Abstract: The present invention discloses a 3D food printer, which comprises a large hopper in a print head with a cooling system, so as to store and supply a large amount of a food material and print reliably at a high ambient temperature, and an automatic conveying system for printed products, so as to automatically output the food product after printing it, and then proceed with the next one. These features make the printer more effective, easier to operate, and in line with the requirements of food hygiene.

Abstract: A computer-controlled apparatus and method for producing metallic parts by laser melting selected regions of a layer(s) of metal powder at a target area are disclosed. The system includes devices for preheating and maintaining a relatively high temperature, e.g. 400° C., of the metal powder so as to join the metal powder together with relatively low laser power, e.g. a 200W CO2 laser. A major powder depositing mechanism with a scraper and a depositing system for a secondary powder are included in the apparatus that allows the powders to be delivered to the target area for selective melting. The metal powder is preheated at either a dispensing cylinder or the target area through thermal conduction and/or is also heated by a heating plate positioned above the platform through radiation. The corresponding machine structures, such as a motion system and a working chamber, are designed to be able to withstand and operated under the high temperature environment.

Abstract: A computer-controlled apparatus and method for producing metallic parts by laser melting selected regions of a layer(s) of metal powder at a target area are disclosed. The system includes devices for preheating and maintaining a relatively high temperature, e.g. 400° C., of the metal powder so as to join the metal powder together with relatively low laser power, e.g. a 200W CO2 laser. A major powder depositing mechanism with a scraper and a depositing system for a secondary powder are included in the apparatus that allows the powders to be delivered to the target area for selective melting. The metal powder is preheated at either a dispensing cylinder or the target area through thermal conduction and/or is also heated by a heating plate positioned above the platform through radiation. The corresponding machine structures, such as a motion system and a working chamber, are designed to be able to withstand and operated under the high temperature environment.