Digital BW, The Print

Does anybody have enough chemical experience to say what would happen if 
you added a drop or two of photo flo
to each ink bottle?  I would think it might help with clogs, but 
wouldn't want to try it if there were any other problems.
It doesn't seem to affect photo films or papers in any way, so was just 
wondering if it may make inks flow better.

Jerry



jim hayes wrote:
> --- In DigitalBlackandWhiteThePrint@y..., "Paul Roark" 
> <paul.roark@v...> wrote:
> 
>>Jim,
>>
>>You wrote:
>>
>>
>>>... With a CFS and MIS VM ink in an 1280.
>>
>>>In the first 4-6 weeks of usage I did not notice these problems, 
>>
> nor
> 
>>>did I have them when using individual non tubing carts for 6 months
>>>prior to CFS install. Now at 10 weeks things seem to be happening 
>>
> <snip>
> 
>>Given your location and experience, I'm surprised you use a 
> 
> continuous feed
> 
>>system at all.  I no longer do.  They clearly have more places where 
> 
> there
> 
>>could be trouble.
> 
> 
> Yeah, you said it. However I thought I could put one over on other 
> nature because I installed the CFS on July 28th, when the humidity 
> here generally keeps above 40% without needing a boost from my 
> humidifier except maybe around 4 hours of running time every two weeks 
> or so.
> 
> In mid September I had to start to use the humidifier more and more to 
> maintain 40%RH min. Oh well...even with artifically boosting humidity 
> it doesn't cut it.
> 
> 
>>>2) Visible ink caking inside K bottle and a little in C bottle.
>>
>>The K has the highest ink load and uses a more volatile solvent.  If 
> 
> you
> 
>>have used the standard MIS Archival K (not as black), does it have 
> 
> fewer
> 
>>problems?
> 
> 
> Haven't tried that option. How would the curves be affected, 
> generally? Jerry was experimenting with using Epson dye black at some 
> point back, I'd expect he got great density with that but fade 
> resistance?
>  
> 
>>The C has the next highest loading.
> 
> 
> And I did observe a small amount of "caking" in the C bottle.
> 
> 
>>>3)..."leopard spots" ... Within a few minutes to an hour,
>>>all but the 100%k, possibly 95%k steps look nearly normal- spots 
>>
> fade away.
> 
>>...
>>
>>Sounds like drying I've seen on other papers.  I don't know why it 
> 
> changes.
> 
>>Perhaps humidity?  Perhaps the more volatile carriers have 
> 
> evaporated
> 
>>through the tubing, leaving a carrier with a different 
> 
> characteristic?
> 
> Yes, that's my suspscion. I imagine a more non-uniform ink or clumpy, 
> due to evaporation, hitting the paper. Sometimes it spits out a clumpy 
> wad, sometimes a more dilute k.
> 
> 
>>>...mottling at 100%k is more pronounced on both fresh samples,
>>
>>More solvent would mean more evaporation and more change of 
> 
> characteristics.
> 
>>???
> 
> 
> Yes and I can confirm at 48 hours drying time that there is a visible 
> difference in 100%k, a little in 95%k. If you look really hard, traces 
> of mottling are still faintly present at as light as 70% occasionally.
> 
> So I pulled the CFS and ordered fresh bottles and carts for vacuum 
> filling. Am sending Epson ink through printhead in the meantime to 
> flush it out good.
> 
> 
>>I wonder if the UltraChrome black would work for you there.  I think 
> 
> Epson
> 
>>has done the most to get the inks to behave themselves in lots of 
> 
> different
> 
>>environments.
> 
> 
> I'm leaning that way, this is too much work. My two worries are fade 
> resistance of UC vs MIS VM, and finding a workflow that doesn't cost 
> $500 if possible<g>. Any illunination on these?
> 
> 
> 
>   I hear that the UC-K is not that great on Eclipse, 
> and, of
> 
>>course, it is more expensive.
> 
> 
> I got TSS photo to print out some stuff on Eclipse 190gsm with both 
> matte AND photo black. Yes it has some problems the biggest is I'm 
> disturbed by the drop out from just higher than 90%k to 100%k. Also of 
> course they didn't use any correcting software and there is 
> metamerism, and also an overall color change in different light.
> 
> OTOH, if it's the only thing that doesn't dryout, clog up, print 
> green, fade away in two days of medium light, destroy the printer, etc 
> etc, like everything else has these last two years, then hey, I might 
> live with it- it at least sort of works.<g>
> 
>>Good luck.
> 
> 
> Thank you Paul.
> Jim H.
> 
>>Paul
> 
> 
> 
> 
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