9 results about "Volumetric printing" patented technology

The present invention relates to a process for volumetric printing of a shaped body comprising locally polymerizing a starting material comprising a bio-co-initiator.

A method for volumetric printing a three-dimensional object by multi-color photopolymerization of a photocurable resin.

The utility model relates to the technical field of three-dimensional printing, in particular to a polarized light three-dimensional anti-counterfeit printing device which comprises a first supporting frame, a conveying assembly, a second supporting frame, an ink storage box, a sealing cover, an ink conveying pipe, a water pump, a first air cylinder and a printing plate. The second supporting frame is fixedly connected with an ink storage box, the ink storage box is covered with a sealing cover, two first air cylinders are installed in the second supporting frame, a printing plate is installed between telescopic rods of the two first air cylinders, and an ink conveying pipe is connected between the printing plate and the ink storage box. A motor is started, a printed matter is placed on a conveying assembly, an output shaft of the motor rotates to drive a clamping rod, a shaft rod and a dust-sticking roller to rotate, the conveying assembly drives the printed matter to move backwards, dust and impurities on the surface of the printed matter are removed while the dust-sticking roller rotates, and particles are prevented from being pressed into printing ink or materials in the printing process; therefore, printing defects are reduced.

The present invention relates to volumetric additive manufacturing (3D printing) through holograms for manufacturing high performance components with high mechanical properties at low cost and with low environmental impact from a wide variety of different materials, including but not limited to metallic materials, ceramic materials, polymeric materials and / or combinations thereof. The invention further relates to the apparatus used, and to the printed components.

The invention relates to spiropyrans and a method of making the same. In particular, the present invention provides a method of exchanging the indole and salicylaldehyde moieties of spiropyrans in a reversible reaction. The method is used for synthesizing two-color photoinitiators with specific substituents and substitution patterns, which improves two-color volume printing (two-color volume printing). In addition, the invention also discloses a method for locally polymerizing a starting material through two-color photopolymerization.

A method for volumetric printing a dental component by photopolymerization of a photocurable resin.

A method of fabricating at least one three-dimensional object by volumetric printing is disclosed.

The present invention includes methods for reducing photoexcitation of a photoswitchable photoinitiator in volumetric printing including a volume of a photohardenable composition at locations in the volume at which intersection of two wavelengths does not occur; methods of three-dimensional (3D) printing including dual-wavelength photoexcitation of a photohardenable composition included in a volume, the method including photoexcitation by a modified or controllably-sized light sheet including a first wavelength and an optical projection including a second wavelength; and methods for extending the reuse-printing lifetime of a photohardenable composition including a photoswitchable photoinitiator. Preferably the photohardenable composition includes the dual- wavelength photoinitiator and a photohardenable resin component. The present invention also includes a photohardenable composition including a photoswitchable photoinitiator with an improved reuse-printing lifetime.