US2423473A - Process for forming iodine images - Google Patents

Process for forming iodine images Download PDF

Info

Publication number
US2423473A
US2423473A US547096A US54709644A US2423473A US 2423473 A US2423473 A US 2423473A US 547096 A US547096 A US 547096A US 54709644 A US54709644 A US 54709644A US 2423473 A US2423473 A US 2423473A
Authority
US
United States
Prior art keywords
image
iodine
silver
carrier
dichroic
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
US547096A
Other languages
English (en)
Inventor
Barnes Arthur
Helen P Husek
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.)
Polaroid Corp
Original Assignee
Polaroid 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
Priority to BE465872D priority Critical patent/BE465872A/xx
Priority claimed from US517982A external-priority patent/US2409923A/en
Application filed by Polaroid Corp filed Critical Polaroid Corp
Priority to US547096A priority patent/US2423473A/en
Priority to GB24447/44A priority patent/GB604280A/en
Priority to FR926308D priority patent/FR926308A/fr
Application granted granted Critical
Publication of US2423473A publication Critical patent/US2423473A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • G03C9/00—Stereo-photographic or similar processes
    • G03C9/04—Vectographic-image

Definitions

  • Another object of the invention is to provide a novel method of so transforming an image pro prised by exposing and developing a photosensitive emulsionas to produce a corresponding image in a dichroic material.
  • a novelphotosensitive emulsion comprising a silver halide, in a molecularly oriented plastic carrier, which carrier when stained with iodine is adapted to render said stain dichroic; the use of an oriented sheet of polyvinyl alcohol surfaced with a conventional silver halide emulsion, as for example, of gelatin, in carrying out the novel transformation of the invention to obtain a corresponding dichroic image; and the provision of a novel method of obtaining an iodine image in an unoriented material and of transferring said image to a molecularly orientedplastic carrier, as by a surface-to-surface contact, for the purpose of producing a corresponding dichroic image in said carrier.
  • the silver halide emulsion may comprise a suspension of the photosensitive material ina mixture of gelatin and polyvinyl alco- It .isalsoto be understood that other transof the invention, asfor example, a positive print in silver may have the silver image converted to an iodineimagain accordance with the processes of .theinvention, and the latter may then disposedprintedbya suitable transfer process on a sheetof oriented plastic to produce in said sheet a dichroicdmage whichwill correspond to the silverimage.
  • the molecularly oriented carrier in which the dichroicimage is formed is a sheet of transparent, high molecular weight .polymer adapted to form a dichroic sorption complex with iodine, said polymer preferably containing hydroxyl groups, and examples. of suitable polymers dichroism and hence are more suitable in the production of dichroic images.
  • the plastic carrier is preferably one which maintains its orientation and is stable throughout the steps comprising the novel process of the invention and which is capable of supporting a dispersion of the photosensitive material from which the silver image is formed.
  • Polyvinyl alcohol is a preferred material for the plastic carrier for the further reasons that it is stable in, and is permeable by, the solutions which convert and transform the silver halide to a silver image and the silver image to the ultimate dichroic stain of iodine.
  • Polyvinyl alcohol is also relatively insoluble in said solutions so that a sharp dichroic image is obtained, despite the several transformations which constitute the novel process of the invention.
  • Cellulose acetate is a preferred material for the support and to form the most satisfactory material for the dichroic image there is bonded to at least one face of a sheet of said acetate, a sheet of molecularly oriented polyvinyl alcohol having a hydroxyl content, preferably in excess of 50%, said polyvinyl alcoho1 sheet being uniformly oriented throughout its entire thickness.
  • the left eye image and the other the right eye image of a stereoscopic pair may be the left eye image and the other the right eye image of a stereoscopic pair and the directions of the molecular orientations of the plastic layers carrying said images may be at substantially right angles to one another so that an observer of the iodine images formed from said silver images, provided with a pair of suitably oriented analyzers, may have onl the left eye image rendered visible to his left eye and only the right eye image to his right eye, whereby the object is seen stereoscopically.
