EP0617324A1 - Méthode de traitement de matériaux photographiques à base d'halogénure d'argent - Google Patents

Méthode de traitement de matériaux photographiques à base d'halogénure d'argent Download PDF

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Publication number
EP0617324A1
EP0617324A1 EP94200769A EP94200769A EP0617324A1 EP 0617324 A1 EP0617324 A1 EP 0617324A1 EP 94200769 A EP94200769 A EP 94200769A EP 94200769 A EP94200769 A EP 94200769A EP 0617324 A1 EP0617324 A1 EP 0617324A1
Authority
EP
European Patent Office
Prior art keywords
colour
silver halide
pyrazolidinone
dye
granularity
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.)
Granted
Application number
EP94200769A
Other languages
German (de)
English (en)
Other versions
EP0617324B1 (fr
Inventor
Peter Jeffery C/O Kodak Limited Twist
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
Eastman Kodak 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 Kodak Ltd, Eastman Kodak Co filed Critical Kodak Ltd
Publication of EP0617324A1 publication Critical patent/EP0617324A1/fr
Application granted granted Critical
Publication of EP0617324B1 publication Critical patent/EP0617324B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • G03C7/392—Additives
    • G03C7/39208—Organic compounds
    • G03C7/3924—Heterocyclic
    • G03C7/39244—Heterocyclic the nucleus containing only nitrogen as hetero atoms
    • G03C7/39252—Heterocyclic the nucleus containing only nitrogen as hetero atoms two nitrogen atoms
    • 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

Definitions

  • This invention relates to a method of processing photographic silver halide materials and in particular colour negative materials.
  • One such property is granularity or the perceived "graininess" of the dye image.
  • US patent 4 859 578 describes a photographic colour negative recording material which contains (1) an image dye-forming coupler, (2) a DIR compound, (3) a compound which releases a water-soluble mercaptan on silver halide development said to be invovled in selective development acceleration and (4) a compound which releases an electron transfer agent (ETA) on silver halide development.
  • ETA electron transfer agent
  • such materials very often contain developer inhibitor-releasing compounds (usually couplers) to improve properties such as sharpness in the image areas in the vicinity of its release).
  • the material is said to have improved granularity without sacrificing other desirable properties.
  • the present invention does not use incorporated compounds (3) or (4) which, of course, only act in the vicinity of their release.
  • US patent 4 526 863 describes a photographic colour negative recording material having a relatively light-insensitive silver halide, zinc oxide or titanium oxide layer positioned between two photosensitive silver halide layers which contains a compound which releases a fogging agent in the vicinity of silver halide development.
  • a method of reducing the granularity of an imagewise exposed photographic silver halide colour negative material comprising a support bearing at least one photosensitive silver halide emulsion layer having associated therewith a dye image-forming coupler
  • the invention provides a processed colour negative material having improved granularity without loss or gain of density for a given exposure. It is believed that mechanism by which the invention achieves its results is through an increase in silver development and the number of silver centres but with a lowering of dye yield per unit silver. This is especially true of the D min and fog regions.
  • the pyrazolidinones employed herein are those which, at the correct level, can increase silver development, reduce dye yield such that the dye density is about the same as in the control case and reduce the gamma-normalised granularity.
  • the pyrazolidinones may be present in the colour negative material in an amount of from 0.01 to 5.0 g/m2, preferably 0.05 to 1.0 g/m2 and especially 0.2 to 0.8 g/m2. They may be located in an emulsion layer or another layer of the material. Preferably they are located in or adjacent the silver halide emulsion layer nearest the support.
  • the incorporated material is a pyrazolidinone precursor which remains inactive until the material is treated with an alkaline processing solution.
  • a precursor may beta compound of one of the formulae: wherein R1 and R2 are alkyl or aryl groups that may be substituted. It is preferred that R1 and R2 are ballast groups of such a size and configuration to render the compound non wandering in photographic layers.
  • the pyrazolidinone may also be present in the colour developer in addition to the colour negative material.
  • the amount of the pyrazolidone of formula (I) or (II) employed in the colour developer may range from 0.05 to 5.0 g/l, preferably from 0.1 to 1.0 g/l and particularly from 0.2 to 0.5 g/l As will be illustrated below in the Examples, the optimum amount can be determined by experiment.
  • the electron transfer agent in Example 5 is one which causes a small increase in silver development but with a much reduced dye yield resulting in an overall reduction in dye density throughout the entire sensitometric curve. This causes a reduction in raw granularity but is accompanied by a loss of sensitometric response typical of other compounds which act as "toe-cutters".
  • the colour development step is preferably followed by the conventional bleach, fix (or bleach-fix) and wash and/or stabilise steps.
  • a typical process is the C41 process described in British Journal of Photography (1988) pages 196-98. The exact composition, the temperature and the time of processing can be established by experiment.
  • the photographic material to be processed may be any of those described in Research Disclosure Item 308119, December 1989 published by Kenneth Mason Publications, Emsworth, Hants, United Kingdom.
  • DTPA is a 41% solution of the penta sodium salt of diethylenetriamine pentaacetic acid.
  • pyrazolidones such as 1-phenylpyrazolidin-3-one and 4,4-hydroxymethyl-methyl pyrazolidin-3-one (MOP) behave similarly to those in Examples 2 and 3.
  • Example 1 The procedure of Example 1 was repeated except that the pyrazolidone was replaced with 4'-ethoxy 1-phenylpyrazolidin-3-one. As can be seen from Figure 6, this lowers raw granularity and gamma-normalised granularity but to a lesser extent than 4'-methoxy-1-phenylpyrazolidin-3-one.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
EP19940200769 1993-03-26 1994-03-24 Utilisation de composés pyrazolidinone pour réduire la granularité de matériaux photographiques à l'halogénure d'argent Expired - Lifetime EP0617324B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9306355 1993-03-26
GB939306355A GB9306355D0 (en) 1993-03-26 1993-03-26 Method of processing photographic silver halide materials

