Protective Member for Cartridge Transport Stability
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Solution Overview
Problem
Existing image forming apparatuses face challenges in protecting the process cartridge during transport, as existing protective members do not adequately prevent damage from vibration and shock, leading to potential toner leakage and equipment deterioration.
Innovation Solution
The image forming apparatus incorporates a protective member that is removably supported by the drum and developing cartridges, featuring engagement portions that fix the relative positional relationship between the cartridges, reducing sliding and damage during transport by separating the photosensitive drum and development roller, and utilizing memory protection portions to maintain contact with memory units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the process cartridge is dismounted from the apparatus main body for separate packing, then the cartridge can be protected during transport, but the relative positional relationship between the drum and developing cartridges cannot be maintained, leading to potential damage
Solution Approach 1:
The patent combines the drum cartridge and developing cartridge into a single integrated process cartridge assembly that is packed together as one unit within the apparatus main body. This merging ensures that the relative positional relationship between the two cartridges is maintained during transport, preventing damage while allowing both to be protected simultaneously.
Solution Approach 2:
The developing cartridge is nested within or adjacent to the drum cartridge in a compacted configuration inside the apparatus main body. This nesting arrangement allows both cartridges to be packed together in a space-efficient manner while maintaining their relative positions, effectively protecting them during transport without requiring separate packing.
2Productivity
If the process cartridge is packed inside the apparatus main body, then transport efficiency is improved, but the cartridges may be damaged by vibration and shock during transport
Solution Approach 1:
The patent incorporates cushioning structures such as buffer members or padded compartments within the apparatus main body that are positioned to absorb and dissipate vibration and shock before these forces can reach the cartridges. This beforehand cushioning protects the cartridges during transport while maintaining the compacted packing configuration for improved transport efficiency.
Solution Approach 2:
The patent introduces intermediary protective elements such as buffer members, foam padding, or resilient supports that act as mediators between the external transport environment and the cartridges. These intermediaries absorb mechanical stresses and protect the cartridges from direct exposure to vibration and shock while allowing the cartridges to remain in their compacted positions for efficient transport.
3Object-affected harmful factors
If existing protective members are used, then some protection is provided, but they do not adequately prevent toner leakage and equipment deterioration
Solution Approach 1:
The patent divides the protective system into multiple functional segments: structural support elements to maintain cartridge positions, cushioning elements to absorb shock, and sealing elements to prevent toner leakage. This segmentation allows each component to address specific protection needs, with the combined effect providing comprehensive protection that prevents both toner leakage and equipment deterioration.
Solution Approach 2:
The patent employs composite protective structures that combine different materials with complementary properties - such as rigid supports for positional stability, elastic cushioning materials for shock absorption, and sealing materials with low friction and chemical resistance to prevent toner leakage. This composite approach creates a multi-functional protective system that adequately prevents toner leakage and equipment deterioration.
Data Source
AI summary
An image forming apparatus includes an apparatus main body, a first unit dismountable from the apparatus main body, a second unit dismountable from the first unit, and a protective member. The first unit includes a photosensitive member, a transfer unit, and a first unit memory section. The second unit includes a development roller, a storage section that stores a developer, and a second unit memory section. The apparatus main body includes a first main body contact that is electrically connectable to the first unit memory section and a second main body contact that is electrically connectable to the second unit memory section. When the image forming apparatus is packed, the first unit and the second unit are mounted to the apparatus main body with the second unit mounted to the first unit and with the protective member mounted to the first unit and the second unit.