GB794637A - Improvements in photographic emulsions - Google Patents

Improvements in photographic emulsions

Info

Publication number
GB794637A
GB794637A GB18233/56A GB1823356A GB794637A GB 794637 A GB794637 A GB 794637A GB 18233/56 A GB18233/56 A GB 18233/56A GB 1823356 A GB1823356 A GB 1823356A GB 794637 A GB794637 A GB 794637A
Authority
GB
United Kingdom
Prior art keywords
silver
emulsion
thioglycolylamidobenzthiazole
silver salt
salt
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
GB18233/56A
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 GB794637A publication Critical patent/GB794637A/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
    • G03C1/35—Antiplumming agents, i.e. antibronzing agents; Toners
    • G03C1/355—Organic derivatives of bivalent sulfur, selenium or tellurium
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
    • Y10S430/13—Antibronze agent or process

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)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)

Abstract

794,637. Fhotographic light-sensitive materials. KODAK, Ltd. June 13, 1956 [June 21, 1955], No. 18233/56. Class 98(2) Degradation of a silver image in an exposed silver halide emulsion layer during its formation in the development step or during subsequent processing is prevented by incorporating in the emulsion layer or a contiguous layer the silver salt of 2 - thioglycolylamidobenzthiazole or of 2 - acetylthioglycolylamidobenzthiazole e.g. in an amount of from 0.5 to 3 grams per mol of.silver halide in the emulsion. In Example 1, data for the maximum density after hot drying for an exposed silver chloride emulsion (whose preparation is described and which contains saponin and formaldehyde). coated on paper, with and without the addition of two different amounts of the silver salt of 2 - thioglycolylamidobenzthiazole, are given. Example 2 is similar, but the emulsion is a silver chloride emulsion containing 2 per cent of silver bromide and the silver salt of 2 - thioglycolylamidobenzthiazole is incorporated in a gelatin coating applied over the emulsion layer.' Example 3 is similar to Example 2, using a silver chloride emulsion and a gelatin coating containing the silver salt of acetylthioglycolylamidobenzthiazole. In Example 4, relative speeds and maximum density values are given for two portions of a silver bromiiodide emulsion, of which one portion is overcoated with the silver salt and the other with the silver salt of thioglycolylamidobenzthiazole. The compounds may also be incorporated in coatings applied under the emulsion. Specifications 699,858 and 699,892 [Group IV(b)] are referred to.
GB18233/56A 1955-06-21 1956-06-13 Improvements in photographic emulsions Expired GB794637A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US517092A US2852380A (en) 1955-06-21 1955-06-21 Photographic emulsions and solutions containing silver salts of thioglycolic derivatives

Publications (1)

Publication Number Publication Date
GB794637A true GB794637A (en) 1958-05-07

Family

ID=24058321

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18233/56A Expired GB794637A (en) 1955-06-21 1956-06-13 Improvements in photographic emulsions

Country Status (4)

Country Link
US (1) US2852380A (en)
BE (1) BE548727A (en)
FR (1) FR1151738A (en)
GB (1) GB794637A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3203800A (en) * 1962-01-05 1965-08-31 Gevaert Photo Prod Nv Photographic material comprising a silver halide emulsion containing an anti-bronzing agent

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR768015A (en) * 1934-01-06 1934-07-30 Dressler & Walther Process for preparing gelatins for photochemical operations
GB484595A (en) * 1936-11-07 1938-05-09 John David Kendall Improvements in or relating to the stabilisation of photographic sensitive materials
US2214446A (en) * 1938-05-10 1940-09-10 Gen Aniline & Film Corp Photographic development of silver halide layers
BE463544A (en) * 1944-02-03
BE494175A (en) * 1949-03-02
BE510333A (en) * 1951-03-30

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3203800A (en) * 1962-01-05 1965-08-31 Gevaert Photo Prod Nv Photographic material comprising a silver halide emulsion containing an anti-bronzing agent

Also Published As

Publication number Publication date
US2852380A (en) 1958-09-16
FR1151738A (en) 1958-02-05
BE548727A (en)

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