GB1199645A – Photographic Silver Halide Emulsions
– Google Patents
GB1199645A – Photographic Silver Halide Emulsions
– Google Patents
Photographic Silver Halide Emulsions
Info
Publication number
GB1199645A
GB1199645A
GB54737/67A
GB5473767A
GB1199645A
GB 1199645 A
GB1199645 A
GB 1199645A
GB 54737/67 A
GB54737/67 A
GB 54737/67A
GB 5473767 A
GB5473767 A
GB 5473767A
GB 1199645 A
GB1199645 A
GB 1199645A
Authority
GB
United Kingdom
Prior art keywords
silver halide
rhodium
emulsion
cadmium
bromide
Prior art date
1966-12-02
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB54737/67A
Inventor
Nelson Robert Sidebotham
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
1966-12-02
Filing date
1967-12-01
Publication date
1970-07-22
1967-12-01
Application filed by Eastman Kodak Co
filed
Critical
Eastman Kodak Co
1970-07-22
Publication of GB1199645A
publication
Critical
patent/GB1199645A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
-1
Silver Halide
Chemical class
0.000
title
abstract
7
239000000839
emulsion
Substances
0.000
title
abstract
6
229910052709
silver
Inorganic materials
0.000
title
abstract
6
239000004332
silver
Substances
0.000
title
abstract
6
KPWJBEFBFLRCLH-UHFFFAOYSA-L
cadmium bromide
Chemical compound
Br[Cd]Br
KPWJBEFBFLRCLH-UHFFFAOYSA-L
0.000
abstract
6
150000003283
rhodium
Chemical class
0.000
abstract
3
QIGBRXMKCJKVMJ-UHFFFAOYSA-N
Hydroquinone
Chemical compound
OC1=CC=C(O)C=C1
QIGBRXMKCJKVMJ-UHFFFAOYSA-N
0.000
abstract
2
YKYOUMDCQGMQQO-UHFFFAOYSA-L
cadmium dichloride
Chemical compound
Cl[Cd]Cl
YKYOUMDCQGMQQO-UHFFFAOYSA-L
0.000
abstract
2
IOLCXVTUBQKXJR-UHFFFAOYSA-M
potassium bromide
Chemical compound
[K+].[Br-]
IOLCXVTUBQKXJR-UHFFFAOYSA-M
0.000
abstract
2
ZMZDMBWJUHKJPS-UHFFFAOYSA-M
Thiocyanate anion
Chemical compound
[S-]C#N
ZMZDMBWJUHKJPS-UHFFFAOYSA-M
0.000
abstract
1
239000003795
chemical substances by application
Substances
0.000
abstract
1
230000029087
digestion
Effects
0.000
abstract
1
230000000694
effects
Effects
0.000
abstract
1
ZMZDMBWJUHKJPS-UHFFFAOYSA-N
hydrogen thiocyanate
Natural products
SC#N
ZMZDMBWJUHKJPS-UHFFFAOYSA-N
0.000
abstract
1
CMCWWLVWPDLCRM-UHFFFAOYSA-N
phenidone
Chemical compound
N1C(=O)CCN1C1=CC=CC=C1
CMCWWLVWPDLCRM-UHFFFAOYSA-N
0.000
abstract
1
238000001556
precipitation
Methods
0.000
abstract
1
238000002360
preparation method
Methods
0.000
abstract
1
229910052703
rhodium
Inorganic materials
0.000
abstract
1
239000010948
rhodium
Substances
0.000
abstract
1
MHOVAHRLVXNVSD-UHFFFAOYSA-N
rhodium atom
Chemical compound
[Rh]
MHOVAHRLVXNVSD-UHFFFAOYSA-N
0.000
abstract
1
239000002904
solvent
Substances
0.000
abstract
1
230000000087
stabilizing effect
Effects
0.000
abstract
1
150000003568
thioethers
Chemical class
0.000
abstract
1
Classifications
G—PHYSICS
G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
G03C1/00—Photosensitive materials
G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
G03C1/34—Fog-inhibitors; Stabilisers; Agents inhibiting latent image regression
G—PHYSICS
G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
G03C1/00—Photosensitive materials
G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
G03C1/08—Sensitivity-increasing substances
G03C1/09—Noble metals or mercury; Salts or compounds thereof; Sulfur, selenium or tellurium, or compounds thereof, e.g. for chemical sensitising
Abstract
1,199,645. Photographic silver halide emulsions. EASTMAN KODAK CO. Dec.1, 1967 [Dec.2, 1966], No.54737/67. Heading G2C. In the preparation of a photographic silver halide emulsion, the silver halide grains are precipitated in the presence of a rhodium salt and thereafter a stabilizing amount of cadmium bromide is added. A silver halide solvent such as a water-soluble thiocyanate or an organic thioether may be present during precipitation or digestion of the silver halide grains. The emulsion may be chemically and optically sensitized and coated on to a support. Developing agents such as hydroquinone and 1-phenyl-3-pyrazolidone may be present in the emulsion or in a contiguous layer. Rhodium salts specified are rhodium ammonium chloride and rhodium mono-, di- and trichlorides. The cadmium bromide may be added just before the emulsion is coated and its effect is compared with that of cadmium chloride and potassium bromide. The use of cadmium bromide prevents the increased contrast obtained with the rhodium salt being lost on storage.
