Nail Printing Device Posture Confirmation via Reflector Camera
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Solution Overview
Problem
Conventional nail printing devices struggle to achieve high-grade and high-definition printing if the nail is not placed in a correct posture and position, as the inkjet method requires precise alignment to ensure proper ink deposition.
Innovation Solution
A printing device equipped with a finger stage, a carriage containing reflectors, and a camera that captures images of the nail from multiple angles to confirm the nail's posture and position, allowing for real-time adjustment and ensuring accurate ink placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a simple finger holder is used to place the finger, then the device complexity is reduced, but the manufacturing precision of nail printing deteriorates due to inability to confirm correct nail posture and position
Solution Approach 1:
The camera captures images of the nail and finger holder before the printing process begins. The processor analyzes these images to confirm the nail is in the correct posture and position, and only after confirmation does the printing unit proceed. This preliminary verification ensures printing precision is achieved before ink deposition occurs.
Solution Approach 2:
The system incorporates a feedback loop where the camera continuously monitors the nail position and posture, the processor analyzes the images and provides feedback on whether the nail is correctly positioned, and the system adjusts or proceeds accordingly. This closed-loop feedback mechanism ensures high printing precision by verifying conditions before and during the printing process.
2Measurement precision
If multiple cameras are used to capture nail images from different angles, then the measurement precision of nail posture is improved, but the device complexity increases
Solution Approach 1:
Instead of using one complex multi-angle camera system, the patent divides the imaging function into multiple simple cameras positioned at different locations. Each camera captures images from its specific angle (front, side, top), and the processor integrates these segmented views to comprehensively determine nail posture. This segmentation approach achieves high measurement precision while keeping individual camera components simple.
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 high-quality nail printing by ensuring the nail is correctly positioned and aligned, preventing ink misplacement and enhancing the printing process's precision and effectiveness.
Implementation Method 1
a carriage which has at least one reflector
Data Source
AI summary
Disclosed is a printing device including: a finger stage on which a finger corresponding to a nail is placed, the nail being a printing target; a carriage which has at least one reflector; and a camera which obtains at least an image of the nail of the finger placed on the finger stage from an upper direction and an image of the nail of the finger reflected in the reflector.