Handheld Printer Internal Antenna External Scanner
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Solution Overview
Problem
Existing portable printers lack the capability to read and write RFID transponders both internally and externally, requiring separate and costly replacement of RFID antennas and print heads when either becomes worn or damaged.
Innovation Solution
A hand-held portable printer with an internal RFID antenna and a removable external RFID scanner, allowing for RFID communication with transponders both inside and outside the printer, and enabling the printer to be retrofitted for external RFID reading and writing without interfering with label application or printer operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an internal RFID antenna is integrated into the printer housing, then RFID communication with internal transponders is enabled, but the printer cannot read/write to external transponders without adding external components
Solution Approach 1:
The RFID system is segmented into internal and external components. The internal RFID antenna is integrated into the printer housing for reading transponders on labels, while a separate external RFID scanner with its own antenna can be removably coupled to the printer for reading external transponders. This segmentation allows the printer to achieve versatile RFID communication capability without permanently increasing device complexity.
Solution Approach 2:
The external RFID scanner is designed as a universal attachment that can be removably coupled to the printer housing. When coupled, it enables the printer to perform both internal and external RFID reading/writing operations. This multi-functional approach allows a single device to handle multiple RFID scenarios without requiring separate dedicated devices.
2Adaptability or versatility
If the RFID scanner is permanently integrated into the printer, then external RFID reading/writing is always available, but the printer becomes more expensive and less flexible for users who don't need this feature
Solution Approach 1:
The RFID scanner attachment is designed with dynamic coupling and decoupling capabilities. It can be removably coupled to the printer housing when external RFID capability is needed, and easily removed when not needed. This dynamic configuration allows the system to adapt to different user needs, enabling manufacturers to produce base printers without the expensive external scanner component, while still offering the capability to those who require it.
Solution Approach 2:
The external RFID scanner acts as an intermediary component between the printer and external transponders. It couples to the printer housing through a removable interface and provides the additional external RFID reading/writing capability. This intermediary approach allows the base printer to remain simple and cost-effective, while the optional scanner provides enhanced functionality only when needed.
3Productivity
If the external RFID antenna is placed close to the print head, then RFID reading efficiency is improved, but the antenna may interfere with label application or printer operation
Solution Approach 1:
The external RFID antenna is positioned in a specific location on the printer housing that optimizes RFID reading efficiency for external transponders while avoiding interference with label application operations. The antenna is placed in a region where it can effectively communicate with external transponders but does not physically obstruct the print head or label application path. This localized optimization allows both RFID efficiency and ease of operation to be maintained.
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
Enables efficient and cost-effective RFID reading and writing to both internal and external transponders, with the ability to selectively use the RFID scanner, reducing the need for frequent replacement of components and enhancing operational flexibility.
Implementation Method 1
an internal RFID antenna capable of communicating by radio frequency with transponders on the web
Implementation Method 2
an external RFID antenna on the scanner housing, wherein the internal RFID antenna and the external RFID antenna are adapted to be coupled to the RFID reader/writer
Data Source
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AI summary
There is disclosed a hand-held portable printer (20) having an internal antenna (91), convertible to an RFID printer capable to receiving RFID data from a scanner (21) coupled to the printer. The printer preferably shares a common RFID reader/writer with an RFID scanner. The scanner has an external antenna (153) which can be coupled to and preferably attached to the printer (20). The scanner preferably includes the RFID reader/writer (150). The internal antenna (9) is close to but separate from the printer's print head (33) and the internal antenna is movable as a unit with the print head.