Openable Member Cartridge Mounting Guidance and Impact Protection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional image forming apparatuses face challenges in ensuring complete and secure mounting of cartridges, leading to potential misalignment and image defects due to incomplete mounting states, and during transportation, cartridges may experience impact that can cause damage.
Innovation Solution
The image forming apparatus incorporates an openable member with a guiding portion, a recessed portion, and an urging portion to guide and push the cartridge into a complete mounting position, reducing friction and preventing damage from transportation impacts without the need for cushioning members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If cartridges are mounted without guiding and urging mechanisms, then the mounting process is simple, but the cartridge may be incompletely mounted leading to misalignment and image defects
Solution Approach 1:
The openable member serves as an intermediary mechanism between the cartridge and the main assembly. It includes a guiding portion that guides the cartridge during insertion and an urging portion that pushes the cartridge to ensure complete mounting. This intermediary structure resolves the contradiction by providing precision mounting guidance while keeping the overall system relatively simple through the use of a single integrated component.
Solution Approach 2:
The guiding portion of the openable member performs preliminary action by guiding the cartridge into the correct position during insertion. This preliminary guidance ensures that the cartridge is properly aligned before the urging portion pushes it to the final mounting position, thereby achieving precise mounting without requiring complex multi-step mechanisms.
2Object-affected harmful factors
If cushioning members are added to protect cartridges from transportation impacts, then cartridge protection is improved, but device complexity and material usage increase
Solution Approach 1:
The urging portion of the openable member performs a dual function: it pushes the cartridge to ensure complete mounting during the closing operation, and simultaneously acts as a cushioning mechanism to absorb transportation impacts. This self-service approach resolves the contradiction by providing impact protection without requiring separate cushioning members, thereby maintaining structural simplicity.
Solution Approach 2:
The openable member is designed with multi-functionality, serving both as a mounting guidance mechanism (guiding portion) and a cushioning mechanism (urging portion). This universal design allows a single component to address multiple concerns - precise mounting and impact protection - without increasing overall device complexity or requiring additional materials.
3Manufacturing precision
If the openable member continuously contacts the cartridge, then mounting precision is maintained, but friction increases making mounting more difficult
Solution Approach 1:
The urging portion provides partial action by pushing the cartridge only during the closing operation of the openable member, rather than continuously contacting it. This partial action is sufficient to ensure complete mounting and overcome friction, while not creating excessive resistance during insertion. The guiding portion provides continuous guidance without significant friction, resolving the contradiction between precision and ease of operation.
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
This solution ensures reliable cartridge mounting, reduces image defects by minimizing misalignment, and alleviates transportation impacts, enhancing usability and reducing the need for additional cushioning materials.
Implementation Method 1
an urging portion as a part of the supporting surface, wherein when the openable member is in the open position, the supporting surface is capable of guiding the cartridge to the opening, wherein during a closing operation of the openable member, the urging portion and the portion-to-be-urged contact each other to push the cartridge toward the mounting completion position
Data Source
AI summary
An image forming apparatus includes a main assembly provided with an opening through which a cartridge is to be mounted, an openable member movable between a closed position and an open position, and a cartridge, including a portion-to-be-urged, detachably mountable to the main assembly in a mounting completion position. When the openable member is open, a supporting surface is capable of guiding the cartridge to the opening, and during a closing operation, an urging portion and the portion-to-be-urged contact each other to push the cartridge toward the mounting completion position. When the openable member is in the closed position, a spacing is provided between the recessed portion and the portion-to-be-urged. The cartridge is a process cartridge having a photosensitive member unit and a developing device unit including the portion-to-be-urged.