| ▲ | 1e1a 2 hours ago | |
There's also this which works using a purely physical process: https://www.koehlerpaper.com/en/products/Thermal-paper/TH_Bl... | ||
| ▲ | thomascountz 19 minutes ago | parent [-] | |
Check out some results here: https://thermalprintcameras.wordpress.com/blue4est-paper/ | ||