Conveyer Guide Member Position Control for Rolled Paper Diameter Variations
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Solution Overview
Problem
In rolled paper printers, changes in the diameter of the rolled paper sheet lead to erroneous determination of conveying errors due to a fixed error area, causing potential misinterpretation of tensioner position changes.
Innovation Solution
A conveyer system comprising a supporting member, conveyance roller, guide member, urging member, and sensor, where the controller adjusts the rotation of these components to determine and maintain the target position of the guide member based on the paper roll diameter, preventing erroneous error notifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the error area is fixed in the conveyer system, then the structure is simple and easy to control, but conveying errors are wrongly determined when the diameter of the rolled paper sheet changes
Solution Approach 1:
The error area is made movable along the conveying direction instead of being fixed. The error area moves together with the tensioner when the target position changes due to diameter variations of the rolled paper sheet, ensuring that the error detection range remains accurate under different operating conditions
Solution Approach 2:
The position of the tensioner is detected by a sensor, and based on the detected position, the error area is positioned at an appropriate location downstream of the tensioner. This feedback mechanism ensures that the error area dynamically adapts to changes in tensioner position, preventing false error detections
2Adaptability or versatility
If the target position of the tensioner changes due to diameter variation, then the conveying route is adapted, but the fixed error area causes erroneous conveying error determination
Solution Approach 1:
The error area is configured to move along the conveying direction in response to changes in the target position of the tensioner. This dynamic adjustment ensures that the error detection range remains properly positioned even when the conveying route changes due to diameter variations
Solution Approach 2:
The sensor acts as an intermediary that detects the position of the tensioner and provides feedback information. Based on this feedback, the error area is positioned at an appropriate location downstream, ensuring accurate error detection without being affected by target position changes
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 solution effectively suppresses erroneous conveying error determinations by dynamically adjusting the permissible positions of the guide member, ensuring accurate tension control and minimizing jam occurrences and notification delays.
Implementation Method 1
The urging member 240 is configured to urge the guide member 230 in an urging direction 8C including a component in the movable direction 8B so as to apply a tension to the sheet 213
Implementation Method 2
The sensor 260 is configured to detect a position in the crossing direction of the guide member 230
Data Source
AI summary
A conveyer includes: a supporting member which supports a roll body having a sheet wound therearound; a conveyance roller which conveys the sheet; a guide member; an urging member which urges the guide member; a sensor; and a controller. The controller is configured: to determine a target position of the guide member and a permissible position in accordance with the target position; to control a rotation amount of the supporting member and/or a rotation amount of the conveyance roller; to determine whether or not a position of the guide member exceeds the permissible position; and to perform a notification of a conveying error of the sheet.