UV Curing 3D Surface Printing via 2D Data Conversion
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Solution Overview
Problem
Conventional printing methods for three-dimensional surfaces are costly, complex, and struggle to achieve detailed and accurate full-color printing, making them inefficient for high-speed production.
Innovation Solution
A method involving analysis of the three-dimensional surface to convert it into two-dimensional data, followed by a primer layer formation, white color coating using UV curable ink, and subsequent color printing with UV curable inks like yellow, magenta, cyan, and black, ensuring precise positioning and accurate full-color printing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple types of bistable thermochromic material are prepared and arranged in various patterns for full-color printing, then color variety is achieved, but printing cost and process complexity increase
Solution Approach 1:
The printing process is segmented into distinct functional steps: surface analysis and 2D data conversion, primer layer formation, white color coating, and color printing. This segmentation allows each step to be optimized independently, reducing overall process complexity while maintaining full-color capability through sequential application of UV curable inks in cyan, magenta, and yellow layers
Solution Approach 2:
The invention changes the material parameter from bistable thermochromic material to UV curable ink. This parameter change enables full-color printing without requiring multiple specialized materials, thereby reducing printing cost and process complexity while achieving superior color accuracy and detail
2Adaptability or versatility
If multiple types of bistable thermochromic material are used for full-color printing, then color variety is achieved, but printing cost increases
Solution Approach 1:
The invention changes the material parameter from expensive bistable thermochromic material to cost-effective UV curable ink. This parameter change maintains full-color printing capability through the sequential application of UV curable inks in cyan, magenta, and yellow layers, thereby significantly reducing printing cost while achieving high color accuracy and detail
3Manufacturing precision
If conventional printing methods are used on three-dimensional surfaces, then printing is achieved, but printing speed is slow and detail accuracy is low
Solution Approach 1:
The invention replaces conventional mechanical printing methods with a UV curing system that uses optical energy to cure UV curable ink. This substitution enables faster printing speeds and higher detail accuracy by eliminating the need for complex mechanical positioning and heating processes, while the 3D surface analysis and 2D data conversion ensure precise rendering of three-dimensional geometries
4Manufacturing precision
If conventional printing methods are used on three-dimensional surfaces, then printing is achieved, but the process is costly and complex
Solution Approach 1:
The invention replaces complex mechanical printing systems with a simplified UV curing process. The system uses 3D surface analysis to convert the three-dimensional geometry into 2D data, then applies UV curable ink and cures it with UV light. This substitution maintains high printing accuracy for three-dimensional surfaces while dramatically reducing process complexity and cost
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
Enables fast, detailed, and highly accurate full-color printing at a low cost on three-dimensional surfaces by using UV curable inks and a jig-based positioning system that maintains aesthetic integrity, regardless of the object's shape.
Implementation Method 1
a white color coating step, which performs UV irradiation after coating white UV curable ink on the surface of the primer layer of the printing part based on the two-dimensional data, and a color printing step, which performs UV irradiation by coating UV curable ink other than white color on the surface of the printing part on which the white UV curable ink has been coated
Data Source
AI summary
A printing method includes an analysis step, which analyses the shape of the three-dimensional surface and position of the printing part of the object to be printed with the three-dimensional surface and converts into two-dimensional data, a placement step, in which at least one part of the object is placed in the placement recess of jig with the three-dimensional surface facing upwards, a primer layer formation step, which forms a primer layer on the printing part based on the two-dimensional data, a white color coating step, which performs UV irradiation after coating white UV curable ink on the surface of the primer layer based on the two-dimensional data, and a color printing step, which performs UV irradiation by coating UV curable ink other than white color on the surface of the printing part on which the white UV curable ink has been coated based on the two-dimensional data.