Digital BW, The Print

My carts do have spongy (white in color) material on the side that 
feeds ink to the print heads. Maybe I'm going to find myself 
approaching the 5-6X useful life that you've experienced. I've 
probably refilled about 3 or 4 times so far.  Certainly affects the 
economy of using this system.

Does anyone sell carts without sponges?  Are sponges necessary?  
Anyone know about this issue?

Thanks.

Elizabeth

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, <aderca@s...> 
wrote:
> Don't know if the cartridges you are using have a sponge,
> but if they do, there is a limit to the number of times you
> can refill a cartridge- "foam" starts building up to the point
> where even trying to prime the cart by drawing 1cc with a
> syringe won't clear the air bubbles inside.
> I had been using a set for Canon and had to chuck them
> after about 5-6 times.
> 
> Regards
> 
> Andrei