Re:HP Labs developed a new rewritable printing technology
by userbinator on Saturday April 15, 2017 @10:38PM
(#14124059)
“Since the only way to change information on the IonTouch cards is via our IonTouch imagers, that also adds another layer of protection, making the cards very secure, too.
If it's based on the same electrophoretic principle as regular EPDs, which seems to be the case from reading their description, then they will be affected by strong electric fields.
The concept itself is not particularly novel (this is just the electrophoretic sheet inside an EPD, with the electrodes in a separate writing head), but I think this may be the first time it's been productised for this particular application:
If it's based on the same electrophoretic principle as regular EPDs, which seems to be the case from reading their description, then they will be affected by strong electric fields.
The concept itself is not particularly novel (this is just the electrophoretic sheet inside an EPD, with the electrodes in a separate writing head), but I think this may be the first time it's been productised for this particular application:
https://en.wikipedia.org/wiki/Gyricon