Digital BW, The Print

--- In DigitalBlackandWhiteThePrint@y..., "tomoc" <tomoc@y...> wrote:
> Jim-
> 
> Have you considered that your CIS problem might be from the 
> atmospheric pressure differonce at elevation?
> 
> I don't know which way you should go, but moving the levels of the 
> bottles up and down affects the flow rate very demonstrably...you 
> might experiment with that???
> 
> Tom O'Connell
> 
> TomOC@y...
> www.thomasoconnell.com

Tom,

Yes, a little misunderstanding there. I'm currently using carts 
(non-CIS) in an 1280. In the past I've used a nomorecarts CIS with 
both Piezo and MIS VM ink in an 1160. Turning it on every day I 
sometimes get clogs, sometimes don't. 50-50 maybe, too early to tell.

The first CIS (Piezo ink) almost never had a clogging issue- the 
problem came when the Piezo ink system had a density shift over time.

The second CIS, with a brand new 1160 worked great for two months and 
suddenly clogged fiercely with MIS VM after a two week period of 
inactivity at 20%RH. Raising the bottles a bit didn't solve the issue, 
but I agree it is a factor, so much so that now with the non CIS carts 
in the 1280, I am trying to keep track of if I get more clogs when the 
ink level status monitor gets lower or not. Hence, one of the items 
listed in my original post.

This can get complicated. Consider that also at elevation, water boils 
 at a lower temperature. A CIS may undergo more evaporation over time 
of the ink up here, say, just as one guess.
Jim H.