Variable Thickness Light Guide Body for Static Elimination
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Solution Overview
Problem
Existing static elimination devices for photoconductors in image forming apparatuses often emit uniform light, which can lead to excessive exposure and degradation over time, causing ghosting issues and inefficient neutralization.
Innovation Solution
A light guide body with a variable thickness and angular emission pattern, allowing for differential light distribution along its circumference, which adjusts based on the photoconductor's condition to ensure optimal neutralization without initial strong light exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If uniform light is emitted from the light guide body, then the photoconductor is neutralized, but excessive exposure occurs causing degradation and ghosting
Solution Approach 1:
The light guide body is designed with non-uniform thickness around its circumference, creating different light emission intensities at different angular positions. This local variation in thickness allows certain areas to emit more light while other areas emit less, preventing excessive exposure and degradation of the photoconductor surface.
Solution Approach 2:
The light guide body employs asymmetric thickness distribution around its circumference rather than uniform symmetry. This asymmetric design ensures that light is not emitted uniformly in all directions, thereby avoiding the excessive exposure problem while maintaining effective neutralization of the photoconductor.
2Productivity
If strong light is emitted initially for neutralization, then neutralization is achieved quickly, but ghosting issues occur over time
Solution Approach 1:
By creating local variations in light emission intensity through non-uniform thickness distribution, the light guide body can provide strong light emission in specific angular regions while maintaining weaker emission in other regions. This allows effective neutralization without causing the excessive exposure that leads to ghosting.
Solution Approach 2:
The light guide body emits light in a periodic manner around its circumference due to the varying thickness, creating a rhythmic light emission pattern. This periodic variation in light intensity helps in achieving neutralization while preventing the continuous strong exposure that causes ghosting over time.
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 solution ensures prolonged photoconductor neutralization and suppresses ghosting by gradually increasing light intensity as needed, maintaining performance over time while preventing initial degradation.
Implementation Method 1
a light guide body 72 extending in a rod shape and guiding light incident from an end surface 721 thereof to emit the light from a circumferential surface 722
Data Source
AI summary
A light guide body that extends in a rod shape and guides light incident from an end surface thereof to emit the light from a circumferential surface thereof, the light guide body having a shape such that according to an angle of a circumferential direction around the light guide body, an amount of emitting light in a direction of the angle is different. Additionally, a static elimination device and an image forming apparatus include the light guide body.