N-acyl-hydrazine compounds as contrast enhancers for black-and-white photothermographic and thermographic elements
US5558983A · kind A · utility
27Cited by
7References
19Claims
0Family size
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Key dates
| Filing date | Sep 19, 1995 |
| Grant date | Sep 24, 1996 |
| Priority date | — |
| Expiry date | Sep 19, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F1/54
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
N-acyl-hydrazine 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.