Dual-Tool Drawing Apparatus for Nail Surface Finish Quality
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Solution Overview
Problem
Conventional drawing apparatuses for nail designs often result in unpainted areas due to ink application issues with pen tips, leading to variations in finish quality, especially when ink jet printing is performed on surfaces with incomplete base layers.
Innovation Solution
A drawing apparatus with a dual-tool system, where a first drawing tool is used initially and replaced by a second tool when an undrawn area is detected, ensuring complete coverage and maintaining finish quality by using a spare tool to address application failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a single drawing tool is used to apply base layer ink to the nail, then the device complexity is low, but unpainted areas occur leading to poor finish quality
Solution Approach 1:
The patent applies local quality by having different drawing tools (pen and ink jet head) available for different regions of the nail. The system detects unpainted areas and selectively applies ink using the appropriate tool type for that specific region, ensuring high finish quality without requiring all tools to be used uniformly across the entire nail surface.
Solution Approach 2:
The patent implements dynamics by making the drawing tool selection dynamic rather than static. The system automatically switches between pen and ink jet head based on real-time detection of painting status and nail surface conditions, allowing the device to adapt its configuration during the drawing process to maintain high finish quality.
2Reliability
If a pen is used to apply base layer ink, then high-viscosity inks can be used with excellent color development, but unpainted areas may occur due to pen tip condition or nail surface condition
Solution Approach 1:
The patent applies feedback by using a sensor to detect the painting status of the nail surface in real-time. This feedback information is used to determine whether unpainted areas exist and to select the appropriate drawing tool, creating a closed-loop control system that ensures complete coverage and high finish quality.
Solution Approach 2:
The patent implements parameter changes by switching between different drawing tools with different operational characteristics. The pen is used for its ability to handle high-viscosity inks with excellent color development, while the ink jet head is used when complete coverage is difficult to achieve with the pen, changing the operational parameters based on detected conditions.
3Productivity
If ink jet printing is performed on portions with incomplete base layer, then productivity is maintained, but variations in spreading and coloration occur leading to poor finish quality
Solution Approach 1:
The patent applies preliminary action by detecting and identifying unpainted areas before performing ink jet printing. This preliminary detection allows the system to take corrective action (using the pen or re-applying base layer) before the final design printing, preventing quality variations while maintaining overall productivity.
Data Source
AI summary
A drawing apparatus including a drawing unit that detachably holds a drawing tool that performs a drawing on an object and a drawing tool standby unit for causing at least one spare drawing tool to stand by.In a state where a first drawing tool is caused to be held in the drawing unit and a second drawing tool is caused to be held in the drawing tool standby unit, the drawing unit is controlled to perform a drawing within a first region of the object by using the first drawing tool and, when a first undrawn area occurred within the first region, the first undrawn area being an area where the first drawing tool was not performed correctly, the first drawing tool held is caused to be replaced with the second drawing tool; and the drawing unit is caused to perform a drawing in the undrawn area by using the second drawing tool.