Sheet Storing Unit Reinforcement for Image Forming Apparatus
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Solution Overview
Problem
Image forming apparatuses face challenges in maintaining structural integrity and reducing environmental impact due to the omission of bottom plates, which increases size and costs, and limits the size of the apparatus, especially during transportation where deformation is likely.
Innovation Solution
A sheet stacking apparatus where the sheet storing unit acts as a strengthening member by engaging with frame members to prevent deformation, reducing the need for additional reinforcing structures and minimizing environmental impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the bottom plate is used for the bottom surface of the main body, then the structural strength is improved, but the size of the main body in the height direction becomes larger
Solution Approach 1:
The patent combines the bottom plate with the sheet storing unit into an integrated structure. The sheet storing unit serves dual purposes: storing sheets and providing structural reinforcement to prevent frame deformation during transportation, thereby eliminating the need for a separate bottom plate and reducing overall height.
Solution Approach 2:
The sheet storing unit is designed to perform multiple functions: it stores sheets for printing and simultaneously acts as a reinforcing member for the frame structure. This multi-functionality allows the removal of the dedicated bottom plate, reducing the apparatus height while maintaining structural integrity.
2Length of stationary object
If the bottom plate is omitted to reduce size, then the height is reduced, but the structural strength during transportation deteriorates
Solution Approach 1:
The bottom plate function is merged with the sheet storing unit, which is already a necessary component for the apparatus to function. This integration allows the height to be reduced while the structural reinforcement function is maintained through the sheet storing unit's design.
Solution Approach 2:
The sheet storing unit serves as both a functional component for holding sheets and as a structural reinforcement element. By making it bear dual responsibilities, the design achieves compact height without compromising transportation strength.
3Loss of substance
If the thickness of plates used to form the frame member is reduced to lower environmental load, then the manufacturing cost is reduced, but the resistance to deformation during transportation deteriorates
Solution Approach 1:
The structural reinforcement function is merged with the sheet storing unit, allowing the use of thinner frame plates. The sheet storing unit compensates for the reduced plate thickness by providing additional structural support during transportation.
Solution Approach 2:
The sheet storing unit serves as both a sheet storage device and a structural reinforcement element, enabling the frame to use thinner, more environmentally friendly materials while maintaining adequate strength through the dual-function design.
Data Source
AI summary
The image forming apparatus includes a sheet storing unit insertably and pullably attached to the frame unit, an image forming unit, and a frame unit. The frame unit includes two frame members parallel to each other with a predetermined distance therebetween and are connected and fixed to each other. The two frame members respectively include engaged portions. The sheet storing unit includes engaging portions respectively engageable with the engaged portions in a state where the sheet storing unit is inserted in the frame unit. In a state where the engaging portions respectively engage with the engaged portions, the engaging portions that respectively engage with the engaged portions and a portion between the two engaging portions of the sheet storing unit serve as strengthening members to regulate deformation of the two frame members by at least a predetermined amount.