103 results about "Volumetric printing" patented technology

A three-dimensional (3D) printing structure that includes an object and a support member is provided. The support member is located on one side of the object to support the object. The support member includes a plurality of support bricks and a filler. The support bricks are stacked together. A first portion of the filler fills the space among the support bricks, and a second portion of the filler fills the space between the object and the support bricks adjacent to the object. Accordingly, the support member of the 3D printing structure is able to support the object, and thus the object can be formed through 3D printing.

Three-dimensional printing processes are disclosed which utilize printable fluids comprising a carrier fluid, a polymeric binder, and nanoparticles. The three-dimensional printing processes are useful for making articles from a build material powder, e.g., a ceramic, metal, metal alloy, or intermetallic powder. The nanoparticles enable low temperature interparticle bonding of the build material powder particles, e.g., by forming bridging bonds between adjacent powder particles, and / or increasing the interparticle friction between the build material powder particles to enhance the structural strength of the as-built article during a thermal treatment over at least a part of the temperature range which has as its low end the temperature at which the structural strength due to the binder becomes insubstantial and as its high end the temperature at which the structural strength due to interparticle sintering of the build material powder becomes substantial, i.e., the article's debile temperature range. Green density improvements are achievable.

A three-dimensional printing method for forming a three-dimensional object on a base is provided. The method comprises providing a model library comprising at least one supporting member, selecting the at least one supporting member from the model library and disposing the at least one supporting member onto the base. The three-dimensional object is printed over the base and the at the least supporting member, and the three-dimensional object has an overhanging portion relative to the base and the at least one supporting member is filled between the overhanging portion and the base.

A three-dimensional printing apparatus including a swing tank containing a liquid formation material, a swing mechanism, an elevating platform, a light source and a control unit is provided. The swing tank includes a pivot side and a swing side adapted to be swung about the pivot side. The swing mechanism includes a cam and a driving motor. The cam leans against the swing side for swinging the same. The elevating platform and the light source are respectively disposed above and below the swing tank. The control unit controls the elevating platform to immerge into the liquid formation material. The light source cures the liquid formation material between the elevating platform and the bottom of the swing tank. The control unit then controls the swing mechanism to swing the swing side, so the cured liquid formation material is separated from the bottom and located on the elevating platform.

The invention provides a printing method and device for an anti-counterfeiting two-dimensional code with a printing height. The printing method comprises the following steps: selecting the printing height from the preset height range; generating a three-dimensional anti-counterfeiting image according to the printing height and the anti-counterfeiting information of a product; and printing on the corresponding printing substrate of the product according to the three-dimensional anti-counterfeiting image and the preset printing height in a three-dimensional printing manner, so as to obtain the anti-counterfeiting two-dimensional code with the printing height. Since the printing height is added when the anti-counterfeiting two-dimensional code is printed, so that the finally printed anti-counterfeiting code is a three-dimensional anti-counterfeiting code. Since the measuring difficulty of the printing height of the generated three-dimensional anti-counterfeiting code is very high, the reproducibility of the three-dimensional anti-counterfeiting code is reduced, the anti-counterfeiting code of which the height is the same as those of the anti-counterfeiting codes of products manufactured by quality product manufacturers is difficultly printed by malicious sellers, the accuracy of distinguishing product authenticity through the height information of the anti-counterfeiting code is improved, the malicious sellers counterfeiting the quality products are distinguished through the printing height by the quality goods manufacturers, and the accountability of the malicious sellers is tracked by the quality goods manufacturers.