Multi-Color Materials for 3D Printing

Three-dimensional printing method to create color models without separate coloring steps. The method involves printing the model layers first, then forming pigment layers on a separate window. The pigment layers are sandwiched between the model layers and solidified. This allows coloring the model by printing pigment instead of replacing resins. The pigment layers can be cured independently. The pigment layers are scraped off and reused.

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3D printer that can print color models in a single pass without requiring multiple layer colors. The printer uses a separate coloring mechanism to spray paint onto the build platform between layers. This allows flexible color customization that isn't limited by the layer height. A curing light solidifies the paint and medium together to form a colored layer. This is repeated for each layer to create a fully colored 3D model.

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Process and method for 3D printing wooden components with layered structure and customizable color features. The method involves coating a bed with wood powder, printing a binder to form the component shape, and then printing color particles on top of the binder layer. This allows creating layered wooden components with customized color features like logos, lettering, symbols, or grain patterns. The color particles can be printed using a separate print head or added mechanically before coating.

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A 3D printed pattern structure with multiple thin ceramic color layers that can present a two-dimensional pattern in a three-dimensional manner. The structure has some areas that are hollowed out in one direction so the lower layers are visible through them. This allows different colors in the lower layers to show through the transparent upper layers. The thinness of the layers prevents issues like surface tension and difficulty coloring fine textures. The structure is made by 3D printing the multi-colored layers.

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3D printing system and method that increases throughput of 3D color printing by doubling the number of droplets dispensed per print head movement. The system uses a printing block with multiple channels, including a transparent channel, and selectively dispenses two channels at each print location based on color data. This allows printing two colors at once instead of alternating layers. It also uses two support channels during high-throughput mode. This doubles the number of droplets per movement compared to standard mode where only one support channel is used.

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Three-dimensional printing of color objects with improved mechanical properties and reduced brittleness compared to conventional color 3D printing. The method involves using specially formulated materials with optimized properties like creep resistance, impact strength, and thermal deformation temperature. The materials are combined with colorants to achieve coloration. This allows printing color objects with better mechanical performance and reduced deformation compared to conventional color 3D printing.

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Method for manufacturing 3D objects with internal color variations. The method involves dividing the 3D model into sections, then separately 3D printing each section with a different color. The printed sections are joined to form the final object with internal color contrast. This allows creating objects like teeth with a translucent exterior and darker interior, without complex color mixing during printing.

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Printing multi-colored 3D objects using fusing agents to heat and fuse colored powder-build material selectively. The additive manufacturing system deposits colored fusing agents matching subtractive colorants like magenta, yellow, and cyan. It also deposits a colorless UV-absorbing agent. The system uses monochromatic light sources to fuse colored areas selectively. A controller adjusts irradiation to compensate for different color intensities.

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Method for selecting a print head of a 3D printer for printing a 3D object with accurate colors and transparency. The method involves analyzing a 3D model to determine colorization values for each printing position based on the closest shell point color. It then converts the colorization to the printer's color space and selects a print head with the closest matching colors.

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Method to enable full-color 3D printing with additive manufacturing technologies like 3D inkjet printing. The method maps 2D color textures onto 3D objects in a way that diffuses the color transitions through the object depth, simulating subtractive mixing like in physical objects. It constructs a 3D color map assigning colors to internal voxels based on surrounding voxels and the color texture. This allows printing objects that appear colored throughout like traditionally manufactured objects rather than just on the surface.

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Color printing uses polymer-assisted photochemical deposition (PPD) to make structural color images with vivid, saturated colors using a low-cost, non-toxic additive manufacturing process. The PPD process uses UV radiation to reduce metal ions into nanoparticles that are coupled with polymers to form a nanocomposite film. When printed in Fabry-Perot cavities, these films produce bright, tunable colors across the visible spectrum. The technique enables direct printing of high-resolution, color-tunable images on a variety of substrates without cleanrooms or high temperatures.

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A process method for 3D printing colored objects using additive and subtractive color techniques to provide high-quality color printing for applications like sculptures and reliefs. The method involves converting the color model into a printable format, slicing it for 3D printing, and then using a 3D printer to print the object using an additive color process. This involves depositing layers of a primary color material. The object is then post-processed using subtractive color techniques by applying paint or dye to fill in areas that need secondary colors. This allows accurate color reproduction with high color resolution.

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A method to 3D print objects with custom colors by selectively applying a fusing agent to the build material. The method involves generating a 3D model, determining expected colors based on the fusing agent and build material, and then generating instructions to apply the fusing agent at specific levels to match the expected colors. This allows creating objects with desired colors using a white build material and black fusing agent. The fusing agent is applied at varying levels to different regions to achieve the desired colors.

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A multi-color 3D printing method using extrusion that allows printing objects with multiple colors and internal patterns. The method involves offsetting the contour of the 3D model by a small distance when slicing it for printing. This creates an unfilled area between the contour and the model that is not printed or cured. After printing, the unfilled areas are filled with a different color to create internal patterns. This allows multiple colors to be used in the same print without requiring separate print passes or post-processing. The unfilled areas also provide support for overhanging features that can be removed after curing.

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Enabling 405nm DLP 3D printers to produce objects with different colors in each layer, by adding pigments during printing. The printer automatically lifts the build platform, adds pigment to the resin tank, mixes it, and then lowers the platform to continue printing. This allows customizing the color of each layer as needed, rather than just using the intrinsic color of the resin. The pigment addition and mixing is controlled by the printer's software and hardware systems.

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Printing 3D objects with color and contours on substrates like fabric using a multi-layer printing process. The process involves printing a base color layer, then building the 3D shape and outlines using transparent structural ink, and finally printing a second color layer on top. This creates 3D colored objects by sandwching structural ink layers between color layers. The base color shows through transparent areas when viewed from some angles. This improves the appearance of 3D color printed objects compared to just using transparent structural ink.

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3D printing method to create 3D objects with colored interiors that have better color expression. The method involves dispersing white reflective material and color material in the 3D object layers instead of concentrating the white material. This prevents the white from showing on the object's cut surfaces, allowing the underlying colors to be seen. The dispersion is done by determining positions for both materials in each object voxel based on the color image data. This ensures the colors are expressed accurately throughout the object interior.

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3D printer that prints objects with multiple colors. It uses transitional lengths of build material to achieve smooth color transitions when changing colors during fabrication. These transitional lengths of build material are positioned inside the object or outside where they won't impact desired colors on the surface.

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A method for 3D printing colored objects with improved accuracy, flexibility, and quality. It involves printing and cutting each layer separately rather than printing the whole object then cutting it. This allows aligning and bonding the layers with higher precision. The method also includes making some layers partially transparent by applying a treatment that penetrates to a specific depth. This allows creating transparent parts in colored objects. The transparent treatment is controlled to maintain the white point and prevent color shifting.

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A method for manufacturing unsupported color three-dimensional solid models using curable resin or paraffin as the main material. The method involves co-extruding the curable resin or paraffin with release agents and colorful water-based pigments using multiple nozzles controlled by a computer. This allows direct deposition of colored curable resin or paraffin layers without support structures and post-processing for coloring. The co-extrusion prevents deformation during curing since the pigments and release agents are already incorporated. The viscosity of the curable resin or paraffin is in the range of 100-500,000 Pa·s.

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