A method of layerwise building up an object from at least a first and a second light hardenable resin on a 3D printing device, and a 3D printing device that is configured to perform such a method. The 3D printing device has a build platform on which the object can be built up, a light-transmissive carrier comprising a plurality of recesses and a light projector for projecting a light-pattern through the carrier. The method has the steps of (a) partially building up the object and thereby providing an object-in-process; (b) coating a first surface area of the carrier with a first blank layer of the first light hardenable resin; (c) moving the carrier and thereby positioning the first blank layer between the build platform and the light projector; (d) bringing the object-in-process into contact with the first blank layer; (e) irradiating the first blank layer with a light pattern and thereby supplementing the object-in-process by a hardened layer; and (f) separating the supplemented object-in-process from the carrier.

A method of layerwise building up an object from at least a first and a second light hardenable resin on a 3D printing device, and a 3D printing device that is configured to perform such a method. The 3D printing device has a build platform on which the object can be built up, a light-transmissive carrier comprising a plurality of recesses and a light projector for projecting a light-pattern through the carrier. The method has the steps of (a) partially building up the object and thereby providing an object-in-process; (b) coating a first surface area of the carrier with a first blank layer of the first light hardenable resin; (c) moving the carrier and thereby positioning the first blank layer between the build platform and the light projector; (d) bringing the object-in-process into contact with the first blank layer; (e) irradiating the first blank layer with a light pattern and thereby supplementing the object-in-process by a hardened layer; and (f) separating the supplemented object-in-process from the carrier.

An improved method and apparatus for adding a new layer to a stack of previously processed layers. In an example, a method is provided for mounting the previously processed layer on a build platform, mounting the new layer on a substrate, aligning the new layer with the previously processed layer, moving the new layer and the previously processed into contact with one another, and applying energy to the new layer from an energy source through the substrate to simultaneously process the new layer and bond the new layer to the previously processed layer to form a bonded processed multilayer stack on the build platform. A flexible compliant pressure conveyance media is moved into contact with the substrate to apply pressure to the new layer while the energy is being applied.

An improved method and apparatus for adding a new layer to a stack of previously processed layers. In an example, a method is provided for mounting the previously processed layer on a build platform, mounting the new layer on a substrate, aligning the new layer with the previously processed layer, moving the new layer and the previously processed into contact with one another, and applying energy to the new layer from an energy source through the substrate to simultaneously process the new layer and bond the new layer to the previously processed layer to form a bonded processed multilayer stack on the build platform. A flexible compliant pressure conveyance media is moved into contact with the substrate to apply pressure to the new layer while the energy is being applied.

A multi-beam volumetric resin curing system and method for whole-volume additive manufacturing of an object includes a bath containing a photosensitive resin, a light source for producing a light beam, and a spatial light modulator which produces a phase- or intensity-modulated light beam by impressing a phase profile or intensity profile of an image onto a light beam received from the light source. The system and method also include projection optics which then produces multiple sub-image beams from the modulated light beam which are projected to intersect each other in the photosensitive resin to cure select volumetric regions of the resin in a whole-volume three-dimensional pattern representing the object.

A multi-beam volumetric resin curing system and method for whole-volume additive manufacturing of an object includes a bath containing a photosensitive resin, a light source for producing a light beam, and a spatial light modulator which produces a phase- or intensity-modulated light beam by impressing a phase profile or intensity profile of an image onto a light beam received from the light source. The system and method also include projection optics which then produces multiple sub-image beams from the modulated light beam which are projected to intersect each other in the photosensitive resin to cure select volumetric regions of the resin in a whole-volume three-dimensional pattern representing the object.

A three dimensional printing apparatus including a carrying plate, a transparent plate, an elastic film, and a bump is provided. The transparent plate is disposed on the carrying plate. The elastic film is disposed on the transparent plate. The bump is disposed between the elastic film and the carrying plate. An interface between the transparent plate and the elastic film is in communication with an external space through a fluid channel between each bump and the elastic film. An orthographic projection area of the bump on the transparent plate is not more than ¼ of a surface area of the transparent plate.

A three dimensional printing apparatus including a carrying plate, a transparent plate, an elastic film, and a bump is provided. The transparent plate is disposed on the carrying plate. The elastic film is disposed on the transparent plate. The bump is disposed between the elastic film and the carrying plate. An interface between the transparent plate and the elastic film is in communication with an external space through a fluid channel between each bump and the elastic film. An orthographic projection area of the bump on the transparent plate is not more than ¼ of a surface area of the transparent plate.

The present disclosure relates to a three-dimensional printing kit comprising: a powder bed material comprising polymer particles; a fusing agent comprising a radiation absorber and a liquid carrier; and a magnetic marking agent comprising magnetic nanoparticles, a humectant and a liquid carrier, wherein the concentration of magnetic nanoparticles is 5 to 70 weight % based on the total weight of the magnetic agent. The present disclosure also relates to a method of three-dimensional (3D) printing a 3D printed object. The method comprises: selectively applying a magnetic marking agent onto powder bed material, wherein the powder bed material comprises polymer particles, and wherein the magnetic marking agent comprises magnetic nanoparticles and a liquid carrier; selectively fusing the powder bed material, such that the magnetic nanoparticles are incorporated in the 3D printed object in a predetermined arrangement that forms a detectable marker in the 3D printed object.

The present disclosure relates to a three-dimensional printing kit comprising: a powder bed material comprising polymer particles; a fusing agent comprising a radiation absorber and a liquid carrier; and a magnetic marking agent comprising magnetic nanoparticles, a humectant and a liquid carrier, wherein the concentration of magnetic nanoparticles is 5 to 70 weight % based on the total weight of the magnetic agent. The present disclosure also relates to a method of three-dimensional (3D) printing a 3D printed object. The method comprises: selectively applying a magnetic marking agent onto powder bed material, wherein the powder bed material comprises polymer particles, and wherein the magnetic marking agent comprises magnetic nanoparticles and a liquid carrier; selectively fusing the powder bed material, such that the magnetic nanoparticles are incorporated in the 3D printed object in a predetermined arrangement that forms a detectable marker in the 3D printed object.