional data model of a printing object; dividing the three-dimensional data model into a plurality of layers; identifying exposed areas and internal areas of various layers for at least a portion of the layers of the three-dimensional data model; performing exposure at each layer for the exposed areas of the various layers, and performing an exposure process at an interval of multiple layers for the internal areas of the various layers.

Abstract: Curable formulations which form cured materials that are breakable upon immersion in water are disclosed. The cured materials break into a plurality of particles being a few millimeters or less in size. Methods of fabricating three-dimensional objects utilizing the curable formulations are also disclosed, as well as model objects fabricated thereby. The curable formulations include at least a mono-functional curable material and a multi-functional curable material, as described in the specification.

Abstract: A system is disclosed for printing a component. The system may have a nozzle controlled for movement within a plane. The nozzle may be configured to dispense a molten metal. A substrate may be positioned within a reservoir. The substrate may receive the molten metal to form the component in a printing operation. A heated barrier material in a molten state may be contained within the reservoir for forming a liquid barrier between an atmosphere and the substrate. The nozzle has a tip which is submerged within the liquid barrier while dispensing the molten metal during the printing operation. The liquid barrier forms a barrier between an atmosphere in a vicinity of the substrate and the substrate.

Abstract: A method of additive manufacturing comprises determining a first resonant frequency of an unflawed reference workpiece at a first partial stage of completion, fabricating a production workpiece to the first partial stage of completion via additive manufacture, sensing a second resonant frequency of the production workpiece in-situ at the first partial stage of completion, during the fabrication, analyzing the workpiece for flaws based on comparison of the first and second resonant frequencies, and providing an output indicative of production workpiece condition, based on the analysis. An additive manufacturing system comprises an additive manufacturing tool, a sensor, and a controller. The additive manufacturing tool is disposed to construct a workpiece via iterative layer deposition. The sensor is disposed to determine a resonant frequency of the workpiece in-situ at the additive manufacturing tool, during fabrication.

Abstract: An additive manufacturing apparatus having a container for holding a radiation-curable liquid, and a build platform having a build surface for holding a product being manufactured during a manufacturing process. The build platform is movable relative to the container in a predetermined direction. The apparatus also includes a radiation source for providing hardening radiation to selectively solidify radiation-curable liquid in the container by exposure to form the product. The container includes an interior floor having a flexible floor part maintainable in a planar configuration in which the flexible floor part is planar. A radiation-curable liquid in contact with the interior floor is confined by a container wall having a flexible wall section arranged to move intactly with the flexible floor part.

Abstract: Disclosed is an ink composition for a 3D printing supporter and a 3D printing production method using the same, in which the ink composition is usable for an inkjet 3D printer, has excellent jetting properties and is easily dissolved in water after curing so that a supporter can be easily removed. The ink composition for a 3D printing supporter comprises: an amine-containing monomer, a curing agent, and a water-soluble polymer having an amine-containing polymer.

Abstract: A composite machining machine includes a first machining head, a second machining head, a workpiece holder, a cover, and a frame. The first machining head is movable in a first region to perform additive manufacturing on the workpiece in a second region. The second machining head is movable in the second region to perform cutting on the workpiece. The workpiece holder holds the workpiece in the second region. The cover covers the first region. The frame includes two columns and a beam member coupling the columns. The cover includes a region definition member openable at least partially. The region definition member defines the second region. The first machining head is movable in a guided manner in a range between the columns. The beam member is disposed so that the predetermined range lies inside the first region, and outside and above the second region.

Abstract: An additive manufacturing system, and associated methods, comprise an image projection system comprising a plurality of image projectors that project a composite image onto a build area within a resin pool. The composite image comprises a plurality of sub-images arranged in an array. The properties of each sub-image and the alignment of the position of each sub image within the composite image can be adjusted using a stack of filters comprising: 1) an irradiance mask that normalizes irradiance, 2) a gamma adjustment mask that adjusts sub-image energy based on a reactivity of the resin, 3) a warp correction filter that provides geometric correction, and 4) an edge blending bar at one or more sub-image edges.

Abstract: A method and an apparatus of forming a three-dimensional object, wherein the method includes providing a carrier and an optically transparent member having a build surface, said carrier and said build surface defining a build region therebetween; filling said build region with a polymerizable liquid, continuously or intermittently irradiating said build region with light through said optically transparent member to form a solid polymer from said polymerizable liquid, continuously or intermittently advancing (e.g.

