Printer Casing Stability During Cartridge Drawer Extension
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Solution Overview
Problem
Image forming apparatuses with drawer members for cartridge replacement are prone to toppling when a large downward force is applied after the drawer is pulled out, risking damage and instability during cartridge replacement.
Innovation Solution
Incorporating leg portions and a drawer supporting portion positioned downstream from the opening in the moving direction to stabilize the casing and prevent toppling by providing additional support during cartridge replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the drawer member is pulled out from the casing for cartridge replacement, then cartridge replacement becomes possible, but the casing may topple when a large downward force is applied to the drawer member
Solution Approach 1:
The support structure is extended in a new spatial dimension by adding leg portions that protrude from the bottom surface of the casing in the downward direction. This dimensional extension creates additional support points on the installation surface, forming a stable support area that prevents the casing from toppling when the drawer member is pulled out for cartridge replacement.
2Ease of operation
If the drawer member is pulled out completely for cartridge access, then cartridge replacement is enabled, but the structural integrity and stability of the apparatus is compromised
Solution Approach 1:
The support function is segmented into two distinct components: the main body of the casing and the protruding leg portions. This segmentation allows the leg portions to independently provide stability to the installation surface while the drawer member can be fully extracted for cartridge replacement, thus maintaining structural integrity during operation.
Data Source
AI summary
An image forming apparatus comprises: a casing including a side wall having an opening; a drawer member configured to support a plurality of cartridges in such a manner as to allow the cartridges to be detachably attached thereto, and to be movable through the opening from an inside position in which the drawer member is located inside the casing to an outside position in which the drawer member is located outside the casing in a moving direction; and a leg portion configured to support the casing. In this image forming apparatus, the leg portion includes a portion located downstream from the opening in the moving direction of the drawer member.