RFID Printer Speed Control via Encoding Position Feedback
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Solution Overview
Problem
Existing RFID printers face limitations in printing speed and success rate due to the need to slow down or stop the media to ensure complete encoding of RFID inlays, which affects the efficiency of the encoding process.
Innovation Solution
The method involves determining a slow-down position and an encoding complete position along the media moving direction, and an encoding window for each label, to dynamically adjust the printing speed based on the encoding process's progress, ensuring completion before moving past the encoding area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the printing speed is maintained at high speed throughout the encoding process, then productivity is improved, but the encoding success rate deteriorates because the label may move past the encoding area before encoding is complete
Solution Approach 1:
The patent applies dynamics by making the printing speed adjustable rather than fixed. The system dynamically changes the media transport speed based on real-time encoding progress. When encoding is progressing well, the media moves at higher speed to maintain productivity. When encoding approaches completion or lags behind, the speed is reduced to ensure the label remains in the encoding area long enough for successful encoding, thus resolving the contradiction between high productivity and high reliability
Solution Approach 2:
The system implements feedback control by continuously monitoring the encoding progress and using this information to adjust the printing speed. The controller receives feedback on whether encoding is complete or in progress, and automatically adjusts the media transport speed accordingly. This closed-loop control ensures that the printing speed is optimized to maintain both high productivity and high encoding success rate
2Reliability
If the printing speed is reduced to ensure encoding completion, then the encoding success rate is improved, but the overall productivity deteriorates due to slower processing
Solution Approach 1:
The patent applies parameter changes by adjusting the printing speed parameter based on encoding progress. Rather than maintaining a constant low speed, the system changes the speed parameter dynamically - using higher speeds when encoding is ahead of schedule and lower speeds when encoding is lagging or near completion. This optimized parameter adjustment ensures high encoding success rates while minimizing the impact on overall productivity
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 approach allows for improved printing speed while maintaining a high success rate for encoding RFID labels, as the printing speed is adjusted to ensure the encoding process is completed before the label moves past the encoding area.
Implementation Method 1
an RFID antenna...configured to transmit signals to encode the at least one RFID inlay
Data Source
AI summary
Systems and methods for encoding radio frequency identification (RFID) labels are provided. The method includes, but not limited to: determining a slow-down position, an encoding complete position, and an encoding window for each label; determining if the encoding complete position is positioned on a front side of the slow-down position when viewed from the media moving direction; in an instance in which the encoding complete position is positioned on the front side of the slow-down position when viewed from the media moving direction, causing the media to reduce the printing speed when the trailing edge of the encoding window reaches the slow-down position; and in an instance in which the encoding complete position is positioned on a back side of the slow-down position when viewed from the media moving direction, causing the media to maintain the printing speed at the predetermined printing speed.