Charging Device Cleaner Height Adjustment Mechanism
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Solution Overview
Problem
Conventional scorotron charging devices with serrated corona electrodes face issues where the cleaning roller may damage the protruding portions at the end of the discharging electrode during the cleaning process, leading to inefficient contamination removal and potential damage.
Innovation Solution
A charging device with a discharging electrode featuring protruding portions, a cleaner mechanism to remove contaminants, and a height adjustment mechanism to prevent damage by ensuring the cleaner interferes with protruding portions without direct contact at the end, allowing for safe and effective cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a cleaning roller is biased towards the discharging electrode side to clean the protruding portions, then the cleaning effectiveness is improved, but the protruding portion at the front end may be damaged due to direct contact
Solution Approach 1:
A height adjustment mechanism is provided to preliminarily adjust the position of the cleaning roller before it contacts the discharging electrode. This allows the cleaning roller to be positioned at an appropriate height to clean the protruding portions without directly contacting and damaging the front end protruding portion.
Solution Approach 2:
The height adjustment mechanism acts as an intermediary between the cleaning roller and the discharging electrode, enabling controlled interaction. By adjusting the height, the mechanism mediates the contact between the cleaning roller and the protruding portions, ensuring effective cleaning while preventing damage.
2Productivity
If the cleaning roller applies pressure to the protruding portions for effective cleaning, then contaminant removal is improved, but the structural integrity of the discharging electrode may be compromised
Solution Approach 1:
The height adjustment mechanism allows preliminary positioning of the cleaning roller to optimize the contact pressure. By adjusting the height before cleaning, appropriate pressure can be applied to remove contaminants effectively while avoiding excessive pressure that could damage the discharging electrode structure.
Solution Approach 2:
The height of the cleaning roller is adjustable, allowing changes in the contact parameter between the cleaning roller and the discharging electrode. This parameter adjustment enables optimization of cleaning pressure to achieve effective contaminant removal while preventing structural damage.
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 the cleaning of discharging electrodes without risking damage to the protruding portions, maintaining the electrode's functionality and extending its lifespan.
Implementation Method 1
a high voltage is applied to a discharging electrode provided to the charging device for charging the surface of the photosensitive drum, and the discharging electrode performs corona discharge towards the surface of the photosensitive drum
Data Source
AI summary
To provide a charging device that allows a discharging electrode to be cleaned without damaging a protruding portion at an end portion of the discharging electrode. The device is provided with: a discharging electrode including a plurality of protruding portions arranged along a predetermined direction, the discharging electrode discharging electricity from at least part of the protruding portions; a cleaner for cleaning at least some protruding portions included in the plurality of protruding portions; a cleaner conveyance mechanism for conveying the cleaner along the predetermined direction for performing the cleaning, such that the cleaner interferes with at least some protruding portions included in the plurality of protruding portions; and a cleaner height adjustment mechanism for adjusting a height of the cleaner in a vicinity of the protruding portion where the cleaner reaches at first.