Digital BW, The Print

I thought that damaged the heads?

Maris

----- Original Message ----- 
From: "Martin Wesley" <mwesley250@...>
To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
Sent: Friday, November 23, 2001 12:17 AM
Subject: [Digital BW] Re: The use of ink, or when is the cart actually empty?

[snipped]

| Wait until you 
| actually run out of one of the inks before you change carts. You may 
| waste a piece of paper this way but that is cheaper than new carts.

Martin,

Thanks for the reply, I had a feeling that was MO for these lovely ink
sucking beasts.  One concern is that running the cart out of ink could
damage the print head, is it a valid worry?

Thanks again,
Daren

Daren,

Epson makes a big deal out of this but I don't know how critical it 
actually is. I have a 1270 that always runs out of ink when the 
printer software thinks it is half full. So far this does not seem to 
have hurt anything.

Perhaps some other people have some information on this they can 
share.

Martin Wesley

--- In DigitalBlackandWhiteThePrint@y..., "Daren M." <mdaren@u...> 
wrote:
> Martin,
> 
> Thanks for the reply, I had a feeling that was MO for these lovely 
ink
> sucking beasts.  One concern is that running the cart out of ink 
could

> damage the print head, is it a valid worry?
> 
> Thanks again,
> Daren

In a message dated 11/24/2001 12:23:29 AM Eastern Standard Time, 
mwesley250@... writes:

<< a 1270 that always runs out of ink when the 
 printer software thinks it is half full. So far this does not seem to 
 have hurt anything.
 
 Perhaps some other people have some information on this they can 
 share. >>
I just had an episode I thought for sure was gonna kill my printer. I am 
running a CIS into my 1270, and just happened to take a look at my bottles 
quite by impulse. (I must point out that due to space constraints my printer 
and especially the CIS are not easy to view or access.) The light magenta was 
pumping air in its' tube. I mean a good 10 to 12 inches of no ink in the 
tube. I filled the bottles, set up a magenta square, set it up for about 10 
pages, hit print and prayed it would take the ink up. It did, but it must 
have been half an hour before the ink reached the cartridge. When all seemed 
well I set the unit up for some sepia printing. The first few prints were 
quite magenta, but the color went to its normal hue and all looks good for 
the moment. BTW, a nozzle test also printed fine. I dot know if it really 
ever passed air through the heads. Does yours pass air (so to speak:) when 
you let the carts go past the point when they are supposedly empty?
George J Kunze

--- In DigitalBlackandWhiteThePrint@y..., toomagenta@a... wrote:
> In a message dated 11/24/2001 12:23:29 AM Eastern Standard Time, 
> mwesley250@e... writes:
> 
> << a 1270 that always runs out of ink when the 
>  printer software thinks it is half full. So far this does not seem 
to 
>  have hurt anything.
> 
(snip) 

> I dot know if it really 
> ever passed air through the heads. Does yours pass air (so to 
speak:) when 
> you let the carts go past the point when they are supposedly empty?

George,

Which ever chamber runs out on the 1270 is completely dry and the 
print job proceeds. Since the printer is above eye level I never 
realize the problem until I check the output and discover the missing 
ink.

When I first started with Piezo there was a problem with bad black 
cartridges and I as I struggled through this a lot of prints got made 
with the black nozzzle pumping air so to speak. Did not seem to do 
any harm.

Maybe it is a matter of degree. Maybe a page or two with a dry nozzle 
is okay but if you went off let a 100 page print job run with a dry 
nozzle it would be trashed. Practically speaking there must be some 
tolerance for running with a dry nozzle or Espon would be getting a 
lot of returns.

It doesn't sound like your CIS actually got to the point where there 
was no ink in the cart since you were getting good nozzle checks.

Martin

I went through a number of 1270's earlier in the year as Epson kep sending
me duds! One interesting thing was that they sent a sheet of paper with one
of them that said you should NOT change the ink cartridges on that printer
until the red flashing light just goes solid red. Changing it before could
muck up the ink counter or something.

In the case of the 1270, I would say that the ink counters are set up to
prevent 'running dry' of ink, a totally different thing! I think there may
be some confusion going on between people on this subject!

i.e. When someone says - "I continue printing until I run out of ink" I
suspect they mean that they continue to print until red light goes solid,
NOT that they continue until none of the nozzles are firing ;)  [How could
you do that with a chipped cart anyway? Or am I missing something here...?]

Nij

> -----Original Message-----
> From: Martin Wesley [mailto:mwesley250@...]
> Daren,
>
> Epson makes a big deal out of this but I don't know how critical it
> actually is. I have a 1270 that always runs out of ink when the
> printer software thinks it is half full. So far this does not seem to
> have hurt anything.
>
> Perhaps some other people have some information on this they can
> share.
>
> Martin Wesley
>

George,

Your cart will now have a lot more air in it than it ideally should. This
does not mean that it won't work, just that if it happens again you may find
you will need to reprime the system by means other than vacuum fill. To put
another spin on it - you are currently priting from all inks acting like a
'full' cartridge, apart from Cyan or whatever, that is half-full. Will that
effect you rprint quality? Who knows! ;)

Nij

> -----Original Message-----
> From: toomagenta@... [mailto:toomagenta@...]
<snip> BTW, a nozzle test also printed fine. I dot know if it really

> ever passed air through the heads. Does yours pass air (so to
> speak:) when
> you let the carts go past the point when they are supposedly empty?
> George J Kunze