Feeder Pressing Section Prevents Media Flexure
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Solution Overview
Problem
Conventional feeders create spaces ahead of the leading edge of media during feeding, leading to media flexure and potential jams due to the timing of pressing the medium against the feed roller.
Innovation Solution
A feeder configuration that includes a pressing section to apply force in the stacking direction after the leading edge abuts an abutment section during feeding, supported by a separate support section that moves to ensure contact with the feed roller, with different driving sources for the feed roller and support section, allowing independent operation and reducing jam occurrence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the medium is pressed against the feed roller at the conventional timing, then the feeding process can be initiated, but a space is created ahead of the leading edge of the medium causing flexure and potential jams
Solution Approach 1:
The abutment section is positioned to make the leading edge of the medium abut there first, before the pressing section applies pressure. This preliminary positioning action ensures the leading edge is properly aligned and supported before the feeding force is applied, preventing space creation and medium flexure during the feeding process.
2Device complexity
If the feed roller and support section share the same driving source, then the device complexity is reduced, but the rotation of the feed roller and movement of the support section cannot be independently controlled
Solution Approach 1:
The driving system is segmented into separate driving sources for the feed roller and the support section. This segmentation allows independent control of each component, enabling the support section to move at different speeds and timings relative to the feed roller rotation, which is crucial for preventing medium flexure and jams.
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 prevents space creation ahead of the media, reducing the risk of jams during feeding and enabling efficient media transport without separate driving sources for transportation rollers.
Implementation Method 1
a feed roller that feeds the medium set in the setting section in a feeding direction
Implementation Method 2
a pressing section that is configured to press the medium set in the setting section against the feed roller to apply a force in a stacking direction of the medium
Data Source
AI summary
A feeder includes a pressing section that presses a medium after a feeding force is applied on the medium in a direction in which a leading edge of the medium set in a setting section in a feeding direction abuts on an abutment section during feeding of the media by a feed roller.