GB661645A - Improvements in sensitive photographic emulsions - Google Patents

Improvements in sensitive photographic emulsions

Info

Publication number
GB661645A
GB661645A GB29569/49A GB2956949A GB661645A GB 661645 A GB661645 A GB 661645A GB 29569/49 A GB29569/49 A GB 29569/49A GB 2956949 A GB2956949 A GB 2956949A GB 661645 A GB661645 A GB 661645A
Authority
GB
United Kingdom
Prior art keywords
emulsion
speed
compound
triethylene tetramine
tetraethylene pentamine
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
GB29569/49A
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.)
Kodak Ltd
Original Assignee
Kodak 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 Kodak Ltd filed Critical Kodak Ltd
Publication of GB661645A publication Critical patent/GB661645A/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
    • G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
    • G03C1/08—Sensitivity-increasing substances
    • G03C1/10—Organic substances

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

661,645. Photographic emulsions. KODAK, Ltd. Nov. 18, 1949 [Nov. 18, 1948], No. 29569/49. Class 98 (ii). The speed of a light-sensitive silver halide emulsion is increased by the incorporation of a compound of the general formula H 2 N(RNH) n RNH 2 , wherein n is 1 to 5 (preferably 1 to 3) and R is an alkylene chain of from 2 to 4 carbon atoms, or a water-soluble non-desensitizing salt thereof. Compounds specified are diethylene triamine, triethylene tetramine, and tetraethylene pentamine. The emulsion may also contain a sulphur sensitizer incorporated before, simultaneously with, or after the speedincreasing compound, and may also contain an optical sensitizer. The compound may be added during digestion of the emulsion, so that further digestion occurs after the addition. At least one emulsion layer of a colour photographic multilayer material may be so prepared. In example 1, the effect on the fog, gamma, and speed of a gelatine emulsion peptized with a gelatine derivative as described in Specification 649,545, of additions of diethylene triamine, triethylene tetramine, and tetraethylene pentamine is shown in a table. In example 2, the effect of additions of allyl thiourea, of allyl thiourea and triethylene tetramine, and of allyl thiourea and tetraethylene pentamine is similarly shown in a table. In examples 3 and 4, similar tables are given. The speed increase is effective at a fairly low pH, such. as 6.0, and the increase obtained with a sulphur sensitized emulsion is usually considerably greater than would be expected from the speed increases obtained by the use of the individual sensitizers. The emulsion binder may also be polyvinyl alcohol, a copolymer of polyvinyl alcohol, or a partially hydrolysed cellulose ester (e.g. cellulose acetate). Specification 235,211, [Class 98 (ii)], also is referred to.
GB29569/49A 1948-11-18 1949-11-18 Improvements in sensitive photographic emulsions Expired GB661645A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US60818A US2518698A (en) 1948-11-18 1948-11-18 Chemical sensitization of photographic emulsions

Publications (1)

Publication Number Publication Date
GB661645A true GB661645A (en) 1951-11-21

Family

ID=22031936

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29569/49A Expired GB661645A (en) 1948-11-18 1949-11-18 Improvements in sensitive photographic emulsions

Country Status (4)

Country Link
US (1) US2518698A (en)
BE (1) BE492214A (en)
FR (1) FR1006813A (en)
GB (1) GB661645A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE972720C (en) * 1952-11-08 1959-09-10 Eastman Kodak Co Sensitized photographic material

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2740713A (en) * 1952-04-26 1956-04-03 Warren Joel Sensitization of photographic emulsions
US3266898A (en) * 1958-09-03 1966-08-16 Levy Marilyn Pre-development latensification using polyalkylene amines
US3113026A (en) * 1959-01-19 1963-12-03 Gen Aniline & Film Corp Polyvinyl alcohol photographic silver halide emulsions
US3026203A (en) * 1959-08-17 1962-03-20 Du Pont Silver halide photographic emulsions containing linear polyamine sensitizing agents
NL107219C (en) * 1959-09-24
US3206313A (en) * 1961-05-15 1965-09-14 Eastman Kodak Co Chemically sensitized emulsions having low surface sensitivity and high internal sensitivity
US3369905A (en) * 1963-03-19 1968-02-20 Eastman Kodak Co Photographic silver halide emulsions containing polyamine sensitizing agents
JPS556214B2 (en) * 1972-01-07 1980-02-14
BE794188A (en) * 1972-01-26 1973-07-18 Agfa Gevaert Nv IMPROVED PHOTOGRAPHIC SILVER HALOGENIDE EMULSIONS
JPS5081537A (en) * 1973-11-20 1975-07-02
DE3203554A1 (en) * 1981-02-03 1982-10-14 Fuji Photo Film Co., Ltd., Minami-Ashigara, Kanagawa METHOD FOR PRODUCING A PHOTOGRAPHIC IMAGE
JPS59137946A (en) 1983-01-28 1984-08-08 Fuji Photo Film Co Ltd Silver halide photosensitive material
JPS59188641A (en) 1983-04-11 1984-10-26 Fuji Photo Film Co Ltd Silver halide photographic emulsion
JPS61245151A (en) 1985-04-23 1986-10-31 Konishiroku Photo Ind Co Ltd Silver halide photographic sensitive material
JPS61250643A (en) 1985-04-30 1986-11-07 Konishiroku Photo Ind Co Ltd Silver halide photographic sensitive material
JPS61250645A (en) 1985-04-30 1986-11-07 Konishiroku Photo Ind Co Ltd Silver halide photographic sensitive material
DE3682128D1 (en) 1985-07-17 1991-11-28 Konishiroku Photo Ind PHOTOGRAPHIC SILVER HALOGENID MATERIAL.
JPS62175753A (en) * 1986-01-29 1987-08-01 Fuji Photo Film Co Ltd Color image forming method
JP2604045B2 (en) * 1989-12-28 1997-04-23 富士写真フイルム株式会社 Silver halide emulsion and silver halide photographic material using the same
EP0476327B1 (en) 1990-08-20 1999-11-17 Fuji Photo Film Co., Ltd. Data-retainable photographic film product and process for producing color print
JP2777949B2 (en) 1992-04-03 1998-07-23 富士写真フイルム株式会社 Silver halide color photographic materials
JP2824717B2 (en) 1992-07-10 1998-11-18 富士写真フイルム株式会社 Processing method of silver halide photographic material
EP0589460B1 (en) 1992-09-24 2000-08-09 Fuji Photo Film Co., Ltd. Method for processing a black & white silver halide light-sensitive material
JPH08190199A (en) 1994-10-18 1996-07-23 Minnesota Mining & Mfg Co <3M> Photosensitive element
US5468588A (en) 1994-10-18 1995-11-21 Minnesota Mining And Manufacturing Company Process for manufacturing diffusion transfer printing plates
US5582957A (en) * 1995-03-28 1996-12-10 Eastman Kodak Company Resuspension optimization for photographic nanosuspensions
US6040129A (en) * 1999-04-09 2000-03-21 Eastman Kodak Company Photographic emulsion having an improved speed, photographic element containing said emulsion, and method
US20130161936A1 (en) 2010-09-17 2013-06-27 Fujifilm Manufacturing Europe B.V. Photographic Paper
GB202006061D0 (en) 2020-04-24 2020-06-10 Fujifilm Mfg Europe Bv Photographic paper

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB496049A (en) * 1937-04-19 1938-11-21 Ig Farbenindustrie Ag Improved manufacture of light-sensitive photographic preparations

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE972720C (en) * 1952-11-08 1959-09-10 Eastman Kodak Co Sensitized photographic material

Also Published As

Publication number Publication date
BE492214A (en)
FR1006813A (en) 1952-04-28
US2518698A (en) 1950-08-15

Similar Documents

Publication Publication Date Title
GB661645A (en) Improvements in sensitive photographic emulsions
GB1213056A (en) Aminoalkylthiocarboxylic acids and their use as photographic antifoggants
GB1054123A (en)
GB664230A (en) Improvements in sensitive photographic emulsions
GB1128418A (en) Improvements in and relating to photographic silver halide emulsions
US3793027A (en) Developing composition for use with photographic materials for the graphic arts
GB1297655A (en)
GB477289A (en) Improvements in and relating to photographic films
GB663019A (en) Improvements in sensitive photographic emulsions
US3576636A (en) Light-sensitive silver halide direct-positive photographic emulsion
GB658826A (en) Improvements in or relating to photographic emulsions
US4040839A (en) Direct-positive process utilizing a supersensitized silver halide emulsion
GB974723A (en) Light sensitive gelatino-silver halide photographic emulsions
GB1230642A (en)
GB663020A (en) Improvements in sensitive photographic emulsions
US2304962A (en) Fog inhibitor for photographic emulsions
GB1324475A (en) Process for crosslinking hydrophilic colloids
GB1152058A (en) Gelatin Compositions
GB1260710A (en) Developing photographic silver halide light-sensitive elements
GB734474A (en) Improvements in sensitized photographic emulsions
GB1200188A (en) Improvements in or relating to photographic light-sensitive material
GB657805A (en) Improvements in sensitive photographic materials
GB1267731A (en) Improvements in or relating to photographic materials
GB1173609A (en) Improved Light-Sensitive Materials
US4003746A (en) Organic heterocyclic and thioaryl phosphines in silver halide emulsions and developers therefor