|Posted on Friday, April 07, 2006 - 05:14 pm: ||
Another process that works on thermal paper is RTX (Ruthenium Tetroxide). It is best if you fume it rather than pour the RTX directly onto the paper. The prints I developed this way came out weak, but I did not try to develop them further by fuming them longer.
|Posted on Tuesday, April 13, 2004 - 09:18 pm: ||
Re Jenni Mouer's request in respect of thermal paper, I am about to commence a research paper on the use of Therma Nin verses 'normal' ninhydrin. I have some stuff on this (namely an artical from the Journal of Forensic Identification by Jon Stimac dated 2003 and The Detail No 129, Jan 04).
Has anyone done any work comparing these two methods, particularly in respect of 'real life' prints ie. ones from jobs weeks or months old (as opposed to yesterday, which you did yourself!!!!).
Any help will be appreciated. Replies please to firstname.lastname@example.org
New Zealand Police
|Posted on Monday, April 12, 2004 - 01:27 pm: ||
The JFI had an article last year on this. Use Muriatic Acid. Just hold the reciept over the open container where the fumes get to it and latents will develop on the treated/emulsion side of the paper. The latents we developed were of very good quality, but be careful though, you can over fume it.
|Posted on Wednesday, March 31, 2004 - 02:27 pm: ||
I could give some references, but easier if you go to www.redwop.com (Lightning Powder website) and link to the new 'Reference Index' service. Enter 'thermal' as a keyword search and you will get several citations on the subject. One excellent reference is JFI article by Jon Stimac in Oregon.
|Posted on Wednesday, March 31, 2004 - 08:53 am: ||
I am currently in the middle of researching processing thermal paper for latent prints.
I am trying to find some good background material on thermal paper itself - i.e. how it is made, how it works, etc... and I am having a hard time finding that information in layman terms. If anyone can point me in the right direction or has information about thermal paper I would appreciate any help.
Forensic Scientist II - VADFS