3D Shaping Color Conversion Using Adaptive Profiles
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Solution Overview
Problem
Conventional 3D printing methods struggle to accurately represent a wide range of colors for colored 3D objects, as thick coloring regions reduce the gamut of colors that can be represented, making it difficult to achieve desired colors, especially when the objects are observed from different directions.
Innovation Solution
A shaping method that uses multiple profiles for color conversion, where the thickness of the coloring region varies depending on the position, allowing for appropriate representation of colors by using different profiles corresponding to the specific thickness of the coloring region, and converting colors from the Lab value to the CMYK color coordinate system using device profiles tailored for the shaping material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the coloring region is thickened to ensure color stability from different directions and against cracks/chips, then the durability and color consistency are improved, but the gamut of colors that can be represented becomes smaller
Solution Approach 1:
The patent applies local quality by differentiating the thickness of the coloring region based on its position within the 3D object. The coloring region thickness setting unit sets different thicknesses for different positions, allowing areas requiring higher durability to have thicker coloring regions while areas requiring wider color gamut have thinner coloring regions. This resolves the contradiction by making the coloring region adaptive to local requirements rather than uniformly thick throughout the object.
Solution Approach 2:
The patent changes the parameter of coloring region thickness dynamically based on position. By adjusting the thickness parameter locally across different regions of the 3D object, the system optimizes both color stability (where thicker regions provide durability) and color representation accuracy (where thinner regions preserve gamut). This parameter variation resolves the technical contradiction between reliability and manufacturing precision.
2Ease of manufacture
If a single profile is used for color conversion, then the process is simple, but the desired color cannot be appropriately represented across different positions with varying coloring region thickness
Solution Approach 1:
The patent applies local quality by selecting different device profiles for different positions on the 3D object based on the local coloring region thickness. The coloring region thickness setting unit determines the thickness at each position, and the color conversion unit selects appropriate profiles from multiple available profiles to match those local thickness characteristics. This ensures that each position uses the most suitable profile for its specific geometry, achieving accurate color representation across the entire object while maintaining a systematic approach to profile selection.
Solution Approach 2:
The patent introduces dynamics by making the profile selection adaptive to the local conditions (coloring region thickness) at each position. Rather than using a static single profile for the entire object, the system dynamically selects from multiple profiles based on the local thickness requirements. This dynamic adaptation enables accurate color representation across varying geometries while keeping the process manageable through automated profile selection based on thickness measurements.
Data Source
AI summary
The shaping method for shaping a 3D object includes shaping execution data generating step of generating shaping execution data indicating the 3D object in a format corresponding to a shaping device; and shaping executing step of shaping the 3D object with the shaping device based on the shaping execution data, the 3D object being shaped using at least a shaping material of plural colors, wherein the shaping execution data generating step is a step of generating the shaping executing data based on 3D object data indicating the 3D object in which at least one part is colored, the shaping execution data being generated by at least carrying out color conversion using a shaping material profile or a profile corresponding to the shaping material of plural colors, and the color conversion being carried out using the plurality of shaping material profiles different from each other.