Digital BW, The Print

>Matin (II),
>
>Thanks for the suggestion, but I figure if Epson thought the sponge
>wasn't needed, they could have saved more money in the design of the
>carts and left them out, IOW it is there for a reason.
>Terry

>One obvious reason to me is that pehaps one third of the ink they sold
>you in the cartridge will never be used (it remains stuck in the sponge),
>and that little insignificant piece of sponge will increase cartridges
>sales by 50 %  for Epson !
>Jean-Michel Paris

Sponge - it should mechanicaly blocked the "plash" by head moving and 
increase of hydraulical resistance of system - reason you should 
raise the printer if you use system without carts , too.

>If the ink is properly formulated, we should not have to resort to
>such potentially harmful measures just to get it to work in a printer
>it is supposed to work in.
>Terry

But there are potential unknown photo-effects due to light - because 
in normal conditions all ink is in dark. So there could be some 
photocoagulation, photopolymerisation, ... Not the sponge itself, but 
in the botom of carts is small filter covering outlet to filter 
impurities.

The reason to try "input filters" are above-mentioned.

Another problem could be an oxygen - reason, why the original CIS 
uses Tygon tubes and Nalgene botles - they both are non penetrable 
for oxygen molecules.

Martin (II)