GB1462212A – Direct-positive photographic material
– Google Patents
GB1462212A – Direct-positive photographic material
– Google Patents
Direct-positive photographic material
Info
Publication number
GB1462212A
GB1462212A
GB2784674A
GB2784674A
GB1462212A
GB 1462212 A
GB1462212 A
GB 1462212A
GB 2784674 A
GB2784674 A
GB 2784674A
GB 2784674 A
GB2784674 A
GB 2784674A
GB 1462212 A
GB1462212 A
GB 1462212A
Authority
GB
United Kingdom
Prior art keywords
mol
grains
silver halide
silver
photographic material
Prior art date
1973-06-28
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
GB2784674A
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.)
Agfa Gevaert AG
Original Assignee
Agfa Gevaert AG
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.)
1973-06-28
Filing date
1974-06-24
Publication date
1977-01-19
1974-06-24
Application filed by Agfa Gevaert AG
filed
Critical
Agfa Gevaert AG
1977-01-19
Publication of GB1462212A
publication
Critical
patent/GB1462212A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
G03C1/485—Direct positive emulsions
G03C1/48538—Direct positive emulsions non-prefogged, i.e. fogged after imagewise exposure
G03C1/48569—Direct positive emulsions non-prefogged, i.e. fogged after imagewise exposure characterised by the emulsion type/grain forms, e.g. tabular grain emulsions
G03C1/48576—Direct positive emulsions non-prefogged, i.e. fogged after imagewise exposure characterised by the emulsion type/grain forms, e.g. tabular grain emulsions core-shell grain emulsions
Abstract
1462212 Photographic direct positive silver halide materials AGFA-GEVAERT AG 24 June 1974 [28 June 1973] 27846/74 Heading G2C Photographic material for producing direct positive images by fogging development contains at least one silver halide emulsion layer containing unfogged hetero disperse silver halide grains i.e. at least 10 wt. per cent of the grains have a diameter which deviates by at least 40% from the average grain diameter, the said grains being unsensitized or only slightly chemically sensitized on their surface and having a layered grain structure comprising a core of at least 50 mol. % silver bromide and an intermediate or outer layer of at least 20 mol. % silver chloride, the total silver chloride in the grain as a whole being less than 30 mol. %.
GB2784674A
1973-06-28
1974-06-24
Direct-positive photographic material
Expired
GB1462212A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
DE2332802A
DE2332802C2
(en)
1973-06-28
1973-06-28
Direct positive photographic recording material
Publications (1)
Publication Number
Publication Date
GB1462212A
true
GB1462212A
(en)
1977-01-19
Family
ID=5885276
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB2784674A
Expired
GB1462212A
(en)
1973-06-28
1974-06-24
Direct-positive photographic material
Country Status (10)
Country
Link
US
(1)
US3957488A
(en)
JP
(1)
JPS581415B2
(en)
BE
(1)
BE816660A
(en)
CA
(1)
CA1037762A
(en)
CH
(1)
CH594905A5
(en)
DE
(1)
DE2332802C2
(en)
FR
(1)
FR2235388B1
(en)
GB
(1)
GB1462212A
(en)
IT
(1)
IT1016179B
(en)
SU
(1)
SU543363A3
(en)
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US4496652A
(en)
*
1978-12-26
1985-01-29
E. I. Du Pont De Nemours And Company
Silver halide crystals with two surface types
Families Citing this family (14)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US4070190A
(en)
*
1973-09-03
1978-01-24
E. I. Du Pont De Nemours And Company
Process for producing photographic silver halide emulsions having a core/shell structure
JPS583535B2
(en)
*
1976-11-25
1983-01-21
コニカ株式会社
Direct positive image formation method
JPS6055820B2
(en)
*
1979-03-26
1985-12-06
コニカ株式会社
Direct positive silver halide photographic material
JPS5945132B2
(en)
*
1979-04-23
1984-11-05
富士写真フイルム株式会社
Method for producing photosensitive silver halide crystals
JPS56121030A
(en)
*
1980-02-27
1981-09-22
Mitsubishi Paper Mills Ltd
Direct positive silver halide photographic sensitive material
DE3229999A1
(en)
*
1982-08-12
1984-02-16
Agfa-Gevaert Ag, 5090 Leverkusen
PHOTOGRAPHIC SILVER HALOGEN EMULSION
DE3681347D1
(en)
1985-05-31
1991-10-17
Konishiroku Photo Ind
METHOD FOR PRODUCING A DIRECTLY POSITIVE COLOR IMAGE.
