Process Cartridge Positioning and Separation Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing image forming apparatuses face issues with positional deviations and vibrations of process cartridges, leading to deterioration of image forming accuracy and prolonged correction times when separating the developing roller from the photosensitive drum.
Innovation Solution
The image forming apparatus employs a consistent directional mechanism for both positioning and separating the process cartridges, using a first pressing member to secure the photosensitive cartridge and a second pressing member to separate the developer carrying member, ensuring both actions occur in the same direction to prevent displacement and vibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the developing roller is separated from the photosensitive drum by pressing in the opposite direction to positioning, then the developing roller can be separated from the photosensitive drum, but the process cartridge experiences positional deviation and vibration
Solution Approach 1:
The patent combines the positioning function and separation function into a single pressing member that acts in the same direction for both operations. The pressing member presses the photosensitive cartridge in a first direction to position it, and also presses the developing roller to separate it from the photosensitive drum, eliminating the need for opposite-direction pressing and thus preventing vibration and positional deviation.
2Adaptability or versatility
If separate pressing mechanisms are used for positioning and separation, then the functions can be performed independently, but the structure becomes more complex and introduces vibration
Solution Approach 1:
The pressing member is designed with multi-functionality, serving both as a positioning mechanism and a separation mechanism. By integrating these functions into a single component that operates in the same direction, the patent reduces structural complexity while maintaining the ability to perform both positioning and separation operations independently through control mechanisms.
3Ease of operation
If the process cartridge is pressed in opposite directions for positioning and separation, then the separation function is achieved, but vibration and positional deviation occur
Solution Approach 1:
The patent merges the positioning and separation operations into a single directional pressing action. The pressing member applies force in the same first direction for both positioning the photosensitive cartridge and separating the developing roller, thereby maintaining position stability while achieving separation without vibration or positional deviation.
Data Source
AI summary
An image forming apparatus includes an apparatus body, and a process cartridge removably mounted to the apparatus body. The process cartridge includes a photosensitive cartridge including a photosensitive member, and a developing cartridge including a developer carrying member, which is contactable with the photosensitive member, and which carries developer. The image forming apparatus further includes a first pressing member that presses the photosensitive cartridge in a first direction with respect to a positioning portion that is provided on the apparatus body, and a separating member that includes a second pressing member that acts in a second direction and thereby causes the developer carrying member to separate from the photosensitive member. The first direction and the second direction are substantially the same.