Separation Force Receiving Member for Process Cartridge
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Solution Overview
Problem
Existing processing cartridges face delays in separating the developing roller from the photosensitive drum during cleaning, leading to incomplete drum cleaning and potential printing defects due to the need for the separation force receiving member to slide a certain distance before pushing the developing cartridge.
Innovation Solution
A processing cartridge design with a separation force receiving member that includes a force receiving portion and a force transmitting portion, allowing the developing cartridge to rotate synchronously when the separation force is applied, thereby preventing delays in separation and ensuring effective cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the separation force receiving member is designed to slide a predetermined distance before pushing the developing cartridge, then the developing roller can be separated from the photosensitive drum, but the separation process is delayed and cleaning time is insufficient
Solution Approach 1:
The separation force receiving member is divided into a sliding portion and a force transmitting portion. The sliding portion slides along the guide groove to guide the separation process, while the force transmitting portion directly transmits force to the developing cartridge. This segmentation allows the force transmission to begin immediately without waiting for the entire member to slide the full distance, thus reducing separation delay while maintaining reliable separation function.
2Loss of time
If the separation force receiving member directly pushes the developing cartridge without sliding first, then separation is immediate, but the member may detach or fail to maintain proper contact during the process
Solution Approach 1:
The guide groove acts as an intermediary constraint that guides the sliding portion of the separation force receiving member. This intermediary structure ensures that the member maintains proper contact and follows the correct path during separation, preventing detachment while enabling immediate force transmission to the developing cartridge for rapid separation response.
3Ease of operation
If the force transmitting portion is movably connected to the developing cartridge, then the member can slide smoothly along the guide groove, but the connection may become loose or detach during operation
Solution Approach 1:
The force transmitting portion is designed with movable connection that allows dynamic adjustment during the separation process. The connection maintains flexibility to accommodate the sliding motion along the guide groove while incorporating features that ensure stable engagement, preventing loosening or detachment during operation through controlled movement rather than rigid fixation.
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
The design ensures timely and complete separation of the developing roller from the photosensitive drum, preventing printing defects by maintaining contact with the separation force applying member and producing sliding frictional resistance to prevent detachment.
Implementation Method 1
the force receiving portion is configured to receive a force that enables the developing cartridge to rotate to the separation position
Implementation Method 2
the sliding guide portion and the first end cover are relatively slidably provided
Data Source
AI summary
A process cartridge includes a developing cartridge having a developing roller; a drum cartridge having a photosensitive drum; and a first end cover and a second end cover. The developing cartridge is rotatably supported on the first end cover and the second end cover. A separation force receiving member mounted at the developing cartridge; the separation force receiving member includes a force-receiving portion, a force transmission portion and a sliding guide portion; the force-receiving portion is used for receiving an acting force that makes the developing cartridge rotate to the separation position; the sliding guide portion and the first end cover are arranged in a manner of being able to slide relative to each other; and when the separation force receiving member slides relative to the first end cover, the force transmission portion synchronously drives the developing cartridge to rotate.