US2596756A - Photomechanical copy method - Google Patents

Photomechanical copy method Download PDF

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Publication number
US2596756A
US2596756A US783914A US78391447A US2596756A US 2596756 A US2596756 A US 2596756A US 783914 A US783914 A US 783914A US 78391447 A US78391447 A US 78391447A US 2596756 A US2596756 A US 2596756A
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United States
Prior art keywords
layer
emulsion
unhardened
sheet
colloid
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 - Lifetime
Application number
US783914A
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English (en)
Inventor
Henry C Yutzy
Edward C Yackel
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.)
Eastman Kodak Co
Original Assignee
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
Priority to BE485609D priority Critical patent/BE485609A/xx
Application filed by Eastman Kodak Co filed Critical Eastman Kodak Co
Priority to US783914A priority patent/US2596756A/en
Priority to US783912A priority patent/US2592368A/en
Priority to GB10544/48A priority patent/GB655273A/en
Priority to GB10545/48A priority patent/GB655274A/en
Priority to BE485611D priority patent/BE485611A/xx
Priority to FR980401D priority patent/FR980401A/fr
Priority to FR980399D priority patent/FR980399A/fr
Priority to DEE2141A priority patent/DE874704C/de
Priority to US267446A priority patent/US2675313A/en
Priority to US267482A priority patent/US2763553A/en
Application granted granted Critical
Publication of US2596756A publication Critical patent/US2596756A/en
Priority to DEE6633A priority patent/DE927307C/de
Priority to GB1826/53A priority patent/GB725667A/en
Priority to FR1092963D priority patent/FR1092963A/fr
Priority to FR1089934D priority patent/FR1089934A/fr
Priority to GB1827/53A priority patent/GB726543A/en
Priority to BE517066D priority patent/BE517066A/xx
Priority to BE517064D priority patent/BE517064A/xx
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
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/004—Photosensitive materials
    • G03F7/06—Silver salts
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B15/00—Special procedures for taking photographs; Apparatus 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
    • G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
    • G03C5/29—Development processes or agents therefor
    • G03C5/315—Tanning development
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S101/00—Printing
    • Y10S101/29—Printing involving a color-forming phenomenon

