Processing Tray Pressing Control for Media End Alignment
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Solution Overview
Problem
Existing post-processing devices experience alignment deviation when a new medium is transported onto a tray with existing media, due to the transport unit separating from the medium, causing misalignment of the downstream end.
Innovation Solution
A post-processing device with a pressing unit that presses media on the tray and a control unit to manage the pressing unit's position, ensuring alignment by pressing and releasing the media before and after transport, respectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the transport unit transports a newly placed medium on the processing tray while placed media are already present, then the transport function is improved, but alignment deviation occurs at separation
Solution Approach 1:
The pressing unit presses the placed media against the processing tray before the transport unit separates from the transport medium. This preliminary pressing action stabilizes the placed media in advance, preventing alignment deviation when the transport unit separates, thus resolving the contradiction between maintaining transport function and ensuring alignment accuracy.
2Force
If the transport unit uses high friction contact to increase transport force, then transport capability is improved, but alignment stability deteriorates during separation
Solution Approach 1:
The pressing unit applies a pressing force to counteract the potential alignment deviation that will occur when the high-friction transport unit separates from the transport medium. By pressing the placed media against the processing tray in advance, the system prepares for and prevents the harmful effect of alignment instability during separation, thus resolving the contradiction between transport force and alignment stability.
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 accurate alignment of media ends by stabilizing the media during transport, preventing misalignment issues when new media are added to a tray with existing media.
Implementation Method 1
a paddle blade with high friction is adopted, and thus a transport force for transporting the medium in the transport direction can be increased
Implementation Method 2
the transport unit including a paddle blade with high friction is adopted, and thus a transport force for transporting the medium in the transport direction can be increased
Data Source
AI summary
A transport unit transports a transport medium after the transport medium is newly placed as an uppermost medium in a state in which one or a plurality of placed media are already placed in a processing tray. At this state, at least one of the placed media placed on the processing tray is pressed by a pressing unit at a pressing position. After the transport unit is separated away from the transport medium, the pressing unit can move from the pressing position to a retraction position.