Digital BW, The Print

Glenn Barry wrote:

> I've nearly got my 3000 back up and running and am considering a CFS, but came across these extra large cartridges on Ebay
> 
> http://cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&category=14303&item=3477072570&rd=1&ssPageName=WD2V
> 
> Does anyone have any experience with these?
> 
> Pros cons, etc, etc...even pure speculation as to possible problems.
> 
> Glenn

You can use 9000 carts in the 3000. A guiding tab has to be cut 
on the cart to get them in a 3000. But all the functions will be 
there including the hardware triggered empty warning. Refilling 
with a syringe + 0.8 mm (shortened) needle is quite easy. 220 ml 
ink, about 190 ml used per charge. That's twice the normal 3000 
amount.

I have no experience with the carts on the site you mentioned. 
But checking their images:
There will be no hardware triggered empty signal.  In the worst 
case you could run the inkchannel dry.
Air has to get into the rigid cart to avoid the creation of a 
vacuum while printing. Not that much of a problem with pigment 
inks but not so nice for dyes. The Epson carts have a pouch 
inside that flattens and no air has to get  into the ink 
container itself.
That brings me to what I see as the main disadvantage of that 
cart, you can't use it till it gets completely empty, half of the 
cart below the seal where it is connected to the Epson inkline 
will never be used and while it prints from full to half cart 
content the ink pressure changes with the ink level. Both issues 
don't happen with the Epson carts.
Refilling might be easier though.

If there's a bag in that cart too then most of the problems I 
sketched are not there. But its transparency doesn't show a bag 
like that.

Ernst