Sheet Feeding Roller Retraction Mechanism
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Solution Overview
Problem
Existing sheet feeding apparatuses face issues with manual operation leading to contamination of rollers, reducing friction and potentially causing mechanical failures due to user contact during the manual movement of delivery rollers between feeding and retracting positions.
Innovation Solution
A sheet feeding apparatus with a moving mechanism that automatically moves the feeding roller to a retracting position before the storage and feeding parts are withdrawn from the enclosure, preventing user contact and maintaining roller cleanliness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the delivery roller is manually moved from the feeding position to the retracting position, then the sheet storage function is improved, but the roller may be contaminated by user contact causing sheet feeding failure
Solution Approach 1:
The moving mechanism automatically moves the feeding roller to the retracting position before the storage case is removed from the enclosure. This preliminary action prevents user contact with the roller during storage operations, eliminating contamination risk while maintaining the sheet storage function.
Solution Approach 2:
The system performs the roller retraction operation automatically through the moving mechanism without requiring manual user intervention. The storage case itself triggers the retraction sequence, making the system self-serving and eliminating the harmful effect of user contact.
2Ease of operation
If the delivery roller is manually moved to the retracting position, then the storage operation is facilitated, but mechanical components may be broken during manual operation
Solution Approach 1:
The moving mechanism automatically handles the roller retraction without requiring manual operation. The storage case removal process itself triggers the automated retraction sequence, eliminating mechanical stress from manual handling while facilitating storage operations.
Solution Approach 2:
The roller is retracted to the safe position before the storage case is fully removed. This preliminary retraction action prevents potential mechanical breakage that could occur during manual operation, while still enabling smooth storage case removal.
3Speed
If the feeding roller remains at the feeding position during storage case removal, then quick access is maintained, but user contact contaminates the roller reducing friction coefficient
Solution Approach 1:
The moving mechanism retracts the feeding roller to the safe position before the storage case is removed. This preliminary action prevents contamination while the system quickly returns to the feeding position after storage, maintaining overall operational speed.
Solution Approach 2:
The system automatically manages the roller position transitions without user intervention. The roller retracts during storage and automatically returns to the feeding position afterward, preventing contamination while maintaining quick access capability.
Data Source
AI summary
A sheet feeding apparatus includes: a storage part that stores a sheet, and a feeding part that has a feeding roller for feeding the sheet. The storage part and the feeding part are configured to be integrally inserted/withdrawn into/from an apparatus enclosure. The feeding roller is moved from a feeding position to a retracting position before the storage part and the feeding part are withdrawn from the enclosure.