Cartridge Support Structure for Stable Pull-Out Image Forming Units
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Solution Overview
Problem
Existing image forming apparatuses face instability when a moving member is pulled out from the apparatus main body, leading to difficulties in stably attaching and detaching cartridges.
Innovation Solution
The image forming apparatus incorporates a metal member attached to an opening/closing portion, which supports the moving member between first and second support portions, ensuring stable support when the moving member is exposed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the moving member is pulled out from the apparatus main body for cartridge attachment/detachment, then the cartridge can be accessed, but the moving member becomes unstable
Solution Approach 1:
A support portion is introduced as an intermediary element between the moving member and the apparatus main body. This support portion provides additional stabilization to the moving member when it is in the pulled-out position, preventing instability without interfering with the cartridge attachment/detachment operation. The support portion acts as a mediator that maintains structural integrity while allowing functional movement.
2Ease of operation
If the opening/closing portion is made rotatable to open the opening for moving member access, then the moving member can be accessed, but the structural integrity of the apparatus is compromised
Solution Approach 1:
The opening/closing portion is segmented into multiple functional areas: a rotatable portion that enables opening/closing motion for access, and support portions that maintain structural integrity. This segmentation allows different parts of the same component to fulfill conflicting requirements - the rotatable section provides accessibility while the support sections preserve strength and stability.
Data Source
AI summary
An image forming apparatus including: an apparatus main body having an opening; a moving member holding a cartridge and movable through the opening between a housed position and an exposed position; an opening/closing portion configured to be rotatable between an open position and a closed position, and includes a first support portion and a second support portion that support the moving member located at the exposed position; and a metal member that is attached to the opening/closing portion and faces the moving member in a state in which the moving member is located at the exposed position and supported by the first support portion and the second support portion. The metal member is placed between the first support portion and the second support portion in a rotation axis direction of the opening/closing portion.