Digital BW, The Print

Terry, were I to want more critical accurate representation of each paper I would have done this differently. For now I was only interested in comparative information, so I can eliminate further investigation of papers that this test revealed as less interesting. That's why the two commonly used papers, HPR and GE, are included.
So an intern did these measurements quickly, with no multiples averaging, on a light wood table with one layer of budget white gloss inkjet paper over that. An EyeOne non-UV Pro was used. I'd love to devote a week to sorting some of this out, but as it is I get to it in fits and starts, and I have to narrow the activity to the papers of interest here, but I'll share what I discover.
Sample packs of both the Epson Signature Series and the Cansons are available. If any of this sparks interest so far, I'd suggest getting some. Right now Alise seems to be back ordered everywhere.
The evolving coating technology is of interest to me. Not only with regard to the subjective beauty of the resulting prints, the dmax and ink receptive qualities such as dot sharpness and total ink capability, and linearizing preformance, but in terms of longevity. Mark McCormick-Goodhart once told me that the fact that different coatings create different hues with mono ink should be a major clue that something delicate, and potentially problematic, is happening chemically at that bond. Of course physical delicacy is the other major issue, I've had far too many rejects this last year, so tough new coatings are a priority for me.
Anyway, for a more strict representation of the paper, I'd trust your measurement for the Canson, mine are to compare with the others done at the same time.
Tyler

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, Terry Ritz <t.ritz@...> wrote:
>
> This is really interesting Tyler.
> 
> How are you measuring the paper base? I get 97.71 1.46 -0.36 when I measure
> Canson Rag Photographique with my ColorVision Spectro Colorimiter. That's
> using two blank sheets and than a black surface, under the page I'm
> measuring.
> 
> Terry.
> 
> 
> On 20/03/10 6:54 PM, "tboleyyh" <tyler@...> wrote:
> 
> > Canson Rag Photographique 310-
> > White LAB= 98.93 0.03 1.16
> > 50% AB= 1.34 5.78
> > Dmax= 1.741
>