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GB524040A - Improvements in colour forming developers and processes of colour development - Google Patents

Improvements in colour forming developers and processes of colour development

Info

Publication number
GB524040A
GB524040A GB2002/39A GB200239A GB524040A GB 524040 A GB524040 A GB 524040A GB 2002/39 A GB2002/39 A GB 2002/39A GB 200239 A GB200239 A GB 200239A GB 524040 A GB524040 A GB 524040A
Authority
GB
United Kingdom
Prior art keywords
nitro
colour
naphthol
phenylenediamine
dichloro
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
GB2002/39A
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
Priority to GB2002/39A priority Critical patent/GB524040A/en
Priority to US305001A priority patent/US2266452A/en
Priority to FR863001D priority patent/FR863001A/en
Publication of GB524040A publication Critical patent/GB524040A/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
    • G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
    • G03C7/30—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
    • G03C7/32—Colour coupling substances
    • G03C7/34—Couplers containing phenols
    • G03C7/344—Naphtholic couplers

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Heat Sensitive Colour Forming Recording (AREA)
  • Hydrogenated Pyridines (AREA)
  • Pyridine Compounds (AREA)

Abstract

524,040. Colour development. KODAK, Ltd. (Eastman Kodak Co.). Jan. 20, 1939, No. 2002. [Class 98 (ii)] A colour forming developer comprises an aromatic amino developing agent and a colour coupler of the formula shown in Fig. 1, where X represents a hydrogen atom or a nitro group and one or more nitro groups are present in the molecule. Other substituents may be present, either in the ring containing the hydroxyl group or in the ring containing the nitro group or groups. Examples specified are 5-nitro-1- naphthol, 2-4-dichloro-5-nitro-1-naphthol, 2:3:4- trichloro-5-nitro-1-naphthol, 5-nitro-1-naphthol - 4-sulphonic acid, 2:4-dibromo-5-nitro-1-naphthol, 2:4-dichloro-5-acetamino-8-nitro-1-naphthol, and 2:4-dichloro-5-benzenesulphonamino- 8-nitro-1-naphthol. The colour coupler may be incorporated in the emulsion and may then be substituted by a high molecular or long chain substituent. The colour coupler may be absorbed on the silver halide grains. A formula for a colour forming developer is given. The aromatic amino developing agents may be mono-, di-, and tri-aminoaryl compounds in particular aminophenols and aminocresols and their halogen substituted derivatives, aminonaphthols, p-phenylenediamine and its derivatives substituted in the amino group or in the ring or in both, such as mono-methyl-pphenylenediamine, dimethyl-p-phenylenediamine, diethyl-p-phenylenediamine, toluylenediamines, alkyl-toluylenediamines and aminodiphenylamines, and o-aminodiethylaniline. The dyes formed have an increased absorption in the near infra-red and an improved transmission in the green, and the ability of the colour developing solutions to penetrate photographic emulsions is improved. The emulsions may have a gelatin or other binder, and may be coated on plates, films, or paper. Differently colour sensitized emulsion layers may be superimposed on one or both sides of the support, or emulsions of the mixed grain type may be used. Specifications 427,472, 427,516, 427,518, 427,520, 440,032, 440,089 and 447,092 are referred to.
GB2002/39A 1939-01-20 1939-01-20 Improvements in colour forming developers and processes of colour development Expired GB524040A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB2002/39A GB524040A (en) 1939-01-20 1939-01-20 Improvements in colour forming developers and processes of colour development
US305001A US2266452A (en) 1939-01-20 1939-11-17 Nitronaphthol coupler for color photography
FR863001D FR863001A (en) 1939-01-20 1940-01-20 Improvements to color developers and color development processes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2002/39A GB524040A (en) 1939-01-20 1939-01-20 Improvements in colour forming developers and processes of colour development

Publications (1)

Publication Number Publication Date
GB524040A true GB524040A (en) 1940-07-29

Family

ID=9731867

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2002/39A Expired GB524040A (en) 1939-01-20 1939-01-20 Improvements in colour forming developers and processes of colour development

Country Status (3)

Country Link
US (1) US2266452A (en)
FR (1) FR863001A (en)
GB (1) GB524040A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2506622A (en) * 1944-03-11 1950-05-09 Technicolor Motion Picture Elimination of preservative sulfite from photographic developers prior to use in color development

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4208210A (en) * 1974-12-19 1980-06-17 Fuji Photo Film Co., Ltd. Process for forming an optical soundtrack
US4178183A (en) * 1978-07-27 1979-12-11 Eastman Kodak Company Thiazolyl coupler compositions and photographic elements suited to forming integral sound tracks
US4250251A (en) * 1978-07-27 1981-02-10 Eastman Kodak Company Phenylsulfamoyl couplers, coupler compositions and photographic elements suited to forming integral sound tracks
US4233389A (en) * 1979-07-23 1980-11-11 Eastman Kodak Company Fluorinated 1-hydroxy-2-naphthamide coupler compositions and photographic elements suited to forming integral sound tracks
DE3467822D1 (en) * 1984-09-28 1988-01-07 Agfa Gevaert Nv Photographic colour elements
US6664034B2 (en) * 1999-12-31 2003-12-16 Eastman Kodak Company Digital film processing method
WO2006035996A1 (en) * 2004-09-29 2006-04-06 Fujifilm Corporation Silver halide color photosensitive material and method of processing the same
EP2049767A1 (en) 2006-08-10 2009-04-22 Shell Internationale Research Maatschappij B.V. Methods for producing oil and/or gas

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2506622A (en) * 1944-03-11 1950-05-09 Technicolor Motion Picture Elimination of preservative sulfite from photographic developers prior to use in color development

Also Published As

Publication number Publication date
FR863001A (en) 1941-03-21
US2266452A (en) 1941-12-16

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