Abstract: A cell printing apparatus of the present disclosure comprises a nozzle configured to discharge a heat-sensitive cell printing composition; and a heating unit for transferring heat to the upper side of the heat-sensitive cell printing composition which is discharged from the nozzle to be laminated. A predetermined space is formed between the heating unit and the nozzle so that the heating unit does not contact with the nozzle.

Abstract: An additive manufacturing apparatus in which a streak in a manufacturing direction is difficult to be made on the surface of a product manufactured object in a boundary region of projection regions of exposure images is provided. In this apparatus, a vessel holds a photosetting liquid resin material, a first projector makes a first exposure image incident from an incident surface and projects it into the resin material, a second projector makes a second exposure image, continuous with the first exposure image, incident from the incident surface and projects it into the resin material, and a controlling unit adjusts on a projection surface a boundary region between a first projection image obtained by projecting the first exposure image by the first projector and a second projection image obtained by projecting the second exposure image by the second projector.

Abstract: A method of forming a three-dimensional object is carried out by: providing a carrier and an optically transparent member having a build surface, the carrier and the build surface defining a build region therebetween; filling the build region with a polymerizable liquid; irradiating the build region through the optically transparent member to form a solid polymer from the polymerizable liquid while concurrently advancing the carrier away from the build surface to form the three-dimensional object from the solid polymer, while also concurrently: (i) continuously maintaining a dead zone of polymerizable liquid in contact with the build surface by electrochemically generating a polymerization inhibitor therein from a precursor of the polymerization inhibitor, and (ii) continuously maintaining a gradient of polymerization zone (e.g.

Abstract: Disclosed are embodiments of a three-dimensional (3D) printer for building 3D objects with layer based, additive manufacturing techniques. The hot end can be moved in a horizontal plane parallel a planar printing surface of the printing bed while the printing bed can be moved perpendicular to the planar printing surface to print a 3D object. The hot end can be part of an extrusion guide assembly. The 3D printer can auto-level the printing bed.

Abstract: The process for the realization of a window/door framework (1) for walls of building comprises a molding step of a perimeter frame (2) by means of a three-dimensional molding device (5, 6, 7, 9), wherein the perimeter frame (2) comprises a plurality of perimeter sides made in a single monolithic body.

Abstract: Methods provide for fabricating objects through additive manufacturing in a manner that compensates for deformations introduced during post-print processing, such as sintering. An initial model may be divided into a plurality of segments, the initial model defining geometry of an object. For each of the segments, modified geometry may be calculated, where the modified geometry compensates for a predicted deformation. Print parameters can then be updated to incorporate the modified geometry, where the print parameters define geometry of the printed object (e.g., configuration settings of the printer, a tool path, an object model). The object may then be printed based on the updated print parameters.

Abstract: An approach to improving optical scanning increases the strength of optical reflection from the build material during fabrication. In some examples, the approach makes use of an additive (or a combination of multiple additives) that increases the received signal strength and/or improves the received signal-to-noise ratio in optical scanning for industrial metrology. Elements not naturally present in the material are introduced in the additives in order to increase fluorescence, scattering or luminescence. Such additives may include one or more of: small molecules, polymers, peptides, proteins, metal or semiconductive nanoparticles, and silicate nanoparticles.

Abstract: An additive production assembly and method is provided by the present disclosure. The assembly includes a tank containing radiation-curable liquid and has at least one radiation-penetrable sidewall, a projector that projects at least one beam to the sidewall, and a transportation assembly to transport an object. The beam acts through the sidewall and an area of the liquid close to the sidewall is hardened to form the object. The object is transported along a transporting direction (T) in a sideward direction away from the sidewall, as a result of which liquid flows into a gap between the object and the sidewall.

Abstract: A method of forming a three-dimensional object, is carried out by: providing a carrier and an optically transparent member having a build surface, the carrier and the build surface defining a build region therebetween; filling the build region with a polymerizable liquid, intermittently irradiating the build region with light through the optically transparent member to form a solid polymer from the polymerizable liquid, and continuously or intermittently advancing the carrier away from the build surface to form the three-dimensional object from the solid polymer. In some embodiments, the filling, irradiating, and/or advancing steps are carried out while also concurrently: (i) continuously maintaining a dead zone of polymerizable liquid in contact with the build surface, and (ii) continuously maintaining a gradient of polymerization zone between the dead zone and the solid polymer and in contact with each thereof, the gradient of polymerization zone comprising the polymerizable liquid in partially cured form.

