HP B9180 for digital negatives

[Sandy King <sanking@clemson.edu>]

In conjunction with another person I just ran some tests for UV 
blocking density with the HP B9180 printer, which is a 13" wide 
pigment printer of similar characteristics and performance to the 
Epsons 1800/2400.

The results are very encouraging. The UV blocking of Green by itself 
in the PDN tonal palette is log 4.75, Red is log 2.58 and Blue is log 
1.31. The practical consequence is that there is a wide range of 
specific color matches on the PDN color palette that would work for 
any given alternative process. I also checked Michael Koch-Schultze's 
color arrays and you can find multiple working squares there as well.

I will continue my tests today of this printer for smoothness and tonality.

Sandy King