Automatic Cassette Mounting Apparatus with Rail Locking Mechanism
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Solution Overview
Problem
Existing image forming apparatuses face challenges in efficiently and cost-effectively mounting and demounting cassettes, often requiring additional components like dampers to reduce noise and impact, which increase manufacturing costs and user effort.
Innovation Solution
An automatic mounting apparatus with a rail assembly and locking device that utilizes a height difference in the rail and elastic members to guide and lock the cassette, eliminating the need for dampers and simplifying the mounting process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a rigid cassette mounting device is used to withstand the weight of the cassette and print medium, then the structural strength is improved, but the device complexity and manufacturing cost increase due to additional dampers
Solution Approach 1:
The patent removes the damper component from the cassette mounting device, extracting the noise-reduction function separately. The mounting device itself is designed to be rigid for strength but operates without the additional damper complexity, resolving the contradiction between structural strength and device complexity
Solution Approach 2:
The cassette mounting device is designed to automatically absorb and manage the impact and noise generated during cassette insertion through its inherent rigid structure, eliminating the need for separate damper components. The system serves its own noise-reduction needs through its basic design
2Object-affected harmful factors
If a damper is added to prevent impact and noise during cassette insertion, then the harmful factors are reduced, but the manufacturing cost and device complexity increase
Solution Approach 1:
The patent separates the noise and impact reduction function from the main mounting structure by not integrating a damper, thereby simplifying manufacturing. The mounting device focuses solely on its primary function of supporting and guiding the cassette, reducing manufacturing complexity and cost
Solution Approach 2:
The rigid mounting device inherently manages impact and noise through its structural design and the natural damping properties of its materials, eliminating the need for additional specialized components and reducing manufacturing costs
3Object-affected harmful factors
If additional dampers are installed to reduce noise and impact, then the harmful factors are reduced, but the ease of operation deteriorates due to increased user effort
Solution Approach 1:
The mounting device automatically handles impact and noise reduction through its rigid structure during cassette insertion, requiring no additional user effort or interaction. The system self-manages the harmful factors while maintaining ease of operation
Solution Approach 2:
Instead of adding soft dampening components that would require more force to compress, the patent uses a rigid structure that naturally manages impact through its stiffness, inverting the conventional approach and maintaining ease of operation
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 allows for easy, low-force cassette insertion and removal, reducing manufacturing costs and improving user experience by automating the mounting process without the need for additional noise-reducing components.
Implementation Method 1
a second engaging portion (256) passed through the interference portion (521) by the inclined surface (256a) provided in the second engaging portion (256), and the locking lever (52) is moved together with the cassette (2) in the front side (A)
Data Source
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AI summary
An image forming apparatus comprises a housing, a cassette insertable into the housing to store printing sheets; an automatic mounting apparatus provided between the housing and the cassette and to allow the cassette to be mounted thereon, where the automatic mounting apparatus comprises an engaging portion configured to protrude on a side surface of the cassette, a rail portion provided in the housing, and a locking device provided at the rear side of the rail portion to interfere with the engaging portion.