Retard Roller Replacement Mechanism for Printers
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Solution Overview
Problem
The existing sheet-supply devices require cumbersome manual intervention to replace the retard roller, as users need to insert their hand or finger to slide the roller along the shaft, making the process burdensome.
Innovation Solution
A recording apparatus with a roller that is disengageable from a shaft member by moving towards one end, utilizing a roller moving mechanism and a movement inhibiting and allowing member to facilitate easy replacement by shifting the chute's position, allowing the roller to be moved from a set position to a replacement position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the roller is fixed on the shaft member at a set position, then the roller can perform its conveying function, but the roller cannot be easily removed or replaced
Solution Approach 1:
The roller positioning system transitions from a static fixed state to a dynamic controllable state. The roller can be moved along the shaft member between a set position (for operation) and a removal position (for replacement) based on the position of the movement inhibiting and allowing member, enabling easy maintenance while maintaining operational stability
Solution Approach 2:
The movement inhibiting and allowing member acts as an intermediary mechanism between the roller and the shaft member. By positioning this member at different locations along the shaft, the system controls whether the roller is inhibited from moving or allowed to move freely, facilitating easy roller replacement without direct manual intervention
2Ease of operation
If manual intervention is required to slide the roller along the shaft, then the roller can be positioned, but the operation becomes burdensome
Solution Approach 1:
The roller positioning system performs self-service by using the movement inhibiting and allowing member to automatically move the roller along the shaft member. When the inhibiting and allowing member is repositioned, it releases the roller or actively moves it to the desired position, eliminating the need for users to manually slide the roller with their hands
Solution Approach 2:
The movement inhibiting and allowing member is pre-positioned at specific locations along the shaft member. When replacement is needed, the member is simply repositioned to a different location, which automatically triggers the roller to move to the appropriate position, performing the positioning action in advance and eliminating manual intervention
Data Source
AI summary
A recording apparatus including: a roller disposed at a set position and configured to convey a recording medium; a shaft member configured to support the roller located at the set position, wherein the roller is disengageable from the shaft member by moving in a direction toward one of opposite ends of the shaft member; a roller moving mechanism configured to move the roller in the direction toward the one end by applying a force to the roller in the direction toward the one end; and a movement inhibiting and allowing member configured to: inhibit the roller from moving in the direction toward the one end by being positioned at a first position at which the roller is positioned where the roller has been moved in the direction toward the one end; and allow the roller to move in the direction toward the one end by moving from the first position to a second position different from the first position.