Abstract: A system for three-dimensional printing is disclosed. The system comprises: a rotary tray configured to rotate about a vertical axis; a printing head, each having a plurality of separated nozzles; and a controller configured for controlling the inkjet printing head to dispense, during the rotation, droplets of building material in layers, such as to print a three-dimensional object on the tray.

Abstract: A scanning 3-D printing system comprises a printing platform movable in a printing direction and in an indexing direction, the printing platform comprising a printing head configured for dispensing building material while the printing platform is moving in a printing direction one pass at a time, and layer by layer, a roller configured for leveling the dispensed building material one pass at a time, wherein the roller is rotatably mounted on a roller axle, and wherein the roller axle extends over all passes of the printing system and is stationary in the indexing direction, a scraper configured for scraping excess building material off the roller, and a trough configured for collecting the building material scraped off the roller.

Abstract: System for controlling fabrication of three-dimensional objects, layer by layer are disclosed. The system includes a printing assembly having an irradiation unit and a printing head, the printing assembly is movable between a printing area and a service area. The system further includes a light sensor positioned at the service area to measure the output radiation power of the irradiation unit and a controller to receive information from the sensor and to automatically adjust the electrical power supplied to the irradiation unit.

Abstract: Embodiments of the present invention are directed to a system and method for controlling fabrication of three-dimensional objects, layer by layer, the system comprising a printing assembly, including an irradiation unit and a printing head, the printing assembly is movable between a printing area and a service area. A light sensor positioned at the service area to measure output radiation power of the irradiation unit at a printing plane and a controller to receive information from the sensor and to automatically adjust electrical power supplied to the irradiation unit based on the information.

Abstract: A scanning 3-D printing system comprises a printing platform movable in a printing direction and in an indexing direction, the printing platform comprising a printing head configured for dispensing building material while the printing platform is moving in a printing direction one pass at a time, and layer by layer, a roller configured for leveling the dispensed building material one pass at a time, wherein the roller is rotatably mounted on a roller axle, and wherein the roller axle extends over all passes of the printing system and is stationary in the indexing direction, a scraper configured for scraping excess building material off the roller, and a trough configured for collecting the building material scraped off the roller.

Abstract: A scanning 3-D printing system comprises a printing platform movable in a printing direction and in an indexing direction, the printing platform comprising a printing head configured for dispensing building material while the printing platform is moving in a printing direction one pass at a time, and layer by layer, a roller configured for leveling the dispensed building material one pass at a time, wherein the roller is rotatably mounted on a roller axle, and wherein the roller axle extends over all passes of the printing system and is stationary in the indexing direction, a scraper configured for scraping excess building material off the roller, and a trough configured for collecting the building material scraped off the roller.

Abstract: A three-dimensional printing system to print three-dimensional objects and a method of printed are disclosed. The system includes one or more printing heads, two or more cartridges, two or more sensors configured to determine the status of building material in the cartridges and a controller configured to receive data from the sensors and to control switching of building material supply from one cartridge to another. The printing method includes measuring data from two or more sensors to determine the status of the three-dimensional building material in the cartridges, controlling supply of the building material based on data received from the sensors and controlling switching of building material supply from one cartridge to another.

Abstract: A material supply apparatus for supplying printing materials to a printing system is provided. The apparatus includes a container to store printing material and a source of electromagnetic radiation to cure remnant printing material within the container. The printing system may be a three-dimensional printing system for producing three-dimensional objects.

Abstract: A material supply apparatus for supplying printing materials to a printing system is provided. The apparatus includes a container to store printing material and a source of electromagnetic radiation to cure remnant printing material within the container. The printing system may be a three-dimensional printing system for producing three-dimensional objects.

Abstract: A cartridge apparatus for supplying materials to a three-dimensional printing system is provided. The cartridge apparatus may include a cartridge, a data storage device to record data relating to a material contained within the cartridge and a reader to read data from the data storage device and transmit the data to a controller of the printing system.

Abstract: A scanning 3-D printing system comprises a printing platform movable in a printing direction and in an indexing direction, the printing platform comprising a printing head configured for dispensing building material while the printing platform is moving in a printing direction one pass at a time, and layer by layer, a roller configured for leveling the dispensed building material one pass at a time, wherein the roller is rotatably mounted on a roller axle, and wherein the roller axle extends over all passes of the printing system and is stationary in the indexing direction, a scraper configured for scraping excess building material off the roller, and a trough configured for collecting the building material scraped off the roller.

Abstract: A cartridge apparatus for supplying materials to a three-dimensional printing system is provided. The cartridge apparatus may include a cartridge, a data storage device to record data relating to a material contained within the cartridge and a reader to read data from the data storage device and transmit the data to a controller of the printing system.

Abstract: Embodiments of the present invention are directed to a system and method for controlling fabrication of three-dimensional objects, layer by layer, the system comprising a printing assembly, including an irradiation unit and a printing head, the printing assembly is movable between a printing area and a service area. A light sensor positioned at the service area to measure output radiation power of the irradiation unit at a printing plane and a controller to receive information from the sensor and to automatically adjust electrical power supplied to the irradiation unit based on the information.

Abstract: A method suitable for solid freeform fabrication is disclosed. The method comprises mixing respective amounts of a plurality of materials such as to provide a building material characterized by at least one attribute, and using the building material for fabricating a three-dimensional object.

Abstract: Apparatus and method for controlling modeling material supply in a three-dimensional object-printing system (100). The apparatus may include one or more cartridges (180) containing modeling materials that may be connected via a set or matrix of valves (175) to the three-dimensional object printing system (100). Sensors (185) associated with the cartridges (180) may continuously or periodically monitor the status of the material within the cartridges. The controller receives data about the material presently available in each cartridge (180) and computes supply parameters for the available materials in the various cartridges (180).

Abstract: Apparatus and method for controlling modeling material supply in a three-dimensional object-printing system (100). The apparatus may include one or more cartridges (180) containing modeling materials that may be connected via a set or matrix of valves (175) to the three-dimensional object printing system (100). Sensors (185) associated with the cartridges (180) may continuously or periodically monitor the status of the material within the cartridges. The controller receives data about the material presently available in each cartridge (180) and computes supply parameters for the available materials in the various cartridges (180).