Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Two or more radiation-sensitive layers containing other than...
Patent
1994-04-14
1995-08-29
Neville, Thomas R.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Two or more radiation-sensitive layers containing other than...
430139, 430571, 430967, 430567, 430621, G03C 146
Patent
active
054459273
ABSTRACT:
A photographic silver halide material for industrial radiography comprises a film support and on one or both sides thereof a silver halide emulsion rich in silver chloride and a silver halide emulsion rich in silver bromide either in admixture in the same layer or in contiguous layers. The ratio by weight of colloid binder, e.g. gelatin, to silver halide (expressed as silver nitrate) is from 3:10 to 6:10 and the amount of silver halide corresponds to from 6 g to 20 g of silver nitrate per square meter and per side. The material has been forehardened to an extent such that when it is immersed in demineralised water of 25.degree. C. for 3 minutes there is absorbed less than 2.5 g of water per gram of binder. The material can be processed within a total processing time of less than 5 minutes with a developer and fixer being substantially free from hardening agents and the fixer being substantially free from ammonium ions.
REFERENCES:
patent: 3140179 (1964-07-01), Russell
patent: 3152907 (1964-10-01), Godowsky et al.
patent: 3841872 (1974-10-01), Burness et al.
patent: 4414304 (1983-11-01), Dickerson
patent: 5112731 (1992-05-01), Miyasaki
Florens Raymond
Perdieus Pieter
Agfa-Gevaert N.V.
Neville Thomas R.
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