Abstract: A flood-fill method for parallel implementation includes the steps of receiving an image including first elements having a flood fill source colour to be replaced with a flood fill target colour, and second elements not having the flood fill source colour; dividing the image according to a hierarchical space-partitioning scheme to form cells at a plurality of levels in the hierarchy; detecting the occupancy of each cell by second elements; for any cell having no occupancy by second elements, set a depth elevation value for child cells of that cell to be one greater than the value for that cell, indicating that the flood fill shall navigate levels towards a root cell by the depth elevation amount of a cell whilst only occupying nodes without any second elements, thereby reaching the largest parent cell which can be flood-filled; and filling the flood fill source colour of cells having no occupancy by second elements with the flood fill target colour, thereby modifying the received image.

Abstract: A method for the layered construction of a shaped body of highly viscous photopolymerizable material, includes forming layers of the shaped body one after the other and one on top of the other by each forming a material layer of predetermined thickness (a) of the highly viscous photopolymerizable material in a tank, lowering a construction platform, or the shaped body at least partially formed on the construction platform, into the material layer so as to cause a layer of the highly viscous photopolymerizable material to form between the construction platform or the shaped body and the tank bottom, curing such layer in a position-selective manner, in particular by irradiation through the tank bottom, to provide the desired shape of the shaped body layer, wherein the thickness (a) of the material layer is varied at least once during the layered construction of the shaped body.

Abstract: An additive manufacturing (AM) system and method configured to fabricate a 3D printed object from a liquid photocurable composition is provided. The AM system comprises a gas sphere assembly and an AM assembly. The gas sphere assembly comprises a prep chamber and a generation system having a generation chamber including a gas sphere generation unit, a jet source chamber including a sphere unit, and a gas chamber, a reservoir, and a gas cylinder. When a gas is fed to the gas chamber and the liquid photocurable composition is fed to the jet source chamber and generation chamber, the gas is pushed through a plurality of first openings of the sphere unit, and then a plurality of micro-openings of the gas sphere generation unit, to generate the plurality of closed-packed gas spheres. The plurality of closed-packed gas spheres are employed in the AM system for fabrication of the 3D printed object.

Abstract: The present invention relates to articles prepared using a three-dimensional printing method, an auxiliary structure being additionally formed beyond an extension of the one or more components during the construction of components. The invention also relates to an auxiliary structure for components produced by means of three-dimensional printing methods, the auxiliary structure being constructed along with the component and extending beyond a dimension of the one or more components.

Abstract: A method of forming a three-dimensional body from a mixture, wherein the mixture can comprise dispersed solid polymeric particles and a curable binder. In a particular embodiment the solid polymeric particles can be fluoropolymeric particles. The method can include at least partial removal of the cured binder and sintering, to obtain a sintered polymeric three-dimensional body. In one embodiment, the sintered three-dimensional body can be PTFE.

Abstract: The invention relates to a device for constructing a laminar body from a plurality of superimposed layers of free-flowing material, in particular particulate material, and a build platform within a working area. The layers are solidified in locally predetermined regions by the action of binders and are joined together so that at least one moulded body is formed by the solidified and joined regions of the layers. The device comprises a discharging device movable back and forth over the working area in at least one discharge direction and having at least one discharge opening from which the free-flowing material can be discharged in individual superimposed layers during the movement of the discharging device.

Abstract: A system for building a structure. The system includes a reservoir; an immiscible fluid in the reservoir; a membrane operatively connected to the reservoir; channels and delivery ports in the membrane; a microliter amount of curable resin; a delivery system for delivering the microliter amount of curable resin to channels and delivery ports in the membrane and to the reservoir in contact with the immiscible fluid in the reservoir; and an energy source adapted to deliver energy to the reservoir onto the microliter amount of curable resin for building the structure.

Abstract: Doped glass scintillators and methods of fabricating the same are provided. Doped glass scintillators can be fabricated by a stereolithography process, and doping can be carried out before the green body composite formation so that homogeneity of the dopant is improved. The structures retain an amorphous structure through the fabrication process, and the vacuum sintering process assists with keeping the dopants in their luminescence-producing oxidation state.

Abstract: A method has been developed for repairing a cartilage lesion. The method includes bringing a three-dimensional porous substrate into direct contact with prepared bone. The three-dimensional porous substrate is fixedly coupled to a three-dimensional scaffold such that the substrate supports the scaffold. The three-dimensional porous substrate comprises at least three layers of woven fibers. The substrate is configured to be inserted into bone tissue including cartilage lesions such that the substrate and the scaffold replace the bone tissue including the cartilage lesions. The substrate and scaffold are further configured such that after the substrate and the scaffold have replaced the bone tissue including the cartilage lesions, the substrate and scaffold promote growth and integration of new bone tissue into the implant.

Abstract: The present disclosure provides a printer system based on high power, high brightness visible laser source for improved resolution and printing speeds. Visible laser devices based on high power visible diodes can be scaled using the stimulated Raman scattering process to create a high power, high brightness visible laser source.

Abstract: The present disclosure provides methods, systems, and apparatuses relating to hardware configurations for performing multi-wavelength three dimensional (3D) printing using photoinhibition. In at least one aspect, a system for 3D printing comprises a reservoir capable of holding a liquid including a photoactive resin, a build head that undergoes relative motion within the reservoir during 3D printing of a 3D object on the build head, a light projection device that projects a photoinitiation light beam at a first wavelength into a build area within the liquid, and a plurality of light sources arranged with respect to the light projection device and the reservoir that project a plurality of photoinhibiting light beams into the build area at a second wavelength. Each of the plurality of photoinhibition light beams may be projected at a peak intensity in a different respective position in the build area.

Abstract: Performing shaping of a shaped object more efficiently. A shaping apparatus configured to shape a shaped object in three-dimensional, includes: ejection heads being object-shaping material heads configured to eject an object-shaping material constituting the shaped object; and an ejection head being a support material head configured to eject a support material being a material of a support layer. The support layer is removable by being immersed in a predetermined liquid, and in a case of forming the support layer, the shaped object is shaped while at least a part of the support layer is immersed in the predetermined liquid in at least a part of a period during the shaping of the shaped object.

Abstract: A 3D printer includes a resin reservoir arranged for being filled with a predetermined amount of liquid resin, a light exposure module, and a control processor. The light exposure module includes a plurality of light sources supported above the resin reservoir, wherein each of the light sources is arranged for flashing a discrete image to solidify the liquid resin in the resin reservoir. The control processor controls the light sources to flash the discrete images at the same time and to combine the discrete images into a combined image for forming a layer of a 3D object when the liquid resin is solidified.

Abstract: To build an object more appropriately. A building apparatus for building an object in three-dimensional includes: an ejection head serving as a head for an object material that eject the object material constituting the object; an ejection head serving as a head for a support material that ejects the support material; and an ejection head serving as a head for a fluid material that ejects the fluid material. In a case of forming a support layer, part of the support layer is formed with the support material, and at least the other part of the support layer is formed with the fluid material.

Abstract: Sulfur copolymers having high sulfur content for use as raw materials in 3D printing. The sulfur copolymers are prepared by melting and copolymerizing one or more comonomers with cyclic selenium sulfide, elemental sulfur, elemental selenium, or a combination thereof. Optical substrates, such as films and lenses, are constructed from the sulfur copolymer via 3D printing and are substantially transparent in the visible and infrared spectrum. The optical substrates can have refractive indices of about 1.75-2.6 at a wavelength in a range of about 500 nm to about 8 ?m.

Abstract: A three-dimensional shape information generating system, a three-dimensional shape forming apparatus, a three-dimensional shape information generating method, and a program, each of which is capable of forming a three-dimensional-shaped object that has an arbitrary outer shape and is used to cultivate plants.

Abstract: An optical shaping apparatus includes a light modulation element having a plurality of pixels and configured to modulate light from a light source for each pixel, a controller configured to control the light modulation element based on each of a plurality of two-dimensional shape data obtained from three-dimensional shape data, and a moving member configured to move a cured portion cured by the modulation light among the photocurable resin in a direction separating from the light-transmissive portion. The controller controls the light modulation element so as to irradiate the modulation light of an irradiation light amount corresponding to a light amount necessary for curing for each resin area, onto each of a plurality of resin areas in the photocurable resin based on a temperature distribution or a temperature change in the photocurable resin.

Abstract: A support for supporting a workpiece from below efficiently while reducing the amount of necessary materials, and a shaping method for shaping the workpiece and support efficiently includes a hollow state support for supporting a workpiece from below, and the hollow state support has a lattice form with crossing of straight linear or curved columnar bodies, wherein a sintered strength at a connecting region with the workpiece is lower than the sintered strength at the other regions.