Definitions

  • Thisziiriventionr relates to-photographyand more particularly to.
  • a photomechanical copy method fonnse: in :the. reproductionof: printed :n'ia-tter;
  • a silversaltemulsion'layer such-as gelatin:- silver halide,- containing pigments or. other: materials if so desired, (is exposed to a suitable .sube jec-tgjsuch. as line or half-tonetsubjects.-(twotone subjects)- excludingcontinuous tonewsubjects, .developed in the: presence'of .a tanning type of .developerfollowing which theelement is. squeegeed-into contact witha secondsupport whereby after drawing joff the -developed element a stratum "of the image of the original-subject will have been transferred to the second -.supp0rt.'
  • One objectof our invention isto provideasiznpie photographic process of :1eproducinga-subj act such as -printed-matter by transfer of strata of substantially. unhardened emulsion to :a support.
  • Another: object :is-to provide the materials and photographict-and-mechanical-processes and' variations of the same-toxwhich our. invention is'sus- -ceptible.-
  • Other objects will-become apparent from 'the following descriptionof, our invention.
  • Fig. 1 shows. in cross-sectional view the .ap pearance? of a-silver halide emulsion-bearing support-afterexposure :to'a subject and'developmentrin: thefipresence of :a tanning developer.
  • Fig.:2 showswin; enlargedacrossesectionzzl. yiew the appearance :of the-transferred :unhardened emulsion. image-stratum imprinting relation to the element-of 1..
  • Fig. 13.1- shows-fin enlarged.nrossesectional.view@ a modification of .Qouit invention" after; .the transferred imagesstratunrrofz Fig; :2 ;has::been';further treated to'increase'its opticalzdensity. 1'
  • 19525111 agents have a solubility of from about .01 to .2"
  • Developing agents falling within the above classification are, for example, 3,4-dihydroxy diphenyl, 2,5-dihydroxy diphenyl, 5,6,7,8-tetrahydronaphthohydroquinone, and 2,3-dihydroxy diphenyl.
  • the mentioned diphenyl compounds are preferred because they possess the combination of the common properties, high rate of development, high tanning efiiciency, and solubility in the preferred range.
  • the tanning developing agents are mentioned as incorporated in the emulsion, the desired compounds are, for example, those mentioned and having the mentioned characteristics.
  • tanning developing agents as hydroquinone and pyrocatechol, in absence of sulfite, are used, they are less desirable but useful results may be obtained.
  • Compounds like 2-hydroxy- 5-amino diphenyl or 3,4-diamino diphenyl are not especially useful because of their poor stability or failure to tan. It is, therefore, apparent that after exposure to a subject the difierential hardening of the exposed emulsion can take place in the presence of a tanning developing agent and that this includes whether or not the agent is in the emulsion before exposure.
  • the colloid binder for the emulsion layer is preferably gelatin although other materials such as polyvinyl alcohol, hydrolyzed cellulose esters, and resins which have the property of being hardened withtanning developers locally in the region of the exposed image may be used.
  • enlarged cross-sectional view layer I0 is a film, paper or other support to which is affixed the exposed and tanning developed silver halide emulsion layer H containing the silver and tanned gelatin image [2.
  • a coupler-developer solution may be used in the manner conventional to present day color photography methods to transform image l4 into a dye image.
  • the components of coupler-development may be incorporated together with or instead of pigment into the emulsion layer, or only the coupler may be in the emulsion layer, and darkening of the image is effected by use of a developing agent, the oxidation product of which combines with the coupler.
  • a developing agent the oxidation product of which combines with the coupler.
  • the color developer is added to the emulsion layer it should be of such character that it does not compete with the tanning developer, e. g., the developing rate should be less. It is also apparent that the color developer or coupler used or both should be relatively nondiffusing in the alkaline bath used for development, in order that they remain in the colloid layer to participate in the transfer process.
  • the various materials used as above for increasing the optical density of image i4, previous to the transfer operation may have been coated onto the receiving surface i3.
  • image 14 contacts a sulfided or thiourea-treated surface the silver halide reacts therewith.
  • Alkali required to promote development of a developercontaining emulsion may be coated on support [3 prior to the transfer.
  • the exposed element contacts the surface in the presence of moisture tanning development occurs and the tanned emulsion may be stripped from support l3 leaving untanned image.
