Heat sensitive paint
Posted: Sat Nov 18, 2017 9:23 am
After chatting with Keith on if it were possible to use heat sensitive paint for a mechanical sstv screen i have found my ruler that has the heat sensitive paint .
Now I don't have a IR laser handy to try but i did have a copper American coin and a way of heating it with a soldering iron for a sec.
The experiment must show that the coins area shows up and the paint around it stays at room temperature showing a clear out line of the coin ...the paint does change shade depending on temperature which here on this go its only really 2 shades due to this primitive test .
I did notice a very ruff outline of Abraham lincoln's head out line in one go .
With the correct IR laser power and this stuff painted on screen might be a goer ...unlike glow paint the image does not seem to blur as if fades .
BTW i tried an unused glow paint tin and put my soldering iron tip close to it and the effect of the extra heat on the charged paint area was a brighter area not a decrease in Phosphorescence so there must be some difference to IR radiation or heat really to different glow paint types ...
The phone cases here would be a good cheap screen for experiments my only problem with the idea is fading the image does hang around longer than glow paint unless you can cool the area perhaps great for 72 sec b/w or the longer SSTV or fax line rates....
Now I don't have a IR laser handy to try but i did have a copper American coin and a way of heating it with a soldering iron for a sec.
The experiment must show that the coins area shows up and the paint around it stays at room temperature showing a clear out line of the coin ...the paint does change shade depending on temperature which here on this go its only really 2 shades due to this primitive test .
I did notice a very ruff outline of Abraham lincoln's head out line in one go .
With the correct IR laser power and this stuff painted on screen might be a goer ...unlike glow paint the image does not seem to blur as if fades .
BTW i tried an unused glow paint tin and put my soldering iron tip close to it and the effect of the extra heat on the charged paint area was a brighter area not a decrease in Phosphorescence so there must be some difference to IR radiation or heat really to different glow paint types ...
The phone cases here would be a good cheap screen for experiments my only problem with the idea is fading the image does hang around longer than glow paint unless you can cool the area perhaps great for 72 sec b/w or the longer SSTV or fax line rates....