Nail Printing Device Contour Adjustment via Touch Interface
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Solution Overview
Problem
Existing nail printing devices struggle to accurately recognize and adjust nail contours, especially when cuticles are not cared for or nail borders are uneven, leading to difficulties in manual adjustment and increased user burden, particularly when using a dominant hand.
Innovation Solution
A nail printing device with a first nail contour recognizing section, display section, recognition result adjusting section, and print control section that allows for easy adjustment of recognized nail contours through photographing, displaying, and refining the nail image, enabling users to specify adjustments via touch input, facilitating accurate printing without manual dexterity challenges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If automatic nail contour recognition is used, then productivity is improved, but measurement precision deteriorates when cuticles are not cared for or nail borders are uneven
Solution Approach 1:
The patent introduces a display section as an intermediary between the automatic recognition system and the user. The recognized nail contour is displayed on the screen, allowing users to visually verify and manually adjust the contour by touching the display. This intermediary interface resolves the contradiction by enabling quick automatic recognition while providing an easy adjustment mechanism when precision is compromised due to poor cuticle condition or uneven nail borders.
2Measurement precision
If manual adjustment of nail contour is allowed, then measurement precision is improved, but ease of operation deteriorates due to heavy user burden and difficulty for dominant hand users
Solution Approach 1:
The patent replaces the traditional mechanical joystick-based adjustment system with a touch-based display interface. Users can directly touch the displayed nail contour image to adjust the contour, eliminating the need for complex joystick operations. This substitution dramatically improves ease of operation, especially for dominant hand users, while maintaining high measurement precision through direct visual feedback and intuitive touch interaction.
3Measurement precision
If finger is kept in device during adjustment, then measurement precision is maintained, but ease of operation deteriorates as user cannot freely use both hands
Solution Approach 1:
The patent creates a visual copy of the nail contour on the display screen, which can be adjusted without the finger being physically present in the device. The displayed image serves as a digital replica that users can manipulate with both hands freely. This copying approach maintains measurement precision by preserving the nail's positional information while completely resolving the operational constraint, allowing users to adjust the contour with full hand mobility.
Data Source
AI summary
A nail printing device recognizes, as a first nail contour, a nail contour from a first nail image obtained by photographing a nail of a specific finger/toe, displays the first nail contour on the basis of data of the first nail contour stored in a storage section, and performs an adjustment of the first nail contour on the basis of an adjustment portion specified to the first nail contour and obtains an adjusted nail contour. After that the device recognizes, as a second nail contour, a nail contour from a second nail image obtained by photographing the nail of the specific finger/toe, reflects the adjustment performed to the first nail contour, in the second nail contour, obtains an adjusted recognized nail contour, and controls a print head to perform printing in a region of the adjusted recognized nail contour.