JPS6371839A
(en)
*
1986-06-05
1988-04-01
Fuji Photo Film Co Ltd
Silver halide photographic sensitive material
JPS63239439A
(en)
*
1986-11-25
1988-10-05
Konica Corp
Direct positive silver halide photographic sensitive material
JPS6459349A
(en)
*
1987-08-31
1989-03-07
Konishiroku Photo Ind
Direct positive type silver halide photographic sensitive material
JPH0690437B2
(en)
1987-12-02
1994-11-14
富士写真フイルム株式会社
Direct positive photographic material
JP2558514B2
(en)
*
1988-11-02
1996-11-27
富士写真フイルム株式会社
Method of forming positive image
US5155017A
(en)
*
1989-01-09
1992-10-13
Fuji Photo Film Co., Ltd.
Silver halide photographic material
GB9603658D0
(en)
*
1996-02-21
1996-04-17
Minnesota Mining & Mfg
Photographic materials with improved image tone
Family Cites Families (5)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB635841A
(en)
*
1947-05-13
1950-04-19
Kodak Ltd
Improvements in photographic silver halide emulsions
US2497875A
(en)
*
1947-10-17
1950-02-21
Eastman Kodak Co
Direct positive photographs using aerial fogging developer
US3206313A
(en)
*
1961-05-15
1965-09-14
Eastman Kodak Co
Chemically sensitized emulsions having low surface sensitivity and high internal sensitivity
US3501305A
(en)
*
1966-03-11
1970-03-17
Eastman Kodak Co
Monodispersed photographic reversal emulsions
US3761266A
(en)
*
1971-03-10
1973-09-25
Eastman Kodak Co
Silver halide emulsions predominantly chloride containing silver halide grains with surfaces chemically sensitized and interiors free fromchemical sensitization and the use thereof in reversal processes
1973
1973-06-28
DE
DE2332802A
patent/DE2332802C2/en
not_active
Expired
1974
1974-06-21
BE
BE1006039A
patent/BE816660A/en
unknown
1974-06-24
GB
GB2784674A
patent/GB1462212A/en
not_active
Expired
1974-06-24
US
US05/482,437
patent/US3957488A/en
not_active
Expired – Lifetime
1974-06-26
CA
CA203,455A
patent/CA1037762A/en
not_active
Expired
1974-06-26
SU
SU2037398A
patent/SU543363A3/en
active
1974-06-26
IT
IT51735/74A
patent/IT1016179B/en
active
1974-06-27
CH
CH885174A
patent/CH594905A5/xx
not_active
IP Right Cessation
1974-06-27
JP
JP49072876A
patent/JPS581415B2/en
not_active
Expired
1974-06-28
FR
FR7422796A
patent/FR2235388B1/fr
not_active
Expired
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US4496652A
(en)
*
1978-12-26
1985-01-29
E. I. Du Pont De Nemours And Company
Silver halide crystals with two surface types
Also Published As
Publication number
Publication date
FR2235388B1
(en)
1978-05-26
JPS5038525A
(en)
1975-04-10
JPS581415B2
(en)
1983-01-11
DE2332802C2
(en)
1984-09-20
US3957488A
(en)
1976-05-18
CA1037762A
(en)
1978-09-05
IT1016179B
(en)
1977-05-30
SU543363A3
(en)
1977-01-15
BE816660A
(en)
1974-12-23
CH594905A5
(en)
1978-01-31
DE2332802A1
(en)
1975-01-23
FR2235388A1
(en)
1975-01-24
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(en)
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(en)
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(en)
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(en)
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Photographic silver salt emulsion for the production of direct positive images
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(en)
1970-01-28
Photographic Material.
Legal Events
Date
Code
Title
Description
1977-06-01
PS
Patent sealed [section 19, patents act 1949]
1979-08-01
746
Register noted ‘licences of right’ (sect. 46/1977)
1985-02-20
PCNP
Patent ceased through non-payment of renewal fee
