Pressing Member Guide Portion for Sheet Transfer Stability
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Solution Overview
Problem
Conventional sheet accommodating devices and image recording apparatuses face issues with unstable sheet supplying due to floating sheets and oblique sheet transfer, leading to inconsistent performance in sheet transfer paths.
Innovation Solution
A sheet accommodating device with a guide portion on the pressing member to stabilize sheet transfer and an image recording apparatus featuring side guides that correct oblique sheet transfer by gradually decreasing the distance between guide portions towards the sheet-supply roller, ensuring stable resupplying.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If spring plates are used to bias recording sheets toward the bottom plate, then sheet floating is prevented, but sheet transfer direction becomes unstable
Solution Approach 1:
The pressing member is divided into a pressing portion that contacts the sheet and a guide portion that extends in the sheet transferring direction. This segmentation allows the pressing member to simultaneously perform pressing and guiding functions, resolving the contradiction between preventing sheet floating and ensuring stable sheet transfer direction.
Solution Approach 2:
The pressing member is designed to serve multiple functions: it presses the sheet toward the bottom plate to prevent floating, and its guide portion simultaneously guides the sheet in the transferring direction. This multi-functionality eliminates the need for separate guiding components while ensuring stable sheet transfer.
2Reliability
If side guides are added to correct oblique sheet transfer, then sheet transfer path stability improves, but device complexity increases
Solution Approach 1:
The guide function is merged with the pressing member by extending it in the sheet transferring direction. This integration combines the pressing and guiding functions into a single component, correcting oblique sheet transfer without increasing device complexity through additional side guides.
Solution Approach 2:
The pressing member is designed to serve multiple functions: it presses the sheet toward the bottom plate to prevent floating, and its guide portion simultaneously guides the sheet in the transferring direction. This multi-functionality eliminates the need for separate guiding components while ensuring stable sheet transfer.
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 solution effectively prevents sheet floating and stabilizes sheet supplying performance, correcting oblique transfers and maintaining consistent sheet transfer paths, thus enhancing the reliability of sheet resupplying in image recording operations.
Implementation Method 1
a pressing member configured to press the sheet accommodated in the tray
Implementation Method 2
the pressing member includes a guide portion configured to guide, where the sheet accommodated in the tray is transferred, the transferred sheet toward a downstream side in a sheet transferring direction in which the sheet is transferred
Data Source
AI summary
A sheet accommodating device including: a tray configured to accommodate a sheet; and a pressing member configured to press the sheet accommodated in the tray, wherein the pressing member includes a guide portion configured to guide, where the sheet accommodated in the tray is transferred, the transferred sheet toward a downstream side in a sheet transferring direction in which the sheet is transferred.