US2084420A - Manufacture of photographic pictures - Google Patents

Manufacture of photographic pictures Download PDF

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Publication number
US2084420A
US2084420A US736959A US73695934A US2084420A US 2084420 A US2084420 A US 2084420A US 736959 A US736959 A US 736959A US 73695934 A US73695934 A US 73695934A US 2084420 A US2084420 A US 2084420A
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US
United States
Prior art keywords
metal
light
compound
sulfide
solution
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
US736959A
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English (en)
Inventor
Weyde Edith
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.)
GAF Chemicals Corp
Original Assignee
Agfa Ansco Corp
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 Agfa Ansco Corp filed Critical Agfa Ansco Corp
Application granted granted Critical
Publication of US2084420A publication Critical patent/US2084420A/en
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
    • G03C1/00—Photosensitive materials
    • G03C1/705—Compositions containing chalcogenides, metals or alloys thereof, as photosensitive substances, e.g. photodope systems
    • 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
    • Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
    • Y10S430/137—Cobalt complex containing
    • 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
    • Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
    • Y10S430/167—X-ray

Definitions

  • the present invention relates to a process of producing metal sulfide pictures by means of a developing method, wherein the sensitivity of the rinting surface to light much exceeds that of the surfaces used in the known developing processes and corresponds with that of the silver halide developing papers.
  • metal-sulfide produced in traces by exposure to light acts as nuclei similarly to metallic silver in the ordinary ess all metals are suitable which yield darkmetal sulfides, such as, for instance, lead, copper, bismuth, silver, mercury, thallium, molybdenum, tungsten, uranium, cobalt and nickel.
  • darkmetal sulfides such as, for instance, lead, copper, bismuth, silver, mercury, thallium, molybdenum, tungsten, uranium, cobalt and nickel.
  • sulfur compounds in the sensitive layer and in the developer there may be used those. which yield metal sulfides comparatively easily, such as, for
  • thiolirea and derivatives thereof, thioamides or thioacids For developing there may be used alkaline baths which contain a substance capable of convertingthe metal compound into a sulfide; in certain cases, however, an acid I development is possible. It is often not necessary to start with the metal compound of a sulfur compound. In most cases it is preferable to use a mixture of the sulfur compound and a metal combined otherwise than with the said sulfur compound. In this case it is advantageous that only a small proportion of .the sulfur compound should be added to the sensitive layer itself (sufficient for the formation of metal sulfide nuclei), the main part being added 'to the developer.
  • the various metal complex salts for instance, of cobalt, nickel or copper with nitrates, oxalates, organic amines and phenolates which .are so changed by light that compounds containing the metal in ionizable combination are produced.
  • Many metal complexes react only relatively slowly with sulfur compounds, but very quickly when even only very small proportions of the metal ion in question are present. The metal ions are presumably converted very quickly into metal sulfide and act asnuclei for the further formation of sulfide from the complex compound.
  • suitable developers are principally sulfideswhich in conse- .quence of formation of polysulfide or sulfo-salt Y are less'reactivethan pure sulfides.
  • developers theremay also be used mixtures of substances which react only relatively slowly with the formation of free sulfide-ion, such as, for example, a' solution of thioacetamide and caustic soda soluv
  • the light-sensitive substances which come un- ,der consideration are further characterized in that in a number of them the latent image, which can be developed, can be produced not only by the energy of the light rays, but, for instance,
  • Example z 2 grams of tcomnmmoamnm which has been purified by recrystallizing several times very carefully, are dissolved. in 100 .cc. of water and, at a maximum temperature of 40' 0., are mixed with '50 cc. of gelatine solution of 10 per cent strength.
  • "Hie latent image isdeveloped by a solution of the following composition:
  • Aprocess or photographic pic tures which comprises exposing to light an emulsion layer containing a compound of a heavy metal capable of forming a darkecolored sul- .;a,oe4,4so I A ,jflde until developable nuclei are formed, and treating the latentimage thus produced with a solution containing a thin-compound capable of forming the metal sulfide to form a visible imagefrom' the latent image immediately follow-' 2.
  • process or producing photographic pictures' which comprises exposing to light an emulsion layer containing a complex compound of a heavy metal, said complex compound being capable to form under the action of light a com-1 pound which contains the metaiin ionizable link age until developabie nuclei are formed, and
  • a process of producing photographic pictures- which comprises exposing to light an emulsion layer'containing a compound of a heavy metal selected from the group consisting of lead,
  • a process of producing photographic pictures which comprises exposing to light an emulsion layer containing a complex compound of a heavy metal selected from the group consisting of cobalt, nickel and copper with a compound selected from 'the group consisting of nitrates, oxalates, amines and phenolates'until developable nuclei are formed, and treatingthe latent image thus formed with a solution containing a thio-compound capable of forming the metal sulfide to form a visible image from the latent image immediately following 5.
  • a process of producing photographic pictures which comprises exposing to light an emulsion layer containing (Co(NH:)a(NO:) 4) NH; until deveiopable nuclei are formed and treating the latent image'thus obtained in an aqueous s'olution of ammonium-polysulfide to form a visible image from the latent image immediately following exposure.
  • a process of producing photographic pic-. tures which comprises exposing to light an emulsion layer containing a compound of a heavy metal capable of forming a dark-colored sulfide and a thic-compound capable of forming the.

