101 results about "Volumetric printing" patented technology

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 present disclosure provides three-dimensional (3D) printing methods, apparatuses, systems and/or software to form one or more three-dimensional objects, some of which may be complex. The three-dimensional objects may be formed by three-dimensional printing using one or more methodologies. In some embodiments, the three-dimensional object may comprise an overhang portion, such as a cavity ceiling, with diminished deformation and/or auxiliary support structures.

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.

A process for forming a three-dimensional article in sequential layers in accordance with a digital model of the article. The process comprises the steps of defining a layer of a first liquid, applying a second liquid to the first liquid layer in a pattern corresponding to the digital model, and repeating these steps to form successive layers. The first liquid comprises a first active component and the second liquid includes a second active component capable of reacting with the first reactive component so that the article is built up in layers.

The invention provides a grating-based rainbow hologram chromaticity detection and evaluation method, which mainly comprises the following steps of: determining the type and optical parameters of a diffraction grating, and selecting an optical filter according to the type characteristics of the grating; preserving or shielding specular reflection light according to actual needs by adopting a diffused light source; and testing the reflectance spectrums of a sample, calculating spectral errors and metamerism indexes of a reference and the sample according to the reflectance spectrums of the tested sample, and evaluating the chromaticity information of a grating-based rainbow hologram image according to the spectral errors and the metamerism indexes. The method has the advantages of objectively reflecting the chromaticity information between the sample and the reference and accurately reflecting chromaticity errors between the sample and the reference, along with simplicity and high speed, and is popularized and utilized to effectively control the chromaticity quality of the grating-based rainbow hologram image and promote laser holographic anti-counterfeiting, three-dimensional printing and control over the quality of grating-based high-end products.

The invention provides three-dimensional printing equipment which comprises an image-text printing device and a raster graphic printing device, wherein the image-text printing device is used for printing a multigrid image onto a printing material; and the raster graphic printing device is positioned at the down stream of the image-text printing device, and transparent ink is used to directly print raster graphics onto the multigrid image of the printing material. The invention further provides a three-dimensional printing method which comprises the following steps that the multigrid image is printed onto the printing material through the image-text printing device; and the transparent ink is used to directly print the raster graphics onto the multigrid image through the raster graphic printing device. The invention also provides a packaging box with a three-dimensional image, and the three-dimensional image is printed through the three-dimensional printing method. Accordingly, the invention not only can save materials, but also is environmental-friendly, has high production efficiency and a wide application scope.

This invention describes a method of stereoscopic printing and its application in decorative plate and light box. The stereoscopic printing method includes a substrate with concave and convex surface micro structures followed by printing with electron beam or UV light curable ink to retain the surface morphology after printing. The printing resolution is between 5 and 20 times the density of concave and convex surface structure to create the decorative plate with visual depth perception. If the micro structured substrate is transparent, a high contrast image on a decorative plate or a light box can be obtained by integration of a reflective film or a back light unit.

The invention provides a heating head for a three-dimensional printing pen. The heating head includes a heating pipe, a heating member, a heat insulation pipe, a heat insulation sleeve, and a heat sink. The heating member is disposed on the heating pipe. The heat insulation pipe penetrates into the heating pipe. The heat insulation sleeve is sleeved on the heating pipe and opposite to the heating member. The heat insulation sleeve partly covers the heat insulation pipe, and the heat insulation pipe and the heat insulation sleeve are separated by the heating pipe. The heat sink and the heat insulation sleeve mutually lean against, wherein the heat insulation sleeve is located between the heating member and the heat sink, and the heat insulation pipe penetrates into the heat sink.

