| Summary: | 碩士 === 世新大學 === 圖文傳播暨數位出版學研究所(含碩專班) === 94 === The trend of applying RFID (Radio Frequency Identification) on merchandise identification has been growing. Many distributors have included this technology in their workflow. Compare to using conventional barcode, there are many advantages on using RFID tags and there is also a larger area of application. However, to put RFID technology into general practice, there are still many problems that need to be solved. One of these problems is that the production cost of RFID tags is so high that it is almost impossible to lower the workflow managing expenses.
The development of a new printing material, metallic electric conducting ink, has made it possible to produce RFID antenna with print press. The mess production of RFID antenna can be accomplished with print machines in current operation. There is no need to do changes to the machines to complete the conversion. It is a big opportunity for the print industry.
This research experiments producing RFID antennas with offset lithography and electric conducting ink. The tags are overly printed 1 to 5 levels trap on Matt Art Paper and Gloss Coated Art Paper. Various parameters of printed RFID tags, including their effective distances, are collected and analyzed.
The following results have been shown from the experiment:
1. The electric resistiveness of 5-level printed antennas are lower than 1-level printed antennas; and their electric conductivity better. The effective distances of these antennas are longer, too. The relationship of ink thickness and antenna effective distances shows a direct ratio.
2. When compare Matt Art Paper and Gloss Coated Art Paper, the antennas printed on Matt Art Paper has lower electric resistiveness and their RFID antenna effective distances longer since Matt Art Paper holds a better absorbency on ink.
3. In this experiment, we attempt to adapt density as a indicator for ink thickness. The ink thickness of offset printed materials is rather thin, so it cannot be measured with ink thickness measuring device, which is often used in print industry. In this experiment, we found that there is no obvious relationship between ink density and electric resistiveness of RFID antennas. As a result, ink density may not be a proper indicator of conductivity of RFID antennas.
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