US2262986A - Photographic backing paper - Google Patents
Photographic backing paper Download PDFInfo
- 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
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
- 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)
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) |
-
0
- FR FR956691D patent/FR956691A/fr not_active Expired
-
1940
- 1940-11-02 US US364061A patent/US2262986A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FR956691A (de) | 1950-02-02 |
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