FIELD: light-sensitive materials.
SUBSTANCE: invention provides a method of preparing infrachromatic photographic material for use in photochemical industry to record information under low heat field illumination conditions and in telephotography. Method consists in coating underlayered substrate of silver bromide-iodide gelatin emulsion with protective layer composition based on gelatin and silver nitrate followed by drying of layers, said silver bromide-iodide gelatin emulsion being supplemented with 15-30% (on the weight of dry gelatin) of latex based on polymer compound: (i) butyl acrylate/diacetoneacrylamide/styrene/methacrylic acid copolymer at monomer ratio 60:30:4:6 or (ii) butyl acrylate/styrene/methacrylic acid copolymer at monomer ratio 7:0.5:0.5, or (iii) butyl acrylate/hydroxy-3-chloropropyl methacrylate at monomer ratio 7:2. Furthermore, protective layer composition can further be supplemented with latex based on butyl acrylate/styrene/methacrylic acid copolymer at monomer ratio 19:0.5:0.5 in amount 5-12% of the weight of dry gelatin.
EFFECT: increased sensibility of photographic material for emission within a wavelength range of 650-950 nm and prolonged warranty storage period.
2 cl, 1 tbl, 10 ex
Title | Year | Author | Number |
---|---|---|---|
METHOD OF MANUFACTURING SILVER BROMIDE PHOTOGRAPHIC EMULSION | 2002 |
|
RU2224277C1 |
SILVER HALIDE PHOTOGRAPHIC MATERIAL FOR RADIOGRAPHY | 2001 |
|
RU2195010C1 |
PROCESS OF MANUFACTURE OF AMMONIA BROMINE-IODINE-SILVER PHOTOGRAPHIC EMULSION | 1989 |
|
RU2045767C1 |
SILVER HALIDE PHOTOGRAPHIC MATERIAL | 2000 |
|
RU2184387C1 |
SILVER HALIDE PHOTOGRAPHIC MATERIAL FOR MEDICAL RADIOGRAPHY | 2001 |
|
RU2195011C1 |
PROCESS OF MANUFACTURE OF BROMINE-IODINE-SILVER PHOTOGRAPHIC EMULSION AND PHOTOGRAPHIC MATERIAL BASED ON IT | 2002 |
|
RU2215316C1 |
METHOD OF PREPARING BROMINE-IODINE-SILVER PHOTOGRAPHIC EMULSION | 1990 |
|
SU1774751A1 |
METHOD OF PRODUCING GELATINOUS BROMIODOSILVER PHOTOGRAPHIC EMULSION | 1980 |
|
SU959543A1 |
METHOD OF MANUFACTURING AMMONIACAL SILVER BROMIDE/IODIDE EMULSIONS | 1986 |
|
RU2092884C1 |
METHOD OF SPECTRAL SENSIBILIZATION OF BROMOIODOSILVER PHOTOGRAPHIC EMULSION | 1987 |
|
SU1540528A1 |
Authors
Dates
2007-09-10—Published
1989-02-16—Filed