4 ms·

If you wanted to take this a little further, you could cover the "display" with heat erasable ink like is used in a Pilot Frixion pens. This ink is interesting

If you wanted to take this a little further, you could cover the "display" with heat erasable ink like is used in a Pilot Frixion pens. This ink is interesting in that it fades when heated (60 C), but darkens when cooled (-10 C). In between those temperatures it is stable. Thus you could have one loop that is continuously reused. Not sure how many cycles you can get before the ink degrades.

gmueckl 1y ago
I like that idea. The printing process should probably be inverted: cool the paper as a whole to darken the whole sheet amd use a small heating coil to erase.
afandian 1y ago
Or thermochromic film https://en.wikipedia.org/wiki/Thermochromism https://en.wikipedia.org/wiki/Thermochromism