Disclosed herein is a plane lens sheet using a light transmission rate difference, which is used for stereoscopic printing for a lenticular system and an integral photography method and has a plane surface while innumerable lenses are arranged on the surface there so that it looks like a flat transparent sheet, improves the quality of stereoscopic products employing the lens sheet and facilitates the maintenance of the stereoscopic products. The plane lens sheet includes: a concave lens layer 20 and a convex lens layer 30 laminated on each other in such a manner as the adhere to each other with the same radius curvature to form a superposed lens sheet, the concave lens layer 20 and the convex lens layer 30 being made of a transparent synthetic resin and having the same lens pitch and different light transmission rates; a thin flat transparent upper protection layer 10 formed on the concave lens layer 20; a transparent layer 50 formed below the convex lens layer 30 for forming the focal length of the laminated concave lens layer and convex lens layer; and a thin flat transparent lower protection layer 70 formed below the transparent layer 50.

The present invention relates to a cigarette packet whose surface pattern and character have stereoscopic vision effect and its production method. It is made up by printing pattern and characters on 150I pi-200I pi line grating material, and its production method includes the following steps: (1) selecting pattern and characters; (2) using special software to treat the pattern and characters; (3). making printing file; (4) setting type; (5). colour-separating, screen-placing and making plate; (6). printing; and (7). die-cutting.

The present invention discloses an illumination system (30), comprising: - a plurality of light-emitting diodes (LEDs) (34), each LED having at least a first, light-emitting surface (36) and a second surface (37), at least one of the first and the second surface being substantially flat; - a plurality of electrical pathways (56), selectively connected to the respective LEDs, such that each LED can be individually controlled; and -a levelling surface (46, 52), wherein the levelling surface is substantially flat and in levelling contact with the at least one substantially flat surface (37, 36) of each LED, such that a two-dimensional array of LEDs extends in a plane parallel to the levelling surface.

The invention discloses a printing technique for showing a three-dimensional visual effect, and relates to a printing technique for directly showing the three-dimensional visual effect of patterns and characters. The printing technique needs to solve the following two problems: (1) eliminating the deformation of dot-like gratings formed by hot-pressing in order to decrease the reject rate and increase the production benefit; (2) reducing the application cost of three-dimensional printing. In order to solve the technical problems, the printing technique is implemented by the following technical scheme: the printing technique for showing the three-dimensional visual effect first prints synthesized three-dimensional patterns and characters on a printing stock (1), transparent varnish is coated on the surfaces of the patterns and the characters, and is pressed by a dot-like grating die matched with the patterns and the characters, so that an equidistant dot-like grating (2) is formed on the transparent material, and thereby the patterns and the characters show the three-dimensional visual effect. The printing technique is mainly applied to product packages, books, periodicals, advertisement and the like directly showing the three-dimensional visual effect of the patterns and characters.

The invention relates to the technical field of optical film production, and particularly discloses a optical roller assembly with local optical effect patterns and a method for manufacturing a local optical sheet and a three-dimensional printed pattern product. The optical roller assembly comprises a roller, and the surface of the roller is wrapped by or sleeved with a template or a sleeve with the local optical effect patterns. The local optical effect patterns include one or more of a column-shaped or dot grating pattern, a micro optical lens pressed pattern and a laser pressed pattern. Transverse gratings and longitudinal gratings in the column-shaped grating pattern are distributed in the same area or different areas. After the roller is bonded by means of the template or the sleeve with the optical effect patterns, the local optical effect patterns can be pressed on transparent sheets, and then patterns are positioned and printed on the local effect patterns to obtain exquisite products with high visuality. The optical roller assembly and the manufacturing method have the advantages that cost is low, efficiency is high and the method is easy and convenient to complement.

The invention discloses a method for carrying out three-dimensional printing by utilizing a round-dot optical grating. According to the technical scheme adopted by the invention, the key point of the method comprises the following steps: drawing a printed pattern by virtue of graphics software and platemaking, and offset-printing a colorful pattern and a local space pattern on the back surface of a film; and offset-printing UV base oil on the front surface of the film, and gravure-printing UV face oil through a gravure-printing roller, and the like. According to the invention, the printing method capable of realizing local three-dimensional printing effect does not need an optical grating plate, only needs a common transparent film, limitation on thickness and dimension of the transparent film is avoided, and 3D effect can be formed after printing, so that the cost is low, the operation is simple, and the flexibility is high. Common pre-printing process software is not needed to be used, additional investment is not needed, the popularization is easy, and the graphic processing is very simple.

