Thermal Media Internal RF Matrix UV Protection
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Solution Overview
Problem
Current thermal sensitive media used in RFID tags and labels cannot withstand lengthy UV exposure without discoloring, and existing printing methods are impractical for bulk encoding, requiring individual items to be printed and processed through a printer, which is inefficient for bulk packaging and handling.
Innovation Solution
Thermal sensitive media with an internal RF matrix that allows UV coating and uses micro heating elements driven by RF power to create human-readable images without a print mechanism, protected by an ultraviolet protective coating to prevent unintended color change and enable bulk encoding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If thermal sensitive media is used in RFID tags, then human readable information can be displayed, but the media turns black or discolors when exposed to UV energy
Solution Approach 1:
The media is divided into multiple functional layers: a UV-resistant base layer and a thermally sensitive record layer. This segmentation allows each layer to perform its specific function independently - the base layer blocks UV damage while the record layer responds to thermal energy for image creation.
Solution Approach 2:
A UV-protective coating layer is introduced as an intermediary between the UV environment and the thermally sensitive record layer. This coating acts as a mediator that absorbs or reflects UV radiation, preventing it from reaching and damaging the underlying thermal sensitive materials.
2Loss of information
If a print mechanism is used to encode RFID tags, then human readable images can be printed on media, but individual items must be processed through a printer which is inefficient for bulk encoding
Solution Approach 1:
The RFID inlay itself performs the printing function through its integrated micro heating elements. When RF power is applied, these elements self-heat and directly create images on the thermally sensitive record layer without requiring external printing equipment, enabling bulk encoding of entire cartons simultaneously.
Solution Approach 2:
The patent combines multiple functions into a single integrated system: the RFID inlay contains both the electronic circuitry for identification and the micro heating elements for image creation. This merging of RFID encoding and thermal printing functions eliminates the need for separate printing equipment and enables simultaneous bulk processing.
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 UV protection of thermal layers and allows for bulk encoding of RFID tags without the need for individual printing, maintaining image integrity and efficiency in labeling and identification processes.
Implementation Method 1
a thermally sensitive record layer which forms a visually discernable colored image in response to heat or other energy
Implementation Method 2
The ultraviolet protective coating layer is such that the coating can be cured or activated with ultraviolet radiation at a wavelength outside of the known photodegradative wavelength range
Implementation Method 3
a lamination layer internal to the media layer and comprising a matrix of micro heating elements driven by radio frequency (RF) power
Data Source
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AI summary
A thermal sensitive media for use with labeling or identification methods is disclosed. The thermal sensitive media comprises a media layer (102) and a thermally sensitive record layer (104) formed upon at least one surface of the media layer. The thermally sensitive record layer forms a visually discernable colored image in response to heat. However, the colored image is subject to degradation as a result of exposure to ultraviolet radiation within a known photodegradative wavelength range. An ultraviolet protective coating layer (106) may then disposed over the thermally sensitive record layer. A lamination layer (108) is positioned internal to the media layer and comprises a matrix of micro heating elements driven by radio frequency (RF) power. The matrix of micro heating elements are arranged in a pin array to energize the micro heating elements within the laminated media structure to create a simple numeric image.