Fixing Device Access Structure for Simplified Pressure Switching
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Solution Overview
Problem
The configuration of existing image forming devices is complicated due to the engagement of an access member with a switching member for switching between pressing and pressure-released states of a pressing member, leading to a complex fixing device structure.
Innovation Solution
The image forming device employs a first access member to switch from a pressure-released state to a pressing state and a second access member to switch from a pressing state to a pressure-released state, using a switching mechanism with sliding contact and contact parts to activate the switching members, thereby simplifying the configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If one access member is engaged with the switching member to perform switching, then the switching function is achieved, but the configurations of the access member and switching member become complicated
Solution Approach 1:
The patent divides the switching function into two separate access members: the first access member engages with the switching member to activate pressing, while the second access member deactivates the switching member to release pressure. This segmentation eliminates the need for a single complex access member to handle both activation and deactivation functions, thereby reducing configuration complexity while maintaining operational ease.
2Adaptability or versatility
If the access member is engaged with the switching member for switching, then the pressing member can be switched between states, but the fixing device configuration becomes complicated
Solution Approach 1:
The switching capability is segmented into two independent access members with distinct functions: the first access member activates the pressing member, while the second access member deactivates it. This segmentation simplifies the fixing device configuration by avoiding the need for a single complex access member mechanism, while still providing full switching capability between pressed and released states.
3Volume of moving object
If a single access member performs both pressing and releasing switching, then the structure is more compact, but the configuration becomes complicated
Solution Approach 1:
Instead of using a single access member with complex internal mechanisms to handle both pressing and releasing functions, the patent employs two separate access members with simpler, dedicated functions. This approach may increase the overall volume slightly, but it significantly reduces the configuration complexity of the switching members and access member structures.
Data Source
AI summary
An image forming device comprises a fixing device that switches between a pressing state and a pressure-released state of a pressing member with respect to a rotatable fixing member by means of a switching member; and a first access member that covers the fixing device when the first access member is in a closed state, and exposes the fixing device when the first access member is in an opened state, wherein the fixing device includes a second access member that covers a component in a fixing device body when the second access member is in a closed state, and covers the component when the second access member is in an opened state, when closed from the opened state, the first access member activates the switching member to set the pressing member to the pressing state from the pressure-released state, and when opened from the closed state, the second access member activates the switching member to set the pressing member to the pressure-released state from the pressing state.