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
  • G03C7/39212—Carbocyclic
  • G03C7/39216—Carbocyclic with OH groups
• • 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
• • 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
  • G03C8/00—Diffusion transfer processes or agents therefor; Photosensitive materials for such processes

Definitions

• This invention relates to photographic elements and processes of forming images in photographic elements.
• this invention relates to photographic elements containing a ballasted resorcinol compound.
• this invention relates to photographic elements which have improved resistance to environmental effects, background stain, etc.
• this invention relates to improved image transfer systems.
• additives used as scavengers acted as a redox agent, especially in the case of scavenging oxidized developers, and reduced the oxidized developing agent.
• antistain agents were silver halide developers which could enter in competing reactions with color developing agents. Therefore, improved additives are desirable, especially in color systems such as image transfer systems.
• ballasted resorcinol compounds can be used in photographic elements to improve the image quality and aging properties of the image record.
• the photographic elements of this invention comprise a'compound of the formula:
• the photographic elements containing the above ballasted resorcinol compounds have improved image I properties; apparently, these compounds are very effective as'scavengers for by-products or excess ingredithus, can be put in any desired layer of the photo-' graphic element since they will not compete with the developing agents or reactivate oxidized developing agents.
• ballasted resorcinol compounds can generally be incorporated in hydrophilic colloid layers with organic solvents having low boiling points, such as acetone, ethyl acetate, etc.; thus thinner coatings can be used compared to couplers requiring large amounts of high-boiling-point organic solvents to achieve uniform dispersion.
• the ballasted resorcinols are present in a photographic element which is processed with a color developing agent.
• the ballasted resorcinols are present in photographic elements in combination with color-forming couplers to scavenge oxidized color developer which does not react with the color coupler.
• the scavengers of this inven-' tion are used in combinationwith a timing means so that development in the photosensitive element is substantially complete before the scavenger is effectively associated with the development medium.
• the scavengers of this invention are used in combination with color transfer units, and preferably those transfer units wherein the dye image-receiving layer is integral with the photosensitive element itself or is .provided on a separate support ents in silver halide development reactions, especially color development reactions, When -color developers such as aromaticprimary amines are used in the development reaction, the ballasted resorcinols appear to scavenge the excess developer which may provide discoloration upon aerial oxidation or extraneous oxidato be superposed on the photosensitive element after exposure thereof.
• -elements of this type comprise a film unit which is adapted to be processecl by passing the unit between a pair of juxtaposed pressure-applying members, such as would be found in a camera designed for in-camera processing, comprising:' 0' I i a. a photosensitive element comprising a support having thereon at least one and preferably three photosensitive silver halide emulsion layers, each silver halide emulsion layer having associated therewith a dye 3 image-providing material comprising a nondiffusible coupler capable of reacting with oxidized aromatic primary amino color developing agent to produce a diffusible dye;
• a rupturable container containing an alkaline processing composition and which is adapted to be positioned during processing of the film unit so that a compressive force applied to the container by the pressureapplying members will effect a discharge of the containers contents within the film unit;
• the above film unit containing an aromatic primary amino color developing agent, preferably in the rupturable container, and a ballasted resorcinol in a polymeric binder which is capable of reacting with unused aromatic primary amino color developing agent to form a colorless or substantially colorless reaction product.
• ballasted resorcinols of this invention generally require the use of an organic solvent to achieve a uniform dispersion in a hydrophilic colloid layerof a photographic element.
• organic solvents having a boiling point of less than 100 C., such as acetone, ethyl acetate and the like, are very effective in achieving uniform dispersions of the present scavengers.
• high-boiling-point organic solvents such as coupler solvents, can be used to obtain dispersions, they are generally not employed since it is usually more practical to use low-boiling-point solvents.
• the ballasted resorcinols can generally be incorporated in photographic elements by any of the techniques employed in the art for dispersing materials of this type which have very marginal water solubility. When they are dispersed in hydrophilic colloid layers they can be dispersed by techniques known for dispersing coupler solvents or by means employing the low-boiling-point solvents to obtain uniform dispersions.
• the ballasted resorcinols can be employed in any concentration useful for the intended purpose. However, generally lower weight percentages of the present ballasted resorcinols are required to provide an effective scavenging as compared to other compounds used in the prior art for this purpose. We have found that concentrations of from 1 mg. per square foot to about 500 mg. per square foot, and preferably from about5 mg. to 100 mg. per square foot, can be used for most purposes.
• the ballasted resorcinols'can generally be located in any layer of a photographic element (including imagereceiving. sheets).
