Hydroxamic acid compounds as contrast enhancers for black-and-wh

Details Hydroxamic acid compounds as contrast enhancers for black-and-wh Hydroxamic acid compounds as contrast enhancers for black-and-wh

1995-09-19

1996-08-13

Chea, Thorl

Radiation imagery chemistry: process, composition, or product th

Silver halide colloid tanning process, composition, or product

430300, 430350, 430617, 430619, G03C 1498

Patent

active

055455077

ABSTRACT:
Hydroxamic acid 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.

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