Digital BW, The Print

I can only say that I have used Windex W/ammonia, 10%clear ammonia, a mixture of ethyl alc and propelene glycol, as well as the 50:50 denatured alc/H20. All have worked, dependent on the severity of the clog and the time left in the head. The last mix(denatured ethyl/H2O) removed traces of inks even after the others came through clear.
It was the final solution to clearing a totally clogged set of EP7500 heads that had been left for dead as unusable and had been setting open to the air for many months before I acquired the machine. It's also the only thing that I have ever used that completely removed all color from the long tubing between the cart station and heads on the large format machines I have.It does not seem to have caused any problems with the heads and they are now working very well.

Having said that, I wouldn't recommend using a syringe on the heads with any of these mixtures except as a last resort. One could use any of the above mixtures in an old cartridge, even one with ink residues in it, and let the full cart set awhile in the machine and run a few cleaning cycles over a period of time etc. Only if nothing else worked and there was nothing to lose would I force fluid through with a syringe.

If I had to give an opinion of effectiveness for all these my personal ranking would be consistent with the order I listed above.

Hope this helps and is useful.
Regards,
Duane



--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Un Globe Trotteur" <unglobetrotteur@...> wrote:
>

> Would the  50:50 mix of straight denatured alcohol(ie:ethyl) with distilled H2O do a better job than Windex for pigment ink?
> 
> Thanks for any input. I really would like to have this printer working. It looks like a very good printer.
> Pierre
>