• the ballasted resorcinols can generally be incorporated in all vehicles used in coating photographic elements including, for example, proteins, cellulose derivatives, polysaccharides, synthetic polymeric substances and the like.
• the ballasted resorcinols are incorporated in hydrophilic, water-permeable colloids, or synthetic polymeric compounds such as dispersed vinyl compounds such as in latex form and particularly those which'increase the dimensional stability of the photographic materials.
• Suitable synthetic polymers include those described, for example, in US. Pat. Nos.
• nondiffusing used herein has the meaning commonly applied to the term in color photography and denotes materials which for all practical purposes do not migrate or wander through organic colloid layers, such as gelatin, comprising the sensitive elements of the invention. The same meaning is to be attached to the term immobile.
• diffusible has the converse meaning and denotes materials having the property of diffusing effectively through the colloid layers of the photographic elements, and generally refers to materials which can migrate to any layer of the element during aqueous treatment.
• Mobile has the same meaning.
• the scavengers of this invention can be used in any photographic element where it is desired to immobilize or scavenge an unwanted reaction product or contaminant. In one embodiment, they are used effectively in black-and-white or color photographic products to scavenge unwanted aldehydes. in another embodiment, the ballasted resorcinols are especially useful in color photographic elements which employ a color silver halide developer during processing.
• color developer is understood to refer to that class of compounds known in the art as color silver halide developers, and generally refers to silver halide developers which in their oxidized form will couple with a color-forming coupler. Generally, these developers are aryl compounds having at least one NH group thereon.
• the ballasted resorcinols are used in image transfer systems including those transfer systems wherein the image-receiving layer remains integral with the photosensitive emulsion, as well as those where the imagereceiving layer is separated from the photosensitive layers.
• the novel dye image-receiving element comprises a support having thereon the following layers:
• a scavenger layer comprising a ballasted resorcinol in a polymeric binder and b. a dye image-receiving layer.
• a timing layer can also be em- I ployed in the invention between the scavenging layer and the dye image-receiving layer which functions to delay the rate of diffusion of aromatic primary amino color developing agent into the scavenging layer.
• the timing layer therefore, ensures the efficient use of the aromatic primary amino color developing agent in the photosensitive element prior to scavenging action by the ballasted resorcinol.
• a lightreflective layer comprising a white pigment in a binder, described hereinafter, can also be employed in the dye image-receiving element, if desired.
• the light-reflective layer can be located underneath the dye imagereceiving layer or can be combined with the timing layer if one is employed.
• the image dyes formed in the respective blue-, greenand redsensitive silver halide emulsion layers diffuse out of the photosensitive element through the viscous developer composition and into the dye image-receiving layer, e.g., into the dye image-receiving element described above, where the dyes are mordanted to form the transferred image.
• the timing layer if one is present, prevents the diffusion of color developer into the scavenger layer for the time necessary to ensure the efficient use of the aromatic primary amino color developing agent in the photosensitive element.
• the scavenger layer can be located in an integral film unit wherein the dye image-receiving layer is located'integral with the photosensitive element between the support and the lowermost photosensitive silver halide emulsion layer.
• integral receiver-negative photosensitive elements are described in copending U.S. application Ser. No. 115,459 of Barr, Bush and Thomas filed Feb. 16, 1971, now abandoned.
• the support for the photosensitive element is transparent and is coated with the dye image-receiving layer, a substantially opaque, light-reflective layer, e.g., TiO a scavenger layer comprising a ballasted resorcinol dispersed in a suitable binder, and the various layers forming the color-forming units.
• a rupturable container containing an alkaline processing composition and an opaque process sheet are brought into superposed position. Pressure-applying members in a camera rupture the container and spread processing composition over the'photosensitive element as the film unit is withdrawn from the camera.
• the processing composition develops the exposed silver halide layers and dye images are formed as a function of development which diffuse to the image-receiving layer to provide a positive, rightreading image which is viewed through the transparent support on the opaque reflecting layer background. It is believed that positioning of the scavenger layer between the color-forming photosensitive units and the image-receiving layer in the integral receiver-negative film system prevents the diffusion of unused color developer into the image-receiving layer. If desired, an auxiliary scavengerlayer comprising the scavenging materials described herein can be located on the opaque process sheet. For further detailsconcerning this particular integral film unit, its preparation and use, reference is made to the above-mentioned U.S. ap-
• the support for the color diffusion transfer system is transparent and is coated with the imagereceiving layer, a substantially opaque, light-reflective layer, e.g., ,TiO a scavenger layer comprising a ballasted resorcinol dispersed in a suitable binder, and then the various layers forming the color-forming units and a top transparent sheet.
