--- In
Homebrew_PCBs@yahoogroups.com, "Stefan Trethan"
<stefan_trethan@...> wrote:
>
> On Sat, 05 Aug 2006 21:16:07 +0200, Steve <alienrelics@...> wrote:
>
> >
> > BTW, if you refill OEM Epson C6x/C8x series carts from the top, you
> > are doing it the wrong way and can never refill more than about half.
> > Steve Greenfield
>
>
> Sponged ones?
>
> I see no reason why the spongeless shouldn't get full...
Then you aren't looking closely enough. :') I am not talking about
-all- spongeless cartridges. As I stated, only OEM Epson C6x/C8x
series, maybe (haven't checked yet) the R200/300 series.
> There seem to be two mechanisms inside a spongeless carts. The air
vent is
> brought down in a channel with many twists to the very bottom of the
cart.
> Also, in the center there is a strange round chamber that leads to the
> spike. I'm not sure which purpose it serves.
Some of that goomba is to make it impossible to simply inject ink in
through the outlet. Some is there to regulate ink pressure.
The upshot? Turn it upside down, drill a hole next to the ink outlet.
Fill a syringe with the proper amount of ink for that cartridge,
insert it into the hole you drilled. You should have selected a drill
bit so that the syringe (or blunt adapter from MIS) is a tight fit in
the hole.
Now using either another syringe (twice as large as the first) or a
vacuum pump, suck air out of the ink outlet.
The syringe full of ink will pull itself down, the second it hits
bottom stop pulling out the outlet. Bang! It is a full as it is going
to get, both top and bottom chambers.
Now if you are talking about MIS spongeless, those are -made- to be
refilled so they do not have all the extra junk just to make refilling
hard.
However, MIS instructions leave out an important step: you should
temporarily tape over the air inlet hole before removing the fill
plug. Then -after- reinstalling the fill plug, -before- drawing a
little ink out the ink outlet to prime it, remove the tape over the
air inlet.
If you don't, ink flows up into the air inlet. This can cause problems
later, and you won't know why. Dried ink in the air inlet can hinder
air, so nozzle checks look fine and light printing is OK, but heavy
printing can show random banding as printing progresses. Then a nozzle
check or light printing immediately after can still look just fine.
Steve Greenfield