Abstract: Systems and methods for reducing charged powder particle scattering in powder-bed fusion (PBF) systems are provided. A PBF apparatus can include a structure that supports a layer of powder material having a plurality of particles of powder. For example, the structure can be a build plate, a build floor, a build piece, etc. The apparatus can also include an energy beam source that generates an energy beam and a deflector that applies the energy beam to fuse an area of the powder material in the layer. The energy beam can electrically charge the particles of powder. The apparatus can also include an electrical system that generates an electrical force between the structure and the charged particles of powder. For example, the electrical system can include a voltage source that applies a first voltage to the structure.

Abstract: The present disclosure is drawn material sets, coalescent fluids, and 3-dimensional printing systems. An example material set can include an amorphous polymer powder having an average particle size from 1 micron to 300 microns, and a coalescent fluid including a viscosity reducing agent.

Abstract: An additive manufacturing device has a vessel for containing a polymerizable material, a build platform and a curing unit. The vessel has a flexible wall which is at least partially transparent to radiation at one or more wavelengths at which the material is polymerizable. The build platform is movable relative to the vessel to position a build surface thereof to face the flexible wall. The curing unit has a rigid component with a planar contact surface, the rigid component being at least partially transparent to radiation at the one or more curing wavelengths, and a radiation module positioned to emit radiation through the rigid component. The rigid component and the vessel are movable relative to each other. In a first position, the planar contact surface of the rigid component is in contact with the flexible wall, and in a second position, the rigid component is separated therefrom.

Abstract: A method and a device for producing blow-molded containers, which are sterile at least in some areas, in a blow-molding machine. A preform made of a thermoplastic material is first heated, then stretched by a stretching rod in a blowing station, and then supplied with a pressurized fluid via a blow nozzle, wherein a sterilization device is arranged in the blowing station. The sterilization device has at least one radiation source which emits a sterilizing radiation onto the stretching rod and/or onto the blow nozzle.

Abstract: Systems, methods, and computer readable medium to provide patterned layer deposition of liquid types to a plate surface in layers organized in layouts with sites of patterns aligned to a plate origin of the plate surface. At least one layer includes a layout defining a geometric layout of the plate surface.

Abstract: A system, method and computer program product for an additive manufacturing or three dimensional (3D) printing system, including a build point, located at a n origin of a Spherical coordinate system; a theta axis motor configured to incrementally control rotation of the build point in relation to an extruder head along the theta axis; a phi axis motor configured to incrementally control rotation of the build point in relation to the extruder head along the phi axis perpendicular to the theta axis; and a rho radius motor configured to incrementally control the extruder head to a desired radius from the build point.

Abstract: A computing device for controlling the operation of an additive manufacturing machine comprises a memory element and a processing element. The memory element is configured to store a three-dimensional model of a part to be manufactured, wherein the three-dimensional model defines a plurality of cross sections of the part. The processing element is in communication with the memory element. The processing element is configured to receive the three-dimensional model, determine a path across a surface of each cross section, wherein the path includes a plurality of parallel lines, calculate a power for a radiation beam to scan each of the lines, such that the power varies from line to line non-linearly according to a length of the line, and calculate a scan speed for the radiation beam for each of the lines, such that the scan speed varies line to line non-linearly according to the power of the radiation beam.

Abstract: An imprint apparatus performs imprint processing of supplying a second composition having a property of being cured onto a substrate to which a first composition not having a property of being cured in an uncured state is supplied, bringing a mold into contact with a mixed layer of the first composition and the second composition, which is formed by the supplying, curing the mixed layer, separating the mold from the cured mixed layer, and forming a pattern on the mixed layer. When unloading the substrate outside the apparatus before completion of the imprint processing for all shot regions of the substrate, the apparatus supplies the second composition to a portion on the substrate in which the first composition is in an uncured state and performs curing processing of curing the mixed layer formed in the portion before the unloading.

Abstract: A computing device for controlling the operation of an additive manufacturing machine comprises a memory element and a processing element. The memory element is configured to store a three-dimensional model of a part to be manufactured, wherein the three-dimensional model defines a plurality of cross sections of the part. The processing element is in communication with the memory element. The processing element is configured to receive the three-dimensional model, determine a plurality of paths, each path including a plurality of parallel lines, determine a radiation beam power for each line, such that the radiation beam power varies non-linearly according to a length of the line, and determine a radiation beam scan speed for each line, such that the radiation beam scan speed is a function of a temperature of a material used to manufacture the part, the length of the line, and the radiation beam power for the line.