qualia skrev:i was recently thinking about hacking a printer like this for a slightly different purpose, and i checked instructables to see if it was already done by someone else, this was the closest. my idea was to mount a lightscribe DVD burner laser on the printer head of a cheapish $50 printer (bought the DVD drive, not the printer yet) and link it up so that as well as depositing ink it could reduce graphite oxide film into graphene, on a glass or, (optimistically)- a cellulose acetate substrate for the purpose of making an active matrix pixel array for creating OLED displays (including the field effect transistors+capacitors for each pixel in the same process, using the semiconducting and conducting properties of the graphite oxide and graphene, respectively), the electroluminescent doped polymers could possibly be dissolved in acetone or perhaps a weaker solvent that wouldnt attack a printer cartridge too much, then printed over the transparent graphene electrodes, one for each subpixel in alternating formation according to the RGB dopants and corresponding subpixel.
the idea i had was having the printer rollers actually moving the entire printer along rack and pinion type rails on each side of the build surface, and i wasnt sure if the steppers would be powerful enough, got some heartier steppers around though, but different current ratings to most printer steppers so i'd have to make a breakout board to drive them if i had to use them for it. (which would be fairly straight-forward, i got a cnc lathe/mill and a UV LED PCB developing glass table)
anyway, what my question really is, would you know of how to mess with the printer driver program and/or circuitry to use it as a plotter as well, so it could laser reduce graphene oxide in continuous lines while changing from one axis to another instead of rastering? rastering would be fine for the deposition of the EL polymer but i think the graphene would have a more continuous molecular formation if it was reduced as a continuous trace.
DIY, skapande av OLED mha reducering av grafitoxid film?
DIY, skapande av OLED mha reducering av grafitoxid film?
I tråden Kretskortstillverkning, inkjet direct to PCB (Epson S21) hittade en annan EF medlem en webbsida Converting an Inkjet Printer to Print PCBs och där föreslår någon en idé om hur man skulle kunna skriva "OLED" skärm med hjälp av laser + ink och grafit. Låter galet, men är det något som kan tänkas fungera?
