Digital BW, The Print

You were right (as usual), Paul. 

I finally got around to retesting this and discovered that the UT14 magenta inks were contaminated with magenta color ink (Lab A up around 5). 

As I mentioned before, this printer has never had color inks in it (apart from UT14), so the problem originated with MIS. The inks have an expiry date of March 13, 2014 in case anyone wants to check theirs.

I've contacted MIS about replacing the magenta UT14 inks. They didn't reply to my March 9 request for help when I first discovered this problem, so we'll see what happens this time …

Mark 


--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Paul" <roark.paul@...> wrote:
>
> "mccarvill" <mccarvill@> wrote:
> >
> > Paul wrote:
> > ...
> > > Is it possible there was some actual magenta color still in the setup?
> 
> > No, this printer has never had color inks in it.
> 
> 
> I might add that a reliable source once mentioned another source of these types of problems.  The ink companies use the same equipment to process different types of pigments.  So, if they have not thoroughly cleaned their equipment, there can be pollution of one ink by a previously processed ink. 
> 
> Paul
> www.PaulRoark.com
>