Method of photothermographic imaging for transmission...

Details Method of photothermographic imaging for transmission... Method of photothermographic imaging for transmission...

2006-04-25

2006-04-25

Wells, Nikita (Department: 2881)

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Identified backing or protective layer containing

C430S505000, C430S350000, C430S353000

Reexamination Certificate

active

07033742

ABSTRACT:
The present invention is directed to a method of forming a positive image in a photothermographic film exposed by electrons in a transmission electron microscope to form a latent image in the film. The photothermographic film has at least one imaging layer comprising a potentially negative-working emulsion, but wherein thermal development of unexposed silver salts in exposed areas relative to unexposed areas is inhibited when thermally developing the imagewise exposed assembly, thereby producing a positive image. The present invention is also directed to the processing of the photothermographic film in which a positive image characterized by high speed and discrimination is formed in the film when heated above 150° C.

REFERENCES:
patent: 6548236 (2003-04-01), Irving et al.
patent: 6576414 (2003-06-01), Irving et al.

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