Roll Medium Cassette With Self-Adjusting Supporter
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Solution Overview
Problem
Existing medium cassettes face difficulties in replacing roll media due to the need for adjusting the position of the roll sheet, which can lead to floating issues when the roll medium's stiffness is high and its weight becomes lighter during use.
Innovation Solution
A medium cassette design that supports the roll medium with rollers on both sides, ensuring the continuous medium unrolls away from the roll medium and passes through a passage formed below the most downstream support position, preventing curvature and floating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the roll medium is supported by a bearing requiring position adjustment, then the roll medium can be stably supported, but the replacement operation becomes troublesome and time-consuming
Solution Approach 1:
The supporter is designed to automatically grasp and support the roll medium without requiring manual position adjustment. The support structure self-adjusts to accommodate the roll medium, eliminating the need for operator intervention in positioning while maintaining stable support throughout operation.
2Ease of operation
If the continuous medium is unrolled in a position higher than the support positions, then the replacement operation is facilitated, but the roll medium may float and separate from the supporter when stiffness is high and weight decreases
Solution Approach 1:
The passage is positioned in the vertical dimension below the support positions rather than horizontally adjacent to them. This vertical arrangement allows the continuous medium to pass through underneath the roll medium without interfering with the support contact points, preventing floating while maintaining ease of replacement operation.
3Productivity
If the continuous medium passes above the support position, then the medium can be easily conveyed, but the medium forms curved portions in opposite direction to curl direction
Solution Approach 1:
The passage acts as an intermediary element that guides the continuous medium through a controlled path below the support position. This intermediary structure prevents the medium from forming unwanted curved portions by providing a defined trajectory that maintains proper alignment and tension throughout the conveying process.
Data Source
AI summary
A roll medium is accommodated in a medium cassette. The roll medium has a configuration where a continuous medium is rolled in a roll shape. The roll medium rotates in a direction that the roll medium is unrolled as the continuous medium unrolled from the roll medium is conveyed in a conveying direction away from the roll medium. The medium case includes a supporter which rotatably supports the roll medium in contact with an outer peripheral surface of a lower part of the roll medium in at least one support position on each of both sides between which a lower end of the roll medium is sandwiched, and a passage through which the continuous medium unrolled from the roll medium passes. The passage is formed below at least the support position located on a most downstream side with respect to the conveying direction.