Damper for Photoreceptor Drum Oscillation Attenuation
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Solution Overview
Problem
Electrographic image forming apparatuses face challenges in minimizing oscillations and varying rotation rates of photoreceptor drums, leading to image blurring and reduced image quality due to inefficient power transmission systems.
Innovation Solution
Incorporating a damper, such as a viscoelastic body or a combination of a rotating resistor, viscous fluid, and linkage spring, within the power transmission system to attenuate oscillations and stabilize the rotation of photoreceptor drums, ensuring consistent power transmission and reducing image blurring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a gear train is used to transmit power from the driving motor to the photoreceptor drum, then power transmission is achieved, but oscillations are transmitted to the photoreceptor causing image blurring
Solution Approach 1:
An anti-oscillation rubber material is introduced as an intermediary element between the gears and the photoreceptor drum. This rubber material absorbs and attenuates the oscillations generated by the gear train, preventing them from being transmitted to the photoreceptor drum while still allowing power transmission to occur.
Solution Approach 2:
The oscillations and vibrations that are inherently generated by the gear train operation are converted from harmful factors into beneficial damping effects. The rubber material utilizes these oscillations to activate its viscoelastic properties, transforming the mechanical vibrations into energy dissipation that stabilizes the photoreceptor drum rotation.
2Productivity
If the photoreceptor drum rotation rate varies due to oscillation, then power transmission occurs, but image blurring results
Solution Approach 1:
The damping characteristics of the rubber material are optimized by adjusting its physical and chemical parameters, including hardness, viscosity, and molecular structure. These parameter changes enable the material to provide optimal oscillation attenuation across different operating conditions while maintaining consistent photoreceptor drum rotation rates.
3Object-affected harmful factors
If anti-oscillation rubber material is disposed between the gears, then oscillation attenuation is achieved, but the structure becomes more complex
Solution Approach 1:
The anti-oscillation rubber material is integrated into the existing gear train structure by positioning it between the gears and the photoreceptor drum. This merging approach allows the damping function to be incorporated into the power transmission path without requiring separate damping mechanisms or additional structural components.
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 effectively minimizes oscillation expansion and varying rotation rates of photoreceptor drums, thereby improving image quality by reducing image blurring and maintaining a compact, efficient power transmission system.
Implementation Method 1
a damper, such as a viscoelastic body
Implementation Method 2
a combination of a rotating resistor, viscous fluid, and linkage spring
Implementation Method 3
linkage spring
Data Source
AI summary
An image carrier driver includes an image carrier, a first power transmitter, a rotator, a second power transmitter, and a damper. The image carrier is configured to rotate by power generated by a driving source. The first power transmitter is configured to transmit the power from the driving source to the image carrier. The rotator is disposed further downstream than the image carrier in a flow of power transmission. The second power transmitter is configured to transmit the power from the image carrier to the rotator. The damper is disposed in the image carrier and is configured to attenuate an oscillation associated with the power transmission and transmitted to the image carrier.