Printer Thermal Head and Paper Guide Integration
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Solution Overview
Problem
Conventional printer apparatuses face challenges in size reduction due to the need for a predetermined space between the thermal head and the recording paper guide, which also increases the risk of paper damage from the integrated circuit and results in a larger apparatus size.
Innovation Solution
The thermal head, heat radiation plate, and recording paper guide are integrated into a single unit, allowing the recording paper guide to move with the thermal head, reducing the space between them and enabling a sharper inclination of the paper guide, thus minimizing the overall printer size and protecting the IC from paper contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a predetermined space is provided between the thermal head and the recording paper guide, then the thermal head is prevented from contacting the recording paper guide, but the printer apparatus size increases
Solution Approach 1:
The recording paper guide is integrated with the thermal head assembly, forming a unified structure where the guide is positioned on the thermal head. This merging eliminates the need for separate spacing mechanisms while maintaining functional separation through the integrated design, thereby reducing overall apparatus size while preventing unwanted contact.
2Reliability
If a predetermined space is provided between the thermal head and the recording paper guide, then the thermal head is prevented from contacting the recording paper guide, but the recording paper guide requires a gradual inclination which increases its size
Solution Approach 1:
By integrating the recording paper guide directly onto the thermal head assembly, the guide can be positioned at optimal angles without requiring gradual inclination. The integrated structure allows for sharper, more compact positioning of the guide while maintaining proper thermal head clearance, thus reducing the overall size and improving the compactness of the printer apparatus.
3Extent of automation
If the IC projects toward the recording paper contact side, then the IC can perform its driving function, but the recording paper may be scratched and damaged by the IC
Solution Approach 1:
The integrated recording paper guide structure acts as an intermediary between the IC and the recording paper. The guide is positioned to cover and shield the IC while still allowing the IC to function, thereby preventing direct contact between the IC and the paper that would cause scratching or damage.
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 integration reduces the printer's size while preventing paper damage by covering the IC and optimizing the paper conveying path, resulting in a more compact and efficient printer design.
Implementation Method 1
the thermal head 910 is pressed toward the platen roller 920 by a recovering force exerted from the spring
Data Source
Figure 1A~2B
Figure 3A~3B
Figure 4A~4B
AI summary
A printer apparatus includes a platen roller, a printer head for performing a printing on a recording paper provided between the printer head and the platen roller, a recording paper guide mounted to a part of a front surface of the printer head to guide the recording paper, and a spring positioned on a rear surface of the printer heat to exert force toward the platen roller. The spring causes the printer head and the recording paper guide to move together toward a position in which the platen roller is mounted.