103 results about "Volumetric printing" patented technology

The invention discloses a lenticular printing method for a lenticule on demand through ink jet, which comprises the following steps of: A, inputting a print containing a printed lenticule image into an inkjet device; B, according to requirements on position and shape of the printed lenticule image, scanning row by row in a printed lenticule image area by using the inkjet device, jetting liquid transparent ink, and depositing the ink into lines so as to form a liquid plane; C, performing ultraviolet (UV) irradiation on the liquid plane to obtain a lenticule imaging layer L1; D, judging whetherthe thickness of the lenticule imaging layer L1 reaches the set threshold value d, if so, executing a step E, otherwise, repeatedly executing the step B and the step C; E, repeating the step B on thecured lenticule imaging layer L1 to obtain a lenticule curve layer L2; F, judging whether the thickness of the lenticule curve layerL2 reaches the set threshold value s, if so, executing a step G, otherwise, repeatedly executing the step E; and G, pressing the curve layer L2 by using a high-precision lenticule mold, and curing through UV irradiation to form the required lenticule.

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.

The invention discloses a single color printing method for a colored three-dimensional image. The method comprises the following steps of: recombining red-green-blue (RGB) three color components of a three-dimensional image to form a single color image; outputting the single color image to a printing plate; and overprinting to an RGB color plate to form a colored image which presents a distinct clear three-dimensional image under the irradiation of a backlight source, wherein the RGB color plate comprises periodically-distributed red (R), green (G) and blue (B) lines and overprinting marks. By the three-dimensional printing method provided by the invention, three-dimension obscuring and giddy feeling which are caused by inaccurate overprinting during four color printing are prevented, the independence of pixels is ensured, the vividness of colors is improved, the stereoscopic impression and the definition of pictures can be substantially improved, and the requirements of low cost and batch production of three-dimensional lamp box sheets are met simultaneously.

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.

The invention discloses a three-dimensional printing technology and a three-dimensional printed matter, and belongs to the technical field of three-dimensional printing. According to the technical scheme, the three-dimensional printing technology is characterized by comprising the following steps in sequence that (1) printed materials with printed image-text are took, and the image-text part is sprayed with fine powder in a wet state so that printing powdered products can be obtained; (2) the printing powdered products are dried at 350-550 DEG C for 10-20 min, then the printing powdered products are conducted high temperature curing at 550-650 DEG C for 5-20 min, and prefabricated matters are obtained; and (3) the prefabricated matters are cooled at the room temperature, and the three-dimensional printed matter is obtained. The three-dimensional printing technology and the three-dimensional printed matter have the beneficial effects that required devices are low in investment, simple in method, easy to operate, capable of saving labor force, capable of being not limited by the printing method and completed off-line with a printing press, capable of saving space, low in cost and suitable for large-scale promotion; and the obtained three-dimensional printed matter is good in three-dimensional effect, clear in images, high in added value and good in anti-fake capacity.

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.