US3246984A - Photographic processes and products - Google Patents

Photographic processes and products Download PDF

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Publication number
US3246984A
US3246984A US94522A US9452261A US3246984A US 3246984 A US3246984 A US 3246984A US 94522 A US94522 A US 94522A US 9452261 A US9452261 A US 9452261A US 3246984 A US3246984 A US 3246984A
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Prior art keywords
dye
light
sensitive
image
layer
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US94522A
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English (en)
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Paul J Nagy
Howard G Rogers
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Polaroid Corp
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Polaroid Corp
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Priority to BE614794D priority Critical patent/BE614794A/xx
Application filed by Polaroid Corp filed Critical Polaroid Corp
Priority to US94522A priority patent/US3246984A/en
Priority to FR890023A priority patent/FR1320989A/fr
Priority to GB8803/62A priority patent/GB1003925A/en
Priority to DEJ21411A priority patent/DE1207215B/de
Application granted granted Critical
Publication of US3246984A publication Critical patent/US3246984A/en
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    • 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
    • G03C5/18—Diazo-type processes, e.g. thermal development, or agents therefor
    • 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
    • G03C8/02—Photosensitive materials characterised by the image-forming section
    • G03C8/08—Photosensitive materials characterised by the image-forming section the substances transferred by diffusion consisting of organic compounds

