US1404737A - Sensitive cellulosic film and process for producing the same - Google Patents
Sensitive cellulosic film and process for producing the same Download PDFInfo
- Publication number
- US1404737A US1404737A US450400A US45040021A US1404737A US 1404737 A US1404737 A US 1404737A US 450400 A US450400 A US 450400A US 45040021 A US45040021 A US 45040021A US 1404737 A US1404737 A US 1404737A
- Authority
- US
- United States
- Prior art keywords
- film
- sensitive
- silver
- same
- producing
- 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
- 238000000034 method Methods 0.000 title description 8
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 229910052736 halogen Inorganic materials 0.000 description 7
- 229910052709 silver Inorganic materials 0.000 description 7
- 239000004332 silver Substances 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- -1 silver halogen salt Chemical class 0.000 description 6
- JKFYKCYQEWQPTM-UHFFFAOYSA-N 2-azaniumyl-2-(4-fluorophenyl)acetate Chemical compound OC(=O)C(N)C1=CC=C(F)C=C1 JKFYKCYQEWQPTM-UHFFFAOYSA-N 0.000 description 5
- 229910021612 Silver iodide Inorganic materials 0.000 description 5
- ADZWSOLPGZMUMY-UHFFFAOYSA-M silver bromide Chemical compound [Ag]Br ADZWSOLPGZMUMY-UHFFFAOYSA-M 0.000 description 5
- 229940045105 silver iodide Drugs 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000001376 precipitating effect Effects 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 2
- IOLCXVTUBQKXJR-UHFFFAOYSA-M potassium bromide Chemical compound [K+].[Br-] IOLCXVTUBQKXJR-UHFFFAOYSA-M 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 1
- 229920000298 Cellophane Polymers 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 229910001961 silver nitrate Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
- G03C1/494—Silver salt compositions other than silver halide emulsions; Photothermographic systems ; Thermographic systems using noble metal compounds
- G03C1/496—Binder-free compositions, e.g. evaporated
-
- 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
- G03C1/494—Silver salt compositions other than silver halide emulsions; Photothermographic systems ; Thermographic systems using noble metal compounds
Definitions
- This invention relates to photogra'iplhic films which are permeable to water and to a process for the preparation of the same.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Description
ED STATES JAQUES EDWIN BRANDENBERGER, 0F PARIS, FRANCE, ASSIGNOR TO LA SOGIETE LA CELLOPHANE, OF PARIS, FRANCE.
SENSITIVE CELLULOSIC FILM AND PROCESS FOR PRODUCING THE SAME.
No Drawing.
To all 1.0/1 am it may concern Be it known that I, JA UEs EDWIN BRANDENBERGER, citizen of the Republic of Switzerland, and resident of Paris, France, post-office address 16 Rue du Louvre, have invented a new and useful Sensitive Cellulosic Film and Process for Producing the Same, which improvements are fully set forth in the following specification.
This invention relates to photogra'iplhic films which are permeable to water and to a process for the preparation of the same.
Up to the present when photographic films which are permeable to water such as cellulose'(viscose) films were being prepared a sensitive salt, for example silver bromide had to be formed by successively treating the film in tw baths, for example one containing silver nitrate and the other potassium bromide, the silver bromide sensitive to light being formed in the interior of the mass. The silver bromide could not be made to penetrate the interior of the film by means f a silver bromide bath, because this substance is not soluble in water and it is well known that water is necessary in the preparation of photographic films from materials which are permeable to water.
The operation may be simplified by using a single bath in the following manner:
Silver iodide for example,which is a sensitive salt of the same category as the bromideis insoluble in water but soluble in an aqueous solution of potassium iodide.
According to the present invention an aqueous solution of potassium iodide is prepared in which silver iodide is dissolved until the solution is saturated.
Thereupon the film is immersed in the bath. As soon as it is sufiiciently impregnated it is withdrawn and squeezed and then soaked in water. The resulting dilution of the potassium iodide solution sets free a large quantity of silver iodide which is deposited in the interior of the film and renders the latter sensitive.
The same result can be obtained by using Specification of Letters Patent.
Application filed March 7, 1921.
Patented Jan. si, 1922.
Serial No. 450,400.
for example a warm solution of silver bromide in an alkaline bromide.
What I claim and desire to secure by Letters Patent is:-
l. The process for the production of sensitive cellulosic films for photographic purposes, which consists in impregnating the film with a solution of a silver halogen salt in a suitable solvent, and thereupon precipitating the said silver halogen salt within the said film by the action of a suitable liquid.
2. The process for the production of sensitive cellulosic films for photographic purposes, which consists in impregnating the film with. a solution of a silver halogen salt in a suitable solvent, and thereupon precipitating the said silver halogen salt within the said film by the action of water.
3. The process for the production of sensitive cellulosic films for photographic purposes, which consists in impregnating the film with a solution of a silver halogen salt in an alkali-halogen salt by heating it desired. squeezingthe impregnated film and thereupon precipitating the said silver halogen salt within the said film by the action of water.
4. The process for the production of sensitive cellulosic films for photographic purposes, which consists in impregnating the film with a solution f silver iodide in potassium iodide, squeezing the impregnated film and thereupon precipitating the said silver iodide within the said film by the action of water.
5. A sensitive cellulosic film for photographic purposes, essentially characterized by the fact that the entire film is impregnated with a sensitive salt of silver.
In testimony whereof I have signed this specification in the presence of two subscribing witnesses.
JAQUES EDWIN BRANDENBERGER.
Witnesses:
GEORGES PASCAL CARRIERE, GERMAINE MIoHIELs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US450400A US1404737A (en) | 1921-03-07 | 1921-03-07 | Sensitive cellulosic film and process for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US450400A US1404737A (en) | 1921-03-07 | 1921-03-07 | Sensitive cellulosic film and process for producing the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1404737A true US1404737A (en) | 1922-01-31 |
Family
ID=23787923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US450400A Expired - Lifetime US1404737A (en) | 1921-03-07 | 1921-03-07 | Sensitive cellulosic film and process for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1404737A (en) |
-
1921
- 1921-03-07 US US450400A patent/US1404737A/en not_active Expired - Lifetime
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