GB54737/67A
1966-12-02
1967-12-01
Photographic Silver Halide Emulsions
Expired
GB1199645A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
US59861566A
1966-12-02
1966-12-02
Publications (1)
Publication Number
Publication Date
GB1199645A
true
GB1199645A
(en)
1970-07-22
Family
ID=24396278
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB54737/67A
Expired
GB1199645A
(en)
1966-12-02
1967-12-01
Photographic Silver Halide Emulsions
Country Status (4)
Country
Link
US
(1)
US3488709A
(en)
BE
(1)
BE707378A
(en)
DE
(1)
DE1597561A1
(en)
GB
(1)
GB1199645A
(en)
Families Citing this family (12)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
CA995958A
(en)
*
1971-12-28
1976-08-31
Keisuke Shiba
Silver halide photographic emulsion for use in flash exposure
JPS5232569B2
(en)
*
1972-08-31
1977-08-23
US3891442A
(en)
*
1972-12-04
1975-06-24
Eastman Kodak Co
Lithographic materials containing metal complexes
JPS5536840A
(en)
*
1978-09-07
1980-03-14
Konishiroku Photo Ind Co Ltd
Silver halide photographic material
DE2931468A1
(en)
*
1979-08-02
1981-03-26
Agfa-Gevaert Ag, 51373 Leverkusen
PHOTOGRAPHIC EMULSION WITH STABILIZER, METHOD FOR PRODUCTION, PHOTOGRAPHIC MATERIALS AND METHOD FOR PRODUCING PHOTOGRAPHIC IMAGES
JPS5729041A
(en)
*
1980-07-29
1982-02-16
Fuji Photo Film Co Ltd
Photographic sensitive silver halide material
JPS58190943A
(en)
*
1982-04-30
1983-11-08
Fuji Photo Film Co Ltd
Silver halide photosensitive material and its developing method
US4430426A
(en)
1982-06-04
1984-02-07
Minnesota Mining And Manufacturing Company
Stabilization of silver halide emulsions
JPS59210437A
(en)
*
1983-05-16
1984-11-29
Konishiroku Photo Ind Co Ltd
Photosensitive silver halide material
JPS6080841A
(en)
*
1983-10-11
1985-05-08
Fuji Photo Film Co Ltd
Photosensitive silver halide material
JPS6083028A
(en)
*
1983-10-13
1985-05-11
Fuji Photo Film Co Ltd
Photosensitive silver halide material and formation of very high contrast negative image using it
US4661438A
(en)
1985-04-04
1987-04-28
Eastman Kodak Company
Quaternized tellurium salt fog inhibiting agents for silver halide photography
Family Cites Families (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US2717833A
(en)
*
1952-05-12
1955-09-13
Sperry Rand Corp
Direct positive emulsions
US2839405A
(en)
*
1955-03-08
1958-06-17
Eastman Kodak Co
Inorganic salt antifoggants for photographic emulsions
1966
1966-12-02
US
US598615A
patent/US3488709A/en
not_active
Expired – Lifetime
1967
1967-11-30
BE
BE707378D
patent/BE707378A/xx
unknown
1967-12-01
GB
GB54737/67A
patent/GB1199645A/en
not_active
Expired
1967-12-01
DE
DE19671597561
patent/DE1597561A1/en
active
Pending
Also Published As
Publication number
Publication date
DE1597561A1
(en)
1970-05-06
BE707378A
(en)
1968-04-01
US3488709A
(en)
1970-01-06
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Legal Events
Date
Code
Title
Description
1970-12-02
PS
Patent sealed [section 19, patents act 1949]
1981-07-15
PCNP
Patent ceased through non-payment of renewal fee
