GB1388847A - Direct-positive silver halide emulsions - Google Patents

Direct-positive silver halide emulsions

Info

Publication number
GB1388847A
GB1388847A GB3601771A GB3601771A GB1388847A GB 1388847 A GB1388847 A GB 1388847A GB 3601771 A GB3601771 A GB 3601771A GB 3601771 A GB3601771 A GB 3601771A GB 1388847 A GB1388847 A GB 1388847A
Authority
GB
United Kingdom
Prior art keywords
dihydropyrimidine
trimethyl
direct
silver halide
halide emulsions
Prior art date
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
GB3601771A
Other languages
English (en)
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 NV
Agfa Gevaert AG
Original Assignee
Agfa Gevaert NV
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.)
Filing date
Publication date
Priority to BE785847D priority Critical patent/BE785847A/nl
Application filed by Agfa Gevaert NV, Agfa Gevaert AG filed Critical Agfa Gevaert NV
Priority to GB3601771A priority patent/GB1388847A/en
Priority to US00269861A priority patent/US3779776A/en
Priority to FR7225022A priority patent/FR2147985B1/fr
Priority to CA146,954A priority patent/CA1000100A/en
Priority to DE2237036A priority patent/DE2237036A1/de
Publication of GB1388847A publication Critical patent/GB1388847A/en
Expired legal-status Critical Current

Links

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
    • G03C1/48515—Direct positive emulsions prefogged
    • G03C1/48523—Direct positive emulsions prefogged characterised by the desensitiser

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Plural Heterocyclic Compounds (AREA)
GB3601771A 1971-07-30 1971-07-30 Direct-positive silver halide emulsions Expired GB1388847A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
BE785847D BE785847A (nl) 1971-07-30 Direct-positieve zilverhalogenide-emulsies met kleurstofvormers
GB3601771A GB1388847A (en) 1971-07-30 1971-07-30 Direct-positive silver halide emulsions
US00269861A US3779776A (en) 1971-07-30 1972-07-07 Fogged, direct-positive silver halide emulsion containing a color coupler and a heterocyclic mercaptan desensitizer
FR7225022A FR2147985B1 (de) 1971-07-30 1972-07-10
CA146,954A CA1000100A (en) 1971-07-30 1972-07-12 Direct-positive silver halide emulsions
DE2237036A DE2237036A1 (de) 1971-07-30 1972-07-28 Direktpositiv-silberhalogenidemulsionen mit farbkupplern

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3601771A GB1388847A (en) 1971-07-30 1971-07-30 Direct-positive silver halide emulsions

Publications (1)

Publication Number Publication Date
GB1388847A true GB1388847A (en) 1975-03-26

Family

ID=10384047

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3601771A Expired GB1388847A (en) 1971-07-30 1971-07-30 Direct-positive silver halide emulsions

Country Status (6)

Country Link
US (1) US3779776A (de)
BE (1) BE785847A (de)
CA (1) CA1000100A (de)
DE (1) DE2237036A1 (de)
FR (1) FR2147985B1 (de)
GB (1) GB1388847A (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1453833A (en) * 1973-01-25 1976-10-27 Agfa Gevaert Direct-positive silver halide emulsions
US4273862A (en) * 1977-06-11 1981-06-16 Mitsubishi Paper Mills, Ltd. Direct-positive silver halide photographic sensitive materials
JPS5862652A (ja) * 1981-10-08 1983-04-14 Konishiroku Photo Ind Co Ltd 直接ポジカラ−画像の形成方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE543288A (de) * 1954-12-10
US3501305A (en) * 1966-03-11 1970-03-17 Eastman Kodak Co Monodispersed photographic reversal emulsions

Also Published As

Publication number Publication date
FR2147985B1 (de) 1978-03-24
BE785847A (nl) 1973-01-05
US3779776A (en) 1973-12-18
DE2237036A1 (de) 1973-02-08
CA1000100A (en) 1976-11-23
FR2147985A1 (de) 1973-03-11

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee