US2262986A - Photographic backing paper - Google Patents

Photographic backing paper Download PDF

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Publication number
US2262986A
US2262986A US364061A US36406140A US2262986A US 2262986 A US2262986 A US 2262986A US 364061 A US364061 A US 364061A US 36406140 A US36406140 A US 36406140A US 2262986 A US2262986 A US 2262986A
Authority
US
United States
Prior art keywords
backing paper
photographic
ink
film
sodium
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
US364061A
Other languages
English (en)
Inventor
Ernest L Baxter
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 FR956691D priority Critical patent/FR956691A/fr
Application filed by Eastman Kodak Co filed Critical Eastman Kodak Co
Priority to US364061A priority patent/US2262986A/en
Application granted granted Critical
Publication of US2262986A publication Critical patent/US2262986A/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
    • G03C3/00—Packages of films for inserting into cameras, e.g. roll-films, film-packs; Wrapping materials for light-sensitive plates, films or papers, e.g. materials characterised by the use of special dyes, printing inks, adhesives
    • G03C3/02—Photographic roll-films with paper strips
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/02—Printing inks
    • C09D11/04—Printing inks based on proteins

Definitions

  • This invention relatesto photographic backing paper, and more particularly to the ink with which photographic backing paper is marked.
  • the accompanying drawing shows a section of two convolutions of film with an interposed layer of backing paper, as it occurs in a roll film cartridge.
  • I represents the film base, carrying the emulsion 2, 2.
  • 3 represents the backing paper, carrying indicia 4.
  • the inks which have been most used for mark-- ing photographic backing paper usually consist of a dye, a binder and a solvent, and are such as to have no effect on unexposed photographic emulsions with which they are in contact.
  • the markings on the backing paper may reproduce themselves as an intensification of the latent image on the film. When the film is developed, the markings thus appear in the pictures.
  • Photographic backing paper bearing indicia printed with an ink comprising a dye and approximately l%, calculated on the total solids in the ink, of a reducing agent selected from the group consisting of sodium sulfite, ferrous sulfate, sodium formaldehyde sulfoxylate and sodium hydrosulfite.
  • a reducing agent selected from the group consisting of sodium sulfite, ferrous sulfate, sodium formaldehyde sulfoxylate and sodium hydrosulfite.
  • Photographic backing paper bearing indicia printed with an ink comprising a dye and approximately 1%, calculated on the total solids in the ink, of sodium sulfite.
  • a roll film cartridge comprising inter-rolled strips of film carrying a photographic emulsion and of backing paper, that surface of the backing paper which is in contact with the photographic emulsion carrying indicia printed with an ink comprising a dye and approximately 1%. calculated on the total solids in the ink, of a reducing agent selected from the group consisting of sodium sulfite, ferrous sulfate, sodium formalde hyde sulfoxylate and sodium hydrosulfite.
  • a roll film cartridge comprising inter-rolled strips of film carrying a photographic emulsion and of backing paper, that surface of the backing lated on the total solids in the ink, of sodium ERNEST L. BAIXTER.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)
US364061A 1940-11-02 1940-11-02 Photographic backing paper Expired - Lifetime US2262986A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR956691D FR956691A (de) 1940-11-02
US364061A US2262986A (en) 1940-11-02 1940-11-02 Photographic backing paper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US364061A US2262986A (en) 1940-11-02 1940-11-02 Photographic backing paper

Publications (1)

Publication Number Publication Date
US2262986A true US2262986A (en) 1941-11-18

Family

ID=23432842

Family Applications (1)

Application Number Title Priority Date Filing Date
US364061A Expired - Lifetime US2262986A (en) 1940-11-02 1940-11-02 Photographic backing paper

Country Status (2)

Country Link
US (1) US2262986A (de)
FR (1) FR956691A (de)

Also Published As

Publication number Publication date
FR956691A (de) 1950-02-02

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