  • a silver halide emulsion in polyvinyl alcohol is exposed and developed by conventional photographic methods to produce an image in silver in the polyvinyl alcohol, and the silver image is thereafter transformed to an image formed of an oxidizing agent, the latter being adapted to release iodine from an iodide.
  • the polyvinyl alcohol suspension of the oxidizing agent is then reacted in an iodide and a material adapted to dissolve said agent, thereby releasing iodine from the iodide.
  • the iodine is physically located at the same points on the exposed surface as the original exposed silver halide particles and forms the desired dichroic image in the polyvinyl alcohol.
  • the above process can be readily adapted for transforming the silver image of a conventional photographic paper print to an iodine image, which iodine image can then be transferred to a sheet comprising at least a surface layer of molecularly oriented polyvinyl alcohol.
  • the iodine is not released until the paper print is brought into intimate contact with the polyvinyl alcohol surface.
  • This modification of the process comprises transforming the silver image in the paper print to a manganese dioxide, as described above, and then immersing the print in a solution of an iodide which does not contain an acid. This brings the iodide into intimate contact with the dioxide image, but because of the absence of the acid does not release iodine.
  • the acid for rendering the dioxide capable of effecting the release of the free iodine from the iodide solution is contained in the oriented polyvinyl alcohol surface with which the print is then brought into surface contact.
  • the iodine is thus simultaneously released and transferred to the polyvinyl alcohol surface.
  • the acid as for example maleic acid, may be introduced into the polyvinyl alcohol surface in any well known manner, as by casting the polyvinyl alcohol layer or sheet with the acid contained in the casting solution.
  • Example 1 A layer or sheet of molecularly oriented polyvinyl alcohol containing, or supporting, a silver halide emulsion and mounted on a suitable supporting sheet, is exposed, developed, and stopped, in accordance with conventional photographic methods. It is preferably Washed in water and is then immersed in a bath consisting of:
  • image in iodine refers to an image formed of iodine or its complexes.
  • the method of producing an iodine image which comprises transforming an image in silver in a permeable, relatively water-insoluble carrier to an image comprising manganese dioxide by reacting said silver image with a permanganate, and reacting said last-named image with an iodide in the presence of an acid whereby iodine is released and replaces the dioxide to form an image in iodine.
  • Th method of producing a dichroic image which comprises transforming an image in silver in a carrier having at least the layer which supports said silver formed of a molecularly oriented polyvinyl alcohol to an image comprising manganese dioxide by reacting said silver image with a permanganate, and reacting said last-named image with an iodide in the presence of an-acid whereby iodine is released and replaces the dioxide to form an image in iodine.
  • the method of producing an iodine image which comprises transforming an image in silver in a permeable, relatively water-insoluble carrier to an image comprising relatively waterinsoluble manganese dioxide, and efiecting a simultaneous oxidation-reduction reaction between said managanese dioxide and an iodide in an acid medium whereby the iodide is oxidized to iodine which replaces said manganese dioxide to form an image in iodine in said carrier.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Printing Methods (AREA)
  • Polarising Elements (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
US547096A 1944-01-12 1944-07-28 Process for forming iodine images Expired - Lifetime US2423473A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BE465872D BE465872A (enrdf_load_stackoverflow) 1944-01-12
US547096A US2423473A (en) 1944-01-12 1944-07-28 Process for forming iodine images
GB24447/44A GB604280A (en) 1944-01-12 1944-12-06 Improvements in or relating to iodine images and methods of producing same
FR926308D FR926308A (fr) 1944-01-12 1946-05-04 Perfectionnements aux images d'iode et aux méthodes de préparation de celles-ci

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US517982A US2409923A (en) 1944-01-12 1944-01-12 Process of forming iodine images
US547096A US2423473A (en) 1944-01-12 1944-07-28 Process for forming iodine images

Publications (1)

Publication Number Publication Date
US2423473A true US2423473A (en) 1947-07-08

Family

ID=27059294

Family Applications (1)

Application Number Title Priority Date Filing Date
US547096A Expired - Lifetime US2423473A (en) 1944-01-12 1944-07-28 Process for forming iodine images

