Digital BW, The Print

----- Original Message -----
From: "janishilesh" <shilesh.jani@...>
To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
Sent: Monday, September 02, 2002 7:18 AM
Subject: [Digital BW] Media Street Black + FS-N was PiezoTone Selenium 300
Hr Fade test


> Martin,
>
> As you and I discussed on the phone a few days back, I am interested
> in the deeper blacks of the new PT inks. I do not have at hand, but I
> do have MediaStreet Generations Black (MS-GK). These inks also
> supposedely have dye content in it to give the deeper black. I used
> this ink with FS-N (vacuum filled virgin carts, not CIS). The prints
> were very, very nice once I created a new curves adjustment layer.
> However, within a few prints, one a 12 x 18 print, the color cart
> started to leak like crazy (!). I dont know why, but it certainly
> made a mess of my b/w 1280.
>
> Not wanting to give up completely, I played around the kitchen sink
> with FS-NK and the MS-GK. It is incredible how these inks are
> different. I took two very white porcelin cups filled with water, and
> put a drop of each of these inks in them each. Even the first
> interaction with water is very different. But the most obvious
> difference is that FS-NK is very neutral, and single hued. The MS-GK,
> on the otherhand, separates out into a dye (very purple/red/magenta)
> content and more or less masks any native pigment color. So is the PT-
> K the same as MS-GK? And was my cartridge dripping caused by
> incompatibilities between FS-N and MS-GK when on the parking pad? Or
> was it just a bad fill job?

Shilesh,

I really am beginning to wonder if the PT-K and the Gen-K are not the same
ink. What you describe in your dilution test is exactly what I saw in the
sink after cleaned up the syringes I used to take samples from the MIS-VM K
and PT-K bottles. The VM-K is obviously a very neutral black but the PT-K
broke up into a warm/purple just as you describe.

Also check out Paul's fade testing of the Gen and Indelible blacks in
folder:

Files > Ink Sets > MIS

and then take a look at his fade test of the PT-K, PzoTone-VM-FS-K-100 hr
fade test.jpg ,
in folder:

Files > Ink Sets > PiezoTones > PiezoTone vs MIS-FS

Is Generations making the PT inks for Jon?

The leaking cartridge would probably be something else. Perhaps a vacuum
leak in the cart? If the inks reacted badly together I would expect a
clogging rather than a leak but I believe they are compatible.

Martin Wesley