  • development may be commenced by treating the exposed element with ammonia solution or fuming the element with ammonia.
  • Stripping of the tanned images from the paper may be facilitated by a surface coating on the paper, for example, citric acid, and tendency toward staining of the prints on ageing can be minimized by pretreating the receiving paper with sulfite, bisulfite or ascorbic acid.
  • the colloid of the transferred image may be hardened by treatment with alum, chromium salts, etc., if desired.
  • images H5 can be difierent-subject-imagesas 1 would be'present on a rollioi exposed film wh'ich is to be processed gin a continuous 'processing apparatus.
  • a TA'nemulsion' suitable for use in"ourprocessican' .be' made by preparing solutions "of (P0125 grams 'ofgelatin in 1' liter ofwater at40C.,"(B) 100 ;grarns silver nitrate in 500' ccwater"at"'20 C. and
  • Ythe emulsion is to contain a developing'agentit added, for example, as iollowsf'25 grams of 3,4-dihydroXy diphenyl are dissolved,in"250"cc.'iof
  • Hhyde' maybe added andthis composition is-c'oated' :onasupport as papercontaining.notagenttending -;to. further. harden the, emulsion After; drying,
  • one diazo' component is""in"-*thei emulsion layer
  • the other may "becarried by the sheet receiving the'transferred untanned 'image and by .virtue of .alkalipresent, couplingwill "takepla'ce to form a dye image which wilbrerhain in-the transferred area.
  • Example 2 The-methodof using an emulsion madeas above and contai ing a developing agent is ,as
  • the emulsion layer we .use' in “our process-can Q be. of the well-known. variety of sensitive silver salt compositions, such "as silver halidedispe'rs'ed in a colloid vehicle such as gelatin or aresinias I polyvinyl alcohol or polyacrylamide, capable'of beingv differentially tanned as above” mentioned.
  • I'hephGfi ial hic emulsion is expose '60' emulsion. is dependent in part upohthefresult desired but can be of the order'of BSQ'grams of - ⁇ by.-contactor projection, face to face. with the -subject.
  • Q'The exposed sheet isfplaced in a- 3% NazCO3 bath for about '15 seconds. during which Eti-mealnegatiVe image is developed in. tanned .gelatin. The excess alkaline solution is removed A1 sheet'of bond paper isr'o'lled into' contact with the photographic copy andimmediately removed.
  • the treating solution can contain, for example in addition to alkali, the following compounds in the amounts indicated based on weight of an alkaline developing solution:
  • Our process is adaptable to making prints by mean-s of stencils.
  • We merely coat the emulsion layer on a porous support as cloth, silk or highly porous paper and, after exposure and tannin development, transfer the unhardened image away from the support in one or more transfers as strata until the support becomes pervious to a printing ink in the unhardened area.
  • Prints are then made from the resulting stencil in the usual manner using a low viscosity ink with the result that a large number of positive prints can be made.
  • pigment as used herein and in terials of nature such that they impart optical density to the copy.
  • a method of photographic reproduction which comprises forming by exposure to a twotone subject and development in a light-sensitive substantially unhardened organic colloidsilver halide emulsion layer, a hardened colloid image and leaving substantially unhardened colloid in the remaining area of said layer, said unhardened layer being not harder than a gelatin layer containing 0.7 gram of formaldehyde per pound of gelatin freshly coated, removing excess Water from the surface of said emulsion layer, pressing a sheet having an absorbent surface against said emulsion layer while said 'emulsion is moist and its surface free of greasy material, to cause only said unhardened colloid portion of said layer to adhere to said sheet, and separating said sheet and said emulsion layer to transfer only a stratum of the unhardened colloid portion of said layer to said sheet.
  • a method of photographic reproduction which comprises forming by exposure to a twotone subject and development in a light-sensitive substantially unhardened organic colloidsilver halide emulsion layer, in the presence of a tanning developing agent, a hardened colloid image and leaving substantially unhardened colloid in the remaining area of said layer, said unhardened layer being not harder than a gelatin layer containing 0.7 gram of formaldehyde per pound of gelatin freshly coated, removing excess water from the surface of said smulsion layer, pressing a sheet having an absorbent surface against said emulsion layer While said emulsion is moist and its surface free of greasy material, to cause only said unhardened colloid portion of said layer to adhere to said sheet, and separating said sheet and said emulsion layer to transfer only a stratum of the unhardened colloid portion of said layer to said sheet.
