Printing Media Cassette Lever Mechanism for Reduced Opening Force
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Solution Overview
Problem
The existing image forming apparatuses require excessive force to open the printing media cassette, which can lead to damage or injury and negatively impacts user experience.
Innovation Solution
An improved image forming apparatus design featuring a movable lever system with elastic members and guide slots that facilitates easy opening and closing of the printing media cassette, reducing the force required by the user.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the printing media cassette is designed with a simple mounting structure, then the device complexity is reduced, but excessive force is required to open the cassette
Solution Approach 1:
The lever is designed to move between different positions (engaged and disengaged) to dynamically change the mechanical interaction between the cassette and the apparatus body. When engaged, it provides closing force; when disengaged, it allows easy opening without excessive force
Solution Approach 2:
The lever acts as an intermediary mechanical element between the user's opening action and the cassette. It mediates the force application by providing a fulcrum point and lever arm, allowing small user force to generate sufficient opening force without requiring the user to directly pull the cassette with excessive force
2Strength
If the lever applies strong closing force to the printing media cassette, then the cassette closes securely, but excessive force is required to open the cassette
Solution Approach 1:
The lever transitions from a static strong-closing design to a dynamic system where the lever can be positioned in either an engaged state (providing closing force) or a disengaged state (allowing easy opening). This dynamic positioning resolves the contradiction by separating the closing function from the opening resistance
Solution Approach 2:
The lever is designed to automatically disengage or be easily disengaged before the user applies opening force, preventing the closing force from opposing the opening action. This preliminary anti-action ensures that the strong closing force does not create excessive opening resistance
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 design allows users to easily open and close the printing media cassette, enhancing user convenience and product quality by minimizing the force needed, thus preventing potential damage or injury.
Implementation Method 1
an elastic member disposed between the apparatus body and the lever to elastically bias the lever
Data Source
AI summary
Disclosed herein is an image forming apparatus having a structure improved such that a user easily opens and closes a printing media cassette. The image forming apparatus includes an apparatus body, a printing media cassette to receive printing media, the printing media cassette being movably coupled to the apparatus body, and at least one lever movably disposed in the apparatus body, the lever contacting the printing media cassette to pull the printing media cassette into the apparatus body and then being separated from the printing media cassette when the printing media cassette is closed.