Paper-Based 3D Printing Device Inkjet Coloring Cutting Seam
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Solution Overview
Problem
Existing paper-based 3D printing technologies result in uncolored portions on the outer surface of models and inefficient ink usage due to layer-by-layer coloring and bonding processes, leading to slow printing speeds and reduced color reproduction quality.
Innovation Solution
A paper-based 3D printing device equipped with a three-axis linkage platform and an inkjet head that cuts paper sheets along a model contour and ejects ink directly onto the cutting seam, improving color uniformity and efficiency by eliminating the need for layer-by-layer printing and ink wastage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If layer-by-layer coloring is performed with inkjet printing, then color reproduction is achieved, but ink penetration is incomplete and outer surface remains uncolored
Solution Approach 1:
The patent applies preliminary action by pre-cutting paper sheets along the model contour before assembly. This creates predefined cutting seams that guide subsequent inkjet coloring, ensuring ink is applied precisely where needed for visible color reproduction rather than attempting to color entire layers that will be assembled internally.
Solution Approach 2:
The patent extracts the coloring function from the layer-by-layer printing process and applies it selectively to cutting seams after assembly. Instead of attempting to color entire paper layers that end up inside the model, only the external cutting seams are colored, eliminating the problem of incomplete penetration while achieving complete visible color coverage.
2Manufacturing precision
If layer-by-layer cutting and bonding is performed, then 3D model formation is achieved, but printing speed becomes extremely slow
Solution Approach 1:
The patent applies preliminary action by pre-cutting all paper sheets along the model contour before assembly. This allows parallel processing of multiple layers simultaneously rather than sequential layer-by-layer cutting, significantly improving printing speed while maintaining precise model formation through the predefined cutting patterns.
Solution Approach 2:
The patent segments the 3D model construction into independent pre-cut paper layers with standardized cutting seams. Each layer can be prepared independently and assembled efficiently, transforming the slow sequential layer-by-layer process into a faster parallel processing workflow where multiple layers are cut and prepared simultaneously.
3Manufacturing precision
If ink is printed on paper surface for layer-by-layer coloring, then color application is achieved, but ink is wasted as it cannot be displayed
Solution Approach 1:
The patent extracts the coloring function from internal layer surfaces and applies it exclusively to external cutting seams after assembly. This eliminates wasted ink on internal surfaces that cannot be displayed, while achieving complete visible color coverage on the model's exterior through precise inkjet application on the cutting seams.
Solution Approach 2:
The patent applies local quality by concentrating inkjet coloring only on the external cutting seams where color visibility is required, rather than applying ink uniformly across entire paper layers. This localized approach ensures every unit of ink contributes to visible color reproduction, eliminating waste on internal surfaces.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enhances color reproduction on the model's outer surface, reduces ink wastage, and significantly increases printing speed and efficiency by directly coloring the cutting seam, resulting in a uniformly colored and faster production of 3D models.
Implementation Method 1
drive the inkjet head to eject ink toward the cutting seam along the contour of the predetermined model to color
Data Source
AI summary
The present invention relates to a paper-based 3D printing device and a printing method. The paper-based 3D printing device comprises a printing platform, a three-axis linkage platform, a cutting head and an inkjet head. The printing platform is used for placing paper, and the three-axis linkage platform is arranged to, firstly, drive the cutting head to cut the corresponding paper along the contour of a preset model to form a cutting seam, and then drive the inkjet head to inkjet color toward the cutting seam along the contour of the preset model. The paper-based 3D printing device and the printing method save ink, and can directly spray the ink at the cutting seam, which is equivalent to coloring the outer surface of the model, effectively improving the coloring effect, making the coloring of the outer surface of the model uniform, eliminating the step of printing one by one.