Amine compounds as contrast enhancers for black-and-white photot

Details Amine compounds as contrast enhancers for black-and-white photot Amine compounds as contrast enhancers for black-and-white photot

1995-09-19

1996-08-13

Chea, Thorl

Radiation imagery chemistry: process, composition, or product th

Transfer procedure between image and image layer, image...

Diffusion transfer process, element, or identified image...

430264, 430300, 430348, 430350, 430617, 430619, G03C 1498

Patent

active

055455050

ABSTRACT:
Hydroxylamine, alkanolamine, and ammonium phthalamate 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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