[go: up one dir, main page]

GB1403408A - Colour reversal process and developer - Google Patents

Colour reversal process and developer

Info

Publication number
GB1403408A
GB1403408A GB4697972A GB4697972A GB1403408A GB 1403408 A GB1403408 A GB 1403408A GB 4697972 A GB4697972 A GB 4697972A GB 4697972 A GB4697972 A GB 4697972A GB 1403408 A GB1403408 A GB 1403408A
Authority
GB
United Kingdom
Prior art keywords
colour
developer
mole
inhibitor
concentration
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
GB4697972A
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.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
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 Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Publication of GB1403408A publication Critical patent/GB1403408A/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
    • G03C7/407—Development processes or agents therefor
    • G03C7/413—Developers
    • 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
    • G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
    • G03C5/50—Reversal development; Contact processes

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

1403408 Colour reversal development MINNESOTA MINING & MFG. CO. 11 Oct 1972 [12 Oct 1971 14 Aug 1972] 46979/72 Heading G2C Colour reversal development of an exposed gelatine/silver halide emulsion layer comprises impregnating with a monobath comprising colour developer, black and white developer and an agent which inhibits colour formation, chemically or light fogging the unexposed silver halide, deactivating or removing the inhibitor, and allowing colour coupling (followed by bleaching and fixing). The colour developer (which maybe a primary aromatic amine) has a polarographic half-wave potential at pH 11 of -159 to -305 mv. Its concentration is at least 0.02 mole/l. The proportion of colour developer to total developer may be 40- 95 mole per cent. The black and white developer (which may be of the hydroquinone, p-aminophenol or pyrazolidone series) has a polarographic half-wave potential at pH 10 of -10 to -187 mv. Its concentration may be 0.0045 mole/l or less. The mole ratio of inhibitor to colour developer is at least 0.97. The inhibitor (which may be a sulphite, ascorbic acid, citrazinic acid, 4-hydroxy-3- butanone or hydroquinone monocarboxylic acid hydrazide may have a concentration 0.10-0.48 mole/l. It may act by forming a stable reaction product with oxidized colour developer (at a pH of 8.5-14) or by forming a temporary reaction product with the colour developer itself (at a lowerpH at which no oxidation occurs). Its effect may be terminated by washing with water or an aqueous solution of pH 7-13. It may be effected at the same time as light fogging. The colour coupler may be in the monobath or initially in the emulsion layer.
GB4697972A 1971-10-12 1972-10-11 Colour reversal process and developer Expired GB1403408A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US18861671A 1971-10-12 1971-10-12
US280263A US3883354A (en) 1971-10-12 1972-08-14 Color reversal process and developer

Publications (1)

Publication Number Publication Date
GB1403408A true GB1403408A (en) 1975-08-28

Family

ID=26884305

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4697972A Expired GB1403408A (en) 1971-10-12 1972-10-11 Colour reversal process and developer

Country Status (15)

Country Link
US (1) US3883354A (en)
JP (1) JPS5143379B2 (en)
AR (1) AR194851A1 (en)
AU (1) AU460085B2 (en)
BE (1) BE789928A (en)
CA (1) CA979705A (en)
CH (1) CH581337A5 (en)
DD (1) DD99676A5 (en)
DE (1) DE2264986A1 (en)
FR (1) FR2156227B1 (en)
GB (1) GB1403408A (en)
IL (1) IL40549A (en)
IT (1) IT972366B (en)
NL (1) NL7213318A (en)
SE (1) SE388489B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3941599A (en) * 1972-11-15 1976-03-02 Minnesota Mining And Manufacturing Company Method for obtaining a color contrast photographic image, photographic element and development composition suitable for the realization of said method
US4194911A (en) * 1973-01-22 1980-03-25 Minnesota Mining And Manufacturing Company Inhibitor removing bath for direct positive color photographic development
US4055422A (en) * 1975-07-28 1977-10-25 Minnesota Mining And Manufacturing Company Additive for inhibitor removing bath
DE2700290A1 (en) * 1977-01-05 1978-07-06 Agfa Gevaert Ag PHOTOGRAPHIC REVERSAL WITHOUT A SECOND EXPOSURE
US4161406A (en) * 1977-12-07 1979-07-17 Philip A. Hunt Chemical Corp. Solution and method for processing high speed video news film
DE58908850D1 (en) * 1988-10-20 1995-02-16 Agfa Gevaert Ag Reverse photographic process.
EP0370348A1 (en) * 1988-11-24 1990-05-30 Agfa-Gevaert AG Photographic-reversal method
CN102759849B (en) * 2012-06-30 2017-05-10 乐凯胶片股份有限公司 Color photographic developing solution

