Abstract: A hardened build platform for use in three-dimensional (3D) printing systems employing photosensitive resins with suspended ceramic particles. The build platform includes a build surface that includes a layer of material with a Mohs hardness rating that is equal to or greater than the Mohs hardness rating of the ceramic particles suspended in the photosensitive resin. The layer of hardened material includes anodized aluminum, ceramic, or glass. The build surface also may be roughened to increase the adhesion between the 3D printed part and the hardened build surface.

Abstract: The invention is generally a nasal pharyngeal and oral swab that may be mass-produced via three-dimensional (3D) printing. To achieve the right materials for 3D printing the swabs, exemplary embodiments employ a set of materials that result in a rigid structure that has bendable properties (at least in the neck or stem region of the swab), but more rigid and bridle properties at a breakpoint of the swab. In exemplary embodiments, this may be achieved by constructing the device of a first photosensitive material that is generally soft and bendable when cured, and a second photosensitive material that is generally rigid and brittle when cured, wherein the soft bendable material comprises of about 70% to 90% of the photosensitive composition used to 3D print the swab, and the rigid and brittle material comprises of about 30% to 10% of the photosensitive composition used to 3D print the swab.

Abstract: The invention is generally a system for washing off residual resin from objects which are three-dimensionally (3D) printed through a vat polymerization (VP) process. Exemplary systems may include a solvent receptacle, a wash reservoir in fluid communication with the solvent receptacle, and a controller configured to pump a solvent from the solvent receptacle to the wash reservoir for washing off residual resin from a 3D-printed object. Exemplary methods may include pumping a first solution of a plurality of solvent solutions from the solvent receptacle to the wash reservoir, dispersing the first solution onto the 3D-printed object, pumping the first solution from the wash reservoir to the solvent receptacle, pumping a second solution of the plurality of solvent solutions from the solvent receptacle to the wash reservoir, and dispersing the second solution onto the 3D-printed object.

Abstract: The present subject matter is directed towards a system and a method for selectively post-curing a three-dimensional (3D-printed) object to attain variable properties. The system comprises a selective post-curing chamber coupled to a computer in communication with a database for accessing a digital model or data concerning the 3D-printed object. The chamber comprises a movable light source assembly and a mounting platform for supporting at least one 3D-printed object thereon. The computer includes one or more executable instructions for selectively emitting a curing light onto the 3D-printed object along a predetermined curing toolpath based on the digital model. The curing of the 3D-printed object along the predetermined curing toolpath generates variable properties along different regions of the 3D-printed object.

Abstract: The present invention concerns a system and reservoir assembly for three-dimensional (3D) printing. The reservoir assembly includes a top frame that may be filled with liquid material, and a tensioned film being held underneath the top frame. The tensioned film may be air permeable and flexible, wherein surfaces of the tensioned film may be micro textured. A bottom frame is coupled to the top frame and secures a transparent or semi-transparent rigid substrate. A permeable substrate is sandwiched between the tensioned film secured to the top frame and the transparent or semi-transparent rigid substrate secured to the bottom frame.

Abstract: A system and method for providing three-dimensional printing is disclosed. The three-dimensional printing technology includes enhanced functionality to provide better resolution printing, filtration of forming materials stored within a reservoir tank, and a simple and efficient cleaning process to remove debris from the reservoir subsequent to a printing cycle.

Abstract: The invention is generally a system for drying, recycling, and washing off residual resin from three-dimensionally (3D) printed objects. Exemplary systems may include a wash reservoir, a fan module, and one or more air exchange vents. The wash reservoir contains a wash solvent and a propeller fully or partially submerged into the wash solvent. The propeller splashes the wash solvent upwards to disperse on the 3D printed object, thereby largely washing away the resin residue present in the 3D printer object. The fan module is connected to the wash reservoir to create a positive or negative air pressure inside the wash reservoir, thereby redirecting the airflow to the wash reservoir. The air exchange vents are provided between a splash guard and a platform/lid of the wash reservoir to act as an air intake when the fan module blows air out of the wash reservoir and as an exhaust vice versa.

Abstract: A three-dimensional (3D) printing system is provided. The printing system includes a resin tank assembly with a sliding scraper, an automatic resin dispensing system, sensors configured to measure various aspects of the system, e.g., the volume of resin within the resin tank and/or within the resin dispensing system, a rigid releasable interface between the lift arm and the build platform, a resin heating system, a magnetic interface between the resin tank and the base assembly, a resin tank locking system, and other novel aspects.

