Movable Cover Feed Tray for Curled Sheet Handling
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Solution Overview
Problem
Existing feed trays for recording apparatuses face challenges in accommodating curled sheets without reducing their thickness, leading to increased sliding friction and potential foreign matter entry, which can cause feeding errors and discoloration due to exposure to sunlight.
Innovation Solution
A feed tray design with a pivotable tray plate and a movable cover that adjusts to accommodate curled sheets, preventing sliding friction and foreign matter entry by allowing the cover to move away from the tray body, ensuring stable sheet conveying without increasing the tray's thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the feed tray is designed with fixed thickness to accommodate maximum sheets, then sheet capacity is maximized, but curled sheets cannot be accommodated without increasing thickness
Solution Approach 1:
The cover is designed to be movable relative to the tray body, capable of moving away from the tray body when curled sheets are present. This dynamic structure allows the feed tray to accommodate curled sheets of any thickness while maintaining the same external dimensions, resolving the contradiction between sheet capacity and tray thickness.
2Quantity of substance
If the cover is forcedly fixed to accommodate curled sheets, then sheet capacity is maintained, but sliding friction increases causing feeding errors
Solution Approach 1:
The cover is designed to move away from the tray body when curled sheets are accommodated, preventing excessive sliding friction between the cover and sheets. This dynamic adjustment maintains feeding reliability while preserving full sheet capacity, even with curled sheets.
3Object-affected harmful factors
If the cover is fixed in closed state, then foreign matter entry is prevented, but curled sheets cannot be accommodated without increasing thickness
Solution Approach 1:
The cover can dynamically move away from the tray body to accommodate curled sheets while maintaining foreign matter protection when in the closed state. The movable design allows the cover to adapt to different sheet conditions without compromising protection or increasing tray thickness.
4Adaptability or versatility
If the cover is moved away to accommodate curled sheets, then curled sheet accommodation is enabled, but foreign matter entry risk increases
Solution Approach 1:
The cover is designed to be movable rather than fixed, allowing it to move away from the tray body when curled sheets need to be accommodated. This dynamic structure enables versatile accommodation of different sheet types while maintaining the ability to close and prevent foreign matter entry when needed.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design allows for stable sheet conveying regardless of curling, accommodating the maximum number of sheets without thickness increase and preventing foreign matter entry and discoloration, ensuring reliable printing operations.
Implementation Method 1
a frictional force between the feed roller and the uppermost sheet causes the sheet to become separated from the remaining sheets disposed therebelow, whereby the uppermost sheet is delivered (fed) from the tray body
Data Source
AI summary
A cover of a feed tray is attached to a tray body in a movable manner in a direction away from the tray body when the cover is in a closed state for covering an upper surface of the tray body.