|Posted on Monday, October 24, 2005 - 05:24 am: ||
I have got some excellent results using thermanin, where the print develops sufficient purple colour and retain the text on receipts. Left overnight allows sufficient development time.
I am after some papers relating to ThermaNin but have been unable to come across any, it would be much appreciated if someone could please list some references or email them to:
|Posted on Wednesday, October 05, 2005 - 06:42 am: ||
Thanks for your comments. The indanedione seems to work well in the papers ive read. However the Canadians and us Brits dont seem to get as good results- perhaps humidity issues? I know israel have fully incorporated this procedure into their SOP's but here in the FSS the operational scientists seem to use a preparatory ethanol dip or DMAC (ignoring the H&S issues)which dont really give that good results. Im going to evaluate the thermanin and let you know how i get on. Thanks again!
|Posted on Saturday, October 01, 2005 - 01:34 am: ||
I have looked at thermanin and the results are ok but are no where near as good as you get when usin 1,2-indanedione as per the Stimac paper in JFI.
Give that a go? Any more questions you can contact me on firstname.lastname@example.org
|Posted on Friday, September 23, 2005 - 07:04 pm: ||
The results appear promising per the processed document and closeup from the BVDA Thermanin website.
At face value it appears to be another option for thermal paper processing, like 1,2-Indanedione reported by John Stimac (JFI Vol. 53, No. 3, May/Jun 2003). Here is an image displaying excellent detail and (luminescing) contrast from Stimac's article.
Many folks use the 1,2-Indanedione procedure from Alex Mankevich's (CBDIAI) processing guide.
BVDA also sells 1,2-Indanedione.
|Posted on Friday, September 23, 2005 - 10:59 am: ||
Has anyone had any experience/read any papers about the new ninhydrin product from BVDA? We all know what happens to thermal papers when it is immersed in ninhydrin. This new product replaces a water group with an alcohol which is reported to allow latent print development without the substrate going black
Any points/comments would be welcomed!!