What paper should i use for toner transfer on PCB.?

I assume you are intending to etch your own PCB using toner as a mask.





I did this once, and I had very good luck using an overhead transparency that was intended for a photocopier or laser printer. I printed it in mirror image, so that when I laid the printout on the PCB toner side down, the design was correct.





Then it's just a matter of heating it to the point the toner transfers to the copper. I put a few layers of paper towels down, and then used an iron, making sure not to move the transparency. Make sure you use a fair amount of pressure on the iron so that the toner transfers everywhere. If I recall correctly, I had the iron set pretty close to maximum heat. So long as you don't melt the transparency, you should be OK. If there's any place where the toner didn't transfer, you can touch it up with a sharpie marker (believe it or not, the sharpie works just as well as the toner to resist the etching, and cleans off a LOT easier).





The only problem I had was that it was difficult to remove the toner, best thing I found to do is simply to soak it in rubbing alcohol for a while, and then just keep scrubbing at it until you have cleaned the toner off of your copper traces. A scotch-brite pad or other mild abrasive will work well.





Hope that helps.