Digital BW, The Print

Hi Moreno, 
    I'm using the bottom fill technique that MIS advocates (using the blunt
plastic attachment -no needle).  Would this blunt attachment also damage the
1 micron screen?
    They claim that bottom filling gives fewer air bubbles.
    I can't say for sure that this is working to stop bubbles, as I seem to
get the occasional one either way.

Brian

> Message: 1
> Date: Mon, 21 Jan 2002 11:20:01 -0800
> From: "Moreno Polloni" <mp@...>
> Subject: Re: Re: Vacuum filling
> 
>> Do you (or anyone else here) know how long those 1 micron screens
> last,
>> using the "bottom fill" technique?
> 
> Once you've poked a hole through it with a needle, the integrity of the
> filter is broken. Best to use the top fill. It works fine if you let the
> carts sit overnight, and it's not as messy as bottom fill.
> 
>

>     I'm using the bottom fill technique that MIS advocates (using the
blunt
> plastic attachment -no needle).  Would this blunt attachment also damage
the
> 1 micron screen?
>     They claim that bottom filling gives fewer air bubbles.
>     I can't say for sure that this is working to stop bubbles, as I seem
to
> get the occasional one either way.

As I don't use that method, I can't say if it damages the screen or not; but
lets assume it doesn't. Any crud that's in the ink, which would normally get
filtered out by passing though the cartridge from top to bottom (the filter
is at the bottom exit), will still get filtered out as you bottom fill, but
it will be on the wrong side of the filter. As soon as you start using the
cartridge, whatever didn't pass through the filter during the fill procedure
will get flushed into the print heads as the ink flows through the
cartridge. This is exactly what you don't want to happen.