Definitions

  • Another object is to provide novel products useful for obtaining color images by diffusion transfer processes.
  • Still another object is to provide novel products and processes for obtaining positive and/or negative color copies of transparencies.
  • the invention accordingly comprises the processes involving the several steps and the relation and order of one or more of such steps with respect to each of the others, and the products and compositions possessing the features, properties and the relation of elements which are exemplified in the following detailed disclosure, and the scope of the application of which will be indicated in the claims.
  • FIGURE 1 is a longitudinal, diagrammatic, fragmentary, sectional view of a novel photographic product for carrying out the novel process of this invention, the thickness of the various layers or strata being greatly exaggerated;
  • FIG. 2 is a longitudinal, diagrammatic, fragmentary, sectional view of another embodiment of this invention.
  • FIG. 3 is a longitudinal, diagrammatic, fragmentary, sectional view of still another embodiment of this invention.
  • FIG. 4 is a longitudinal, diagrammatic, fragmentary, sectional view of still a further embodiment of this invention.
  • a layer of gelatin containing coloring matter such as, for example, a dye
  • a suitable support is placed on a suitable support and then rendered sensitive to light by the addition thereto of materials such as potassium or ammonium bichromate.
  • the gelatin layer may be sensitized by incorporating the latter agents therein, or by applying the sensitizer as a second coating on top of the layer of gelatin.
  • the exposed areas of the gelatin layer are rendered insoluble, whereas the unexposed areas remain soluble and may subsequently be washed away with water to obtain the color image.
  • Diazotype processes for preparing color images are also well known in the art.
  • the d-iazotype process involves treating a suitable carrier or base with a sensitizing composition containing a diazo compound as the lightsensitive substance. This treated carrier or base is exposed to actinic light through a pattern, thereby decomposing the diazo compound in areas of exposure. A positive reproduction of the original is obtained by coupling the undecomposed diazo compound with an azo dye coupling component.
  • the azo dye coupling component used for development of the image may be contained in an alkaline developing solution, as in the case of the so-called wet development or one-component process; or the sensitizing composition with which the base material is treated may contain both the diazo compound and the azo coupling component, as in the dry development, or two-component process.
  • the image is formed after exposure of the sensitized material by exposure to the action of alkaline vapors such as ammonia vapors.
  • the formation of the color image is predicated upon decomposition of the diazo compound in areas of exposure, thereby precluding coupling with an azo coupler in the exposed areas, while coupling in the presence of an alkaline environment occurs in the unexposed areas to form an azo dye image.
  • the present invention is also directed to the formation of color images by the utilization of materials which are ordinarily permeable but are capable of becoming impermeable and/ or insoluble upon exposure to actinic light.
  • light-sensitive diazo compounds may be employed as the light-sensitive element in processes such as those described and claimed in the afore-mentioned copending application of Howard G. Rogers, Serial No. 94,521.
  • a light-sensitive diazo compound decomposes in areas exposed to actinic light.
  • diazo compounds may act as a barrier, thus preventing the transfer of dye and/ or dye solvent in areas of exposure.
  • the distributive diffusion of a dye or dyes, or the color-forming components thereof may be determined by exposure and, consequently, differential hardening of exposed areas, thereby permitting selective diffusion of color-forming constituents only through unexposed or partially exposed areas of the lightsensi-tive material.
  • the expression permeable denotes the light-sensitive materials permeability to a photographic solution in the absence of exposure. Exposure results in a reduction in this permeability in the areas of exposure as a function of the point-to-point degree of exposure, and the exposed light-sensitive layer may be said to exhibit differential permeability or differential impermeability.
  • light-sensitive diazo compounds As illustrative of such light-sensitive diazo compounds, mention may be made of the diazo resins disclosed in US. Patent No. 2,714,066. Particularly satisfactory results have been obtained with Fairmount Diazo Resin, No. 4, the trade name of a methylene-linked polymer of p-diazodiphenylamine, manufactured by the Fairmount Chemical Company, Inc. If desired, light-sensitive diazo compounds which are also dyes may be employed. In this manner, a single compound may be used both as the light-sensitive substance and as the image-forrning constituent, or, alternatively, it may be used in combination with a suitable dye in conventional manner. As illustrative of light-sensitive diazo compounds which are also dyes, mention may be made of the diazonium salts obtained from Direct Blue 1.