Country Status (4)

Country Link
US (1) US2423473A (enrdf_load_stackoverflow)
BE (1) BE465872A (enrdf_load_stackoverflow)
FR (1) FR926308A (enrdf_load_stackoverflow)
GB (1) GB604280A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10215901B2 (en) * 2015-11-04 2019-02-26 Nitto Denko Corporation Polarizer, polarizing plate, and method of producing polarizer

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US628012A (en) * 1898-11-01 1899-07-04 Thomas Manly Photographic printing.
US1214940A (en) * 1915-02-26 1917-02-06 Brewster Film Corp Coloring or dyeing photographic images.
US1389742A (en) * 1919-05-02 1921-09-06 Eastman Kodak Co Colored image and process of producing the same
US1574356A (en) * 1922-03-08 1926-02-23 Wadsworth Watch Case Co Light-sensitive medium and process of producing the same
US2204604A (en) * 1939-05-27 1940-06-18 Polaroid Corp Method of forming designs in polarizing material
US2289715A (en) * 1940-06-07 1942-07-14 Polaroid Corp Composite film for receiving stereoscopic prints
US2315373A (en) * 1941-05-28 1943-03-30 Polarold Corp Process for forming light-polarizing images

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US628012A (en) * 1898-11-01 1899-07-04 Thomas Manly Photographic printing.
US1214940A (en) * 1915-02-26 1917-02-06 Brewster Film Corp Coloring or dyeing photographic images.
US1389742A (en) * 1919-05-02 1921-09-06 Eastman Kodak Co Colored image and process of producing the same
US1574356A (en) * 1922-03-08 1926-02-23 Wadsworth Watch Case Co Light-sensitive medium and process of producing the same
US2204604A (en) * 1939-05-27 1940-06-18 Polaroid Corp Method of forming designs in polarizing material
US2289715A (en) * 1940-06-07 1942-07-14 Polaroid Corp Composite film for receiving stereoscopic prints
US2315373A (en) * 1941-05-28 1943-03-30 Polarold Corp Process for forming light-polarizing images

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10215901B2 (en) * 2015-11-04 2019-02-26 Nitto Denko Corporation Polarizer, polarizing plate, and method of producing polarizer
US10578786B2 (en) 2015-11-04 2020-03-03 Nitto Denko Corporation Polarizer, polarizing plate, and method of producing polarizer

Also Published As

Publication number Publication date
GB604280A (en) 1948-07-01
BE465872A (enrdf_load_stackoverflow)
FR926308A (fr) 1947-09-29

Similar Documents

Publication Publication Date Title
US2315373A (en) Process for forming light-polarizing images
US2409959A (en) Method of forming images of dichroic materials
US2409923A (en) Process of forming iodine images
US2423473A (en) Process for forming iodine images
US3035915A (en) Process for rendering polyester film receptive to photographic materials and resulting elements
US2892383A (en) Light-polarizing process and product
US2413630A (en) Process for producing iodine images
US2458168A (en) Production of light-polarizing images
US2397149A (en) Plastic sheet and method of manufacture
US2613149A (en) Diazotype photoprinting material
US1658510A (en) Photogrpahic medium and process
US2388894A (en) Method of developing photographic emulsions
US2110491A (en) Photographic emulsions
US2440106A (en) Light-polarizing image and methods for forming the same
US3235381A (en) Three-dimensional photograph and light sensitive element for preparing same
US4113494A (en) Structure for producing imaged structures
US3816133A (en) Process for the production of photographic images by modifying vesicular images
US1951933A (en) Translucent material
US2444567A (en) Color photographic process
US3547635A (en) Vacuum deposited light-sensitive titanium dioxide
US2663640A (en) Photographically light-sensitive silver halide-diazide colloid layers
US3142567A (en) Photographic product and process
US2317750A (en) System of improving photographic layers
US2305169A (en) Process of producing sensitive silver halide-colloidal aggregates
US2931296A (en) Processing of molecularly oriented sheets of transparent, linear, high molecular weight, hydroxyl-containing polymers to improve the dyeing qualities thereof