  • a method of photographic reproduction which comprises forming by exposure to a twotone subject and development in a light-sensitive substantially unhardened organic colloidsilver halide emulsion layer containing a tanning developing agent, a hardened colloid'image and leaving substantially unhardened colloid in the remaining area of said layer, said unhardened layer being not harder than a gelatin layer containing 0.7 gram of formaldehyde per pound of gelatin freshly coated, removing excess water from the surface of said emulsion layer, pressing a sheet having an absorbent surface against said emulsion layer while said emulsion is moist and its surface free of greasy material, to cause only said unhardened colloid portion of said layer to adhere to said sheet, and separating said sheet and said emulsion layer to transfer only a stratum of the unhardened colloid portion of said layer to said sheet.
  • a method of photographic reproduction which comprises forming by exposure to a twotone subject and development in a light-sensitive substantially unhardened organic colloidsilver halide emulsion layer containing a tanning developing agent of the class consisting of 3.4-
  • a method of photographic reproduction which comprises forming by exposure .to a two- -tone subject and development in alight-sensitive substantially unhardened organic colloidsilver halide emulsion layer containing a tanning developing agent havinga solubility ina phosphate-citrio acid buffer of pH 5.0, of from .005 to 1.0 gram per 100 cc. of said buffer, a hardened colloid image and leaving substantially unhardened colloid in the remaining area of said layer, said unhardened layer being not harder than a gelatin layer containing 0.7 gram of formaldehyde. per pound of gelatin freshly coated, re-
  • a method of photographic reproduction which comp-rises forming by exposure to a two,- tone subject and development in a light-sensi tive substantially unhardened organic.
  • colloidsilver halide emulsion layer containing a tanning developing agent having a solubility in a phosphate-citric acid buffer solution of pH 5.0, of from .005 to 1.0 gram per 100 cc. of said buffer and said emulsion containing finely divided pigment particles, a hardened colloid image and leaving substantially unhardened colloid in the remaining area of.
  • said unhardened layer being not harder than a gelatin layer containing 0.7 gram of formaldehyde per pound of gelatin freshly coated, removing excess water from the surface of said emulsion layer, pressing a sheet-having an absorbent surface againstsaid emulsion layer while said emulsion is moist and its surface free of greasy material, to cause only said unhardened colloid portion of said layer to adhere, to said sheet, and separating saidsheet and said emulsion layerto transfer only a stratum of the unhardened colloid portion of said layer to said sheet.
  • a method of photographic reproduction which comp-rises forming by exposure to a twotone subject and development in a light-sensitive substantially unhardened organic colloidsilver halide emulsion layer containing a' tanning developing agent having' a solubility in.
  • a phosphate-citric acid buffer solution of pH 5.0 of from .005 to 1.0 gram per 100 cc. of said buffer and said emulsion containing finely divided pigment particles, a hardened colloid image and leaving substantially unhardened colloid in the remaining area of said layer, said unhardened layer being not harder than a gelatin layer containing 0.7 gram of formaldehyde per pound of gelatin.
  • a nethod of photographic reproduction which comprisesforming byexposure to a twotone jsubject and development in alight-sensitive substantially unhardened gelatino-silver halide emulsionlayerin the presence of a tanning developing agent, a" hardened colloid image and leaving substantially unhardened colloid in the remaining area of said layer, said unhardened layer being not harder than a, gelatin layer containing 0.7 gram of formaldehyde per, pound of g'elatin freshly coated, removing excess water from'the surface of said emulsioniayer, pressing a sheet having an absorbent surface against said emulsion; layer while said emulsion is moist and its surfacefree of greasy material, to cause only said unhardened colloid portion of said layer to adhere to said'sheet, and separating said sheet and said emulsion layer to transfer only a stratum of the unhardened colloid portion of said layer'to said sheet.
  • a method of photographic reproduction which com'prisesforming by exposure to a twotone subject and development in Y a light-sensitive substantially unhardened gelatinoesilver halide emulsionlayer containing a tanning. developing agent having a solubility' in a phosphate-citric acid buffer ofpH 5.0,:offil0m ;005 to.1.0 gramper cc.
