Recording Apparatus Receiving Tray with Projecting Sections
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Solution Overview
Problem
Existing recording apparatuses face challenges in properly stacking paper that tends to curl due to moisture expansion, especially when papers of different sizes are mixed, leading to bending or scratching issues on the medium receiving tray.
Innovation Solution
A recording apparatus with a medium receiving tray featuring a pair of projecting sections and a deformation restricting section that supports the paper between these sections, preventing deformation and damage from weight differences between papers of varying sizes, and a switchable second receiving section that adjusts to accommodate curled papers by receiving them closer to the discharge unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single stacking-position changing member is provided on the center section of the medium receiving tray, then the leading edge of curled paper can be supported before curling occurs, but the paper bundle may be pushed against the member due to weight, causing bending or scratching
Solution Approach 1:
The single center stacking-position changing member is divided into multiple supporting members distributed across the width of the medium receiving tray. This segmentation allows the paper bundle weight to be distributed across multiple contact points rather than concentrated on one point, preventing paper bending and scratching while still supporting the leading edge to prevent curling.
Solution Approach 2:
Supporting members are strategically positioned at different locations (center and both ends) of the medium receiving tray based on local needs. The center supporting member addresses curling at the leading edge, while the end supporting members prevent paper damage from weight concentration, creating localized solutions for different problems.
2Object-affected harmful factors
If the medium receiving tray is designed to support paper at multiple points, then paper bending is reduced, but the ability to accommodate papers of different sizes is limited
Solution Approach 1:
The supporting members are designed with dual functionality: they serve as stacking-position changing members to prevent curling when paper is discharged, and simultaneously act as deformation restricting members to prevent bending when paper bundles are stacked. This multi-functionality allows the same structure to handle both curling prevention and paper damage prevention without compromising adaptability to different paper sizes.
Solution Approach 2:
The supporting members are configured to be switchable between different states (projecting and recessed). When projecting, they prevent curling of discharged paper; when recessed, they accommodate papers of different sizes without interference. This dynamic adjustment allows the system to adapt to different operating conditions and paper sizes.
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
Ensures appropriate stacking of curled papers and reduces damage from weight differences between papers of different sizes, enhancing the stacking process and preventing bending or scratching.
Implementation Method 1
The fiber on the liquid-ejected surface of the paper is expanded due to moisture
Data Source
AI summary
Provided are a recording apparatus, when a medium is discharged from a recording apparatus main body, which can achieve both of appropriate mounting of a medium in which the leading edge thereof is curled on a medium receiving tray, and reduction of damage to a medium when mediums of different sizes are mixed on the medium receiving tray.