Label Printer Winding Support for Base Sheet Stability
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Solution Overview
Problem
Existing label printers face issues with base sheet deflection and improper winding when the winding amount is large, leading to potential disengagement and jamming during back feed operations.
Innovation Solution
A label printer design that includes a platen roller, thermal head, peeling bar, winding shaft, and a driven roller supported by a biased support member to stabilize the base sheet winding and prevent deflection, ensuring stable winding and feeding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the base sheet is wound around the winding shaft in a conventional label printer, then the printed label can be separated from the base sheet, but the rewound base sheet becomes deflected and cannot be wound up neatly, leading to potential disengagement and jamming
Solution Approach 1:
A support member is introduced as an intermediary component between the winding shaft and the base sheet. This support member has a contact portion that presses against the outer peripheral surface of the wound base sheet, preventing deflection during the winding process. The support member acts as a mediator that maintains the structural integrity of the wound base sheet without interfering with the core winding function.
Solution Approach 2:
The support member is designed with adjustable pressing force and contact position parameters. By changing the pressing force applied by the support member, the system can adapt to different base sheet materials, widths, and winding tensions. This parameter adjustment capability allows the system to maintain optimal winding conditions for various operating scenarios, preventing both deflection and base sheet damage.
2Reliability
If a support member is added to prevent base sheet deflection, then winding stability improves, but the device complexity increases
Solution Approach 1:
The support member is divided into functionally distinct segments: a body portion providing structural support and a contact portion specifically designed for pressing the base sheet. This segmentation allows each part to be optimized for its specific function while keeping the overall structure simple and maintainable.
Solution Approach 2:
The support member is designed with movable or adjustable characteristics, allowing it to adapt dynamically to different operating conditions. This dynamic capability enables the support member to maintain optimal contact pressure and position during the winding process without requiring complex control systems.
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
Enhances the running stability and winding properties of the base sheet, preventing deflection and ensuring smooth operation even with large winding amounts, thereby reducing the risk of jamming.
Implementation Method 1
a support member configured to pivot around an axis at a first end thereof and biased to press with a second end thereof the base sheet wound around the winding shaft
Data Source
AI summary
A label printer for printing on a label sheet that is stored in a rolled shape and includes a base sheet and a plurality of labels attached thereon, includes a platen roller configured to convey the label sheet, a head configured to print on a label of the conveyed label sheet, a peeling bar by which the printed label is peeled off from the base sheet, a winding shaft configured to rotate to wind thereon the base sheet from which the printed label has been peeled off, and a support member configured to pivot around an axis at a first end thereof and biased to press with a second end thereof the base sheet wound around the winding shaft.