Rotational Shaft Support for Printing Apparatus Sheet Handling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing printing apparatuses with rotatable covers have low workability when installing or removing a roll sheet, as the sheet end must be inserted into a confined area surrounded by the conveying mechanism, making it difficult to replace the roll until it is rewound.
Innovation Solution
A printing apparatus design where the rotational shaft is supported by one frame and separated from the other, creating gaps that allow easier insertion and removal of the sheet end between the conveying rollers, improving workability by providing more space for sheet handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the rotational shaft is supported by two frames with the conveying mechanism interposed therebetween, then the cover is stably supported, but the workability for installing and removing the sheet end is reduced
Solution Approach 1:
The patent extracts the support function from the second frame by making the rotational shaft supported only by the first frame, while separating the second end of the shaft from the second frame. This creates a gap between the shaft and second frame, providing access space for sheet installation and removal operations without compromising the cover's rotational support stability.
Solution Approach 2:
The patent segments the support structure by having the rotational shaft supported at only one location (first frame) while being separated from the other frame. This segmentation creates operational space between the shaft and the second frame, improving accessibility for sheet handling while maintaining structural stability through the covered portion's rotation axis alignment.
2Stability of the object's composition
If the rotational shaft is supported by two frames, then the structure is more stable, but the area for sheet insertion becomes confined
Solution Approach 1:
The patent removes the support connection between the rotational shaft and the second frame, extracting the shaft from being constrained by both frames. This creates an expanded insertion area between the shaft and the second frame, allowing easier access for sheet installation while the shaft remains stable through its support by the first frame and its function as the cover's rotation axis.
Data Source
AI summary
A printing apparatus includes: a sheet storing part configured to store a sheet; a conveying mechanism configured to convey the sheet taken out from the sheet storing part; a first frame and a second frame arranged in an opposing direction with the conveying mechanism interposed therebetween; a printing part configured to perform printing on the sheet conveyed by the conveying mechanism; a cover composing at least a part of an upstream side, of the printing apparatus, with respect to the printing part in a conveyance direction in which the sheet is conveyed by the conveying mechanism; and a rotational shaft extending in the opposing direction and configured to support the cover to be rotatable. The rotational shaft has a first end and a second end in the opposing direction, and the first end is supported by the first frame and the second end is separated away from the second frame.