Method and system for forming RF reflective pathways
First Claim
Patent Images
1. A system for producing radio frequency tags comprising:
- a conveyor for moving a substrate;
a thermal print head, the conveyor moving the substrate past the thermal print head, the thermal print head being selectively actuatable to heat a desired pattern on the substrate;
means on the substrate for reacting with the heat source to form RF reflective pathways, the means including a heat sensitive composition on the substrate.
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Abstract
The present invention provides for a system and two methods for forming RF reflective pathways. These pathways can form a radio frequency identification tag. A first method uses a thermal transfer ribbon, coated with a conductive material that is engaged with a receiver substrate. A thermal print head will heat a composition on the thermal transfer ribbon in order to transfer it to the receiver substrate. This transfer composition forms the RF reflective pathway. In an alternative method, a receiver substrate is heated in order to react conductive material thereon. This receiver substrate is also heated by a thermal print head to form a RF reflective pathway.
99 Citations
6 Claims
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1. A system for producing radio frequency tags comprising:
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a conveyor for moving a substrate;
a thermal print head, the conveyor moving the substrate past the thermal print head, the thermal print head being selectively actuatable to heat a desired pattern on the substrate;
means on the substrate for reacting with the heat source to form RF reflective pathways, the means including a heat sensitive composition on the substrate. - View Dependent Claims (2, 3, 4)
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5. A radio frequency tag produced according to a method of forming radio frequency tags, comprising the steps of:
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providing a thermal transfer ribbon;
moving the thermal transfer ribbon past a heat source;
engaging the thermal transfer ribbon with a receiver substrate as the thermal transfer ribbon moves past the heat source;
selectively heating portions of the thermal transfer ribbon with the heat source; and
transferring a composition from the thermal transfer ribbon to the receiver substrate, the selective heating enabling a desired resonating pattern of the composition to be transferred to the receiver substrate.
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6. A radio frequency tag producing according to a method of forming radio frequency tags, comprising the steps of:
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providing a substrate coated with reactive material;
moving the substrate past a heat source;
selectively heating portions of the substrate with the heat source; and
developing the reactive material on the substrate during exposure to heat from the heat source to develop a desired resonating pattern on the substrate, the reactive material forming a RF reflective material.
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Specification