  • FIGURE 1 illustrates one embodiment of the invention.
  • a dye or number of dyes are contained in a layer adjacent to and associated with a layer 11 of a lightsensitive diazo compound in an amount sufficient to act as a barrier against diffusion of dye in areas of exposure.
  • the dye or dyes employed may be any of the soluble dyes well known in the art.
  • the exposed areas of the diazo compound undergo a modification quantitatively reducing the liquid permeability of the exposed areas in proportion to the amount of exposure per unit area thereof and, consequently, serve as a barrier against transfer of dye from layer 10.
  • a suitable dye solvent may then be applied, preferably by rupturing a frangible container 12 and dispersing the solvent contained therein.
  • Container 12 may be ruptured, for example, by passage through a pair of rollers according to procedures disclosed in the United States Patent No. 2,634,886 issued to Edwin H. Land.
  • the dye solvent which is capable of permeating only the unexposed areas as a result of the reduced permeability of exposed areas, acts as a carrier for the transfer, .by imbibition, of dye from layer 10 to a print-receiving layer or stratum '13 held in such close proximity to layer 11 that a substantially imagewise distribution of dye, in terms of the unexposed areas of the light-sensitive diazo layer, is transferred to the print-receiving layer 13.
  • the light-sensitive diazo layer 1 1 and the print-receiving layer 13 may be separated, as by being stripped apart.
  • a suitable support layer '15 may be associated with the light-sensitive layer and/or the print-receiving layer to provide increased structural. strength and stability.
  • Another embodiment of the invention comprises a unitary layer system, as illustrated in FIG. 2, in which the dye or dyes are incorporated in a layer 14 of a light-sensitive diazo compound.
  • the permeability of the light-sensitive layer is quantitatively reduced inthe exposed areas, so that a substantially imagewise distribution of dye in terms of the unexposed areas of the light-sensitive layer 14 is transferred, by imbibition, to a print-receiving stratum 13 held in close proximity to layer 14.
  • the embodiment illustrated in FIG. 2 is identical with that illustrated in FIG. 1 with but one exception. This exception is that, in the embodiment illustrated in FIG. 1, the photosensitive element contains the light-sensitive diazo compound and the color image-forming constituents in separate layers 10 and '11, whereas in the embodiment illustrated in FIG. 2, they are both in a single layer 14.
  • FIG. 3 A still further embodiment of the invention is illustrated in FIG. 3, wherein a dye is incorporated in a layer 16 carried by a suitable support 15.
  • Dye layer 16 is held in close proximity to an exposed layer of a light-sensitive diazo compound, frangible container 12 is ruptured to release a suitable dye solvent which is absorbed into dye layer 16 and into the unexposed areas of layer 11, thereby transferring a substantially imagewise distribution of the dye from dye layer 16, by imbibition, to the unexposed areas of light-sensitive layer 11, imparting thereto a positive image in terms of the unexposed areas of light-sensitive layer 11.
  • a negative image may also be obtained in the negative dye layer 16 in terms of the exposed areas of light-sensitive layer 11. It will be appreciated that the desired transfer will be appreciably improved if the unexposed portions of the light-sensitive diazo compound exhibit a selective affinity or mordant action toward the dye.
  • the dye or dyes may be incorporated in a dye solvent in frangible container 18 and a layer 11 of light-sensitive diazo compounds is coated onto an image-receiving sheet 13. Subsequent to exposure, frangible container 18 is ruptured and the solution of dye diffuses, by imbibition, through the unexposed areas of layer 11 to yield on and/or in print-receiving stratum 13 and in layer 11 an imagewise distribution of dye in terms of the unexposed areas of the light-sensitive diazo compound.
  • Application of the dye solvent may be facilitated by the use of an impermeable spreading sheet 17.
  • a suitable stripping layer may be provided between the light-sensitive layer 11 and the image-receiving layer 13, thereby facilitating separation of the two layers after formation of the dye image in or on image-receiving layer 13.
  • the light-sensitive layer maybe self-supporting or mounted on a thin, permeable support.
  • the image-receiving layer may be applied to the back of the light-sensitive layer to receive the dye transferring therethrough.
