Developing Module Groove Constrains Gear Shake
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Solution Overview
Problem
The existing image forming apparatuses in business machines face issues with image quality due to shaking of the developing module caused by gear engagement, leading to increased manufacturing costs and complexity.
Innovation Solution
The apparatus incorporates a groove with an inclined angle matching the pressure angle of the gear to constrain the developing module's movement, reducing shaking and incorporating an adjusting member with an elastic element to maintain stable contact between the photosensitive drum and developing roller.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If driving gear and slave gear are engaged for simultaneous rotation of organic photo conductor and developing roller, then the developing roller can be driven to rotate, but the developing roller shakes due to moment transmission along the pressure angle
Solution Approach 1:
The patent extracts the harmful moment transmission function from the gear engagement system by introducing a guiding channel that separates the driving force transmission from the rotational drive. The guiding channel removes the lateral moment forces that cause shaking, allowing only the necessary rotational motion to be transmitted through the gear engagement between driving gear and slave gear.
Solution Approach 2:
The guiding channel acts as an intermediary element between the gear engagement system and the developing roller. It mediates the force transmission by providing a constrained path that allows rotational motion while blocking the transmission of harmful moment forces, thus protecting the developing roller from shaking.
2Stability of the object's composition
If an all-directional connector is used to connect organic photo conductor and developing roller, then the force transmission problem is solved, but the manufacturing cost increases due to complex structure
Solution Approach 1:
The patent merges the guiding function and the connection function into a single integrated guiding channel structure. Instead of using a separate all-directional connector, the guiding channel combines the support, guidance, and force transmission stabilization functions, thereby reducing structural complexity and manufacturing cost.
Solution Approach 2:
The guiding channel serves multiple functions simultaneously: it supports the developing roller, guides its motion, constrains lateral forces, and stabilizes the force transmission from the gear engagement. This multi-functionality eliminates the need for separate specialized components like all-directional connectors.
3Stability of the object's composition
If gear series are used to engage and constrain each other, then the developing module can be constrained, but the cost increases and space occupation increases
Solution Approach 1:
The patent extracts the constraint function from the gear series system and relocates it to the guiding channel. The guiding channel alone provides the necessary constraint for the developing module, eliminating the need for additional constraint gears and reducing overall system complexity.
Solution Approach 2:
Instead of using multiple gears to achieve constraint, the patent inverts the approach by using a single guiding channel structure to provide both guidance and constraint. This reverses the conventional wisdom of using complex gear series for constraint, achieving the same effect with simpler means.
Data Source
AI summary
The present disclosure illustrates an image forming apparatus with structural connection function. The image forming apparatus can be applied to a business machine, to solve the problem of bad quality of image caused by shaking of a developing module. The image forming apparatus is characterized in that the groove with the inclined angle is equal to the pressure angle of the gear to constrain the operation direction of the developing module, so as to prevent the developing module from shaking. The present disclosure just modifies the design of the guiding channel to constrain the developing module, so the cost of components can be reduced efficiently.