Hi guys, just performed some simple experiments using my laser printer. I found some hp photo paper samples that I got free with with a HP inkjet, and I thought I'd give TT a go after reading some previous posts about using coated papers. Well, I also bought some green kitchen scrubbers that really give the PCB surface a good clean and surface key (they even turn the scrubber copper coloured). I printed out some text onto the sheet with the printer set to transparency (more toner??). I ironed the sheet onto the cleaned PCB and waited. Now the good part, soaking. While the PCB was still touch-hot I did a test peel (a small corner) and the toner stuch to the copper and pulled the coating off the paper but only where adhered to the toner. The pcb was still reasonably hot i used a sponge and soaked the paper from the back and it instantly softened. I started peeling and the paper peel off even easier. Even more soaking made the process much easier, the board being rather hot I think aided the process by almost steaming the paper. The first attempt was 90-99% transferred, a bit of rubbing with my finger removed some toner but the vast majority was well fixed. I looked at the condition of the paper and pcb after allowing them to dry. The toner had a slightly grey tinge from the coating off the paper. The paper was in great condition with only surface coating missing where toner had been printed and subsequently transferred to the pcb, kind of like using the press and peel system where blue is left where no toner is printed (make sense??). The areas of the PCB which were in contact with the paper coating appear not to have any of the paper coating transferred so no problems with the entire board being coated. The only problem I have is that the free paper came with 2 slightly different shades of coating but with no indication if one is matt and the other is gloss finish...I see some more experiments coming. regards, PK
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Toner Transfer Paper
2006-04-24 by onenastyviper
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