Homebrew PCBs

Hi to all.

I thought about hacking the EPSON printhead protocol for long time, but never actually got the time to try it.

Just yesterday I was chekcing around news in DIY-inkjet printing ( http://techref.massmind.org/techref/pcb/etch/directinkjetresist.htm )and found  link to Volkan Sahin's apparently successfull attempt ( http://techref.massmind.org/techref/pcb/etch/custom-vs.htm )

It was interesting read, but I couldn't undestand his explanation for signal protocol driving the head.

So I'm looking around for his email to contact him directly.

Or maybe someone here could shed additional info on this ?