GB1424850A - Direct-positive silver halide photographic emulsions - Google Patents

Direct-positive silver halide photographic emulsions

Info

Publication number
GB1424850A
GB1424850A GB5864773A GB5864773A GB1424850A GB 1424850 A GB1424850 A GB 1424850A GB 5864773 A GB5864773 A GB 5864773A GB 5864773 A GB5864773 A GB 5864773A GB 1424850 A GB1424850 A GB 1424850A
Authority
GB
United Kingdom
Prior art keywords
direct
silver halide
completes
radical
give
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
GB5864773A
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.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film Co Ltd
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
Application filed by Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Publication of GB1424850A publication Critical patent/GB1424850A/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)
  • Nitrogen Condensed Heterocyclic Rings (AREA)
  • Thiazole And Isothizaole Compounds (AREA)
  • Nitrogen- Or Sulfur-Containing Heterocyclic Ring Compounds With Rings Of Six Or More Members (AREA)
  • Plural Heterocyclic Compounds (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)

Abstract

1424850 Heterocyclic compounds FUJI PHOTO FILM CO Ltd 18 Dec 1973 [19 Dec 1972] 58647/73 Heading C2C [Also in Division G2] Compounds of the general formula are made by reacting (i) 2,4-dinitrochlorobenzene with the compound made by condensing 4- phenylthiosemicarbazide with capric acid chloride to give a product (5) of the above formula where n is 2 and Z completes a 4-phenyl-5- nonyl-1,2,4-triazol-2-yl radical; (ii) picryl chloride with 4-mercapto-6-methyl-1,3,3a,7- tetrazaindene to give a compound (18) where n is 3 and Z completes a 6-methyl-1,3,3a,7- tetrazainden-4-yl radical and (iii) 2,4-dinitrochlorobenzene with 2-mercaptobenzothiazole to give a compound (19) where n is 2 and Z completes a benzothiazol-2-yl radical.
GB5864773A 1972-12-19 1973-12-18 Direct-positive silver halide photographic emulsions Expired GB1424850A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP47127575A JPS4984639A (en) 1972-12-19 1972-12-19

Publications (1)

Publication Number Publication Date
GB1424850A true GB1424850A (en) 1976-02-11

Family

ID=14963433

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5864773A Expired GB1424850A (en) 1972-12-19 1973-12-18 Direct-positive silver halide photographic emulsions

Country Status (4)

Country Link
US (1) US3910795A (en)
JP (1) JPS4984639A (en)
DE (1) DE2363308A1 (en)
GB (1) GB1424850A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0731381B2 (en) * 1986-09-05 1995-04-10 富士写真フイルム株式会社 Ultra-high contrast negative type silver halide photographic light-sensitive material
JPH0731386B2 (en) * 1986-09-19 1995-04-10 富士写真フイルム株式会社 Direct positive type silver halide photographic light-sensitive material
JPS6375738A (en) * 1986-09-19 1988-04-06 Fuji Photo Film Co Ltd Direct positive type silver halide photographic sensitive material
JPH0612406B2 (en) * 1986-11-14 1994-02-16 富士写真フイルム株式会社 Ultra-high contrast negative type silver halide photographic light-sensitive material
EP0283040B1 (en) * 1987-03-20 1995-06-21 Fuji Photo Film Co., Ltd. Silver halide photographic material
JP2604157B2 (en) * 1987-05-28 1997-04-30 富士写真フイルム株式会社 Silver halide photographic material
DE69520927T2 (en) * 1994-10-14 2001-11-15 Agfa-Gevaert N.V., Mortsel Receiving element for thermal dye transfer
EP0713133B1 (en) * 1994-10-14 2001-05-16 Agfa-Gevaert N.V. Receiving element for use in thermal transfer printing
US6319660B1 (en) 1998-12-28 2001-11-20 Eastman Kodak Company Color photographic element containing speed improving compound
WO2007011759A2 (en) * 2005-07-15 2007-01-25 Kalypsys, Inc. Inhibitors of mitotic kinesin

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE543288A (en) * 1954-12-10
US2947629A (en) * 1958-09-17 1960-08-02 Eastman Kodak Co Nitrosopyrimidine desensitizing compounds and photographic emulsions containing them
US3615607A (en) * 1967-03-13 1971-10-26 Takako Watatani Method of desensitizing light-sensitive silver halide photographic materials with cycloheptimidazole derivatives

Also Published As

Publication number Publication date
DE2363308A1 (en) 1974-06-27
US3910795A (en) 1975-10-07
JPS4984639A (en) 1974-08-14

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee
PE20 Patent expired after termination of 20 years

Effective date: 19931217