  • a color image may be obtained by diffusion transfer processes such as illustrated in FIGS. 1-4 by utilizing a light-sensitive diazo compound in combination with any of the soluble dyes well known in the art.
  • a positive transfer image was obtained by diffusion of color image-forming components only in unexposed areas of the light-sensitive element, the exposed areas acting as a barrier to preclude transfer of the imageforming components.
  • the exposed areas acting as a barrier to preclude transfer of the imageforming components.
  • a diazo sulfonate may be formed of a diazonium compound which is not a polymer or resin, e.g., a monomeric diazonium compound. As illustrated in Example 11, infra, exposure to light decomposes the dye diazo sulfonate and the released dye is transferred to form a negative image.
  • a multiplicity of prints may be formed by transferring a plurality of dye images to a plurality of successively superposed image-receiving layers. This is particularly effective in the embodiment illustrated in FIG. 4, wherein the exposed light-sensitive layer may be used in a manner similar to a stencil.
  • the number of multiple copies formed is necessarily dependent upon exhaustion of the soluble dye capacity, which in turn is dependent upon the quantum of soluble dye and/ or solvent utilized, which in turn may be varied over a substantial range to suit the requirements of the practitioner.
  • a suitable dye solvent or dye solution to the light-sensitive element may also be accomplished, for example, by immersing, coating, spraying, flowing, etc., the light-sensitive element be ing superposed on a sheet-like image-receiving element either prior to, during or subsequent to application.
  • the image-receiving element which comprises at least a dyeable material, may be selected from those which are well known and commonly used in photographic processes and may be either opaque or transparent, depending upon whether the practitioner desires a color reflection print or a color transparency.
  • the image-receiving element may comprise a single sheet of permeable material or it may comprise a support which carries a stratum or strata of permeable image-receiving materials.
  • the image-receiving element may contain agents adapted to mordant or otherwise fix the transferred color imageforming constituents in order to build up a greater density of image dye.
  • the use of a mordant in an image-receiving element is disclosed in Patent No. 2,559,643.
  • the light-sensitive diazo compounds may be appropriately sensitized by the addition of suitable additives.
  • Additive agents of a character suitable for effectuating an increase in the relative speed of the light-sensitive layers reaction and/or an amplification of the effect of the incidence of actinic radiation and/ or an increase in the spectral range available to effect the excitation of the light-sensitive material are well known in the art.
  • the sensitivity of a given light-sensitive diazo compound may be extended to a greater portion, if not to all, of the visible spectrum by the incorporation in the light-sensitive layer of suitable sensitizers.
  • the sensitivity of a given light-sensitive diazo compound may be appropriately restricted to specific wavelengths of the spectrum by coating on or otherwise applying appropriate filter agents.
  • the liquid processing composition used in carrying out this invention comprises at least a liquid of sufficient solvent activity to act as a dye carrier for the diffusion of the particular dye or dyes employed.
  • the solvent may be water or an organic solvent or a mixture of both. Suitable organic solvents, such as hydrocarbons, chlorinated hydrocarbons, alcohols, ketones and the like are well known in the art.
  • the liquid processing composition may also contain suitable acidic or alkaline materials necessary to increase solvent activity where found expedient or desirable to incorporate such additives. In other words, where a given dye is more soluble in an acid environment, for example, it is contemplated that a suitable acid, such as a strong mineral acid, be added to the solvent. It will be apparent that the solvent, pH, etc., are also selected so as to have minimum effect on the exposed areas of the light-sensitive layer.
  • the rate of color-image formation is in part determined by the rate that the dye-carrier permeates the unexposed areas of the differentially hardened light-sensitive layer, and the rate of image formation may therefore be controlled in part by the selection of a solvent which exhibits the desired rate of permeation.
  • a viscosity-increasing compound constituting a filmforming material of the type which, when spread over a water-absorbent base, will form a relatively firm, dimensionally stable film is preferably included in the liquid processing composition in order to assist in carrying out the uniform spreading of the composition between layers of the film unit.
  • a suitable film-forming material is a high molecular weight polymer as, for example, a polymeric, water-soluble ether, such as hydroxyethyl cellulose or sodium carboxymethyl cellulose. Filmforming compositions of this nature are described in Patent No. 2,559,643.
