Roll Pipe Rotation Detection for Recording Medium Fixation
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Solution Overview
Problem
In image forming apparatuses, existing technologies face challenges in determining whether the rear end of a recording medium is fixed to a roll pipe, leading to issues like paper jams and incorrect detection during the rolling back process.
Innovation Solution
A recording medium conveyance apparatus is designed with a feeding unit, conveyance unit, and determination unit that includes a detection mechanism to detect the rotational operation of the roll pipe, allowing for accurate determination of the recording medium's accommodation state, including whether the rear end is fixed to the roll pipe.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the recording medium is fed continuously from the front end by rotating the roll pipe, then the recording medium can be supplied to the image forming apparatus, but the rear end of the recording medium may detach from the roll pipe causing inability to roll back
Solution Approach 1:
The determination unit performs preliminary detection of the recording medium's accommodation state before attempting to roll it back. By detecting whether the rear end is properly fixed to the roll pipe in advance, the system can prevent failed rollback operations and paper jams, ensuring reliable restoration of the recording medium.
2Ease of operation
If the recording medium is restored by reverse rotation of the roll pipe, then the recording medium can be rolled back, but erroneous detection such as paper jam detection may occur when the recording medium cannot be rolled back
Solution Approach 1:
The determination unit performs preliminary detection to identify cases where the recording medium cannot be properly restored before attempting the rollback operation. By detecting the accommodation state in advance, the system prevents erroneous paper jam detections that would occur if rollback failed, thereby improving detection accuracy and reducing false alarms.
3Productivity
If existing detection methods are used to determine accommodation state, then the system can operate, but accurate determination of whether the rear end is fixed to the roll pipe cannot be achieved
Solution Approach 1:
The determination unit provides real-time feedback on the recording medium's accommodation state by detecting whether the rear end is fixed to the roll pipe. This feedback mechanism enables the system to accurately monitor the state of the recording medium during feeding and restoration operations, improving both detection precision and operational reliability.
Data Source
AI summary
A recording medium conveyance apparatus includes a feeding unit for accommodating a roll pipe and feeding a recording medium, a conveyance unit for conveying the recording medium fed by the feeding unit, and a determination unit for determining an accommodation state of the recording medium accommodated in the feeding unit. The feeding unit includes a driving unit for rotating the roll pipe and a detection unit for detecting a rotational operation of the roll pipe. The conveyance unit, using at least two rollers, conveys or fixes the recording medium by nipping it with the rollers. The determination unit, based on the rotational operation of the roll pipe detected by the detection unit when the recording medium is fixed by the rollers, determines whether the recording medium is fixed to the roll pipe or not.