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Title: Hydrogen atom donor compounds as contrast enhancers for black-and-white photothermographic and thermographic elements

Hydrogen atom donor compounds are useful as contrast enhancers when used in combination with (i) hindered phenol developers, and (ii) trityl hydrazide and/or formyl-phenyl hydrazine co-developers, to produce ultra-high contrast black-and-white photothermographic and thermographic elements. The photothermographic and thermographic elements may be used as a photomask in a process where there is a subsequent exposure of an ultraviolet or short wavelength visible radiation-sensitive imageable medium.
 [1];  [2];  [3]
  1. (Hudson, WI)
  2. (Lake Elmo, MN)
  3. (Sawbridgeworth, GB2)
Issue Date:
OSTI Identifier:
Imation Corp (Woodbury, MN) INEEL
Patent Number(s):
US 5637449
Research Org:
Idaho National Engineering and Environmental Laboratory, Idaho Falls, ID
Country of Publication:
United States
hydrogen; atom; donor; compounds; contrast; enhancers; black-and-white; photothermographic; thermographic; elements; useful; combination; hindered; phenol; developers; ii; trityl; hydrazide; formyl-phenyl; hydrazine; co-developers; produce; ultra-high; photomask; process; subsequent; exposure; ultraviolet; wavelength; visible; radiation-sensitive; imageable; medium; hydrogen atom; visible radiation; hindered phenol; atom donor; donor compounds; contrast enhancers; /430/