  • said buffer a hardened colloid image and'leaving substantially unhardened'colloid' in the remaining area of said layer, said unhardened layer being not harder thana gelatin layer containing 0.7 gram of formaldehyde per pound of gelatin freshly coated, removing excess water from the surface of said emulsion layer, pressing a sheet having an absorbent surface against said emulsion layer while said emulsion is moist and its surface free of greasy material, to cause only said unhardened colloid which comprises forming by exposure to a twotone subject and development in a light-sensitive substantially unhardened gelatino-silver halide emulsion layer containing a tanning developing agent having a solubility in a phosphate-citric acid bufier of pH 5.0, of from .005 to 1.0 gram per 100 cc.
  • said unhardened layer being not harder than a gelatin layer containing 0.7 gram of formaldehyde per pound of gelatin freshly coated, removing excess water from the surface of said emulsion layer, pressing a sheet having an absorbent surface against said emulsion layer while said emulsion is moist and its surface free of greasy material, to cause only said unhardened colloid portion of said layer to adhere to said sheet, and separating said sheet and said emulsion layer to transfer only a stratum of the unhardened colloid portion of said layer to said sheet, and moistening the residue of said emulsion layer and transferring another stratum of said unhardened colloid portion to an absorbent sheet.
  • a method of photographic reproduction which comprises forming by exposure to a twotone subject and development in a light-sensitive substantially unhardened organic colloidsilver halide emulsion layer coated on a porous support, in the presence of a tanning developing agent, a hardened colloid image and leaving substantially unhardened colloid inthe remaining area of said layer, said unhardened layer being not harder than a gelatin layer containing 0.7 gram of formaldehyde per pound of gelatin freshly coated, removing excess water from the surface of said emulsion layer, pressing a sheet having an absorbent surface against said emulsion layer while said emulsion is moist and its surface free of greasy material, to cause only said unhardened colloid portion of said layer to adhere to said sheet, and separating said sheet and said emulsion layer to transfer only a stratum of the unhardened colloid portion of said layer to said sheet.
  • a method of photographic reproduction which comprises forming by exposure to a twotone subject and development in a light-sensitive substantially unhardened organic colloidsilver halide emulsion layer coated on a porous support, in the presence of a tanning developing agent, a hardened colloid image and leaving substantially unhardened colloid in the remaining area of said layer, said unhardened layer being not harder than a gelatin layer containing 0.7 gram of formaldehyde per pound of gelatin freshly coated, removing excess water from the surface of said emulsion layer, pressing a sheet having an absorbent surface against said emulsion layer while said emulsion is moist and its surface free of greasy material, and stripping off a stencil having porous areas corresponding to the unhardened colloid portions of said emulsion layer.
  • a method of photographic reproduction which comprises developing a hardened gelatin image in a substantially unhardened gelatinosilver halide emulsion layer containing a tanning developing agent, and leaving substantially unhardened gelatin in the remaining area of said layer, said unhardened layer being not harder than a gelatin layer containing 0.7 gram of formaldehyde per pound of gelatin freshly coated, removing excess water from the surface of said emulsion layer, pressing a sheet having an absorbent surface against said emulsion layer, while said emulsion is moist and its surface free of greasy material, to cause only said unhardened gelatin to adhere to said sheet, separating said sheet and emulsion .layer to transfer only a stratum of the unhardened gelatin of said layer to said sheet, and thereafter exposing and heating the transferred stratum'in the presence of moisture to increase its optical density.
  • a method of photographic reproduction which comprises exposing to a two-tone subject a substantially unhardened gelatino-silver halide emulsion layer containing a gelatin tanning silver halide devolping agent, said emulsion layer being not harder than a gelatin layer containing 0.7 gram of formaldehyde per pound of gelatin freshly coated, developing the exposed emulsion layer with an alkaline solution to obtain a hardened gelatin and silver, image in the region of exposure and substantially unhardened gelatin and silver halide in the unexposed region of the emulsion layer, pressing a sheet having an absorbent surface against said emulsion layer while said emulsion layer is moist to cause only said unexposed regions to adhere to said sheet and separating said sheet and emulsion layer to transfer only a stratum of the unexposed region to the sheet, said exposed emulsion layer having been treated subsequent to exposure and prior to transfer of said stratum, to increase the optical density of the unexposed portions of the emulsion layer

