Yahoo Groups archive

Digital BW, The Print

Index last updated: 2026-04-28 22:56 UTC

Message

UT-3D spectro graphs

2006-05-05 by Paul Roark

I've posted some graphs that show spectrophotometer readings of test strips
printed with the UT-3D beta inkset and some initial profiles I've made.  For
comparison 2400 "Advanced B&W" and UT-R2 test strip graphs are also
included.

 

See http://home1.gte.net/res09aij/UT-3D-Comparison.pdf

 

In these profiles (curves) I've used the paper white to define "neutral."
I'm increasingly inclined to think that the hues or tones of the print look
most "neutral" when they match the paper.  On the other hand, I also find
that cold blacks look blacker.  The graphs and inkset show these
preferences.

 

The main thing that is holding up the inkset release is my indecision as to
the tone of the LK.  I'm currently inclined to have the inkset include a
neutralized LK that, on HPR prints with a midtone maximum Lab b = 1.8 in the
midtone, rolling off to blend with Eboni in the deep shadows.  Lab a = 1.4 +
- 0.2.  See the posted 2400 test strip graph for comparison.  The purpose
for this is, in part, to get an ink in the MIS inventory that can be used in
2k printers to make an easy 2-ink B&W.

 

All suggestions are most welcomed.  I'd like to get the inkset going as soon
as possible. 

 

Paul

www.PaulRoark.com <http://www.paulroark.com/>  

 

 



[Non-text portions of this message have been removed]

Attachments

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.