Publications (2)

Publication Number Publication Date
EP0617324A1 true EP0617324A1 (fr) 1994-09-28
EP0617324B1 EP0617324B1 (fr) 1997-05-14

Family

ID=10732829

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19940200769 Expired - Lifetime EP0617324B1 (fr) 1993-03-26 1994-03-24 Utilisation de composés pyrazolidinone pour réduire la granularité de matériaux photographiques à l'halogénure d'argent

Country Status (3)

Country Link
EP (1) EP0617324B1 (fr)
JP (1) JPH06308690A (fr)
GB (1) GB9306355D0 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4859578A (en) * 1988-06-21 1989-08-22 Eastman Kodak Company Photographic recording material providing improved granularity properties
EP0347849A2 (fr) * 1988-06-21 1989-12-27 EASTMAN KODAK COMPANY (a New Jersey corporation) Matériau d'enregistrement photographique pour développement accéléré
WO1992010789A1 (fr) * 1990-12-13 1992-06-25 Kodak Limited Procede de developpement photographique renverse, materiaux a base d'halogenure d'argent, et solutions associees

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4859578A (en) * 1988-06-21 1989-08-22 Eastman Kodak Company Photographic recording material providing improved granularity properties
EP0347848A2 (fr) * 1988-06-21 1989-12-27 EASTMAN KODAK COMPANY (a New Jersey corporation) Matériau de reproduction photographique pourvu de propriétés de granularité ameliorées
EP0347849A2 (fr) * 1988-06-21 1989-12-27 EASTMAN KODAK COMPANY (a New Jersey corporation) Matériau d'enregistrement photographique pour développement accéléré
WO1992010789A1 (fr) * 1990-12-13 1992-06-25 Kodak Limited Procede de developpement photographique renverse, materiaux a base d'halogenure d'argent, et solutions associees

Also Published As

Publication number Publication date
JPH06308690A (ja) 1994-11-04
EP0617324B1 (fr) 1997-05-14
GB9306355D0 (en) 1993-05-19

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