  • an auxiliary hardening agent or agents, which do not adversely affect the dye or dyes, may be added to the processing composition to effect an increase in the hardness and therefore a decrease in the permeability of the exposed light-sensitive material.
  • Hardening agents of this nature are well known in the art.
  • dyes capable of being solubilized and diffused through a permeable light-sensitive material
  • these dyes are available for the practice of this invention.
  • monoazo, diazo and anthraquinone dyes are available for the practice of this invention.
  • the field of dye materials may be further extended by the employment of dye substances of the type which are colorless or of a color other than that ultimately desired in a particular environment, for example, in an acid environment, but upon change in the environment, such as a change in pH, take on a color change.
  • Dye substances of this type include indicator dyes, leuco dyes and carbinols of basic dyes.
  • the diffusion-transfer processes of this invention may also be utilized to control the transfer of color-forming components which will effect a color change in a predyed image-receiving layer, for example, to control the transfer of a reducing agent in a color system wherein an oxidized monomeric or polymeric indolphenol dye is disposed in or on a suitable image-receiving element.
  • a selective reduction of the oxidized indolphenol dye or dyes may be effected to provide loss of color in or on the image-receiving element in terms of the unexposed areas of a selectively exposed light-sensitive differentially permeable element.
  • EXAMPLE 1 A subcoated cellulose acetate sheet was coated with a layer of 4% gelatin solution containing 3% Acid Blue 18 and the coating was allowed to dry. Thereafter, a second coating of an 0.8% aqueous solution of Fairmount Diazo Resin No. 4 was applied on top of the first coating. The coated sheet was then exposed for 1 minute. After exposure, it was imbibed for 3 minutes with an aqueous solution containing 3% hydroxyethyl cellulose, whereby a negative transfer image was obtained.
  • EXAMPLE 2 The experiment illustrated in Example 1 was repeated, using exposures of 5, and minutes. In each case, a negative transfer image was obtained.
  • EXAMPLE 4 A 4% gelatin solution containing 4% Acid Blue 18 was coated onto a subcoated cellulose acetate sheet and then dried. Thereafter, a second coating of a 10% aqueous solution of Fairmount Diazo Resin No. 4 was applied. The coated sheet was exposed for 3 minutes and then imbibed for 2 minutes with an aqueous solution containing 3% hydroxyethyl cellulose, thereby forming a positive transfer image.
  • EXAMPLE 5 The above experiment was repeated, except that the imbibition was with a processing solution comprising 1 part by weight of methanol to 3 parts of the aqueous solution containing 3% hydroxyethyl cellulose. A denser transfer image was obtained.
  • EXAMPLE 6 A subcoated cellulose acetate sheet was coated with a 4% gelatin solution containing 4% Acid Blue 34. After drying, a second coating of a 7% aqueous solution of Fairmount Diazo Resin No. 4 was applied. Exposure and imbibition was substantially the same as in Example 4 and a positive transfer image was likewise obtained.
  • EXAMPLE 7 Two unitary layer light-sensitive elements were prepared by coating 21 subcoated cellulose acetate sheet with a 0.5% gelatin solution containing 4% Acid Blue 34 and 5% Fairmount Diazo Resin No. 4. One light-sensitive element prepared in this manner was exposed for 5 minutes, and the second one was exposed for 20 minutes. Both were imbibed for 1 minute with an aqueous solution containing 3% hydroxyethyl cellulose. In both instances, a positive transfer image was obtained.
  • EXAMPLE 8 In the above examples, the di-azo resin showed sensitivity substantially only to blue light. In this example, the procedure set forth in Example 7 was repeated, adding trace amounts of a mixture of thiourea and Basic Green 1 to the dye and diazo resin coating solution. A positive transfer image was obtained showing sensitivity to be extended into the red.
  • EXAMPLE 9 A light-sensitive element was prepared by coating baryta paper with an aqueous solution containing diazotized Direct Blue 1. It was then exposed for 2 minutes and imbibed for 3 minutes with a processing solution comprising 1 part by weight of tetrahydrofuran to 3 parts of an aqueous solution of 4% carboxymethyl cellulose. A negative transfer image was obtained.
  • EXAMPLE 10 Following imbibition as illustrated in Example 9, the light-sensitive element was uniformly re-exposed for 2 minutes and then subjected to a second imbibition period. A positive transfer image was formed.
  • EXAMPLE 11 A layer of 4% gelatin containing 4% Acid Blue 34 was coated onto a subcoated cellulose sheet. After drying, a second coating of a 0.5% gelatin solution containing 7% Fast Blue BB Salt was applied. The coated negative sheet was exposed for minutes and then imbibed for 1 minute with an aqueous solution containing 3 hydroxyethyl cellulose, to obtain a positive transfer image.
