Tony Duell's maxed out 5160 and PDP

I sorted out my CX about 20 years ago, and I never remembr seeing such refil kits over here/. Perhaps I wasn't looking on the right places I will see what I can find. I have a rather itneresting book called 'Electrophotography' which covers such electrostatic processes and it may ahev some clues. It's dififcult to see why the toner would be very different for the 2 processes. The basic idea from what I rememebr goes like this : 'Fog/ the drum with ligth to discharge it Charge the drum evenly Write the image to the drum, discahrging soem bits of it. Apply chargeed toner. If the toner is charged with the same polarity as the drum, it'll be repelled from the still-chrged bits of the drum (the bits that have not received light), and will stick to the discharged areas.. If the toner has the opposite polarity to the drum, it'll stick to the still-charged areas Apply papre with a strongly-charged electrode under it to attract the toner from the drum to the paper. Melt the toner into the papepr (fusing) It;s possible the conductivity of the toner has to be different, I guess, I can't think what else it would be. Those do all sound fairly interesting. But I don't think I could afford shipping (and I don't have space for) another CX printer itself. IIRC there were 2 ways to get a CX-VDO interface (or something close to one) on an SX printer. The first was a buffer board that fitted in place of the formatter. It included things like the differnetial driver/receiver for the laser control and sync signals. This was an officia Canon product I think. Somewhere I have a scheamtic of it, it's quite simple The second was a board that fitted in the optional interface slot in an HP LJ2 and others that used the same formatter). AFAIK, this was a third-party product, and I have never seen one. -tony