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Digital BW, The Print

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Message

Re: Clogs. Why they happen and how to avoid them.

2002-04-17 by jimhayes361

--- In DigitalBlackandWhiteThePrint@y..., "iwasnvrhere" 
<iwasnvrhere@y...> wrote:
> Hello everyone,
<snip>

Excellent post, you're reading my mind. I'll add a couple of 
thoughts...


> 2. Store your printer in a humidity controlled room-not really 
> feasable and I don't have a recommeded min/max humidity, sorry.


The humidity where I am is about 20%-25% in winter and about 35%-50% 
in summer. I added a warm mist humidifier, made by Slant/Fin. This is 
one of the few models that has a UV germicidal light to kill bacteria. 
I set it so the two hygrometers in the room average 38-44%RH and I run 
a draft quick 20 second purge print twice a day. If the humidity goes 
below 40%, it tends to have more bad nozzle checks. If below 35%RH, it 
gets much worse. Now that spring is here, my clogging issues are 
dissapearing, and my printer works much better. It seems to prefer 
"natural" humidity to humidifier generated RH.

> 3. Prime or print often. It can't dry out in the head if it's on 
> the paper.

I find I actually SAVE ink by running my two purge prints/day, as I 
don't have to do nearly as many cleaning cycles.

> 4. Some CIS users have also run into this problem. Especially in 
> the two darkest inks. The problem here is that water will evaporate 
> right through the tubing leaving the cosolvents and pigments behind 
> to start the film cascade that's supposed to happen on the paper. 
The 
> dryer climate the CIS/printer system is in the faster this will 
> happen. If your going to store your printer for long time remove the 
> inks from the tubing.

This is why I'm leaning towards a MIS CFS system, after experiences 
with two nomorecarts systems. Not because the tubing is more or less 
permeable, but because it's so cheap, I can throw it away with every 
set of bottles I buy. It only costs $35 to replace the cart/tubing, 
$25 if you assemble it yourself from parts. So I'm figuring a four 
month duty for each CFS, then toss it all out.
Jim H.

> I hope this helps and if anyone would like to add something 
> please let me know.
> 
> Jeff

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