  • the process of forming positive color images which comprises exposing a light-sensitive element comprising a light-sensitive diazo compound and a soluble sulfonate salt of a dye, said diazo compound in said light-sensitive element being present in an amount suflicient to form a barrier for said dye in exposed areas, thereby precluding diffusion of said dye through said exposed areas of said diazo compound; contacting said exposed light-sensitive element with a processing composition comprising at least a solvent for said dye, said solvent being present in an amount sufficient to form an imagewise solution of said dye in terms or" unexposed and partially exposed areas of said diazo compound; and diffusing said imagewise dye solution, at least in part, through unexposed and partially exposed areas of said diazo compound to a superposed image-receiving element to form thereon a positive image comprising essentially said dye.
  • said light-sensitive diazo compound is a methylene-linked polymer of p-diazodiphenylamine.
  • the process of forming negative color images which comprises exposing a light-sensitive element containing the reaction product of a light-sensitive diazo compound and a soluble sulfonate salt of a dye to release said dye in areas of exposure, said released dye being more soluble than said reaction product, the concentration of said diazo compound in said light-sensitive element being relatively small so as not to preclude diffusion of said dye in exposed areas; contacting said exposed light-sensitive element with a processing composition comprising at least a solvent for said dye; and selectively transferring, by imbibition, an imagewise distribution of said dye in terms of exposed and partially exposed areas of said light-sensitive element to a superposed image-receiving element, thereby forming a negative transfer dye image.
  • said light-sensitive diazo compound is a methylene-linked polymer of p-diazodiphenylamine.
  • the process of forming images in color which comprises exposing a light-sensitive element comprising a light-sensitive diazo compound and at least one dye, thereby quantitatively reducing the liquid permeability of the exposed areas of said light-sensitive diazo compound in proportion to the amount of exposure per unit area thereof, whereby said exposed areas of reduced permeability serve as a barrier against diffusion of said dye from said light-sensitive element when said element is contacted at some.
  • the process of forming color images which comprises exposing a light-sensitive element comprising a light-sensitive diazo compound, thereby quantitatively reducing the liquid permeability of the exposed areas of said light-sensitive diazo compound in proportion to the amount of exposure per unit area thereof, whereby said exposed areas of reduced permeability serve as a barrier against diffusion therethrough of a solution containing at least one dye; and thereafter contacting said exposed element with said dye-containing solution, said dye being present initially exterior to said light-sensitive element, whereby said dye-containing solution dififuses through said unexposed and permeable areas of said diazo compound to form a positive dye image therebeneath.
  • the process of forming images in color which comprises exposing a light-sensitive element comprising diazotized Direct Blue 1; contacting said exposed light-sensitive element with a processing composition comprising at least a solvent for said compound; and selectively transferring, by imbibition, an imagewise distribution of said compound in terms of exposed and partially exposed areas to a superposed image-receiving element, thereby forming a negative color image.
  • a process as defined in claim 10 including the steps of re-exposing said light-sensitive element at some time subsequent to said contacting step; re-contacting said reexposed light-sensitive element with a second processing composition comprising at least a solvent for the said compound remaining in said re-exposed light-sensitive element; and transferring, by imbibition, at least a portion of the remaining said compound in said light-sensitive element to a second superposed image-receiving element, thereby forming a positive color image on said second image-receiving element.
  • a photographic product comprising a support, a light-sensitive diazo compound in a layer on said support, and a dye in a layer on the same side of said support as said diazo compound, said dye being selected from the group consisting of Acid Blue 34, Acid Blue 18, and Acid Green 5.
  • NORMAN G. TORCHIN Primary Examiner.
  • PHILIP E. MANGAN Examiner.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photosensitive Polymer And Photoresist Processing (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
US94522A 1961-03-09 1961-03-09 Photographic processes and products Expired - Lifetime US3246984A (en)

