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. In exemplary embodiments, one or more filters may be positioned below the tensioned film. The one or more filters may employ a texture that is adapted to control blurring of a projected image during a printing process in order to enhance a surface finish of a 3D-printed object.

Abstract: A system and method of adjusting a dental appliance by modifying a corresponding digital dental appliance model. The system includes an additive manufacturing system (e.g., a 3D printer system) and a controller running software. The system is designed to (i) 3D print a dental appliance using an initial digital dental appliance model, (ii) determine any portions of the printed dental appliance that may require modification, (iii) automatically adjust the appliance's digital model by performing pixel offsetting to implement a modification, and (iv) reprint the appliance using the modified digital model.

Abstract: The invention is a system and method for printing 3D objects that employs a hydraulic device. The device may comprise a cartridge or container assembly, which may be single-use or disposable. The container assembly may unitarily house a structure such as a piston, a platform, multiple chambers, and a channel, wherein the channel and chambers are fluidly connected and configured to hold enough of a 3D printing material suitable for printing a single 3D object. In exemplary embodiments, moving the piston transfers 3D printing material from one chamber to another chamber in which the platform is situated; radiation from a light engine coupled to the chamber that includes the platform exposes the 3D printing material to a curing light on a surface of the platform or onto a cured layer of the printing material on the platform, in order to build the 3D object on the platform.

Abstract: A system and method of adjusting a dental appliance by modifying a corresponding digital dental appliance model. The system includes an additive manufacturing system (e.g., a 3D printer system) and a controller running software. The system is designed to (i) 3D print a dental appliance using an initial digital dental appliance model, (ii) determine any portions of the printed dental appliance that may require modification, (iii) automatically adjust the appliance's digital model by performing pixel offsetting to implement a modification, and (iv) reprint the appliance using the modified digital model.

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 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: 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 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: 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 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 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.