Corona Charger Airflow Gap Layout for Cleaner Center Electrodes
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In chargers with three or more odd-numbered wire electrodes, the counter electrode facing the center wire electrode hinders the introduction of airflow into the central region of the charger's internal space, leading to potential adhesion of discharge products and paper dust.
Innovation Solution
The charger design includes three or more odd-numbered wire electrodes extending along an intersection direction, with a center counter electrode divided into two portions and an air guide plate directing airflow to the gap between these portions, ensuring airflow is directed to the central region.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a center counter electrode is provided facing the center wire electrode in a charger with three or more odd-numbered wire electrodes, then the charger structure is improved for uniform charging, but the introduction of airflow into the central region of the space surrounded by the counter electrode is hindered
Solution Approach 1:
The center counter electrode is divided into a first portion and a second portion arranged with a gap in the movement direction. This segmentation allows airflow to be introduced into the central region while maintaining the electrode's functional integrity for uniform charging across the photosensitive body surface.
Solution Approach 2:
An air guide plate is introduced as an intermediary component to direct airflow through the gap between the first and second portions of the center counter electrode. This mediator enables airflow introduction without compromising the electrode structure's charging uniformity function.
2Device complexity
If airflow is not introduced to the central region, then the charger structure remains simple, but discharge products and paper dust adhere to the wire electrodes and counter electrode
Solution Approach 1:
The center counter electrode is segmented into two portions with a gap, creating a built-in airflow passage. This segmentation enables airflow introduction with minimal additional structure, as the gap itself serves as the flow channel rather than requiring complex ducting systems.
Solution Approach 2:
The charger structure utilizes its own components (the gap in the center counter electrode and the air guide plate) to achieve airflow introduction. The air guide plate, which may be integrated with existing structures, directs airflow through the existing gap, making the system self-sufficient without requiring entirely separate airflow generation systems.
3Object-affected harmful factors
If the center counter electrode is divided into two portions with a gap, then airflow can be introduced to the central region, but the electrode structure becomes more complex
Solution Approach 1:
The center counter electrode is divided into a first portion and a second portion with a gap between them. This segmentation is a straightforward structural modification that creates an airflow passage without requiring complex multi-component assemblies, maintaining relative simplicity while enabling airflow introduction.
Solution Approach 2:
The gap between the first and second portions of the center counter electrode serves dual functions: it maintains the electrical functionality of the electrode for uniform charging while simultaneously serving as an airflow passage to prevent adhesion of discharge products. This multi-functionality reduces the need for separate components.
4Object-affected harmful factors
If an air guide plate is added to direct airflow to the gap, then airflow introduction is improved, but the device complexity increases
Solution Approach 1:
The air guide plate serves as a simple intermediary component that directs airflow from the airflow generator through the gap in the center counter electrode. As a basic guiding structure, it adds minimal complexity compared to more sophisticated airflow control systems.
Solution Approach 2:
The air guide plate is positioned to utilize the natural flow direction from the airflow generator, requiring minimal active control or adjustment mechanisms. The structure serves itself by passively directing airflow through its geometric configuration rather than requiring active flow control systems.
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 configuration effectively directs airflow to the central region, reducing the adhesion of discharge products and paper dust, thereby improving the charger's operational efficiency and cleanliness.
Implementation Method 1
Corona discharge is generated between the wire electrode and the counter electrode while moving the surface of the photosensitive body. As a result, the surface of the photosensitive body is charged.
Implementation Method 2
an air guide plate that directs a part of an airflow sent to a region surrounded by the center counter electrode and the two end counter electrodes toward the gap between the first portion and the second portion
Data Source
AI summary
A charger includes three or more odd-numbered wire electrodes that extend along an intersection direction intersecting a movement direction of a photosensitive body and being along a surface of the photosensitive body, and are arranged along the movement direction; a center counter electrode facing a center wire electrode that is arranged at a center in arrangement of the odd-numbered wire electrodes, and including a first portion and a second portion that are arranged in a region on a side opposite to the photosensitive body with respect to the center wire electrode, with a gap formed in the movement direction; end counter electrodes facing end wire electrodes that are arranged at both ends in the arrangement of the odd-numbered wire electrodes, and being positioned at both ends of the arrangement of the odd-numbered wire electrodes to sandwich the wire electrodes; and an air guide plate that directs a part of an airflow sent to a region surrounded by the center counter electrode and the two end counter electrodes toward the gap between the first portion and the second portion.