Rotatable Peel Bar for Self-Stripping Label Printers
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Solution Overview
Problem
Prior label printers with self-strip modules lack flexibility, as they either require external modules or integrate self-strip functionality that restricts media routing to a tear bar, making them less convenient for applications needing both self-stripping and tear bar functionality.
Innovation Solution
A self-strip media module integrated within the printer, featuring a rotatable peel bar that allows media to be fed over and around the platen roller, enabling self-stripping while maintaining the option to route the liner to a tear bar, with the peel bar's length and friction coefficients optimized for effective label separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an external self-strip module is attached to the printer, then self-stripping functionality is added, but device complexity increases and flexibility is reduced
Solution Approach 1:
The self-strip module is merged with the printer by integrating the peel bar into the existing media path. The peel bar is positioned to work with the platen roller and media roll, combining self-stripping capability with the printer's native structure rather than using a separate external module.
Solution Approach 2:
The integrated self-strip module maintains flexibility by allowing the media path to be configured for different functions. The peel bar can be positioned to enable self-stripping while the media can still be routed to a tear bar when self-stripping is not needed, providing multi-functional capability.
2Adaptability or versatility
If the self-strip module is integrated into the printer, then flexibility is improved, but media routing flexibility to tear bar is restricted
Solution Approach 1:
The system provides dynamic configurability where the media path can be adjusted based on the application. The peel bar position and media routing can be changed to accommodate different operational modes, allowing users to switch between self-stripping and tear bar configurations as needed.
Solution Approach 2:
The integrated design incorporates multiple functions within a single system. The media path is designed to support both self-stripping operation with the peel bar and traditional tear bar operation, allowing the same printer to handle different label processing requirements without sacrificing either function.
3Manufacturing precision
If the peel bar length is increased to match the platen roller length, then label separation effectiveness is improved, but device complexity increases
Solution Approach 1:
The peel bar is designed with specific local characteristics - its length matches the platen roller length to ensure adequate contact and separation effectiveness at the critical separation zone. This localized optimization ensures proper label release without requiring complex adjustments elsewhere in the system.
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
The integrated self-strip media module enhances flexibility and convenience by allowing self-stripping and liner routing within the printer, improving usability and efficiency compared to prior art solutions.
Implementation Method 1
The media and the platen roller have a coefficient of friction μ3 therein between. The coefficient of friction μ3 is greater than μ1 and greater than μ2.
Data Source
AI summary
A self-strip media module in a printer is provided. The self-strip media module includes a peel bar having a length at least as great as the length of a platen roller and being rotatably engaged at the ends of the platen roller. The media includes a series of labels adhered to a liner. The media is fed over the peel bar and between the platen roller and a mid-chassis. The peel bar may be rotated towards the discharge side of the platen roller, pulling the media over the platen roller and over itself. A thermal print head is lowered onto the media over the platen roller and to print on the labels. The printer advances the media over the peel bar. The labels are stripped from the liner when the media advances around the peel bar.