Image Recording Apparatus Sheet End Moving Method
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Solution Overview
Problem
The existing image processing apparatus with sheet feed trays faces challenges in reducing contact between the casing and the downstream end of the sheet-like medium during movement of the feed tray, leading to potential paper jams.
Innovation Solution
The image recording apparatus includes a feed tray, a casing, a cutter positioned inside the casing above the feed tray, and a supplier that applies energy to the sheet medium to move its end towards the feed tray after cutting, thereby reducing contact with the casing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the cutter is disposed inside the casing above the feed tray, then the structure of the sheet feed tray is simplified, but the downstream end of the sheet medium may come into contact with the casing during feed tray movement
Solution Approach 1:
The cutter cuts the sheet medium in advance before the feed tray is moved, creating a detached end that cannot interfere with the casing during subsequent feed tray movement. This preliminary cutting action prevents the harmful contact that would otherwise occur.
Solution Approach 2:
The downstream end of the sheet medium is effectively 'removed' from the conveyance path by cutting it off before the feed tray moves. The detached end is no longer part of the active sheet being handled, eliminating the risk of contact with the casing.
2Ease of operation
If the feed tray is moved with respect to the casing, then the feed tray can be drawn out for sheet discharge, but the downstream end of the sheet medium may contact the casing causing paper jams
Solution Approach 1:
The sheet medium is cut before the feed tray is moved outward. This timing ensures that the sheet end is detached and cannot interfere with the casing during the feed tray withdrawal operation, enabling smooth movement without paper jams.
Solution Approach 2:
The cutting operation performs a preliminary anti-action by removing the potential source of interference (the sheet end) before the harmful interaction (contact with casing during movement) can occur.
Data Source
AI summary
There is provided an image recording apparatus including: a feed tray configured to accommodate a roll body including a sheet medium wound in a roll shape, the feed tray having a support surface configured to support the sheet medium unwound from an accommodated roll body being the roll body accommodated in the feed tray; a casing; a cutter configured to cut the sheet medium, the cutter being disposed above the feed tray supported by the casing; a recorder; and a supplier configured to supply energy to the sheet medium in a time period in which the sheet medium is conveyed from the accommodated roll body to the cutter so as to move an end of the sheet medium toward the feed tray by the energy, the end being an end formed at a position between the cutter and the feed tray by cutting the sheet medium with the cutter.