Digital BW, The Print

Paul Roark wrote:
> Ernst,
> 
> 
>>Paul Roark wrote:
>>
>>>...The green shift is a problem
>>>that has shown up on my 7500 when it is not used for 
>>>more than a month...  
>>>It's non-use of the printer that seems to cause this.  
>>>I just loaded a new beta UT1 toner in my 7500 and hope that 
>>>it'll take care of the problem...
>>>Using the printer at least every few days should avoid the problem.
> 
> 
>>... it looks like it happens much faster and less predictable.
> 
> 
>>Wednesday I got that green shift of the light toner for the first 
>>time in my 9000 but it has been idle for longer periods before 
>>and this time it was less than 4 days.
> 
> 
> Is it possible that the inks separated in the carts when idle for the longer
> period and you had been using ink in the lines that was not separated for a
> period?

I'm using my own CIS system that has 500 ml bottles with a direct 
connection to the internal inklines. The total length of the 
lines isn't more than with carts. But when I observed it I 
checked the bottle to see whether settling had occured and 
couldn't see it. Neither with the 1.5 pint content in two bottles 
for filling.  I will pull the ink out the line and see whether it 
gets back to normal. Normally (with Generations yellow for 
example) you can see the pigment settling at the bottom of the 
bottle.

I will take more care to keep them suspended. I had the 
impression that the Ultratone / Ultrachrome inks suffer less of 
that problem.


Ernst