Tag-Label Device Tape Slack Control for RFID Integrity
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Solution Overview
Problem
Existing tag-label producing devices face issues with tape slack in the feed path, which can lead to print fading and impairment of RFID circuit elements during the production of RFID labels, necessitating a solution to reduce slack while preventing damage to the RFID circuit elements.
Innovation Solution
The device incorporates a control system with distinct modes for managing tape slack reduction, including specific drive forces and feeding directions for tag tape and ordinary tape, ensuring the integrity of RFID circuit elements by minimizing tape feeding impact on their placement and preventing cutting during the label production process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If tape slack reduction function is implemented by feeding the tape, then tape slack is reduced and print fading is prevented, but the RFID circuit elements may be cut due to improper feed position
Solution Approach 1:
The patent applies different feed control strategies for different sections of the tape. The feed roller feeds the tape in a first region, while the second region containing RFID circuit elements is held at a fixed position relative to the cutting blade. This local differentiation allows slack reduction in the feed path without moving the sensitive RFID elements, thus preventing both print fading and circuit element damage.
Solution Approach 2:
The tape is divided into multiple regions: a first region that is fed by the feed roller for slack reduction, and a second region containing RFID circuit elements that maintains a fixed position. This segmentation allows independent control of each region, enabling slack reduction without compromising the position of RFID elements during cutting.
2Ease of operation
If the cartridge is detached while labels are being produced, then cartridge replacement is enabled, but tape slack develops causing print fading
Solution Approach 1:
The patent implements a preliminary feeding action when the cartridge is reattached. The feed roller feeds the tape by a predetermined distance before the cutting blade cuts the tape. This preliminary action compensates for the slack that develops when the cartridge is detached, ensuring that the tape is at the correct position for cutting and preventing print fading without requiring the cartridge to remain attached during the entire production process.
3Reliability
If tape is fed to reduce slack, then print quality improves, but the feeding direction and force must be carefully controlled to prevent cutting RFID circuit elements
Solution Approach 1:
The patent applies different feed control strategies for different sections of the tape. The feed roller feeds the tape in a first region, while the second region containing RFID circuit elements is held at a fixed position relative to the cutting blade. This local differentiation allows slack reduction in the feed path without moving the sensitive RFID elements, thus preventing both print fading and circuit element damage.
Solution Approach 2:
The patent introduces an intermediary mechanism (the feed roller with controlled feeding) between the tape supply and the cutting blade. This intermediary controls the tape position in the first region while maintaining a fixed relationship with the RFID elements in the second region, thereby mediating between the need for slack reduction and the need to protect RFID elements from cutting.
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 effectively reduces tape slack, preventing print fading and ensuring the soundness of RFID circuit elements by tailoring the tape feed management to each type of tape, thereby enhancing the reliability of RFID label production.
Implementation Method 1
a feed roller for feeding the tape in a tape length direction
Implementation Method 2
a bonding unit for bonding the print-receiving tape and the tag tape together
Data Source
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AI summary
The tag-label producing device (1) includes: a cartridge holder (6) for selectively installing a first roll (102) and a first roll (102-0); a tape feed roller (27), a ribbon take-up roller (106), and a switching mechanism (193) that impart a drive force in the tape length direction to this tape; an antenna (LC) for performing transmission/reception of information through wireless communication to/from an IC circuit part (151) of an RFID circuit element (To), upon the installation of the first roll (102); a cartridge sensor (191) for detecting which one of the first rolls (102 and 102-0) has been installed; and a control circuit (110) including a tag tape mode and an ordinary-tape mode, for controlling a drive unit by switching between the modes.