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3165407A (en) * 1962-06-08 1965-01-12 Eastman Kodak Co Process for improving color developability of reversal photograph films
BE637358A (en) * 1962-09-15
NL299723A (en) * 1962-10-25
US3335004A (en) * 1963-12-09 1967-08-08 Eastman Kodak Co Method for stabilization processing of color emulsions
DE1935310C3 (en) * 1968-07-15 1974-02-07 Fuji Photo Film Co. Ltd., Ashigara, Kanagawa (Japan) Process for developing a color photographic recording material
US3615509A (en) * 1970-02-11 1971-10-26 Du Pont Photographic fixer-developer containing compounds with p-aminophenol and dyeforming nuclei
US3658525A (en) * 1970-12-03 1972-04-25 Eastman Kodak Co Reversal color photographic processes

Also Published As

Publication number Publication date
DE2249857A1 (en) 1973-04-26
DD99676A5 (en) 1973-08-12
BE789928A (en) 1973-02-01
CH581337A5 (en) 1976-10-29
NL7213318A (en) 1973-04-16
US3883354A (en) 1975-05-13
IT972366B (en) 1974-05-20
AR194851A1 (en) 1973-08-24
AU460085B2 (en) 1975-04-17
JPS5143379B2 (en) 1976-11-20
AU4763972A (en) 1974-04-26
FR2156227B1 (en) 1978-03-03
DE2249857B2 (en) 1975-10-09
DE2264986A1 (en) 1975-11-06
IL40549A (en) 1975-12-31
IL40549A0 (en) 1972-12-29
CA979705A (en) 1975-12-16
JPS4847340A (en) 1973-07-05
FR2156227A1 (en) 1973-05-25
SE388489B (en) 1976-10-04

Similar Documents

Publication Publication Date Title
GB1403408A (en) Colour reversal process and developer
GB1311884A (en) Light-sensitive silver halide photographic materials incorporating
GB1376519A (en) Colour development processing of silver halide photographic material
GB1421126A (en) Processing silver halide photographic materials
SE7509146L (en) PHOTOGRAPHIC MULTI-LAYER FARM MATERIAL
GB1209050A (en) Photographic silver halide processing liquids
JPH06503893A (en) photo bleaching composition
US3811888A (en) Composition for processing silver halide photographic light-sensitive elements
GB1026496A (en) Method of photographic processing
GB988967A (en) Improved coloured photographic images
JPS57132146A (en) Method for processing color photographic material
KR860004332A (en) Processing method of silver halogenated color photosensitive material
US3619188A (en) Bleach-fix processing
GB1348360A (en) Photographic colour developing process
GB1297905A (en)
GB1523616A (en) Photographic silver halide colour development
GB1455831A (en) Development composition for use in colour contrast photography
GB1338714A (en) Photographic colour silver halide developing process
GB904462A (en) Improved photographic processes
GB1494010A (en) Method of forming photographic colour images in photosensitive silver halide materials
GB1249277A (en) Stabilisation of developed photographic silver images
GB1458020A (en) Photographic development and bleach fix process
GB751186A (en) Improvements in processes of colour photography and compositions therefor
GB1404439A (en) Photographic silver halide material for colour reversal development
GB1266533A (en)

Legal Events

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