Charging Device Cleaner Orientation Stability
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Solution Overview
Problem
Conventional scorotron charging devices face challenges in maintaining the relative position between the cleaner and the housing, especially when the opening in the housing faces upward or downward, affecting the cleaning of the discharge electrode.
Innovation Solution
A charging device with a U-shaped housing and a cleaner having protrusions that contact the bottom plate, allowing the cleaner to move and clean the discharge electrode regardless of the housing opening orientation, ensuring consistent positioning and cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the cleaner moves in the direction in which the discharge electrode extends to clean the discharge electrode, then the cleaning function is achieved, but the relative position between the moving cleaner and the housing changes when the opening faces upward or downward
Solution Approach 1:
The bottom plate serves as an intermediary reference surface. The cleaner is equipped with a protrusion that contacts the bottom plate, using it as a stable reference to maintain consistent positioning regardless of the opening orientation (upward or downward). This mediator enables the cleaner to achieve reliable cleaning while maintaining stable relative position.
2Reliability
If the discharge electrode is directly or indirectly attached to the housing, then the charging function is achieved, but it is difficult to maintain consistent cleaning contact when the housing opening orientation changes
Solution Approach 1:
The cleaner is designed with a protrusion that specifically contacts the bottom plate at a localized position. This local contact point provides a stable reference for the cleaner's positioning, ensuring consistent cleaning contact with the discharge electrode regardless of the overall housing opening orientation (upward or downward).
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
Enables effective cleaning of the discharge electrode and grid electrode regardless of the housing orientation, ensuring reliable operation of the charging device.
Implementation Method 1
a scorotron charging device for charging the surface of an image carrier
Implementation Method 2
a cleaner having a protrusion that comes into contact with a bottom plate of the housing and configured to move in the axial direction
Data Source
AI summary
A charging device includes: a housing having a U-shaped cross-section, disposed such that an opening thereof faces a surface of a rotating image carrier, and extending in an axial direction of the image carrier; a discharge electrode configured to charge the surface, the discharge electrode being attached to the housing, inside the housing, and extending in the axial direction; and a cleaner having a protrusion that comes into contact with a bottom plate of the housing and configured to move in the axial direction to clean the discharge electrode in a state in which the protrusion is in contact with the bottom plate, regardless of whether the opening in the housing faces upward or downward.