Digital BW, The Print

I do not have experience, but i did just read a glossary of inkjet 
terms, and I think what you describe is called feathering or wicking -
where the ink travels into the paper (substrate) in patterns. It may 
(only my inexperienced opinion) be caused by an unsuitable (to the 
ink you're using) paper coating ?
Frankg

> Hello list,
>   After doing some reading, I decided to go with 250
> gsm Museo for my final sellable/exhibition prints. 
> However, after making some prints with my sample pack,
> I noticed a sort of "water color" edge on some parts
> of the print.  Basically, anywhere the image quickly
> changed tone from light to dark, a very distinct hard
> line appeared, like a water color filter had been
> applied. 
>   I'm using MIS pigs on a 1270 w/ NMC CIS on a PC &
> PS6.  I tried printing w/ different media settings,
> with the paper thickness switch set to +&0, with a
> profile, w/out a profile, but it kept printing the
> hard edge.  The same image on Epson Archival Matte
> prints fine.  BTW, I'm printing with "no color
> adjustment" checked.  I also did some print head
> alignments to no avail.
>   Has anyone experienced this with Museo?  Am I being
> too picky? (it's small, but still noticeable w/out a
> loupe) Or is this just a characteristic of cotton
> paper, yet another "trade off" for longevity?  
>   I've posted my scanned prints here:
> http://www.tronicart.com/inks/museo.html
>   Any suggestions are greatly appreciated.  If I can't
> get this fixed, I'll try another paper.  Any
> suggestions for a rag paper free of optical righteners
> and available in 13x19, if possible?
>   Thanks for the help!
> 
>  -Daniel Perez
> 
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