Digital BW, The Print

"Greg" <dfaprinting@...> wrote:

> > Yes that is correct; I have substituted undiluted HP PK for the cool
> PK in the C position and 
> > a HP PK diluted with MIS glop for the LK in the LC position
> 
> 
> Has this been checked to make sure they mix properly and don't form a
> goo like some dye/pigment mixes form. Also I though that HP had their
> own GLOP in large format carts that could be used, and would think
> this more suitable for mixing with HP inks.

Yes, very good point about the HP glop, but I thought I would try it with what I had; after 
some discussions with Paul I felt that the risk weren't too great, but that is something each 
of us have to consider the risk. If this ends up working I may go for the HP glop.

Correct me if I am wrong Paul, but I believe that most of chemicals or ingredients in the 
C6 base and MIS glop are common to most of the inks themselves and fairly neutral, from 
what I've ascertained from some of Paul's PDF's, so it seems to me that the risk of 
interaction would probably be minimal.  Also, the whole point of HP's resin coated 
pigments is to protect them from environmental interactions, so I conclude that the 
relatively mild or neutral ingredients we are using will do much to compromise the HP 
pigments; of course I could be wrong and is probably a question for a chemical engineer 
familiar with ink chemistry.

> 
> I am just concerned that the full interaction between the HP inks and
> third party materials is not fully explored to determine if it is all
> safe enough to recommend that other people adopt it. Maybe I worry
> needlessly, but I would certainly approach this with caution and a
> printer that I considered expendable.
>
Yes, certainly caution is advised, but nothing ventured nothing gained.  Were not 
recommending that anyone try this yet, we are just making others aware of our 
experimentations, and encouraging discussion and perhaps some insight from someone 
who has perhaps already gone down that road before.