Mobile Printer Layout for Stable Non-Contact Power Reception
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Solution Overview
Problem
Existing mobile printers face challenges in efficiently supplying power while maintaining portability and reducing interference from static electricity and magnetic fields, which can affect printing accuracy and stability.
Innovation Solution
A mobile printer design incorporating a power supply unit with a power receiving module for non-contact power reception and a static electricity removal film positioned between the roll body accommodating portion and the power receiving module, enhancing power reception efficiency and operational stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If non-contact power supply is implemented in mobile printer, then power supply convenience is improved, but static electricity interference affects power receiving stability
Solution Approach 1:
A ground wire is introduced as an intermediary element between the power receiving coil and the housing. The ground wire provides a reference potential and discharge path for static electricity, mediating the interaction between the non-contact power supply system and the static electricity generated during paper transport, thereby improving power receiving stability while maintaining wireless power supply convenience
Solution Approach 2:
The harmful static electricity is extracted and directed to the housing through the ground wire connection. By separating the static electricity discharge path from the power receiving circuit, the interference is removed from the sensitive power receiving module, allowing stable wireless power supply operation
2Productivity
If recording paper is transported through the printer, then printing function is enabled, but static electricity is generated and interferes with power receiving
Solution Approach 1:
The ground wire acts as a mediator that provides a controlled path for static electricity generated during paper transport. By connecting the power receiving module to ground through this intermediary, static electricity is safely discharged to the housing without interfering with the printing operation or power receiving process
Solution Approach 2:
The static electricity generated during necessary paper transport is converted from a harmful interference into a manageable electrical phenomenon. By providing a ground wire discharge path, the static electricity is directed to flow safely through the housing, transforming the harmful effect into a controlled electrical discharge that does not disrupt printing or power receiving
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
The solution improves power receiving efficiency and operational stability by reducing static electricity interference and maintaining portability, ensuring reliable power supply and printing quality.
Implementation Method 1
the power supply unit has a power receiving module receiving a signal based on a power supply voltage signal from an outside by a non-contact power supply
Implementation Method 2
at least a part of the static electricity removal film is located between the roll body accommodating portion and the power receiving module
Data Source
AI summary
A mobile printer includes a roll body accommodating portion accommodating a roll body on which recording paper is wound, a print head performing printing on the recording paper, a transport unit pulling out the recording paper from the roll body and transporting the recording paper, a power supply unit supplying a drive voltage signal to the print head and the transport unit, a housing covering the roll body accommodating portion, the print head, the transport unit, and the power supply unit, and a static electricity removal film, in which the power supply unit has a power receiving module receiving a signal based on a power supply voltage signal from an outside by a non-contact power supply, and at least a part of the static electricity removal film is located between the roll body accommodating portion and the power receiving module and adjacent to the power receiving module.