Nail Printing Device Camera Feedback Control

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Solution Overview

Problem

Conventional nail printing devices face challenges in maintaining a consistent distance between the print head and the nail surface, particularly when printing on gel nails or fake nails, which can lead to improper printing due to the elevated printing target surface.

Innovation Solution

A nail printing device equipped with a camera to photograph the printing target and a processor that adjusts the printing settings based on the printed image, ensuring proper alignment and preventing the print head from contacting the surface by adjusting the printing range.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the nail surface is positioned at a fixed height for printing, then the printing process is simple and fast, but the print head may contact the elevated surface when printing on gel nails or fake nails

Engineering Contradiction:

Improveprinting speedVSAvoidprinting safety

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The camera captures an image of the nail surface before printing begins. The processor analyzes this pre-captured image to detect the actual nail surface position and calculate the appropriate printing start position, preventing contact between the print head and the nail surface.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system uses feedback from the camera image to dynamically adjust the printing start position. By comparing the detected nail surface position with the predetermined printing position, the system determines the appropriate offset to maintain safe distance while ensuring complete coverage.

Inventive Principle:

Principle #23Feedback

2Reliability

If the printing start position is adjusted to avoid contact with elevated nail surfaces, then printing safety is improved, but the printing range may become incomplete

Engineering Contradiction:

Improveprinting safetyVSAvoidprinting coverage

Core Design Contradiction:

ReliabilityVSManufacturing precision

Solution Approach 1:

The system solves the contradiction by operating in the positional dimension rather than changing the physical distance. It calculates an optimized printing start position based on the detected nail surface coordinates, allowing the print head to maintain safe distance while ensuring complete coverage through intelligent position selection.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The system dynamically changes the printing start position parameter based on the detected nail surface characteristics. By adjusting this parameter according to the actual nail height and shape, the system achieves both safety (avoiding contact) and completeness (full coverage).

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS11604953B2Printing device, control method of printing device, storage medium storing control program, and printing control device

Publication Date: 2023.03.14 CASIO COMPUTER CO LTD

AI summary

Disclosed is a printing device including: a print head; a camera that photographs a printing target which is printed by the print head; and at least one processor that determines whether or not printing is properly performed to the printing target based on a printed image which is photographed by the camera, and that changes a printing setting by the print head in response to determination that the printing is not properly performed to the printing target.