[NHCOLL-L:441] RE: Archival stamp pad inks

[Panza, Robin]

Archival invisible ink, huh?  I imagine it's fade-resistant, but who needs
long life in invisibility?  Or does non-archival invisible ink un-fade over
time?

As for red ink, that's the problem.  I don't know if something new has been
found, but red has always been considered a "fugitive" color, never
permanent.  There are some red "India" inks that claim to be permanent, but
I have no idea whether they're caustic or have other problems.

Robin

Robin K Panza                         panzar at carnegiemuseums.org
Collection Manager, Section of Birds          ph:  412-622-3255
Carnegie Museum of Natural History       fax: 412-622-8837
4400 Forbes Ave.
Pittsburgh  PA  15213-4008  USA



-----Original Message-----
From: Kathie Hodge [mailto:kh11 at CORNELL.EDU]
Sent: Friday, 11 February, 2000 11:13 AM
To: Nhcoll-l at lists.yale.edu
Subject: [NHCOLL-L:440] RE: Archival stamp pad inks


Thanks for the tips on archival black ink.  We'll go with Phillip's 
Process Corp.'s black actinic ink, which is apparently a very 
long-lived magnesium dioxide formulation (will survive a nuclear 
blast!).  It's available through University Products, as Carol 
Brynjolfson pointed out.

No really good archival reds seem to be available; we've had 
significant fading of red inks used in the past 50 years, even when 
stored in darkness.  Phillip's (in Rochester, NY) will make an ochre 
or a yellow titanium-based archival ink.  And interestingly, they 
also make (or used to) an archival invisible ink.  Perfect for all 
your secret projects!

thanks for your suggestions,
Kathie T. Hodge
Assistant Professor of Mycology
Dept. of Plant Pathology, and
L.H. Bailey Hortorium
401 Plant Science Bldg.
Cornell University
Ithaca, NY 14853

phone: 607-255-5356
fax: 607-255-4471
email: kh11 at cornell.edu