Printer Frame Positioning Structure for Distortion-Resistant Accuracy
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Solution Overview
Problem
The weight of components in a printing apparatus can cause distortion in the frame, leading to a decrease in printing accuracy and robustness, especially with the increasing multifunctionality of such devices.
Innovation Solution
A printing apparatus design that includes a lower frame with an engaged portion and an upper frame supported by a positioning portion extending below the engaged portion, with a waste liquid tank accommodating portion acting as a support assisting unit, simplifying the lower frame structure and improving robustness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If heavy components are mounted to the frame, then the printing function is implemented, but the frame experiences distortion and printing accuracy decreases
Solution Approach 1:
The frame is divided into an upper frame and a lower frame as separate components. The lower frame supports heavy components (power source, conveyance mechanism), while the upper frame holds printing elements. This segmentation distributes weight and prevents distortion of the entire frame structure, maintaining both robustness and printing accuracy.
Solution Approach 2:
The positioning portion extends downward from the upper frame to engage with the lower frame, creating a vertical support structure. This dimensional arrangement allows the upper frame to be supported at multiple points along the vertical axis, distributing stresses and preventing frame distortion while maintaining structural integrity.
2Adaptability or versatility
If the apparatus structure is complicated to accommodate multiple functions, then multi-functionality is achieved, but robustness decreases
Solution Approach 1:
The lower frame serves multiple functions: it supports the power source, accommodates the conveyance mechanism, provides structural support for the entire apparatus, and forms part of the housing. This multi-functional design consolidates several components into one robust structure, maintaining reliability while enabling multi-functionality.
Solution Approach 2:
The positioning portion integrates multiple functions: it positions the upper frame relative to the lower frame, supports the upper frame weight, and provides structural connection between frames. This merging of functions into a single component simplifies the overall structure while maintaining robustness.
Data Source
AI summary
Disclosed is a printing apparatus that includes a printing unit for performing printing on a sheet, a lower frame of a housing that accommodates the printing unit and forms at least a part of a conveyance path of the sheet, an upper frame supported by the lower frame as another part of the housing, and a unit mounted on the lower frame and supporting the upper frame together with the lower frame. The unit includes a positioning portion for positioning with respect to the lower frame. The positioning portion includes an engaging portion for engaging with the lower frame and being more downwardly elongated than an engaged portion of the lower frame engaged with the engaging portion.