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Galvanic process for making printed conductive metal markings for chipless rfid applications

A technology of metal wires and metal ions, applied in printed circuits, printed circuit manufacturing, printing, etc., can solve the problems of using nano-particle metals, etc., and achieve the effect of low cost and high yield

Inactive Publication Date: 2009-05-27
XEROX CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also, Barnes does not mention the use of nanoparticle metal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0049] In a 10mL volumetric flask, 25mg of CuSO 4 ·5H 2 O was dissolved in deionized water and made into a 10 mL solution, the final Cu 2+ The salt concentration was 10 mM. Similarly, by dissolving 23 mg of CuNO in 10 mL of deionized water 3 , to prepare CuNO 3 10mM solution. Both solutions are pale blue.

[0050] In a 10mL volumetric flask, 7.8mg of [Cr(OAc) 2 , H 2 O] 2dissolved in deionized water, and made into a 10 mL solution, the final Cr 2+ The salt concentration was 10 mM. Similarly, by dissolving 12.3 mg of CrCl in 10 mL of deionized water 2 , to prepare CrCl 2 10mM solution. Both solutions were dark purple in color.

[0051] with Cu 2+ The saline solution (prepared as described above) filled the Dimatix printer cartridge and the lines were printed on smooth coated paper. Remove the box and replace with Cr 2+ Saline solution (prepared as above) filled a second Dimatix printer cartridge and inserted into the printer. with Cr 2+ Saline solution overpri...

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PUM

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Abstract

A process for printing a metal wire pattern on a substrate, including: printing a first salt solution including a metal ion that will undergo a reduction half-reaction; printing a second salt solution containing an oxidizing agent that will undergo an oxidation half-reaction in contact with the first salt solution, resulting in the reduction of the metal ions of the first salt solution; and allowing the first and second salt solutions to react by a galvanic reaction, causing reduced metal ions of the first salt solution to precipitate as a solid, on the substrate.

Description

technical field [0001] The present disclosure relates to a method for printing wiring patterns on substrates used as resonant antennae in chipless RFID applications, using a printing method whereby desired patterns are placed on top of each other Printing of two salt solutions triggers a spontaneous electrochemical reaction and induces precipitation and deposition of reduced metal particles at the interface of the two salt solutions. Background technique [0002] Recently, radio frequency identification (RFID) technology has gained enormous popularity as a device for storing and transmitting information. RFID technology uses a tag transponder located on an object, and a reader, also referred to herein as an interrogator, to read and identify the tag. RFID technology is broadly categorized according to the use of "active" tags or "passive" tags. Active tags have a local power source (such as a battery) so that the active tag transmits a signal to be read by the interrogator...

Claims

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Application Information

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IPC IPC(8): H05K3/10H05K3/12H05K3/18H01Q1/38
CPCH05K2203/013H05K2203/1157H05K3/12H05K3/182H05K3/125B05C5/02B41J2/01
Inventor N·乔普拉P·M·卡斯迈尔D·J·拉利斯P·F·史密斯
Owner XEROX CORP
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