Recording Apparatus Paper Jam Removal Mechanism
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Solution Overview
Problem
Existing recording apparatuses face difficulties in removing jammed paper without increasing the size of the casing, and struggle with removing paper left inside when the conveying unit is drawn out.
Innovation Solution
The recording apparatus features a return path unit with a horizontal conveying path that includes an upper and lower portion, where the side walls of the casing have a drawing port that allows the conveying unit and upper portion of the path to be drawn out, providing a perpendicular opening for easy removal of jammed paper, and an inner edge lower than the path's uppermost portion to facilitate hand insertion for removing paper left inside.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the conveying unit is drawn out of the casing together with paper placed on the holding surface, then the size of the casing may be prevented from increasing, but paper placed on the holding surface is sometimes caught in the recording unit or the like to be left in the casing, thus posing the problem of difficulty in removing the paper
Solution Approach 1:
The horizontal conveying path is divided into an upper portion and a lower portion. The upper portion is drawn out together with the conveying unit, while the lower portion remains in the casing. This segmentation allows the casing to maintain a compact size while providing access to the lower portion for paper removal through the opening.
Solution Approach 2:
The upper portion of the horizontal conveying path is extracted and drawn out of the casing together with the conveying unit. This extraction allows the conveying unit to be accessible for maintenance while the lower portion remains accessible through the opening for paper removal.
2Ease of operation
If the conveying unit is drawn out of the casing, then paper placed on the holding surface may be removed at the outside of the casing, but paper placed on the holding surface is sometimes caught in the recording unit or the like to be left in the casing
Solution Approach 1:
An opening is provided in the side wall of the casing in a direction perpendicular to the drawing direction of the conveying unit. This allows access to the lower portion of the horizontal conveying path from the side, providing an additional dimension for paper removal and ensuring that paper is not left in the casing.
3Ease of operation
If the inner edge of the lower end of the opening is positioned the same or lower in height than the uppermost portion of the horizontal conveying path, then a wide space into which the hand is inserted may be provided, but the structure becomes more complex
Solution Approach 1:
The opening in the side wall serves multiple functions: it provides access for removing paper from the lower portion of the horizontal conveying path, and it also provides access for inserting a hand to retrieve paper that may be left in the casing. This multi-functionality simplifies the overall structure while maintaining ease of operation.
Data Source
AI summary
A recording apparatus includes a recording unit, a conveying unit disposed below the recording unit, a return path unit configured to return the recording medium from the upstream side of the recording unit to the conveying unit, and a casing. The return path unit is disposed below the conveying unit and includes a horizontal conveying path including an upper portion and a lower portion. The side walls of the casing include a drawing port through which the conveying unit and a least the upper portion of the horizontal conveying path are drawn out, and an opening facing in a direction perpendicular to the drawing direction thereof. The inner edge of the lower end of the opening is positioned the same or lower in height than the uppermost portion of the horizontal conveying path in the return path unit.