Landscapes

  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
US736959A 1933-07-25 1934-07-25 Manufacture of photographic pictures Expired - Lifetime US2084420A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEI0047641 1933-07-25

Publications (1)

Publication Number Publication Date
US2084420A true US2084420A (en) 1937-06-22

Family

ID=7192050

Family Applications (1)

Application Number Title Priority Date Filing Date
US736959A Expired - Lifetime US2084420A (en) 1933-07-25 1934-07-25 Manufacture of photographic pictures

Country Status (4)

Country Link
US (1) US2084420A (enrdf_load_stackoverflow)
BE (1) BE404085A (enrdf_load_stackoverflow)
FR (1) FR775400A (enrdf_load_stackoverflow)
GB (1) GB439812A (enrdf_load_stackoverflow)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2981622A (en) * 1959-07-13 1961-04-25 Chalkley Lyman Photographic process
US3647439A (en) * 1968-10-01 1972-03-07 Eastman Kodak Co Photographic element, composition and process
US4045221A (en) * 1975-09-08 1977-08-30 Eastman Kodak Company Process of amplifying image in image recording layer by releasing reactant from image forming layer containing cobalt(III)complex
US4061497A (en) * 1975-07-14 1977-12-06 Eastman Kodak Company Catalytic activation of cobalt complex imaging by cobalt
US4171221A (en) * 1975-09-08 1979-10-16 Eastman Kodak Company High gain Co(III)complex imaging
US4188217A (en) * 1975-07-14 1980-02-12 Eastman Kodak Company Catalytic activation of cobalt complex imaging by cobalt sulfide
US4195998A (en) * 1974-04-15 1980-04-01 Eastman Kodak Company CO(III) Complex containing radiation sensitive element with diazo recording layer
US4201588A (en) * 1974-04-15 1980-05-06 Eastman Kodak Company Radiation sensitive co(III)complex photoreduction element with image recording layer
US4314019A (en) * 1976-09-07 1982-02-02 Eastman Kodak Company Transition metal photoreduction systems and processes

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2449153A (en) * 1944-04-03 1948-09-14 Urbach Franz Photographic silver bromide emulsion sensitized with cysteine
US2459136A (en) * 1944-09-07 1949-01-11 Gen Aniline & Film Corp Dry developing negative

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2981622A (en) * 1959-07-13 1961-04-25 Chalkley Lyman Photographic process
US3647439A (en) * 1968-10-01 1972-03-07 Eastman Kodak Co Photographic element, composition and process
US4195998A (en) * 1974-04-15 1980-04-01 Eastman Kodak Company CO(III) Complex containing radiation sensitive element with diazo recording layer
US4201588A (en) * 1974-04-15 1980-05-06 Eastman Kodak Company Radiation sensitive co(III)complex photoreduction element with image recording layer
US4061497A (en) * 1975-07-14 1977-12-06 Eastman Kodak Company Catalytic activation of cobalt complex imaging by cobalt
US4188217A (en) * 1975-07-14 1980-02-12 Eastman Kodak Company Catalytic activation of cobalt complex imaging by cobalt sulfide
US4045221A (en) * 1975-09-08 1977-08-30 Eastman Kodak Company Process of amplifying image in image recording layer by releasing reactant from image forming layer containing cobalt(III)complex
US4171221A (en) * 1975-09-08 1979-10-16 Eastman Kodak Company High gain Co(III)complex imaging
US4314019A (en) * 1976-09-07 1982-02-02 Eastman Kodak Company Transition metal photoreduction systems and processes

Also Published As

Publication number Publication date
BE404085A (enrdf_load_stackoverflow) 1934-08-31
FR775400A (fr) 1934-12-27
GB439812A (en) 1935-12-16

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