Digital BW, The Print

Terry, When printing out to 100%, you are trying to determine just how much
ink can go down on a piece of paper. Since the dmax doesn't change with more
ink, you stop using the ink. Why, too much can allow bleeding that causes
images to lose sharpness.  What does your 70% read?  Different ink sets,
different amounts, different printers different ink amounts. The  curves
posted or starting points. we all have are own set of perfect numbers and
preferred looks and controls. 

 

Eric Neilsen

Eric Neilsen Photography

4101 Commerce Street, Suite 9

Dallas, TX 75226

 

www.ericneilsenphotography.com

skype me with ejprinter

 

  _____  

From: DigitalBlackandWhiteThePrint@yahoogroups.com
[mailto:DigitalBlackandWhiteThePrint@yahoogroups.com] On Behalf Of Terry
Sent: Monday, November 23, 2009 12:40 PM
To: DigitalBlackandWhiteThePrint@yahoogroups.com
Subject: [Digital BW] Maximum Usable Black vs. Dmax - What's the Big Deal?

 

  


As I understand when printing out the Ink Separation Page in QTR, the Photo
Black (PK) or Matte Black ink (MK) at 100% is the maximum black. Yet
visually, on most Luster/Pearl/Semi-glossy papers, the 55, 60, or 65% ink
square is as black looking as the 100%.

For example, when I measure the 100% PK ink square on Harman Crystaljet
Luster RC paper, printed with Epson inks on my R800 / R1800 with my
densitometer I get 2.64. The 60% black measures 2.13 yet visually looks as
black as the 100%. The 60% is typically chosen to create the QTR profile yet
the maximum density achievable is never really used. This general
relationship is the same for all Luster/Pearl/Satin/Semi-gloss papers I've
tested.

Yet for the inherent difference between Luster & Matte papers what is the
"big deal" about high Dmax and can you really use the 100% in creating a
profile?





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