The invention relates to a printing technology and discloses a magnetic three-dimensional printing technology. The magnetic three-dimensional printing technology mainly comprises the following steps that S1, water-based polishing oil is evenly printed on a printed material to form a water-based polishing oil layer; S2, water-based color ink is evenly printed on the water-based polishing oil layerto form a water-based color ink layer; S3, after the water-based color ink is dried, water-based magnetic ink is evenly printed on the water-based color ink layer, and the printed material is printed;and S4, a magnetic mold is positioned on the upper portion of the printed material in a suspended mode, thus iron-containing magnetic matter in the water-based magnetic ink is attracted by magnetic force of the magnetic mold to move, and finally, a three-dimensional pattern is formed. According to the magnetic three-dimensional printing technology, the three-dimensional pattern can be printed; and the defect that ink is prone to volatilization in the prior art can further be overcome, and thus generation of volatile organic compounds (VOC) is avoided.

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.

The invention discloses a simulation plate manufacturing technology taking natural material as a base material and a synchronous stereoscopic printing technology for surface texture and color. The manufacturing technology comprises the following steps of: making a silica gel mould by taking the natural material as a mould seed; rolling and forming slurry on a plate forming machine before curing to obtain a plate with stereoscopic material texture on the surface; and performing stereoscopic printing on the surface texture and color: taking the color and texture of the natural material mould seed on a large scanner, then editing and processing the taken pattern on a computer, and placing the plate on a large digital spray painting device for spray painting to obtain a plate consistent with the natural material in shape, texture and color. According to the invention, the product has the advantages that: the shape and texture of a real object can be completely and vividly copied by use of a silica gel template; natural color and texture are obtained; the plate surface has an elegant and complete effect as well as strong simulation; and as inorganic composite material is adopted, the manufacturing cost is low, and the simulation plate is easy to popularize.

The invention relates to a three-dimensional printing method and a decorative plate and a lamp box manufactured through the method. The three-dimensional printing method includes the steps that printing is carried out on a sheet material with a concave-convex surface by means of printing ink capable of being hardened through ultraviolet rays or electron beams, so that the concave-convex appearance of the surface of the sheet after printing is maintained, the printing resolution is 5 times to 20 times of concave-convex density, and the decorative plate with a visual three-dimensional field depth effect is generated. When the sheet material with the concave-convex surface is a transparent lens material, the high-contrast decorative plate or the lamp box can be formed due to the combination of the transparent lens material and a reflective sheet material or a backlight source.

A three-dimension (3-D) printing method and a 3-D printing system are provided. The method includes: generating printing information according to model information of a 3-D object; controlling a 3-D printing apparatus to perform a 3-D printing operation, so as to print a supporting object and the 3-D object, wherein the supporting object is used to support the 3-D object. Furthermore, the step of generating the printing information includes: detecting a floating contour of the 3-D object on the first printing layer according to the model information; and removing printing information of the supporting object from printing information corresponding to a second printing layer according to the floating contour. Thereby, difficulty of removing the supporting object can be reduced.

The invention provides a naked-eye three-dimensional printing product and a manufacturing method thereof and belongs to the three-dimensional printing technical field. The naked-eye three-dimensional printing product comprises a transparent sheet; the front surface of the transparent sheet is provided with a microlens array layer; the back surface of the transparent sheet is provided with a micro graphic-text set array layer and a macro pattern layer; the back layer of the macro pattern layer is provided with a protective layer; the microlens array layer comprises a plurality of arrayed segment-shaped microlenses; the micro graphic-text set array layer includes a plurality of arrayed micro graphic-text sets; the microlens array and the micro graphic-text set array are both a rectangular array; an included angle of the extension line of each row of graphic-text sets in the micro graphic-text set array layer and the length direction of the micro graphic-text set array layer is 45 degrees; and an included angle of the extension line of each row of microlenses in the microlens array layer and the length direction of the microlens array ranges from 0 degree to 10 degrees. The naked-eye three-dimensional printing product is used for providing a naked-eye visibly three-dimensional image.