http://www.engadget.com/2005/09/22/epsons-e-ink-rfid-tags/ Engadget Comments for Epson's E-ink RFID tags http://www.engadget.com/media/feedlogo.gif http://www.engadget.com en-us Copyright 2012 Weblogs, Inc. The contents of this feed are available for non-commercial use only. Blogsmith http://www.blogsmith.com/http://www.engadget.com/2005/09/22/epsons-e-ink-rfid-tags/http://www.engadget.com/2005/09/22/epsons-e-ink-rfid-tags/
there is another company who owns the patent to print low cost RFID, InkSure. Read more here if interested:
http://www.techwear-weblog.com/50226711/rfid_intermediary.php

Michael]]>Dec 19th 2005 2:37AMhttp://www.engadget.com/2005/09/22/epsons-e-ink-rfid-tags/http://www.engadget.com/2005/09/22/epsons-e-ink-rfid-tags/
I used to work in the lab that invented E-ink. Electrophoretic basically refers to the fact that it's an electric field that is changing the color of the pixels in the display. What's going on is that there are tiny charged white particles, and they are moving toward or away from the surface of the display through a thick, opaque oil. Because they are being pushed by an electric field, they are being "electrophoresed". When they are at the top, they show through and the pixel is white. When they are at the back, effectively behind the oil, the display shows black (or whatever color the oil happens to be. originally, it happened to be closer to blue.) A nice side-effect of this is that once the particles have moved to the front or the back, they stay there, no need to use any more electricity, unlike an LCD. This makes E-ink displays use really low amounts of energy. Which must make it a good match for RFID because RFID tags only get very intermittent power from the activating coil.]]>Dec 19th 2005 2:37AMhttp://www.engadget.com/2005/09/22/epsons-e-ink-rfid-tags/http://www.engadget.com/2005/09/22/epsons-e-ink-rfid-tags/Dec 19th 2005 2:37AMhttp://www.engadget.com/2005/09/22/epsons-e-ink-rfid-tags/http://www.engadget.com/2005/09/22/epsons-e-ink-rfid-tags/
But, the display is image stable, and reflective, so unlike an LCD, OLED, PLASMA, or just about anyother display technology out there, it only uses electricity when it switches. And Epson is able to use the power in the RFID field to not only figure out what the update should be but also to update the display]]>Dec 19th 2005 2:37AM