Color 3D Printing Slices That Separate Surface and Background Colors
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Solution Overview
Problem
Existing 3D printing technologies struggle to distinguish between background and surface colors in full-color models, leading to issues of not printing or misprinting when slice layers have the same color as the background.
Innovation Solution
A color 3D printing method that separates structural data for the inner and outer models, using distinct image information formats to differentiate between background and surface colors, and includes supporting structures to prevent misprinting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If color information is used to identify slice layers for printing, then color representation is improved, but the system cannot distinguish between background and surface colors leading to misprinting
Solution Approach 1:
The patent segments the 3D model into inner model and outer model components. The outer model contains color information for surface rendering, while the inner model contains structural information. This segmentation allows the system to process and distinguish between background and surface colors separately, preventing misprinting while maintaining accurate color representation.
Solution Approach 2:
The patent introduces an intermediary processing layer that separates structural data from color data. By using distinct data structures for inner model (structural) and outer model (color), the system creates an intermediary representation that resolves the conflict between color representation and printing accuracy, allowing reliable distinction between background and surface areas.
2Loss of information
If color data is integrated with structural data, then color information is preserved, but background and surface colors cannot be distinguished
Solution Approach 1:
The patent divides the integrated data into separate segments: structural data for the inner model and color data for the outer model. This segmentation preserves all color information while enabling precise distinction between background and surface colors through separate processing channels, eliminating the confusion that arises from integrated data representation.
Solution Approach 2:
The patent applies local quality by assigning different data characteristics to different parts of the model. The outer model receives full color data treatment while the inner model receives structural-only treatment. This localized differentiation allows the system to maintain color information preservation where needed while achieving color distinction accuracy in the surface rendering areas.
Data Source
AI summary
A color 3D printing method, a printing apparatus and a terminal device. The printing method includes acquiring an original three-dimensional model of an object to be printed; performing shell processing to the original three-dimensional model to generate an inner model and an outer model of the original three-dimensional model; performing slicing processing to the inner model and the outer model to generate multiple printing data corresponding one-to-one with each printing layer, the printing data including structural data representing the inner model in a printing layer, color data representing the outer model in the printing layer, and structural data representing the outer model in the printing layer; printing the object to be printed according to the printing data. The present method can distinguish between a background color and a surface color of the original three-dimensional model in a slice image, avoiding phenomena of not printing or misprinting.