Abstract: The invention is generally a system for drying, recycling, and washing off residual resin from three-dimensionally (3D) printed objects. Exemplary systems may include a system for washing off residual printing material from a surface of a 3D-printed. In an exemplary embodiment, a chamber is adapted to receive the 3D-printed object and a printing material disruption module is adapted to disrupt a composition of residual printing material on a surface of the 3D-printed object. Additionally, a washing force module may be adapted to apply a washing force field to the 3D-printed object and wash off the residual printing material.

Abstract: The present subject matter is directed towards a system and a method for selectively post-curing a three-dimensional (3D-printed) object to attain variable properties. The system comprises a selective post-curing chamber coupled to a computer in communication with a database for accessing a digital model or data concerning the 3D-printed object. The chamber comprises a movable light source assembly and a mounting platform for supporting at least one 3D-printed object thereon. The computer includes one or more executable instructions for selectively emitting a curing light onto the 3D-printed object along a predetermined curing toolpath based on the digital model. The curing of the 3D-printed object along the predetermined curing toolpath generates variable properties along different regions of the 3D-printed object.

Abstract: The invention is generally a system for drying, recycling, and washing off residual resin from 3D-printed objects. Exemplary systems may include a system for drying off residual resin from 3D-printed objects. The system may include a wash reservoir including a chamber for housing the 3D printed object and containing a wash solvent or liquid solvent adapted to at least partially remove residual residue present in the 3D printer object. Air exchange vents provided between a splash guard or a lid of the wash reservoir may be adapted to act as an air intake or an air exhaust. An airflow module in fluid communication with the air vents and the chamber may be adapted to create a positive or negative air pressure inside the wash reservoir for redirecting airflow to the chamber housing the 3D printed object, and blowing air out or into the chamber to dry the 3D-printed object.

Abstract: The invention is a system for drying, recycling, and washing off residual resin from 3D-printed objects. Some aspects of the invention include a system for recycling solvents used to clean the 3D-printed objects in a washing chamber. The recycling system may include one or more solvent reservoirs that store a solvent for cleaning residual 3D-printing material off of 3D-printed objects, a wash chamber adapted to clean the 3D-printed objects, and a solvent recycling module. The solvent recycling module receives a saturated solvent from the one or more solvent reservoirs, evaporates or condenses the saturated solvent to remove residual 3D-printing material from the saturated solvent, and returns clean solvent to the one or more solvent reservoirs of the system.

Abstract: The present invention concerns a system and reservoir assembly for three-dimensional (3D) printing. The reservoir assembly includes a top frame that may be filled with liquid material, and a tensioned film being held underneath the top frame. The tensioned film may be air permeable and flexible, wherein surfaces of the tensioned film may be micro textured. A bottom frame is coupled to the top frame and secures a transparent or semi-transparent rigid substrate. A permeable substrate is sandwiched between the tensioned film secured to the top frame and the transparent or semi-transparent rigid substrate secured to the bottom frame.

Abstract: A system and method for providing three-dimensional printing is disclosed. The three-dimensional printing technology includes enhanced functionality to provide better resolution printing, filtration of forming materials stored within a reservoir tank, and a simple and efficient cleaning process to remove debris from the reservoir subsequent to a printing cycle.

Abstract: The present invention concerns a system and reservoir assembly for three-dimensional (3D) printing. The reservoir assembly includes a top frame that may be filled with liquid material, and a tensioned film being held underneath the top frame. The tensioned film may be air permeable and flexible. A bottom frame is coupled to the top frame and secures a transparent or semi-transparent rigid substrate. A tempered glass substrate is sandwiched between the tensioned film secured to the top frame and the transparent or semi-transparent rigid substrate secured to the bottom frame. One or more spacers may be placed between the rigid substrate and the tempered glass substrate to form air gaps therebetween.

Abstract: The present invention concerns a reservoir assembly for use in three-dimensional (3D) printing for building a 3D object, which includes a top frame that may be filled with liquid material, and a tensioned film being held underneath the top frame. The tensioned film may be air permeable and elastic at the same time, wherein surfaces of the tensioned film are micro textured so that the tensioned film becomes optically clear when it contacts with the liquid material. The tensioned film minimizes the creation of bubbles between the top and bottom surfaces. This also helps blurring the boundaries thereby enhancing the surface finish of the fabricated parts.