U of S | Mailing List Archive | alt-photo-process-l | RE: Paper Negative Details - Dyes versus Pigments?

RE: Paper Negative Details - Dyes versus Pigments?

Well Keith,


I did a quick test of Johnson’s Baby Oil with a sheet of Costco Kirkland Glossy ink jet paper (aka Ilford Gallerie Premium Glossy Inkjet paper) and a digital negative printed on Clear Print Vellum.


The Costco paper was printed with an Epson 1280 printer with OEM dye inks and the Clear Print Vellum was printed with an Epson 2200 using OEM Ultrachrome inks. Neither paper showed any ink bleeding.


The Costco paper did not turn translucent except at the edges of the paper. I then peeled the backing off and re-immersed the paper in baby oil. It did turn translucent then, however I had a difficult time peeling the RC backing evenly and the peeled paper looked splotchy.


For the record the Costco paper base (without oiling and peeling) has an ortho log density of 0.73. Quite suitable for making negatives for silver gelatin printing, however the UV density of the unoiled Costco paper base was 2.90, not suitable for actinic processes.


The un-oiled UV log density of the Clear Print Vellum is 0.70 and the ortho density read 0.18. I tested the Clear Print vellum last year for digital negatives (using BL tubes) and found that the printing time to be extremely long to get a faint image for traditional cyanotype. Perhaps I will retest it soon with my new NuArc 26K to see if it works any better.


The oiled Clear Print vellum is drying now so I can’t  report anything about the performance of it with Johnson’s Baby Oil. Maybe next week.


I may test the Epson Enhanced Matt paper to get an idea of how it works.


Don Bryant


P.S. MIS traditionally doesn’t reply to e-mails so if you need product information call them.




From: Keith Gerling [mailto:keith.gerling@gmail.com]
Sent: Tuesday, December 04, 2007 1:52 PM
To: alt-photo-process-l@usask.ca
Subject: Re: Paper Negative Details - Dyes versus Pigments?


And on that note, I'll make another attempt to steer back to the original question that started this thread:  is there an advantage of  using dye inks over pigment inks for paper negatives?  I'd test it myself, but while the pigment ink cartridges on the Epson 7600 I have recently acquired are mostly full, the yellow is empty and God forbid Epson would allow me to print anything without yellow. 

Ahh, but if some kind soul would print a postage-sized print with Ultrachrome inks and smear a little baby oil on it to see what happens - well, I would be eternally grateful.


On Dec 3, 2007 10:30 PM, Katharine Thayer <kthayer@pacifier.com> wrote:

On Dec 3, 2007, at 4:06 PM, Trevor Cunningham wrote

> 3.  Does oil lend more to bleeding, or does that depend on the ink?

I think bleeding may depend more on the ink than on oil vs wax.  I've
used exclusively dye inks and have had no problem with bleeding with
either oil or wax.