Digital BW, The Print

--- In DigitalBlackandWhiteThePrint@y..., Todd Flashner <tflash@e...> 
wrote:
> on 3/6/02 11:39 AM, jimhayes361 wrote:
> 
> > Therefore, a solvent that not only would dissolve
> > clogs but not evaporate quickly or leave a harmful residue (say a
> > perfume) on pad would be desirable.
> 
> I don't know if it fits the bill but I would think the clear ink 
base that
> both MIS and Mediastreet sell (I don't know what MIS calls theirs, 
but
> Mediastreet's is Jet Jrano) would be the safest thing.

You know, I WAS thinking of trying out some MIS clear base. I didn't 
know it was Jrano, I thought that was more aggresive. Good point. I 
was thinking someone could elaborate on the base stock to the MIS VM. 

> 
> I also wonder how many of our clogs are really due more to air 
blocks than
> inks blocks. It's hard to know because they can take similar cures.

This is indeed the most frustrating thing about printers in general: 
there's no way to isolate all the variables or find the exact culprit- 
it hides behind at least two or three posible causes.
 
 Anyway, you know more 
about
> this than most of us so I'm really just asking.



When it comes to pig inks in a printhead, it's hocus-pocus. I had a 
problem or two like this at HP handed me: the answer is test, test, 
test, and statistics. That would be expensive for us to do, trying to 
make our printers fail in numerous ways. I really have no answers. I 
am trained to rake through comments made by others trying to eliminate 
ambiguous or ill defined statements, and reformulate ideas to be 
understood. And have others do it to me (with much better 
alacrity<g>). If you work for HP R&D this happens every day you show 
up- or it was the culture ten years ago. But I have no special 
knowledge, other than what I picked up here and the usual sites and 
people.

I'm at a loss with chemistry though, being a mechanical engineer, and 
that ten years ago.
Jim H

 
> 
> Todd