Digital BW, The Print

Hi,
I printed some BW prints on several papers.

The ink was UC K2 (QTR) but the real test here is the paper yellowing properties:

The papers were: 
Bright - Epson Enhanced Matte (acidic), Red River Aurora Bright (rag), Moab Entrada Bright (rag), PremierArt Matte BW (alpha cellulose)
Natural - PremierArt Hot Press Rag 210, Moab Entrada Natural Rag

After six weeks sellotaped to the inside of a window, the Enhanced Matte, Entrada Bright and Aurora Bright had all yellowed to a similar extent. To illustrate this, I can report that the Entrada Bright is virtually indistinguishable from the Entrada Natural that has been in the window for the same period.

The PremierArt Matte BW had yellowed *far* less, though it *had* yellowed when compared with the dark storage control print. The tone of the neutral print has become warm. (As an aside, I have an unframed print on the wall with this paper that has been there for nine months. The paper yellowed a bit, but also the QTR UC-K2 neutral print has warmed considerably. It still looks nice, but is warm, no longer neutral.)

The natural rag papers - PremierArt Hot Press and Entrada Natural - were unchanged after six weeks. (The dMax of the Entrada is better than the PremierArt Hot Press as it was at the time of printing.)

I hope this information is of use.

Richard
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