Post-processing Tray Load Member for Sheet Rebound Control
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Solution Overview
Problem
Existing post-processing devices face misalignment issues due to rebounding sheets at the receiving plate in processing trays, particularly when dealing with media that have increased frictional forces after inkjet image formation, affecting transportation performance.
Innovation Solution
The implementation of a post-processing device with a processing tray equipped with a load applying section, such as a load member or a sucking section, to stabilize the medium during transportation and alignment, reducing potential movement and misalignment by applying a controlled load to hinder movement in the direction opposite to the transport direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a reinforcing sheet is provided on an elastic sheet to improve sheet-transporting performance, then the elastic sheet can draw sheets with increased frictional force, but the drawn sheet rebounds at the receiving plate position causing misalignment
Solution Approach 1:
The load applying section applies a load to the medium in advance during transportation to prevent rebound movement. By counteracting the elastic recovery force before the sheet reaches the receiving plate, the system prevents misalignment from occurring in the first place, rather than correcting it after the fact.
Solution Approach 2:
The system changes the physical state of the medium by applying a controlled load that affects the elastic sheet's deformation characteristics. This load application modifies the parameter of sheet stiffness or deformation control, allowing the sheet to be drawn without excessive rebound while maintaining alignment.
2Force
If the elastic sheet is reinforced to enable drawing of sheets with increased frictional force, then transporting performance is improved, but sheet rebound causes misalignment at receiving plate
Solution Approach 1:
The load applying section applies a counteracting force to the medium during transportation to prevent the rebound effect. This preliminary anti-action compensates for the elastic recovery that would otherwise cause misalignment, allowing the system to handle high-friction sheets without sacrificing positioning accuracy.
Solution Approach 2:
By applying a load to the medium, the system changes the mechanical parameters of the sheet during transport. This load modification allows the elastic sheet to maintain sufficient grip on high-friction media while controlling the sheet's elastic recovery to prevent rebound and misalignment.
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
This configuration effectively reduces misalignment by stabilizing the medium during alignment and transport, ensuring accurate positioning and reducing the likelihood of bending-induced movement, thereby enhancing the overall transportation and alignment process.
Implementation Method 1
a load applying section that applies a load when the medium on the processing tray moves in a second direction opposite to the first direction
Data Source
AI summary
An end unit includes: a processing tray including an upper surface on which a medium subjected to recording by a recording unit is mounted; a first paddle and a second paddle that transport, in direction +A, the medium mounted on the upper surface; an alignment section that aligns an edge portion of the medium, which was transported in direction +A by the first paddle and the second paddle, in direction +A; a post-processing section that performs post-processing for the medium aligned by the alignment section; and a load member that applies a load when the medium on the processing tray moves in direction −A opposite to direction +A.