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Application Number Priority Date Filing Date Title
BE614794D BE614794A (ja) 1961-03-09
US94522A US3246984A (en) 1961-03-09 1961-03-09 Photographic processes and products
FR890023A FR1320989A (fr) 1961-03-09 1962-03-05 Nouveaux procédés et produits photographiques
GB8803/62A GB1003925A (en) 1961-03-09 1962-03-07 Photographic colour diffusion transfer process
DEJ21411A DE1207215B (de) 1961-03-09 1962-03-09 Verfahren zur Herstellung von UEbertragungs-farbbildern

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3495926A (en) * 1966-11-02 1970-02-17 John F Naz Method and apparatus for staining microslides

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3275437A (en) * 1963-01-24 1966-09-27 Du Pont Image transfer process and elements therefor

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1408315A (en) * 1916-03-21 1922-02-28 John Owden O Brien Photographic-printing process
GB417588A (en) * 1932-01-04 1934-10-04 Bela Gaspar Method of producing colour-photographic printing-out images
US2100063A (en) * 1931-12-09 1937-11-23 Kaile & Co Ag Process for the production of tanned pictures
US2627459A (en) * 1947-01-15 1953-02-03 Polaroid Corp Photographic film unit having a frangible fluid container therein
US2653527A (en) * 1947-02-19 1953-09-29 Polaroid Corp Process for treating photosensitive materials by spreading thereon a layer of processing liquid and apparatus for performing said process
US2714066A (en) * 1950-12-06 1955-07-26 Minnesota Mining & Mfg Planographic printing plate
US2826501A (en) * 1956-12-20 1958-03-11 Litho Chemical And Supply Co I Lithographic coating solution and lithographic plates coated therewith
GB804971A (en) * 1954-03-09 1958-11-26 Polaroid Corp Improvements in or relating to photography
US3001873A (en) * 1956-03-22 1961-09-26 Ncr Co Photo-printing process and material
US3010391A (en) * 1954-06-29 1961-11-28 Grinten Chem L V D Light-sensitive sheets and process for producing transfer images
US3030207A (en) * 1952-07-17 1962-04-17 Polaroid Corp Photographic processes

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE421243C (de) * 1924-04-05 1926-02-15 Jos Pe Farbenphoto Ges M B H Verfahren zur Herstellung von Naturfarbendrucken nach Mehrfarbenaufnahmen
DE467817C (de) * 1926-04-30 1928-11-01 Technicolor Motion Picture Verfahren zur Erzeugung von Blankfilmen mit gehaerteter Gelatineschicht fuer die UEbertragung von farbigen Bildern nach dem Aufsaugeverfahren
DE494088C (de) * 1928-12-12 1930-03-18 Amira Akt Ges Verfahren zur Vorbehandlung der Gelatineschicht zwecks schnelleren und leichteren Diffundierens der Anilinfarben aus Gelatine-Auswaschreliefs
DE656293C (de) * 1934-12-15 1938-02-02 Friedrich Lierg Dr Ing Blankpapier fuer den Absaugedruck

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1408315A (en) * 1916-03-21 1922-02-28 John Owden O Brien Photographic-printing process
US2100063A (en) * 1931-12-09 1937-11-23 Kaile & Co Ag Process for the production of tanned pictures
GB417588A (en) * 1932-01-04 1934-10-04 Bela Gaspar Method of producing colour-photographic printing-out images
US2627459A (en) * 1947-01-15 1953-02-03 Polaroid Corp Photographic film unit having a frangible fluid container therein
US2653527A (en) * 1947-02-19 1953-09-29 Polaroid Corp Process for treating photosensitive materials by spreading thereon a layer of processing liquid and apparatus for performing said process
US2714066A (en) * 1950-12-06 1955-07-26 Minnesota Mining & Mfg Planographic printing plate
US3030207A (en) * 1952-07-17 1962-04-17 Polaroid Corp Photographic processes
GB804971A (en) * 1954-03-09 1958-11-26 Polaroid Corp Improvements in or relating to photography
US3010391A (en) * 1954-06-29 1961-11-28 Grinten Chem L V D Light-sensitive sheets and process for producing transfer images
US3001873A (en) * 1956-03-22 1961-09-26 Ncr Co Photo-printing process and material
US2826501A (en) * 1956-12-20 1958-03-11 Litho Chemical And Supply Co I Lithographic coating solution and lithographic plates coated therewith

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3495926A (en) * 1966-11-02 1970-02-17 John F Naz Method and apparatus for staining microslides

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BE614794A (ja)
GB1003925A (en) 1965-09-08

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