Movable Laser Detection for Nail Printing Alignment
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Solution Overview
Problem
Existing nail printing apparatuses face challenges in accurately detecting the height position of nails due to variations in shape and size among individuals, leading to potential issues with print quality, as fixedly arranged laser sensors struggle to adapt to different nail positions.
Innovation Solution
A printing apparatus with a movable detection unit and placement unit that allows for noncontact detection of the nail's height position, enabling the adjustment of relative positions to ensure proper alignment for printing, using a laser portion that can move in the Y direction to detect the nail's position accurately.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixedly arranged laser sensor is used to detect nail height, then the device structure is simple, but the detection precision deteriorates due to variations in nail shapes and positions among individuals
Solution Approach 1:
The patent makes the detection unit movable in the Y direction instead of fixed, allowing dynamic adjustment of the detection position to match varying nail positions among different individuals and fingers, thereby resolving the contradiction between simple structure and precise detection
Solution Approach 2:
The movable detection unit can detect nails at various positions, making the device universally applicable to different individuals and finger types, achieving both structural simplicity and detection precision through a single adaptable component
2Measurement precision
If the relative positions of the placement unit and detection unit are adjusted to detect nails at varying heights, then the detection precision is improved, but the device complexity increases
Solution Approach 1:
The patent implements a movable detection unit that can be positioned at different locations, providing the necessary flexibility to detect nails at varying heights while maintaining a relatively simple overall device structure through controlled movement rather than multiple fixed components
3Device complexity
If a fixed detection position is used, then the device structure is simple, but the adaptability to different nail positions deteriorates
Solution Approach 1:
The movable detection unit enables the device to adapt to different nail positions by changing its location in the Y direction, achieving high versatility without requiring a complex multi-component system
Solution Approach 2:
The single movable detection unit serves multiple detection positions and various finger types, providing universal adaptability across different users and nail configurations
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
This solution allows for precise detection and adjustment of nail positions, improving print quality by ensuring the nail is aligned correctly for printing, regardless of variations in shape or size, and prevents damage by using noncontact laser detection.
Implementation Method 1
a laser portion (206) forming an optical axis (2062) in a direction intersecting the X direction and the Y direction
Implementation Method 2
detecting a position of the nail portion (3032) in a Z direction intersecting the X direction and the Y direction, in a noncontact manner
Data Source
AI summary
A printing apparatus includes a printing unit to eject a liquid to an object to be printed in a first direction to perform printing, a placement unit on which the object is placed, and a detection unit capable of detecting a position of the object in the first direction in a noncontact manner. A control unit performs a first detection which changes relative positions of the placement unit and the detection unit in the first direction and on a plane intersecting the first direction before the printing on the object to detect, by the detection unit, the object placed on the placement unit, and the control unit performs a second detection which changes the relative positions of the placement unit and the detection unit on the plane during the printing on the object to detect, by the detection unit, the object placed on the placement unit.