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Photosensitive Polymer And Photoresist Processing (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Paper (AREA)
  • Laminated Bodies (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
US783914A 1947-11-04 1947-11-04 Photomechanical copy method Expired - Lifetime US2596756A (en)

Priority Applications (18)

Application Number Priority Date Filing Date Title
BE485609D BE485609A (ru) 1947-11-04 1942-10-30
US783914A US2596756A (en) 1947-11-04 1947-11-04 Photomechanical copy method
US783912A US2592368A (en) 1947-11-04 1947-11-04 Gelatine silver halide emulsion layer containing a dihydroxy diphenyl tanning developing agent
GB10544/48A GB655273A (en) 1947-11-04 1948-04-15 Improved photographic materials
GB10545/48A GB655274A (en) 1947-11-04 1948-04-15 Improvements in processes of photographic reproduction
BE485611D BE485611A (ru) 1947-11-04 1948-10-30
FR980399D FR980399A (fr) 1947-11-04 1948-11-03 Nouveaux produits photosensibles et procédé pour la préparation de reliefs sur ces produits
FR980401D FR980401A (fr) 1947-11-04 1948-11-03 Procédé perfectionné de transfert d'images photographiques et produits en résultant
DEE2141A DE874704C (de) 1947-11-04 1950-09-17 Lichtempfindliche Schicht fuer Zeichenleinwand
US267446A US2675313A (en) 1947-11-04 1952-01-21 Photographic reproduction process
US267482A US2763553A (en) 1947-11-04 1952-01-21 Lithographic offset printing process
DEE6633A DE927307C (de) 1947-11-04 1953-01-20 Verfahren zur photographischen Reproduktion von Druckschriften od. dgl.
BE517066D BE517066A (ru) 1947-11-04 1953-01-21
FR1092963D FR1092963A (fr) 1947-11-04 1953-01-21 Procédé de préparation de planches d'impression photolithographiques et nouveaux produits pour la mise en oeuvre de ce procédé
GB1826/53A GB725667A (en) 1947-11-04 1953-01-21 Improvements in processes of photographic reproduction
FR1089934D FR1089934A (fr) 1947-11-04 1953-01-21 Procédé de reproduction photographique et nouveaux produits obtenus
GB1827/53A GB726543A (en) 1947-11-04 1953-01-21 Improvements in processes of photographic reproduction
BE517064D BE517064A (ru) 1947-11-04 1953-02-21

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US783914A US2596756A (en) 1947-11-04 1947-11-04 Photomechanical copy method
US267482A US2763553A (en) 1947-11-04 1952-01-21 Lithographic offset printing process
US267446A US2675313A (en) 1947-11-04 1952-01-21 Photographic reproduction process

Publications (1)

Publication Number Publication Date
US2596756A true US2596756A (en) 1952-05-13

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Family Applications (4)

Application Number Title Priority Date Filing Date
US783914A Expired - Lifetime US2596756A (en) 1947-11-04 1947-11-04 Photomechanical copy method
US783912A Expired - Lifetime US2592368A (en) 1947-11-04 1947-11-04 Gelatine silver halide emulsion layer containing a dihydroxy diphenyl tanning developing agent
US267446A Expired - Lifetime US2675313A (en) 1947-11-04 1952-01-21 Photographic reproduction process
US267482A Expired - Lifetime US2763553A (en) 1947-11-04 1952-01-21 Lithographic offset printing process

Family Applications After (3)

Application Number Title Priority Date Filing Date
US783912A Expired - Lifetime US2592368A (en) 1947-11-04 1947-11-04 Gelatine silver halide emulsion layer containing a dihydroxy diphenyl tanning developing agent
US267446A Expired - Lifetime US2675313A (en) 1947-11-04 1952-01-21 Photographic reproduction process
US267482A Expired - Lifetime US2763553A (en) 1947-11-04 1952-01-21 Lithographic offset printing process

Country Status (5)

Country Link
US (4) US2596756A (ru)
BE (4) BE485609A (ru)
DE (2) DE874704C (ru)
FR (4) FR980401A (ru)
GB (4) GB655274A (ru)