• a rupturable container containing an alkaline processing composition and an opacifier is positioned adjacent to the top layer and sheet.
• the film unit is placed in a camera, exposed through the top transparent sheet and then passed between a pair of pressure-applying members in the camera as it is being removed therefrom.
• the pressureapplying members rupture the container and spread processing composition and opacifier over the negative portion of the film 'unit to render it lightfinsensitive.
• the processing composition develops the exposed silver halide layers and dye images are formed as a result of development which diffuse to the image-receiving layer to provide a positive, right-reading image which is viewed through the transparent support on the opaque reflecting layer background. Any unused aromatic primary amino color developing agent which may difiuse in the direction of the image-receiving layer is immobilized by the ballasted resorcinol present in the scavenger layer.
• ballasted resorcinols are used in the photographic film units where there is associated with each silver halide emulsion layer in the photosensitive element a dye imageproviding material comprising a nondiffusible coupler which produces a diffusable dye on reaction with oxidized aromatic primary amino color developing agent in an alkaline processing composition.
• timing or spacer layers referred to above can be employed in photographic elements of our invention. Generally, they are employed between the scavenger layer and a dye image-receiving layer which times or controls the scavenging reaction as a function of the rate at which alkali diffuses through the inert spacer layer.
• timing layers include gelatin, polyvinyl alcohol or any of those disclosed in U.S. Pat. No. 3,455,686.
• the timing layer is also effective in evening'out the various reaction rates over a wide range of temperatures, e.g., premature pH reduction is prevented when imbibition is effected at temperatures above room temperature, for example, at 95 to 100 F.
• the timing layer is usually about 0.1 to about 0.7 mil in thickness.
• the timing layer comprises a hydrolyzable polymer or a mixture of such polymers which are slowly hydrolyzed by the processing composition.
• hydrolyzable polymers include polyvinyl acetate, polyamides, cellulose esters, etc.
• the light-sensitive element A is exposed through the support of element A to a graduateddensity test object and presoaked for 5 seconds at a temperature of 70 F. in the processing solution.
• the receiver B is presoaked for seconds in the same solution and subsequently brought into contact with the light-sensitive element. Both are passed between rubber rollers and left in contact for 3 minutes.
• the receiver is analyzed for silver in the areas corresponding to minimum exposure of the negative. Cyan dye density developed in the receiver and the level of silver found in the receiver are both indications of the efficiency of consumption of oxidized developer by the nucleated layer (layer 3) of the negative.
• the compounds are dissolved in 2,4-di-namylphenol, as disclosed in US. Pat. No. 2,835,579, and then incorporated in the coating composition prior to coating.
• a photographic element comprising a supporlg at' .least one layer thereon being an image-receiving layer or containing a silver halide emulsion, and at least one layer thereon containing an immobile, ballasted resorcinol compound.
• said photographic element comprises at least one layer containing a silver halide emulsion.
• ballasted resorcinol compound is represented by the formula:
• Ball represents a ballast group containing at least eight carbon atoms.
• ballasted resorcinol is 5-npentadecylresorcinol.
• ballasted resorcinol is S-n-pentadecylenecarbon-amidoresorcinol.
• a photographic element according to claim 1 which comprises at least one layer containing a silver halide emulsion having associated therewith a photographic color coupler.
• a photographic film unit which is adapted to be processed by passing said unit between a pair of juxtaposed pressure-applying members comprising:
• a photosensitive element comprising a support having thereon at least one photosensitive silver halide emulsion layer, each said silver halide emulsion layer having associated therewith a nondiffusible coupler capable of reacting with oxidized aromatic primary amino color developing agent to produce a diffusible dye;
• said film unit containing an aromatic amino color developing agent; the improvement comprising employ- -ing a developing agent scavenger layer comprising a ballasted resorcinol in a polymeric binder.
• the film unit of claim 10 which contains a timing layer between said scavenger layer and said dye imagereceiving layer.
• a transfer image comprising a. imagewise-exposing a photosensitive element comprising a support having thereon at least one photosensitive silver halide emulsion layer, each said silver halide emulsion layer having associated therewith a nondif-fusible coupler capable of reacting with oxidized aromatic primary amino color developing agent to produce a diffusible dye;

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• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Spectroscopy & Molecular Physics (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Engineering & Computer Science (AREA)
• Materials Engineering (AREA)
• Silver Salt Photography Or Processing Solution Therefor (AREA)
• Color Printing (AREA)

Applications Claiming Priority (1)

Publications (1)

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Cited By (11)

Citations (3)

• 0
  • BE BE788926D patent/BE788926A/xx unknown
• 1971
  • 1971-09-16 US US00181262A patent/US3770431A/en not_active Expired - Lifetime
• 1972
  • 1972-08-03 CA CA148,649A patent/CA983765A/en not_active Expired
  • 1972-09-14 GB GB4271772A patent/GB1404470A/en not_active Expired
  • 1972-09-15 FR FR7232721A patent/FR2153013B1/fr not_active Expired

Patent Citations (3)

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