Digital BW, The Print

My 1800 is loaded with MIS MK in the MK<PK<&GO positions,and MIS cleaning fluid in the rest. I only use the 1800 for BW prints.The odd thing is that when I do a nozzle check,which shows a good pattern in all three black positions it ALSO records a perfect BLACK pattern in the R (red) position. After a long print session I think it clears!
The print quality is good, even when showing the black in the R channel.
What is happening ? 
Just re-joined the group, & hope someone can work it out.
Chris.

On Nov 12, 2010, at 11:12 AM, bobtail75 wrote:

> My 1800 is loaded with MIS MK in the MK<PK<&GO positions,and MIS cleaning fluid in the rest. I only use the 1800 for BW prints.The odd thing is that when I do a nozzle check,which shows a good pattern in all three black positions it ALSO records a perfect BLACK pattern in the R (red) position. After a long print session I think it clears!
> The print quality is good, even when showing the black in the R channel.
> What is happening ? 

Crossover is only an issue if you are actually printing with the channels it contaminates. This is usually caused by ink being sucked back up into that channel from another. Since it cleans itself out, and you aren't using that channel anyways, its not really a problem.

C. David Tobie
Global Product Technology Manager
Digital Imaging & Home Theater
CDTobie@...


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Datacolor
www.datacolor.com/Spyder3





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Subject: 3MK 1800 nozzle puzzle

Yes, thanks. I just checked the cartridge levels for top-up, to find that the PK cartridge had apparently emptied into the Red one, which should have been clear. Does this suggest a defective cartridge. If so will it be the one that has lost its black ink or the Red one that has apparently syphoned it up ? I will lose a lot of ink at this rate !
Chris.

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, C D Tobie <CDTobie@...> wrote:

>
> 
> On Nov 12, 2010, at 11:12 AM, bobtail75 wrote:
> 
> > My 1800 is loaded with MIS MK in the MK<PK<&GO positions,and MIS cleaning fluid in the rest. I only use the 1800 for BW prints.The odd thing is that when I do a nozzle check,which shows a good pattern in all three black positions it ALSO records a perfect BLACK pattern in the R (red) position. After a long print session I think it clears!
> > The print quality is good, even when showing the black in the R channel.
> > What is happening ? 
> 
> Crossover is only an issue if you are actually printing with the channels it contaminates. This is usually caused by ink being sucked back up into that channel from another. Since it cleans itself out, and you aren't using that channel anyways, its not really a problem.
> 
> C. David Tobie
> Global Product Technology Manager
> Digital Imaging & Home Theater
> CDTobie@...
> 
> 
>   ----------
> 
> 
> 
> Datacolor
> www.datacolor.com/Spyder3
> 
> 
> 
> 
> 
> [Non-text portions of this message have been removed]
>

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "bobtail75" <cperfect594@...> wrote:
>
> What is happening ? 
> Just re-joined the group, & hope someone can work it out.
> Chris.
>
It is possible that the cart that lost all its ink was not properly primed. Suck a little ink out of the bottom of it to create sufficient vacuum to hold the carts ink within. The ideal tool to do this is a bottom fill adaptor from MIS.