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2675313A (en) * 1947-11-04 1954-04-13 Eastman Kodak Co Photographic reproduction process
US2704712A (en) * 1952-09-18 1955-03-22 Eastman Kodak Co Photographic copying process
US2710820A (en) * 1952-09-18 1955-06-14 Eastman Kodak Co Formation of laminates using contact resins
US2716059A (en) * 1952-01-21 1955-08-23 Eastman Kodak Co Photographic transfer process
US2739890A (en) * 1952-01-21 1956-03-27 Eastman Kodak Co Photographic reproduction process
US2747999A (en) * 1953-03-16 1956-05-29 Eastman Kodak Co Photographic reproduction process
US2756143A (en) * 1953-12-24 1956-07-24 Eastman Kodak Co Photographic reproduction process
US2795504A (en) * 1952-10-25 1957-06-11 Dick Co Ab Compositions for use in the manufacture of elements in reproduction
US2798427A (en) * 1952-05-13 1957-07-09 Dick Co Ab Duplicating process
DE1015313B (de) * 1956-02-18 1957-09-05 Agfa Ag Verfahren zur direkten Herstellung von Positiven mit Hilfe der gerbenden Entwicklung
US2835575A (en) * 1955-04-05 1958-05-20 Eastman Kodak Co Photographic reproduction process
US2856283A (en) * 1956-05-07 1958-10-14 Eastman Kodak Co Photographic emulsion
US2865745A (en) * 1955-08-25 1958-12-23 Eastman Kodak Co Photographic reproduction process
US2873671A (en) * 1955-05-11 1959-02-17 Dick Co Ab Copy process and materials for use in same
US2903964A (en) * 1955-01-24 1959-09-15 Eastman Kodak Co Photographic spirit duplicating process
US2914404A (en) * 1953-07-31 1959-11-24 Blaupunkt Werke Gmbh Method of producing two-dimensional circuits or circuit elements on supporting bases
US2969015A (en) * 1953-07-14 1961-01-24 Dick Co Ab Method of producing a spirit master from a positive and a duplicating process with same
US3010390A (en) * 1954-06-29 1961-11-28 Buskes Willem Marie Planographic printing plates
US3010389A (en) * 1953-03-09 1961-11-28 Buskes Willem Marie Photographic transfer printing plates
US3010391A (en) * 1954-06-29 1961-11-28 Grinten Chem L V D Light-sensitive sheets and process for producing transfer images
US3060022A (en) * 1959-07-13 1962-10-23 Gen Aniline & Film Corp Image transfer process
US3079858A (en) * 1956-02-25 1963-03-05 Agfa Ag Process for the production of printing forms
US3180731A (en) * 1962-03-14 1965-04-27 Eastman Kodak Co Photothermographic elements and method of using same
US3189448A (en) * 1962-08-22 1965-06-15 Eastman Kodak Co Developing compositions used in photographic transfer processes
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US3189449A (en) * 1962-10-01 1965-06-15 Eastman Kodak Co Colloid stratum transfer process
US3240600A (en) * 1963-01-16 1966-03-15 Eastman Kodak Co Colloid transfer process
US3326687A (en) * 1964-11-10 1967-06-20 Eastman Kodak Co Photographic colloid transfer system
US3751161A (en) * 1965-10-01 1973-08-07 Itek Corp Photographic image transfer apparatus
US4233392A (en) * 1978-07-25 1980-11-11 E. I. Du Pont De Nemours And Company Light-sensitive material for tanning development comprising pretreated carbon
US5304454A (en) * 1991-05-07 1994-04-19 Fuji Photo Film Co., Ltd. Image forming method using silver halide, reducing agent and polymerizable compound

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BE517064A (ru) 1954-11-26
US2675313A (en) 1954-04-13
FR1092963A (fr) 1955-04-28
BE485609A (ru) 1942-11-12
US2763553A (en) 1956-09-18
BE517066A (ru) 1954-11-26
DE927307C (de) 1955-05-23
GB726543A (en) 1955-03-23
FR1089934A (fr) 1955-03-24
BE485611A (ru) 1948-11-13
FR980399A (fr) 1951-05-11
DE874704C (de) 1953-04-27
GB725667A (en) 1955-03-09
US2592368A (en) 1952-04-08
GB655274A (en) 1951-07-18
FR980401A (fr) 1951-05-11
GB655273A (en) 1951-07-18

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