Process Cartridge Power Receiving Part Control Mechanism
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Solution Overview
Problem
The universal joint in process cartridges for imaging devices experiences unsmooth pivoting and loosening due to repeated engagement and disengagement, leading to failure in engaging with the driving head, especially after long-term use and excessive vibration.
Innovation Solution
A process cartridge with a power receiving part that extends and retracts along its rotation axis, equipped with a control mechanism to engage with the driving head and maintain contact with the image bearing member at a certain pressure, ensuring stable power transmission and smooth engagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a universal joint structure is used for engaging with the driving head, then the process cartridge can be detachably mounted and moved, but repeated pivoting causes unsmooth pivoting and engagement failure after long-term use
Solution Approach 1:
The universal joint is divided into a first universal joint and a second universal joint, with the first universal joint engaged with the driving head and the second universal joint engaged with the force receiving part. This segmentation allows independent movement and reduces the cumulative wear and pivoting issues that occur in a single universal joint structure during repeated engagement and disengagement cycles.
2Ease of operation
If a universal joint structure is used for engaging with the driving head, then the process cartridge can be detachably mounted and moved, but excessive vibration during transportation causes pivoting center loosening and universal joint failure
Solution Approach 1:
By segmenting the universal joint into two separate joints (first universal joint and second universal joint) with distinct engagement points, the structure distributes vibration impacts and reduces the likelihood of pivoting center loosening that occurs in a single universal joint during transportation.
3Productivity
If the developer bearing member and image bearing member are kept in contact, then continuous development can be achieved, but the developer cartridge cannot be easily detached for replacement
Solution Approach 1:
The force receiving part is designed to be movable between a first position where the developer bearing member contacts the image bearing member for continuous development, and a second position where the developer bearing member separates from the image bearing member to enable easy detachment and replacement of the developer cartridge.
Data Source
AI summary
The present disclosure provides a process cartridge detachably mounted in an imaging device having a driving head. The imaging device includes a force applying assembly that includes a force applying part. The process cartridge includes a developer bearing member that rotates about an axis extending in a first direction; a developing cartridge frame supporting the developer bearing member; a driving force receiving assembly arranged on one side of the developing cartridge frame, the driving force receiving assembly having a power receiving part extending and retracting substantially in the first direction; and a control mechanism controlling the power receiving part to extend and retract, the control mechanism receiving the force of the force applying part to control the extension and retraction of the power receiving part.