Digital BW, The Print

Gareth,

>I have recently purchased some VT Blax inks (rebranded MIS, as they
>are part of the same company)

I don't think they are the same company.  Permajet appears to be a
re-seller.

>It seems that some prints when I print them out are missing some
>tones, and this is causing almost polarisation of the image.  I have
>printed them out on an 1160 with a quad-tone VT Blax set and there
>doesn't seem to be a problem.

It could be bad curves.  I'll send the "No color adjustment" 1270/870 curves
I have that usually work better than the older ones.

>... when I do a nozzle check it is fairly
>good with only a couple of lines missing (1mm on maybe one of the six
>patterns),

The nozzle check should be perfect, not just fairly good.

Good luck.

Paul
http://www.PaulRoark.com