Adsorbable arylhydrazides and applications thereof to silver halide photography
US4459347A · kind A · utility
10Cited by
16References
34Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 11, 1983 |
| Grant date | Jul 10, 1984 |
| Priority date | — |
| Expiry date | May 11, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/061
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The use of oxythioamido substituted arylhydrazides in producing images in silver halide photographic elements is disclosed. The oxythioamido substituted arylhydrazide can be incorporated in photographic silver halide emulsions. The oxythioamido substituent is capable of promoting adsorption of the arylhydrazide to silver halide grain surfaces. In negative working surface latent image forming emulsions the oxythioamido substituted arylhydrazides permit higher speeds to be achieved. In direct positive internal latent image forming emulsions increased nucleation activity can be achieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.