3D Printing Color Density Compensation for Thickness Control
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Solution Overview
Problem
Current printing technologies face challenges in achieving precise control over the thickness of color and structural layers on three-dimensional objects, particularly on substrates like fabric and footwear, which affects the surface profile and perceived color intensity.
Innovation Solution
A method and system that determine a target thickness for regions of a three-dimensional object, assign color densities based on perceived color intensity, and print color and structural layers with specific thicknesses to achieve a desired surface profile, using a print controller and device that transmit and execute precise print instructions for each pixel or region.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If color material is deposited to achieve desired color intensity, then color density is improved, but layer thickness becomes difficult to control precisely
Solution Approach 1:
The patent divides the printing process into two distinct stages: first depositing a colorless structural layer to establish the desired thickness and surface profile, then depositing color material on top. This segmentation allows independent control of thickness (structural layer) and color intensity (color layer), resolving the contradiction between precise thickness control and color density achievement
Solution Approach 2:
The patent introduces a colorless structural layer as an intermediary between the substrate and the color material. This intermediate layer serves as a thickness-controlled foundation that does not interfere with color deposition, enabling precise thickness control while maintaining color intensity independence
2Manufacturing precision
If structural layer thickness is increased to achieve target thickness, then surface profile control is improved, but color intensity may be affected
Solution Approach 1:
By separating the structural layer (colorless) from the color layer, the patent enables independent optimization: the structural layer thickness is controlled to achieve the desired surface profile and target thickness, while the color layer is deposited separately to ensure consistent color intensity without being affected by variations in structural layer thickness
Solution Approach 2:
The patent applies different material properties to different layers: the structural layer provides mechanical thickness and surface profile control, while the color layer provides optical properties. This local differentiation of material functions allows each layer to perform its specific role without interfering with the other's performance
3Ease of manufacture
If printing is performed directly on three-dimensional substrates, then manufacturing complexity is reduced, but thickness and surface profile control deteriorate
Solution Approach 1:
The patent performs preliminary action by first depositing the colorless structural layer to establish the desired thickness and surface profile before depositing the color material. This preliminary structural preparation ensures that subsequent color deposition occurs on a controlled foundation, maintaining precision even when printing directly on three-dimensional substrates
Data Source
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AI summary
Methods and systems are provided for printing a three-dimensional object. For example, a method includes determining a target thickness for a region of the three-dimensional object. A color for the region is determined. The color is assigned a color density. A color thickness for the color is determined based on the color density. The target thickness is independent from the color thickness. A color layer having the color thickness in the region is printed. A structural thickness for a structural layer of the region is determined based on the color thickness and the target thickness. The structural layer having the structural thickness is printed directly onto the color layer. A combination of the color layer and the structural layer has the target thickness.