Digital BW, The Print

--- In DigitalBlackandWhiteThePrint@y..., toomagenta@a... wrote:
> In a message dated 11/24/2001 12:23:29 AM Eastern Standard Time, 
> mwesley250@e... writes:
> 
> << a 1270 that always runs out of ink when the 
>  printer software thinks it is half full. So far this does not seem 
to 
>  have hurt anything.
> 
(snip) 

> I dot know if it really 
> ever passed air through the heads. Does yours pass air (so to 
speak:) when 
> you let the carts go past the point when they are supposedly empty?

George,

Which ever chamber runs out on the 1270 is completely dry and the 
print job proceeds. Since the printer is above eye level I never 
realize the problem until I check the output and discover the missing 
ink.

When I first started with Piezo there was a problem with bad black 
cartridges and I as I struggled through this a lot of prints got made 
with the black nozzzle pumping air so to speak. Did not seem to do 
any harm.

Maybe it is a matter of degree. Maybe a page or two with a dry nozzle 
is okay but if you went off let a 100 page print job run with a dry 
nozzle it would be trashed. Practically speaking there must be some 
tolerance for running with a dry nozzle or Espon would be getting a 
lot of returns.

It doesn't sound like your CIS actually got to the point where there 
was no ink in the cart since you were getting good nozzle checks.

Martin